Answer: In simplest radical form, what are the solutions to the quadratic equation 0 = −3x² - 4x + 5? Quadratic formula x = - b ± √b² 2
a= - 24/19 3 X O
x = -- = -2±2/19 3
O x = 2+√19 3 2+2√19 3 4
ChatGPT
To find the solutions to the quadratic equation 0 = -3x² - 4x + 5, we can use the quadratic formula:
x = (-b ± √(b² - 4ac)) / (2a)
In this equation, a = -3, b = -4, and c = 5. Substituting these values into the quadratic formula, we get:
x = (-(-4) ± √((-4)² - 4(-3)(5))) / (2(-3))
Simplifying further:
x = (4 ± √(16 + 60)) / (-6)
x = (4 ± √76) / (-6)
x = (4 ± √(4 * 19)) / (-6)
x = (4 ± 2√19) / (-6)
Simplifying the expression:
x = (2(2 ± √19)) / (-6)
x = (2 ± √19) / (-3)
Therefore, the solutions to the quadratic equation are:
x = (2 + √19) / (-3)
x = (2 - √19) / (-3)
These solutions cannot be simplified any further in terms of radicals.
trouve trois nombres entiers consécutifs dont la somme vaut 513
Answer:
170, 171, 172
Step-by-step explanation:
x + x + 1 + x + 2 = 513
3x + 3 = 513
3x = 510
x = 170
x + 1 = 171
x + 2 = 172
These two triangles are similar.
Find the product of x and y.
A
21
C
18
X
B
D
y
x • y = [?]
12
10
E
Enter
Answer:
210
Step-by-step explanation:
You want the product of x and y given similar triangles with side ratios ...
x : 18 : 2110 : 12 : yProportionalCorresponding sides in similar triangles are proportional. This means ...
x/10 = 21/y
xy = 210 . . . . . . . cross multiply
The product of x and y is 210.
__
Additional comment
Sides in the larger triangle are 3/2 times those in the smaller triangle. This means x = 15, y = 14.
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Mario, Leticia y Beatriz se reparten un premio de Q80,000.00 de tal modo que Mario recibe Q20,000.00 más que Leticia y Beatriz el doble de Leticia. ¿Cuánto dinero reciben entre Mario y Leticia?
Answer:
Step-by-step explanation:
Mario recibe Q40,000.00, Leticia recibe Q20,000.00, and Beatriz receives Q20,000.00. Therefore, Mario and Leticia receive a total of Q60,000.00.
The graph of the absolute value parent function, f(x) = Ixl, is stretched
horizontally by a factor of 5 to create the graph of g(x). What function is g(x)?
A. g(x) = |1/5x|
B. g(x) = |x + 5|
C. g(x) = 5|x1
D. g(x) = |5x1
To solve the question, we need to consider the transformation described and determine the function that represents the stretched graph.
The absolute value parent function is [tex]\displaystyle\sf f(x) = |x|[/tex]. According to the question, this parent function is horizontally stretched by a factor of 5 to create the graph of [tex]\displaystyle\sf g(x)[/tex].
A horizontal stretch by a factor of 5 means that the x-values on the graph are multiplied by 5. In other words, the transformation can be represented as [tex]\displaystyle\sf g(x) = |5x|[/tex].
Therefore, the correct function that represents the graph of [tex]\displaystyle\sf g(x)[/tex], the stretched version of [tex]\displaystyle\sf f(x) = |x|[/tex], is [tex]\displaystyle\sf g(x) = |5x|[/tex].
The correct answer is option D: [tex]\displaystyle\sf g(x) = |5x|[/tex].
algebra is often introduced to primary school learners in a basic form. explain why algebra is taught to primary school learners and justify the importance of teaching it at an early age
Algebra is introduced to primary school learners in a basic form to provide them with a foundation for mathematical thinking and problem-solving.
Here are some reasons why algebra is taught to primary school learners and the importance of teaching it at an early age:
Logical Reasoning: Algebra helps develop logical thinking and problem-solving skills. By introducing basic algebraic concepts, such as using variables and solving simple equations, students learn to analyze patterns, make connections, and apply logical reasoning to solve problems.Abstract Thinking: Algebra introduces students to abstract thinking, which is an essential skill in various disciplines beyond mathematics. It allows them to work with symbols and unknown values, fostering creativity and flexibility in problem-solving.Real-World Applications: Algebra connects mathematical concepts to real-world situations. By using algebraic expressions and equations, students can model and solve problems related to everyday life, such as calculating distances, determining unknown quantities, or analyzing patterns in data.For such more questions on mathematical thinking
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Which rational expression is undefined when x = 0
(5x ^ 2 - 4)/(3x - 3)
(6x ^ 2)/(9x - 3)
(8x + 6)/(- x ^ 2 + 1)
(4x - 8)/(- 2x ^ 2)
The rational expression that is undefined when x = 0 is (8x + 6)/(-x^2 + 1).
To determine which rational expression is undefined when x = 0, we need to find the values of x that make the denominator equal to zero. When the denominator of a rational expression is zero, the expression is undefined because division by zero is not possible.
Let's analyze each of the given expressions:
(5x^2 - 4)/(3x - 3):
To check if this expression is undefined when x = 0, we substitute x = 0 into the denominator:
3(0) - 3 = -3
Since the denominator is not zero, this expression is defined when x = 0.
(6x^2)/(9x - 3):
Similarly, we substitute x = 0 into the denominator:
9(0) - 3 = -3
Again, the denominator is not zero, so this expression is defined when x = 0.
(8x + 6)/(-x^2 + 1):
For this expression, we substitute x = 0 into the denominator:
-(0)^2 + 1 = -0 + 1 = 1
The denominator is not zero, indicating that this expression is defined when x = 0.
(4x - 8)/(-2x^2):
When we substitute x = 0 into the denominator:
-2(0)^2 = -2(0) = 0
The denominator becomes zero when x = 0. Therefore, this expression is undefined when x = 0.
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Multiply the number by 4
Add 12 to the product
Divide the sum by 2
Subtract 6 from the quotient
By comparing the result obtained in Part B (6N) with the result obtained in Part A, we can see that the conjecture holds true. The result of the process is indeed related to the original number (N) by multiplying it by 6.
Part A:
Based on the given process, the conjecture that relates the result of the process to the original number (represented as N) is as follows:
Start with the original number N.
Multiply N by 4.
Add 12 to the product.
Divide the sum by 2.
Subtract 6 from the quotient.
The result of this process is the final number obtained.
Part B:
To prove the conjecture using deductive reasoning, we will follow the steps given in Part A:
Start with the original number N.
Multiply N by 12.
Add 4 to the product.
Divide the sum by 2.
Subtract 2 from the quotient.
We will simplify the steps using algebraic notation:
Step 1: N
Step 2: 12N
Step 3: 12N + 4
Step 4: (12N + 4) / 2
Step 5: [(12N + 4) / 2] - 2
Now, let's simplify Step 5:
Step 5: (12N + 4) / 2 - 2
= (12N + 4 - 2*2) / 2
= (12N + 4 - 4) / 2
= 12N / 2
= 6N
Therefore, the result of this process is 6N.
We may verify that the supposition is correct by comparing the result from Part B (6N) with the result from Part A. By multiplying the outcome by 6, the process does in fact relate to the original number (N).
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The complete question is:
Multiply the number by 4. Add 12 to the product. Divide this sum by 2. Subtract 6 from the quotient. 1st number is 3 and the results 2nd number is 6 and the results 3rd number is 8 and the results 4th number is 12 and the results part A. Write a conjecture that relates the result of the process to the original number selected. Represent the original number as N. What is the result part b Represent the original number as N, use deductive reasoning to prove the conjecture in part (a) multiply the number by 12 and the results add 4 to the product and the results divide the sum by 2 subtract 2 from the quotient
Christie makes changes to her budget at the end of every month. What is her reason for doing this in terms of smart financial planning?
A.
She keeps changing her mind about her goals.
B.
She is reviewing her goals and aligning the budget to work toward them.
C.
Her needs keep changing, so she changes her monthly budget.
D.
She realizes that her budget is tightly aligned to her goals.
The most appropriate reason for Christie making changes to her budget at the end of every month in terms of smart financial planning is B. She is reviewing her goals and aligning the budget to work toward them.Option B is correct.
Smart financial planning involves regularly evaluating and adjusting one's budget to ensure that it reflects their financial goals and current circumstances. By reviewing her goals, Christie can assess if her budget is still aligned with those goals and make any necessary changes to stay on track.
Life circumstances, such as changes in income, expenses, or financial priorities, may warrant adjustments to the budget. Christie recognizes that her needs may change over time, and by modifying her monthly budget, she can ensure that her financial resources are allocated appropriately to meet her evolving goals.
Regularly revisiting and modifying the budget allows Christie to adapt her financial plans, optimize her spending, and make informed decisions to achieve her financial objectives. Option B is correct.
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Joint probability of two statistical dependent events Y and Z can be written as P(Y and Z) =
Select one:
a. P(Y) * P(Z|Y) + P(Z)
b. P(Y) * P(Z|Y) - P(Z + Y)
c. P(Z + Y) * P(Y|Z)
d. P(Z - Y) * P(Y|Z)
e. P(Y) * P(Z|Y)
Note: Answer B is NOT the correct answer. Please find the correct answer. Any answer without justification will be rejected automatically.
The correct answer is option e. The joint probability of two statistical dependent events Y and Z can be written as P(Y and Z) = P(Y) * P(Z|Y).
The concept of joint probability is utilized in probability theory, a statistical tool that investigates the probability of two events happening simultaneously. It is an estimation of the probability of two or more events occurring simultaneously. Joint probability is a method of defining the probability of two events happening at the same time.The joint probability of two statistical dependent events Y and Z can be written as P(Y and Z) = P(Y) * P(Z|Y).This implies that the possibility of Z happening given Y has happened multiplied by the probability of Y happening is the joint probability of Y and Z. P(Z|Y) refers to the probability of Z occurring when Y is true or has already occurred. It is conditional probability and is often used to calculate joint probabilities.The formula for conditional probability is P(A|B) = P(A and B)/P(B), which can be simplified to P(A and B) = P(A|B) * P(B). This formula is applicable to P(Y and Z), where P(Y and Z) = P(Z|Y) * P(Y).
The correct answer is option e.
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Determine whether the function y= 156 (0.825)t represents exponential growth, exponential decay or neither. Explain
Read the passage from the ancient Egyptian Book of the Dead.
First, the body had to be preserved through the process of embalming. This is mummification. The soul also had to be supported with spells from the Book of the Dead. They believed that the afterlife was a mysterious place where the dead person traveled. The funeral marked the transition of the dead person from the world of the living to the land of the dead. The person would then travel to the Hall of Truth.
What is the central purpose of this passage?
to describe how spells were cast upon the soul
to describe the process for entering the afterlife
to explain why funerals were necessary to the afterlife
to explain that mummification involves embalming the body
Given the circle below with secants
�
�
�
‾
MNO
and
�
�
�
‾
QPO
. If
�
�
=
48
,
�
�
=
29
QO=48,QP=29 and
�
�
=
22
NO=22, find the length of
�
�
‾
MN
. Round to the nearest tenth if necessary.
The measure of line MN in the secant line using the Intersecting theorem is approximately 19.5.
What is the measure of length MN?Intersecting secants theorem states that " If two secant line segments are drawn to a circle from an exterior point, then the product of the measures of one of secant line segment and its external secant line segment is the same or equal to the product of the measures of the other secant line segment and its external line secant segment.
From the figure:
Sectant line segment QO = 48
internal line segement of QO = QP = 29
External line segement of QO = PO = 48 - 29 = 19
Second sectant line segment MO = NO + MN = ( 22 + x )
External line segement of MO = NO = 22
Using the Intersecting secants theorem:
22( 22 + x ) = 19 × 48
Solve for x:
484 + 22x = 912
22x = 912 - 484
22x = 428
x = 428/22
x = 19.5
Therefore, line MN is approximately 19.5.
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Which property allows you to write the expression
(3+7^}+(8-6^} as (8-6^}+(3+7^)?
Using the commutative property of addition, we can write the expression (3+7^) + (8-6^) as (8-6^) + (3+7^).
The property that allows you to write the expression (3+7^) + (8-6^) as (8-6^) + (3+7^) is the commutative property of addition.
The commutative property of addition states that changing the order of the addends does not affect the sum. In other words, when adding two numbers, you can rearrange the order of the numbers without changing the result.
Applying this property to the given expression, we can rearrange the order of the two addition operations:
(3+7^) + (8-6^) = (8-6^) + (3+7^)
So, using the commutative property of addition, we can write the expression (3+7^) + (8-6^) as (8-6^) + (3+7^).
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Use the following table to find the probability that a randomly chosen member of the Student Government Board is a graduate student or lives in on-campus housing. Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.
Students on the Student Government Board
On-Campus Housing Off-Campus Housing
Freshman 2 2
Sophomore 2 4
Junior 0 3
Senior 4 2
Graduate Student 2 0
The probability that a randomly chosen member of the Student Government Board is a graduate student or lives in on-campus housing is 8/25 or 0.32 (rounded to the nearest millionth).
1. Calculate the total number of students on the Student Government Board by summing up the numbers in the table:
Total Students = 2 + 2 + 2 + 4 + 0 + 3 + 4 + 2 = 19
2. Calculate the total number of graduate students on the Student Government Board:
Total Graduate Students = 2 + 0 = 2
3. Calculate the total number of students living in on-campus housing:
Total On-Campus Housing = 2 + 2 + 0 + 4 + 2 = 10
4. Calculate the probability of selecting a graduate student from the Student Government Board by dividing the total number of graduate students by the total number of students:
Probability of Graduate Student = Total Graduate Students / Total Students = 2 / 19
5. Calculate the probability of selecting a student living in on-campus housing by dividing the total number of students in on-campus housing by the total number of students:
Probability of On-Campus Housing = Total On-Campus Housing / Total Students = 10 / 19
6. Calculate the probability that a randomly chosen member of the Student Government Board is a graduate student or lives in on-campus housing by summing up the probabilities from steps 4 and 5:
Probability = Probability of Graduate Student + Probability of On-Campus Housing = 2 / 19 + 10 / 19
7. Simplify the fraction if necessary. In this case, the fraction cannot be simplified further, so the final probability is 2 / 19 + 10 / 19 = 12 / 19.
8. Convert the fraction to a decimal by dividing the numerator by the denominator: 12 / 19 ≈ 0.631578947, which rounds to 0.632 (rounded to the nearest thousandth).
9. Finally, express the probability as a fraction in lowest terms: 12 / 19 is already in lowest terms.
Therefore, the probability that a randomly chosen member of the Student Government Board is a graduate student or lives in on-campus housing is 12/19 or approximately 0.632 (rounded to the nearest thousandth).
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Please help!!! Fast
A spherical balloon has a radius of 165 mm. How much air was used to fill this balloon?
Step-by-step explanation:
To calculate the amount of air used to fill a spherical balloon, we need to determine its volume. The volume of a sphere can be calculated using the formula:
Volume = (4/3) × π × radius³
Given that the radius of the balloon is 165 mm, we can substitute this value into the formula:
Volume = (4/3) × π × (165 mm)³
Now, let's calculate the volume of the balloon:
Volume = (4/3) × 3.14159 × (165 mm)³
Volume ≈ 4.18879 × (165 mm)³
Evaluating this expression will give us the volume of the balloon in cubic millimeters. However, to express it in a more practical unit, such as liters, we need to convert the volume from cubic millimeters to liters.
1 liter = 1000 cubic centimeters (cc)
1 cubic centimeter (cc) = 1 milliliter (ml)
1 milliliter (ml) = 1 cubic millimeter (mm³)
To convert the volume from cubic millimeters to liters, we divide the volume by 1000:
Volume (liters) = Volume (cubic millimeters) / 1000
So, let's calculate the volume of the balloon in liters:
Volume (liters) = (4.18879 × (165 mm)³) / 1000
Using a calculator to evaluate this expression, we find:
Volume (liters) ≈ 7.976 liters
Therefore, approximately 7.976 liters of air were used to fill the spherical balloon.
HELPPP PLSSSS
Find the length of the missing side. Leave your answer in simplest radical form.
The missing length of the right triangle is 8√3
Finding the missing length of the right triangleFrom the question, we have the following parameters that can be used in our computation:
The right triangle
The missing length of the right triangle can be calculated using the following Pythagoras theorem
x² = difference of squares of the other sides
Using the above as a guide, we have the following:
x² = (16)² - (8)²
Evaluate
x² = 192
Take the square roots
x = 8√3
Hence, the missing length of the right triangle is 8√3
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Q2. Find constant a and b such that x=-1 & x=1 are both the solution to equation ax²+bx+c=0
Answer:
Step-by-step explanation:
if x = -1,
a-b+c = 0 (eq1)
if x = 1,
a+b+c = 0(eq2)
from eq 1 and 2;
a+c = 0;
so, a = -c,
if a+c = 0, b = 0
Ans : a=-c, b=0
The value of constants a and b are -2 and 0 respectively.
Given: x=-1 and x=1 are both the solution to equation ax²+bx+c=0.
To find: the constant a and b
Solution:
To obtain this, first, we have to simplify the equation by putting x=1 into the given equation, we get;
a+b=-2
afterward, we have to put x=-1 in the given equation, and we get;
a-b=-2
Now, we will add the two obtained equations, we get;
2a=-4 i.e., a=-2
Now, a+b=0 which means the value of b is 0.
Hence, the constants a and b are -2 and 0 respectively.
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Find the equation of the line that goes through the point (-2, -2) and has a slope of -4.
The equation of the line that goes through the point (-2, -2) with a slope of -4 is y = -4x - 10.
To find the equation of a line, we need to use the point-slope form of a linear equation:
y - y₁ = m(x - x₁)
Where (x₁, y₁) is the given point on the line, and m is the slope.
Given that the point is (-2, -2) and the slope is -4, we can substitute these values into the equation:
y - (-2) = -4(x - (-2))
Simplifying:
y + 2 = -4(x + 2)
Expanding the brackets:
y + 2 = -4x - 8
Now, let's rearrange the equation to get it into slope-intercept form (y = mx + b), where m is the slope and b is the y-intercept:
y = -4x - 8 - 2
y = -4x - 10
Therefore, the equation of the line that goes through the point (-2, -2) with a slope of -4 is y = -4x - 10.
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K (Present value of a growing perpetuity) Your firm has taken on cost saving measures that will provide a benefit of $16,000 in the first year. These cost savings will decrease each year at a rate of 3 percent forever. If the appropriate interest rate is 8 percent, what is the present value of these savings? The present value of these cost savings is S (Round to the nearest cent.)
To calculate the present value of the cost savings, we can use the formula for the present value of a growing perpetuity. The formula is:
K = C / (r - g)
Where:
K = Present value of the growing perpetuity
C = Cash flow in the first year
r = Interest rate
g = Growth rate
In this case, C = $16,000, r = 8% (or 0.08), and g = -3% (or -0.03). We use a negative sign for the growth rate since the cost savings are decreasing each year.
Now we can substitute the values into the formula and calculate the present value:
K = 16000 / (0.08 - (-0.03))
K = 16000 / 0.11
K ≈ $145,454.55
Therefore, the present value of these cost savings is approximately $145,454.55.
Please, help me find the answer to this equation:
f(x) = 1 − x − cos (x2)
a) Show that the equation f(x) = 0 has a root α in the interval 1.4 < α < 1.5.
b) Using x0 = 1.4 as a first approximation to α, apply the Newton–Raphson procedure once to f(x) to find a second approximation to α, giving your answer to 3 decimal places.
c) By considering the change of sign of f(x) over an appropriate interval, show that your answer to part b is correct to 3 decimal places.
Given f(x) = x − 7 and g(x) = x2
g(f(−1))
Tickets to a movie cost $11 for photographers and $7 for camera assistants.
A group of photographers and camera assistants purchased 8 tickets for
$76. How many photographers and how many camera assistants attended
the movie?
9. Two desserts, a chocolate lava cake and a caramel apple tart were sold
today. Find how many of each desserts sold if the sum of the two desserts
is equal to 57 and difference of the two desserts is 27.
10. Brian spent $250,000 in start up of his restaurant. Each meal cost $17.50
to make. If each meal is sold for $35.00, how many meals need to be
served for Brian to break even? Round to the nearest number of meals.
9. 42 chocolate lava cakes and 15 caramel apple tarts were sold.
10.Brian needs to sell approximately 14,286 meals to break even.
9. Let's denote the number of chocolate lava cakes as x and the number of caramel apple tarts as y. We can set up a system of equations based on the given information:
x + y = 57 (sum of the two desserts is equal to 57)
x - y = 27 (difference of the two desserts is 27)
We can solve this system of equations using the method of substitution or elimination. Let's use the method of elimination:
Add the two equations:
(x + y) + (x - y) = 57 + 27
2x = 84
x = 42
Substitute the value of x into one of the equations to find y:
42 - y = 27
y = 42 - 27
y = 15
Therefore, 42 chocolate lava cakes and 15 caramel apple tarts were sold.
10. To determine the number of meals Brian needs to sell to break even, we can calculate the break-even point by comparing the total cost and the total revenue.
Total cost = $250,000 (start-up cost) + ($17.50 per meal) * N (number of meals)
Total revenue = ($35.00 per meal) * N (number of meals)
To break even, the total cost should be equal to the total revenue:
$250,000 + ($17.50 per meal) * N = ($35.00 per meal) * N
Simplifying the equation:
$250,000 = $35.00N - $17.50N
$250,000 = $17.50N
N = $250,000 / $17.50
N ≈ 14,285.71
Since we cannot sell a fraction of a meal, we round the number of meals up to the nearest whole number.
Therefore, Brian needs to sell approximately 14,286 meals to break even.
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Which function has the same range as f (x) = negative 2 StartRoot x minus 3 EndRoot + 8?
The range of g(x) is [8, ∞).Thus, the function g(x) = -2√x + 8 has the same range as f(x) = -2√(x - 3) + 8.
Let f (x) = -2√(x - 3) + 8. The function g(x) has the same range as f (x) if the range of f(x) is equal to the range of g(x). Let's determine the range of f(x).Range of f(x):The domain of f(x) is all non-negative real numbers because the square root of a negative number is not a real number. In other words, x - 3 ≥ 0 ⇒ x ≥ 3. This implies that f(x) is a decreasing function because as x increases, the value of f(x) decreases.
Furthermore, the minimum value that f(x) can take is 8, which occurs when x = 3. As x approaches infinity, the value of f(x) approaches negative infinity, but never quite reaches it. Therefore, the range of f(x) is [8, ∞).In order for g(x) to have the same range as f(x), its range must also be [8, ∞). Therefore, g(x) must also be a decreasing function that is bounded from below by 8.
A possible function that satisfies these conditions is g(x) = -2√x + 8. Let's check the range of g(x):Range of g(x):As with f(x), the domain of g(x) is all non-negative real numbers. g(x) is also a decreasing function because as x increases, the value of g(x) decreases. Furthermore, the minimum value that g(x) can take is 8, which occurs when x = 0. As x approaches infinity, the value of g(x) approaches negative infinity, but never quite reaches it
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In this triangle, the product of sin B and tan C is
90°
and the product of sin C and tan B is
In this triangle, the product of sin B and tan C is[tex]b^2/(ac)[/tex] , and the product of sin C and tan B is [tex]c^2/(ab)[/tex].
In a right-angled triangle ABC, where angle A is 90 degrees, we have the following side lengths:
AB = c (base)
BC = a (hypotenuse)
AC = b (perpendicular)
We need to calculate the products of sin B and tan C, and sin C and tan B.
First, let's calculate sin B and tan C:
sin(B) = opposite/hypotenuse = AC/BC = b/a
tan(C) = opposite/adjacent = AC/AB = b/c
The product of sin B and tan C is sin(B) * tan(C) = (b/a) * (b/c) = [tex]b^2[/tex]/(ac).
Next, let's calculate sin C and tan B:
sin(C) = opposite/hypotenuse = AB/BC = c/a
tan(B) = opposite/adjacent = AB/AC = c/b
The product of sin C and tan B is sin(C) * tan(B) = (c/a) * (c/b) = [tex]c^2[/tex]/(ab).
Therefore, in the given right-angled triangle ABC, the product of sin B and tan C is[tex]b^2[/tex]/(ac), and the product of sin C and tan B is [tex]c^2[/tex]/(ab).
These formulas hold true for any right-angled triangle, where the base is AB, the hypotenuse is BC, and the perpendicular is AC.
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The question probable may be:
In this triangle, the product of sin B and tan C is _____ , and the product of sin C and tan B is _______.
PLEASE HELP I NEED THE ANSWER QUICKLY!!!
The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.
Bay Side School Seaside School
8, 6, 5 0 5, 8
8, 6, 5, 4, 2, 0 1 0, 1, 2, 5, 6, 8
5, 3, 2, 0, 0 2 5, 5, 7, 7, 8
3 0, 6
2 4
Key: 2 | 1 | 0 means 12 for Bay Side and 10 for Seaside
Part A: Calculate the measures of center. Show all work. (2 points)
Part B: Calculate the measures of variability. Show all work. (1 point)
Part C: If you are interested in a smaller class size, which school is a better choice for you? Explain your reasoning. (1 point)
Part A: The mean and median for Bay Side School are 3.8 and 5, respectively, while for Seaside School they are 4.93 and 5.
Part B: The range and IQR for Bay Side School are 8 and 4, respectively, while for Seaside School they are 8 and 2.
Part C: Bay Side School is a better choice for smaller class sizes due to its smaller mean, smaller range, and larger IQR.
Part A: Measures of Center
Bay Side School:
Mean = 3.8 (The sum of all class sizes divided by the number of classes)
Median = 5 (The middle value when class sizes are arranged in ascending order)
Seaside School:
Mean = 4.93 (The sum of all class sizes divided by the number of classes)
Median = 5 (The middle value when class sizes are arranged in ascending order)
Part B: Measures of Variability
Bay Side School:
Range = 8 (The difference between the maximum and minimum class sizes)
Interquartile Range (IQR) = 4 (The difference between the first quartile and third quartile)
Seaside School:
Range = 8 (The difference between the maximum and minimum class sizes)
Interquartile Range (IQR) = 2 (The difference between the first quartile and third quartile)
Part C: Conclusion and Reasoning
If you are interested in a smaller class size, Bay Side School is a better choice. Bay Side School has a smaller mean (3.8) compared to Seaside School (4.93), indicating a generally smaller class size. Additionally, the median class size is the same for both schools, but the range and IQR are smaller for Bay Side School.
This suggests that class sizes at Bay Side School have less variation and are more consistently smaller. Therefore, based on the provided data, Bay Side School is the better choice for smaller class sizes.
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The average high temperatures in degrees for a city are listed 58, 61, 71, 77, 91, 100, 105, 102, 95, 82, 66, 57 If a value of 82° is changed to 94° which of the following measures changes the most and what is the new value? O IQR 34° O Range 48° • Mean 81 4° O Median 84°
The measure that changes the most when the value of 82° is changed to 94° is the Median, which becomes 84°.
To determine which measure changes the most when the value of 82° is changed to 94°, we need to calculate the measures for both the original and new data.
Given the average high temperatures: 58, 61, 71, 77, 91, 100, 105, 102, 95, 82, 66, 57.
First, let's calculate the original measures:
Mean: The mean is the average of all the values.
Mean = (58 + 61 + 71 + 77 + 91 + 100 + 105 + 102 + 95 + 82 + 66 + 57) / 12 = 81.4°.
Median: The median is the middle value when the data is arranged in ascending order.
Arranging the data in ascending order: 57, 58, 61, 66, 71, 77, 82, 91, 95, 100, 102, 105.
The median is the 6th value, which is 82°.
Range: The range is the difference between the highest and lowest values.
Range = Highest value - Lowest value
= 105 - 57
= 48°.
IQR (Interquartile Range): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1).
Calculating Q1 and Q3:
Q1 = 66, Q3 = 95.
IQR = Q3 - Q1
= 95 - 66
= 29°.
Now, let's calculate the new measures after changing the value of 82° to 94°:
Mean: The mean is unaffected by changing a single value.
Median: Since we only changed one value, the new median will still be the same as the original median, which is 82°.
Range: The range is unaffected by changing a single value.
IQR (Interquartile Range): The IQR is unaffected by changing a single value.
Therefore, the measure that changes the most when the value of 82° is changed to 94° is the Median, which becomes 84°.
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Which equation can pair with x + 2y = 5 to create an inconsistent system?
Answer:The equation that can be paired with x + 2y = 5 to create an inconsistent system is given by:
2x + 4y = 3.
Step-by-step explanation:
A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
An inconsistent system is a system that has no solutions, and it happens when the coefficients of x and y are multiples, and the independent terms are not.
Hence:
x + 2y = 5.
2x + 4y = 3.
Is inconsistent, as the variables are each multiplied by 2, but the independent term is not.
A athlete eats 65 g of protein per day while training how much protein will she eat during 17 days of training
Answer: 1105 grams of protein
Step-by-step explanation:
If the athlete eats 65 grams of protein per day, we multiply that by 17 for the amount of days.
1105x65=1105
Calculate the surface area. Shoe all steps and round to 2 decimal places.
The surface area of the rectangular prism is 108 cm².
To calculate the surface area of an object, you need to measure the areas of all of its faces and then add them up.
The formula for the surface area of a rectangular prism is SA = 2lw + 2lh + 2wh, where l is the length, w is the width, and h is the height.
To calculate the surface area of a rectangular prism,
Measure the length, width, and height of the rectangular prism in centimeters.
Use the formula SA = 2lw + 2lh + 2wh to calculate the surface area. Plug in the values for l, w, and h, and perform the necessary calculations.
This will give you the surface area in square centimeters.
Round the answer to two decimal places to get the final answer.
The following example demonstrates how to calculate the surface area of a rectangular prism.
Example:
Calculate the surface area of a rectangular prism with a length of 6 cm, a width of 4 cm, and a height of 3 cm.
Measure the length, width, and height of the rectangular prism in centimeters.
l = 6 cmw = 4 cmh = 3 cm
Use the formula SA = 2lw + 2lh + 2wh
To calculate the surface area.
SA = 2lw + 2lh + 2whSA = 2(6 cm × 4 cm) + 2(6 cm × 3 cm) + 2(4 cm × 3 cm)SA
= 48 cm² + 36 cm² + 24 cm²
SA = 108 cm²
Round the answer to two decimal places to get the final answer.
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What is four-twelfths times seven? Your answer should be in whole or mixed number form.
