The value of x in the solution to this system of equations is,
⇒ x = - 8
We have to given that;
A system of linear equations is shown are,
x - 3y = 7 ... (i)
x - 2y = 2 ... (ii)
Now, We can simplify as;
From (i);
x = 7 + 3y
Put in (ii);
7 + 3y - 2y = 2
7 + y = 2
y = - 7 + 2
y = - 5
Hence, From (i);
x - 3 x - 5 = 7
x + 15 = 7
x = - 15 + 7
x = - 8
Thus, The value of x in the solution to this system of equations is,
⇒ x = - 8
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50-50x[3-3x{4-4x2}-5+5x2]
The simplified form of the given expression is -50(12x⁴-5³+12x²+2x+1).
The given expression is 50-50x[3-3x{4-4x²}-5+5x²].
Here, 50-50x[3-12x+12x³-5+5x²]
= 50-50x[-2-12x+12x³+5x²]
= 50+100x+600x²-600x⁴-250³
= -600x⁴-250³+600x²+100x+50
= -50(12x⁴-5³+12x²+2x+1)
Therefore, the simplified form of the given expression is -50(12x⁴-5³+12x²+2x+1).
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NO LINKS!! URGENT HELP PLEASE!!
Using the information given in each diagram below, decide if any triangles are congruent, similar but not congruent, or similar. If you claim the triangles are congruent or similar, create a flowchart justifying your answer. Part 1
Please help me with #22 and 24
Answer:
22. Congruent traingle
24. Similar traingle
We need to compare their corresponding sides and angles to determine if the two triangles are congruent or similar.
Attached flowchart to help you determine if two triangles are congruent or similar: See Attachment:
Properties of the similar triangle:
Corresponding angles are congruent: The corresponding angles of similar triangles are congruent. This means that if we label the corresponding angles of two similar triangles as A, B, and C and A', B', and C', respectively, then angle A is congruent to angle A', angle B is congruent to angle B', and angle C is congruent to angle C'.Corresponding sides are proportional: The corresponding sides of similar triangles are proportional. This means that if we label the corresponding sides of two similar triangles as a, b, and c and a', b', and c', respectively, then a:b::a':b' and b:c::b':c'.Ratios of corresponding sides are equal: The ratios of the corresponding sides of similar triangles are equal. This means that a/b = a'/b' and b/c = b'/c'.Perimeters and areas are proportional: The perimeters of similar triangles are proportional to the ratios of their corresponding sides, and the areas are proportional to the ratios of their corresponding sides squared. For example, if the ratio of the corresponding sides of two similar triangles is 2:3, then the ratio of their perimeters is also 2:3, and the ratio of their areas is 4:9.Height and base are proportional: The height of similar triangles is proportional to the ratios of their corresponding sides. This means that if two similar triangles have heights h and h', respectively, and corresponding sides a and a', then h/h' = a/a'. Similarly, if the triangles have bases b and b', then the ratio of their heights is also b/b'.Properties of the Congruent Triangle:
Corresponding sides and angles are congruent: In congruent triangles, corresponding sides and angles are congruent. This means that if we label the corresponding angles of two congruent triangles as A, B, and C and A', B', and C', respectively, then angle A is congruent to angle A', angle B is congruent to angle B', angle C is congruent to angle C', and side AB is congruent to side A'B', side AC is congruent to side A'C', and side BC is congruent to side B'C'.Congruent triangles have equal perimeters: Congruent triangles have the same size, so their perimeters are equal.Congruent triangles have equal areas: Congruent triangles have the same size, so their areas are equal.The sum of interior angles is always 180 degrees: The sum of the three interior angles of a triangle is always 180 degrees, regardless of whether the triangle is congruent or similar.The altitude, median, and angle bisector of a triangle are also congruent: In congruent triangles, the altitude, median, and angle bisector of one triangle are congruent to the corresponding altitude, median, and angle bisector of the other triangle.Write a quadratic function in standard form that models the data.
64.
66.
X
y
-2
-1
-
4
8
Ay
0
2
1
0
2 (2,-1).
2
2
6 x
(4,-5)
3
8
65.
67.
x
y
-2
graphs, and
-2
-1
AVA
1.5
0
(1,0)
2
-1
-0.5
0.5 0.5
(4,0)
6 x
(3,-10)
0
0
A quadratic function in standard form that models the data is f(x) = f(x) = 0.5x² + 4x - 8.
How to write a quadratic function of the line of best fit for the data set?In order to determine a quadratic function for the line of best fit that models the data points contained in the graph (scatter plot), we would have to use a graphing calculator (Microsoft Excel).
Based on the scatter plot (see attachment) which models the relationship between the x-values and y-values, a quadratic function for the line of best fit is given by:
f(x) = f(x) = 0.5x² + 4x - 8
In conclusion, we can reasonably infer and logically deduce that the scatter plot most likely indicates an inverse relationship between the x-values and y-values.
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
(72x - 48y) - (61x + 27y)
Answer: 11x-75y
Step-by-step explanation: Hope this is what you're looking for.
Answer:
11x -75y
Step-by-step explanation:
To solve this problem you first have to distribute and simpify.
In this problem you have a -(61x+27y), the parentnesses and the - sign in front tells us you need to distribute the parentnessess. Doing this gives us an answer of -61x -27y.
The next step is to combine like terms and simiplfy.
[tex](72x-61x)+(-48y-27y)\\\\11x -75y[/tex]
So know we have our answer.
Use properties of logarithms to condense the logarithmic expression. Write the expression as a
single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.
8ln (x-6) - 11 In x
We can rewrite the expression as ln(x-6) - 11*ln(x)/8, which can then be evaluated by using a calculator.
What is logarithm?Logarithmic functions can be used to describe relationships between two variables that involve exponential rates of change.
The logarithmic expression 8ln (x-6) - 11 In x can be written as a single logarithm whose coefficient is 1 by using the properties of logarithms.
First, we rearrange the terms to put the ln terms together: 8ln (x-6) - 11lnx = ln(x-6) - 11lnx/8.
We can then use the property of logarithms that states that
log(ab) = log a + log b.
This allows us to rewrite the expression as ln(x-6/x¹¹/8). Finally, we can simplify the expression by using the property of logarithms that states that log(a/b) = loga - logb. This allows us to rewrite the expression as ln(x-6) - ln(x¹¹/8). The final expression is ln(x-6) - ln[(x¹¹/8)], which is a single logarithm whose coefficient is 1.
If we were to evaluate the expression, we could use the property of logarithms that states that logaᵇ = b*log a.
We can rewrite the expression as ln(x-6) - 11*ln(x)/8, which can then be evaluated by using a calculator.
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9. Jose and Lisa Sanchez created a spreadsheet to chart their income and expenses for the month. The sum of their fixed expenses is in cell B10, the sum of their variable expenses is in cell B23,
the sum of their pro-rated non-monthly expenses is in cell B40. What formula should be entered in the spreadsheet cell that contains
All changes saved
and
their total expenses?
=SUM(B10-B40)
O O
=SUM(B10:B23:B40)
=SUM(B10*B23*B40)
=SUM(B10+B23+B40)
Answer:
To calculate the total expenses of Jose and Lisa Sanchez in the given scenario, the formula that should be entered in the spreadsheet cell is =SUM(B10+B23+B40). This formula will sum up the fixed expenses in cell B10, variable expenses in cell B23, and the pro-rated non-monthly expenses in cell B40 to give the total expenses for the month. Therefore, the answer is option D: =SUM(B10+B23+B40).
Please answer this it’s so diffult for me
Answer:
3/100, 0.3, 33/100, 3.03, 3 3/10, 3.33
How many ounces of a 20% saline solution and how ounces of a 70% saline solution are needed to obtain 25 ounces that is a 50% saline solution?
Step-by-step explanation:
Let x be the number of ounces of 20% saline solution needed, and y be the number of ounces of 70% saline solution needed to obtain 25 ounces of a 50% saline solution.
To solve the problem, we can use the fact that the amount of salt in the final mixture must equal the sum of the amounts of salt in the two original solutions. That is:
0.2x + 0.7y = 0.5(25)
Simplifying this equation gives:
0.2x + 0.7y = 12.5
We also know that the total amount of solution is 25 ounces, so:
x + y = 25
We now have two equations with two variables, which we can solve using algebra. Rearranging the second equation to solve for x in terms of y, we get:
x = 25 - y
Substituting this expression for x into the first equation, we get:
0.2(25 - y) + 0.7y = 12.5
Multiplying out the terms and simplifying gives:
5 - 0.2y + 0.7y = 12.5
0.5y = 7.5
y = 15
Substituting this value for y into the equation x = 25 - y, we get:
x = 25 - 15 = 10
Therefore, we need 10 ounces of the 20% saline solution and 15 ounces of the 70% saline solution to obtain 25 ounces of a 50% saline solution.
Find the equation of the line passing through the points (40,0) and (20,-2). Write your answer in the form
y=mx+b.
[tex](\stackrel{x_1}{40}~,~\stackrel{y_1}{0})\qquad (\stackrel{x_2}{20}~,~\stackrel{y_2}{-2}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{-2}-\stackrel{y1}{0}}}{\underset{\textit{\large run}} {\underset{x_2}{20}-\underset{x_1}{40}}} \implies \cfrac{ -2 }{ -20 } \implies \cfrac{ 1 }{ 10 }[/tex]
[tex]\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{0}=\stackrel{m}{ \cfrac{ 1 }{ 10 }}(x-\stackrel{x_1}{40})\implies {\Large \begin{array}{llll} y=\cfrac{1}{10}x+4 \end{array}}[/tex]
If an angle measures x°, wire an expression for its complement
The complement of angle x degrees can be written as the expression:
(90 - x)°.
What is the Complement of an Angle?The complement of an angle is defined as the angle that, when added to the original angle, will give us a sum in a total of 90 degrees.
This means that, if an angle measure is represented by the variable, x degrees, then its complement is (90 - x) degrees.
By implication, if the measure of an angle is 30 degrees, the complement of 30 degrees would be:
90 - 30 = 60°.
Thus, an angle and its complement will always give a total sum of 90 degrees.
Therefore, the expression we can write for the complement of angle x is:
90 - x
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Find the critical value t Subscript c for the confidence level c=0.98 and sample size n=25.
The critical value t Subscript c is 2.492.
We have,
To find the critical value t Subscript c, we need to use a t-distribution table or calculator.
The critical value will depend on the confidence level and the degrees of freedom, which is n - 1 for a sample size of n.
For a confidence level of c = 0.98 and a sample size of n = 25.
The degrees of freedom df.
= n - 1
= 25 - 1
= 24
Using a t-distribution table or calculator, we can find the critical value t Subscript c that corresponds to a 98% confidence level and 24 degrees of freedom.
Thus,
The critical value t Subscript c is 2.492.
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The height of an outdoor basketball backboard is 12.5 feet, and the backboard casts a shadow 17.33 feet long. Find the angle of elevation of the sun.
The sun is elevated at a about 36.7 degree angle.
How to find the angle of elevation of the sun?We can utilize the tangent function, which connects the opposite and adjacent sides of a right triangle, to get the angle of elevation of the sun:
tan(theta) = adjacent or opposite
The other side in this instance is the basketball backboard's 12.5-foot height. The distance from one side to the other, or 17.33 feet, is the length of the backboard's shadow. We thus have:
theta (theta) = 12.5 / 17.33
We can use the inverse tangent (or arctan) of both sides to find theta:
arctan(12.5 / 17.33) = theta
Calculating the answer, we obtain:
36.7 degrees are theta.
As a result, the sun is elevated at a about 36.7 degree angle.
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The average of five numbers is 25. Four of the numbers are 19, 21, 24, and 25. Find the other number.
If average of five numbers is 25, the numbers are 19, 21, 24, 25. So, the other number is 36.
What is average of numbers?Average is a measure of central tendency that represents the typical or most common value in a set of numbers.
We know that the average of five numbers is 25, so,
Average = {Sum of the five numbers} ÷ 5
25 = (19 + 21 + 24 + 25 + x) / 5
where x is the unknown number we are trying to find.
Cross-multiply and simplify:
25 × 5 = 19 + 21 + 24 + 25 + x
125 = 89 + x
x = 36
Therefore, the fifth number is 36.
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To suprise Olivia on her birthday, Anna is traveling to her Olivia's house, 50 miles away., She stops by the bakery, (7x+8)miles from her own house. If the given distance from the bakery to olivia's house is (2x-3 miles, Anna is traveling
The total distance to Olivia's house is 50 miles and x = 5
Given data ,
Let the total distance to Olivia's house be = 50 miles
Now , the distance from Anna and bakery = ( 7x + 8 ) miles
The remaining distance = ( 2x - 3 ) miles
So , on simplifying the equation , we get
( 7x + 8 ) + ( 2x - 3 ) = 50
9x + 5 = 50
Subtracting 5 on both sides , we get
9x = 45
Divide by 9 on both sides , we get
x = 5
Hence , the equation is solved and x = 5
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7. Suppose you have $100 to invest each month in a tax-deferred retirement
account, such as an Individual Retirement Account (IRA) or a 401(k) plan. The
plan has an average return of 10% per year, and you plan to retire at age 67.
Study the table, and then answer the following questions.
Start investing Total at
retirement
$100 per
month
at age 18
at age 25
at age 35
at age 45
$1,567,088
$788,430
$278,513
$95,317
a) If you invest $100 per month starting at age 18, how much more will you have when you retire than if you waited to start
investing at age 35?
b) If you wait until age 45 to begin investing for your retirement, how much less you would have than if you had begun
investing at age 25?
Answer:
a) If you invest $100 per month starting at age 18, you will have $1,567,088 when you retire. If you wait to start investing at age 35, you will have $278,513 when you retire. Therefore, the difference between the two amounts is:
$1,567,088 - $278,513 = $1,288,575
So, if you invest $100 per month starting at age 18, you will have $1,288,575 more when you retire than if you wait to start investing at age 35.
b) If you wait until age 45 to begin investing for your retirement, you will have $95,317 when you retire. If you had begun investing at age 25, you would have had $788,430 when you retire. Therefore, the difference between the two amounts is:
$788,430 - $95,317 = $693,113
So, if you wait until age 45 to begin investing for your retirement, you will have $693,113 less than if you had begun investing at age 25.
6. Rewrite y = √√4x+16 +5 to make it easy to graph using a translation. Describe the graph.
Answer:
~
Step-by-step explanation:
To make it easier to graph using a translation, we can rewrite the given equation as:
y - 5 = √√4x + 16
This is obtained by subtracting 5 from both sides of the equation.
The graph of the original equation y = √√4x+16 +5 can be obtained by taking the graph of y = √√4x + 16 and shifting it upwards by 5 units. The graph of y = √√4x + 16 is a square root function that has a vertical stretch of 2, a horizontal compression of 4, and a vertical translation of 16 units upwards. So the graph of the given equation y = √√4x+16 +5 will be the same as the graph of y = √√4x + 16, but shifted upwards by 5 units.
Please help!! Two questions
The expression/ equation equivalent to - 3/5 (7 - 3 1/3) is: (- 3/5) (7) + (- 3/5)(- 3 1/3). Option D.
How do you find the expression or equation that is equivalent to - 3/5 (7 - 3 1/3) ?We're given the expression: - 3/5 (7 - 3 1/3)
To find the equivalent expression, first, we should convert the mixed number (3 1/3) to an improper fraction. To do this, multiply the whole number (3) by the denominator (3) and add the numerator (1). This gives us:
3 x 3 + 1 = 9 + 1 = 10
So, 3 1/3 as an improper fraction is 10/3. Now, the expression becomes:
3/5 (7 - 10/3)
Now we can use the distributive property, which states that a(b + c) = ab + ac, to simplify the expression further:
3/5 x 7 + (- 3/5) x (- 10/3)
This expression corresponds to option d:
d. (- 3/5) (7) + (- 3/5)(- 3 1/3) when converted to an improper fraction as (- 3/5)(- 10/3)
The above answer is based on the question below as seen in the picture;
What expression is equivalent to - 3/5 (7 - 3 1/3)?
a) (- 3/5) (-7) + (- 3/5)(-3 1/3)
b. - (- 3/5) (7) - (- 3/5)(3 1/3)
c. - (- 3/5) (7) - (- 3/5)(- 3 1/3)
d. (- 3/5) (7) + (- 3/5)(- 3 1/3)
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What is the length of side PQ in this figure?
The length of side PQ is √52 units in the given figure.
As per the shown figure, we have:
PM = 6
MR = 3
QR = 5
As we can see that there are two right triangles in the given figure.
Using Pythagoras's theorem in ΔQRM,
QR² = MR² + MQ²
5² = 3² + MQ²
MQ² = 25 - 9
MQ² = 16
MQ = 4
Now, using Pythagoras's theorem in ΔQRM to find PQ,
PQ² = PM² + MQ²
PQ² = 6² + 4²
PQ² = 36 + 16
PQ² = 52
PQ = √52
Thus, the length of side PQ is √52 units in the given figure.
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Given: F(x) = 3x 2+ 1, G(x) = 2x - 3, H(x) = x F(-2) =
Answer:
baljeet by 5x2
Step-by-step explanation:
On the Y axis we have the profit from the trucking company and on the X axis we have the miles the truck has traveled. The company decided that they needed to start paying for a driver at a price of 0.25 cents a mile. After this change what will happen to the x and y axis/slope?
A. Y intercept will be less and X will be less
B. Y intercept will be less and X intercept will be greater
C. Y intercept will be greater and X will be greater
D. Y intercept will be greater and X will be less
The correct answer of the given axis related problem is option B.( Y intercept will be less and X intercept will be greater ).
What is axes?
Axes are the lines which are used to measure data on graphs and grids. There are two types of axes: the vertical axis, and another is the horizontal axis.
On the Y axis we have the profit from the trucking company and on the X axis we have the miles the truck has traveled. The company decided that they needed to start paying for a driver at a price of 0.25 cents a mile.
they pay the driver. $0.25 per mile.
this will be their profit.
so, the Y that is the profit values all go down by 0.25.
So, the y-intercept is going down too.
that eliminates the options C and D.
for the given condition to be true they have to have some overhead costs that apply even if there are 0 miles traveled (which means that the y-intercept : the y-value when x value is equals to 0).
so, the line must be in a form
y = ax + b
and since we assumed the line to go up in positive direction which indicates positive slope, a sinking line means that the x-intercept (the break-down point, where the line goes from beneath the x-axis and therefore in negative direction (y) profit up into positive profit) will move to the right (become larger).
because now that they have add on costs (paying the driver), it takes longer (more miles to drive) to make a positive profit.
and this reason eliminates A,
Hence, there is only one option left, B.
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-5u+6=-12u+62???????
Answer:
Step-by-step explanation:
[tex]-5u+6=-12u+62\\\textrm{Add }12u \textrm{ to both sides. }\\-5u+12u+6=-12u+12u+62\\7u+6=62\\\textrm{Subtract 6 from both sides.}\\7u+6-6=62-6\\7u=56\\\textrm{Divide both sides by}7.\\\frac{7u}{7}=\frac{56}{7}\\ u=8[/tex]
Consider the function f(x)=2x−−√−8. If f−1(x) is the inverse function of f(x), find f−1(2)
[tex]f^(-1)(2) = 6[/tex], which is consistent with our earlier result.
What is inverse function?A function that "undoes" another function is known as an inverse function. If f(x) is a function, then f(x inverse, )'s indicated by f-1(x), is a function that accepts f(x output )'s as an input and outputs f(x initial )'s input.
Given the function f(x) = √(2x - 8), if f^(-1)(x) is the inverse function of f(x), what is [tex]f^(-1)(2)[/tex]?
Solution:
To find f^(-1)(2), we need to find the value of x such that [tex]f(x) = 2[/tex] . We can set up an equation:
[tex]f(x) = \sqrt(2x - 8) = 2[/tex]
Squaring both sides, we get:
[tex]2x - 8 = 4[/tex]
[tex]2x = 12[/tex]
[tex]x = 6[/tex]
Therefore, [tex]f^(-1)(2) = 6.[/tex]
We can also verify this result by using the definition of an inverse function. If f^(-1)(x) is the inverse function of f(x), then by definition:
[tex]f(f^(-1)(x)) = x[/tex]
We can substitute x = 2 and solve for f^(-1)(2):
[tex]f(f^(-1)(2)) = 2[/tex]
[tex]f^(-1)(2) = (f(6))^(-1)[/tex]
f(6) = √(2(6) - 8) = √4 = 2
Therefore,[tex]f^(-1)(2) = 6[/tex], which is consistent with our earlier result.
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x=? image attached please help
Answer: 6
Step-by-step explanation:
We can set up a proportion equation since the shapes are similar
12/8 = x/4
multiply both sides by 4
6 = x
x = 6
The dog shelter has Labradors, Terriers, and Golden Retrievers available for adoption. If P(terriers) = 50%, interpret the likelihood of randomly selecting a terrier from the shelter.
Likely
Unlikely
Equally likely and unlikely
This value is not possible to represent probability of a chance event
Answer:
Equally Likely & Unlikely
Explanation:
If terriers make up 50% of the dog shelter that means the 50% that's left is split between the labradors and golden retrievers and the way they're split can be in any way so there's a way anyone can pick any kind of dog no matter the probabilities.
(Also go easy on me if I'm wrong, I'm only in 7th grade)
The average length of a new pencil is 19 cm. How many pencils could be produced from a
cylinder of wood 380 cm long?
Answer:
20
Step-by-step explanation:
Avg length of a pencil= 19cm
length of cylinder=380cm
pencils produced=?
num of pencils produced= length of cylinder ÷ avg length of a pencil
= 380÷19
=20
therefore, number of pencils produced are 20
RECHECK
since avg length of pencil × num of pencils produced must be equal to the length of the given cylinder
19×20=380cm
therefore, our answer is correct
mark me as brainiest with 50 points would mean alot
Hotel rooms in Smalltown are $100/ room per day,
The tax revenue is $ 9000 and Deadweight loss is $500.
We have,
Hotel rooms in Smalltown go for $100, and 1,000 rooms are rented on a typical day.
So, The tax revenue is calculated by :
Tax revenue = Tax Imposed × Quantity sold
= 10 x 900
= $ 9000
Now, The deadweight loss is calculated as:
= 1/2 × Tax imposed × change in quantity sold
= 1/2 x 10 x (1000-900)
= $500
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Look at this mapping diagram: domain 15 -7 9 range 3 20 -3Is this relation a function? Yes or no
+
Example 3: Mrs. Jones found that 40% of the
6th grade likes social studies. If 24 sixth
graders like social studies, then how many
students are in the 6th grade?
Part =
Whole=
Percent=
Answer:
Part = 24 students
Whole = 60 students
Percent = 40%
Step-by-step explanation:
When dealing with percents, we can use the formula
P%x = y, where x is the whole and y is the part.
Since the 24 students is part of the entire group of 6th graders (whole), our y value is 24.
Now, we can solve for x to find how many students are in the 6th grade.
Remember to always convert the percentage t a decimal to simplify the math (40% = 0.40)[tex]0.40x=24\\x=60[/tex]
A single digit between
0
and
9
is randomly chosen, and a single letter from A to Z is randomly chosen.
Find the probability that the number is
6
and the letter is a consonant.
Answer:
17.5%
Step-by-step explanation:
if you know that there is 26 letters in the alphabet and we have 9 colors thats 1 out of 9 and 1 out of 25 so when we and it all up we get 17.5%
PLS GIVE BRAINLIST MEAN THE WORLD
Resolve 1-2x²/(x²+1)(x²+3x-2) to partial fraction
