I will give you brainliest!!! Solve the system of equations by graphing both equations with a pencil and paper y=x-3 y=-x+1
Answer:
A. (2,-1) i thought this is hard but its kind of easy actually
Step-by-step explanation:
so you just put the given options into the xs and ys.. so lets say we have (2,-1) 2=x -1=y
now put them into the equations.. y=x-3
-1=2-3( if this is true than this is the right answer)
y= -x +1
-1= -2 +1 (this is also correct)
Calculate ff(-3). You will get BRAINLIEST.
Answer:
[tex]ff(-3)=-17[/tex]
Step-by-step explanation:
Image attached below.
which of the following is equivalent to the expression below? log3 - log15 A) log(-12) B) log12 C) log(1/5) D) log5 thanks for the help : )
Answer:
log12 144 = 2
log15 1 = 0
log3 ( 81 ) = 4
log 0.00001 = -5
Step-by-step explanation:
According to my far to relaxed brain the answer is correct. Please don't be mad at me.
Answer:
Step-by-step explanation:
First and foremost, we need to point out that if there is no base written on those logs, it is understood to be a base of 10. The next thing applies to the rules of logs in regards to the subtraction of them. Usually, subtraction and addition "undo" each other. But in logs, subtraction and division undo each other in a sense. The rule is:
[tex]log_bm-log_bn=log_b\frac{m}{n}[/tex]
Following that pattern, our solution, or simplification, of
log(3) - log(15) is
[tex]log_{10}\frac{3}{15}[/tex] which, simplified and omitting the base of 10, is:
[tex]log\frac{1}{5}[/tex] , choice C.
I’m confused someone explain please
Answer:
3(x - 12)(x + 2)
Step-by-step explanation:
Given
3x² - 30x - 72 ← factor out 3 from each term
= 3(x² - 10x - 24) ← factor the quadratic
Consider the factors of the constant term (- 24) which sum to give the coefficient of the x- term (- 10)
The factors are - 12 and + 2 , since
- 12 × 2 = - 24 and - 12 + 2 = - 10 , thus
x² - 10x - 24 = (x - 12)(x + 2) and
3x² - 30x - 72 = 3(x - 12)(x + 2)
can i get help please?? A map of the United States is displayed in the classroom with a scale of 0.25 the drawing would be of a road that is 120 miles long. A. 0.03 cm B. 0.3 cm C. 3 cm D. 30 cm
Answer:
30cm
Step-by-step explanation:
0.25 times 120 miles equals 30 cm
Answer:
Step-by-step explanation:
Which formula can be used to describe the sequence? -2/3, −4, −24, −144,... f(x) = 6(negative two-thirds) Superscript x minus 1 f(x) = −6(Two-thirds) Superscript x minus 1 f(x) = Negative two-thirds(6)x − 1 f(x) = Two-thirds(−6)x − 1
Answer:
The third option f(x) = -2/3(6)^(x - 1)
Step-by-step explanation:
-2/3(6)^(x - 1)
When x = 1 the term = -2/3 * 6^(1-1) = -2/3 * 6^0 = -2/3
x = 2 the term = -2/3*(6)1 = -12/3 = -4.
x = 3 the term = -2/3(6)^2 = -72/3 = -24
x = 4 the term = -2/3 * (6)^3 = -2*216/ 3 = -144.
Answer:
ccccccccccccccccccccccccccccccccccccccccc
Step-by-step explanation:
There are 8 times as many males as females on the maths course at university. What fraction of the course are female? Give your answer in its simplest form.
Answer:
⅑
Step-by-step explanation:
Let m represents number of males, and f represents number of females taking the maths course.
Given that number of males (m) taking the maths course is 8 times as much as number of females (f), total number of students taking the maths course (T).
Thus we can represent the information above with the following:
m = no. of males
f = no. of females
T = Total
m = 8f
T = m + f
Thus,
Total = 8f + f = 9f
==>The fraction of the course that are females = No. of females (f) ÷ Total no. of students (T)
= f/9f
Fraction of females in simplified form would be ⅑
I NEED HELP PLEASE, THANKS! :)
Answer: b) increasing for x < -4/3 and x > 4/3
decreasing for -4/3 < x < 4/3
Step-by-step explanation:
Graph the equation and the follow the curve from left to right. When you are going up, it is increasing. When you are going down, it is decreasing.
see the image below. Red is increasing. Blue is decreasing.
The vertices occur when x = -4/3 and x = 4/3
Please help me with this math question
Answer:
80a^9 + 70a^8
Step-by-step explanation:
Use the distributive property and multiply each term in the expression by 10a7
10a7(8a2 + 7a)
80a9+70a8
An investment of $1800 earned $60.75 at a simple-interest rate of 4.5% per year. For how long was the investment held? Question 1 options: a) Nine years b) Three years c) Three months d) Nine months
Answer:
D. Nine months
Step-by-step explanation:
Simple interest=principal×rate×time
Principal=$1800
Rate=4.5%
Time=?
Interest=$60.75
Simple interest=principal×rate×time
60.75=1800×4.5×t/100
60.75=8100t/100
60.75=81t
t=60.75/81
t=0.75 year
0.75 years=9 months
please help me please :(
Answer:
18
Step-by-step explanation:
There is a string that is 3 yards long that is divided into pieces that are 1/6 of yard long. Divide the total length by the length it was divided into to find the number of pieces.
When dividing with fractions, the second number will be inverted and multiplied by the first number.
3 ÷ (1/6) = 3 × 6 = 18
You will have 18 pieces
I don’t know how to solve help pls
Answer:
The measure of angle a is 43 degrees.
Step-by-step explanation:
Angle P is congruent to Angle R. A triangle's angles add up to 180 degrees. 47*2=94. 180-94=86 degrees. 86/2=43 degrees.
Answer: 43°
Step-by-step explanation:
The degree of a triangle adds up to 180. We are given an angle of 47 and there is a right angle of 90
We now have 90 + 47 + a = 180
137 + a = 180
a = 43
Milk and cream are mixed together for a recipe. The total volume of the mixture is 1 cup. If the milk contains 2% fat, the cream contains 18% fat, and the mixture contains 6% fat, how much cream is in the mixture? StartFraction 1 Over 5 EndFraction cup. cup StartFraction 1 Over 4 EndFraction cup. cup StartFraction 3 Over 4 EndFraction cup. cup StartFraction 4 Over 5 EndFraction cup. cup
Answer: 1/4
Step-by-step explanation:
Let the volume of mixture (6%fat) in cup is 100cc
x cc be the volume of cream (18% fat) in the mixture.
∴
(100−x) cc be the volume of milk (2% fat) in the mixture.
x * 0.18+(100−x) * 0.02=100
⋅0.06 or 0.18x − 0.02x = 6−2 or 0.16x
= 4 or x=25 cc = 25%
Please help me I've been stuck on this for a bit
Answer:
A=1.5 units²
Step-by-step explanation:
a²+b²=c²
2.5²+1.5²=c²
a²+2.25=6.25
a²=4.00
a=2
A=1/2 x b x h
A=1/2 x 1.5 x 2
A=1.5 units²
Answer:
1.5
Step-by-step explanation:
Use the pythagorean theorem. a^2+b^2=c^2. a and b are the legs, or the shorter sides of the triangle. If you don't know which ones are shorter, just know that c is opposite of the right angle which is 2.5 in this case. So c is 2.5 and a is 1.5. Now you plug the values into the equation
1.5^2+b^2=2.5^2
2.25+b^2= 6.25 .Simplify the equation
b^2= 4 .Subtract 2.25 from both sides.
b= 2. Square root both sides.
Based on the picture, a is the base and b is the height. The area of a triangle is 1/2(bh) .You already know the base and height you you plug it in again
1/2(1.5*2)= 1/2(3)= 1.5
HELP ME OUT ASAP PLEASE !!!!!! :(((((
Answer:
Step-by-step explanation:
Notice that the measure of angle 5 is congruent, or equal to, the measure of angle 1. You entered this in one of your previous steps. Since the measure of Angle 1 is CONGRUENT to the measure of Angle 5, you can substitute Angle 5 for Angle 1.
Similarly, the measure of Angle 3 is congruent to Angle 6. So you can write that the m(Angle 5) + m(Angle 2) + m(Angle 6) = 180. By method of substitution.
I'm not exactly sure if this is the right order they want you to do it, however I hope this helps.
Please help quick thank you!
Which ordered pair is a solution of the equation? 6x+3y=15
A) Only (3,-2)
B) Only (2,2)
C) Both (3,-2) and (2,2)
D) Neither
Answer:
Neither
Step-by-step explanation:
After substituting the ordered pair into the equation, none of the pairs satisfy the equation
because 6(3)+3(-2)=12 and 6(2)+3(2)=18.
Which graph represents the function f (x) = StartFraction 1 Over x EndFraction minus 1?
Answer:
The last answer, D
Step-by-step explanation:
i got it right on ed
Answer
D
Step-by-step explanation:
just did it
Evaluate g(x) = 1.8x3 -0.0034x + 0.5 for x = 1 and x=2
Answer:
g(1) = 2.2966
g(2) = 14.8932
Step-by-step explanation:
g(1) = 1.8(1)³ - 0.0034(1) + 0.5
g(2) - 1.8(2)³ - 0.0034(2) + 0.5
Plug those into a calc and you should get your answers.
Answer: 2.2966; 14.8932
Step-by-step explanation:
Approximate the change in the lateral surface area (excluding the area of the base) of a right circular cone of fixed height of h = 6 m when its radius decreases from r = 14 m to r = 13.9 m (S= (pi)(r)sqrt(r^2+h^2)? S = __ ?
Answer:
(- 42.8π/√232)m²
Step-by-step explanation:
For any function, y = f(x), we approximately from a to a + ∆x
We can make use of the formula
∆y = f'(a)∆x
Where S = πr√(r² + h²)
We are asked to find S
h = 6m
r = decreases from 14m to 13.9
S = d/dr[ πr√(r² + h²)] ×(13.9 - 14)
Where h = 36m
S = π d/dr [ r √(r² + 6²)] × (13.9 - 14)
S = π d/dr [ r √(r² + 36)] × (13.9 - 14)
Where r = 14m
S = π [√(r² + 36) + r²/√(r² + 36)] × (13.9 - 14)
S = π [√(14²+ 36) + 14²/√(14² + 36)] × (13.9 - 14)
S = π [√(196+ 36) + 196/√(196 + 36)] × (13.9 - 14)
S = π[√232 + 196/√232] × (13.9 - 14)
S = π × - 0. 1 [√232 + 196/√232]
Collecting like terms
S = π × - 0. 1 × 1/√232 [232 + 196]
S = π × - 0. 1 × 1/√232[428]
S =(- 42.8π/√232)m²
ALL THE POINTS!! (01.01 LC) What is the rational number equivalent to 3 point 12 with a bar over 12? (1 point) 3 and 4 over 33 3 and 8 over 33 3 and 10 over 39 3 and 5 over 39
Answer:
A is the answer
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
Solve
5x + 3 = x + 11
Answer:
x=1.75
Step-by-step explanation:
5x+4=x+11
5x-x=11-4
4x=7
divide both sides by 4
4x/4=7/4
x=1.75
If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system
ОА.
There is no solution.
OB.
The lines in a system cannot be parallel.
Ос.
There are infinitely many solutions.
OD.
There is exactly one solution.
Answer:
A
Step-by-step explanation:
The solution to a system of equations given graphically is at the point of intersection of the 2 lines.
If the lines are parallel then they never intersect, thus there can be no solution.
Answer:
ОА.
There is no solution
Step-by-step explanation:
If lines are parallel, they will have no common points, so no solution
Find the volume of the specified cone. Use 3.14 for Pi, and round your answer to the nearest whole number. Diameter = 3 cm, Height = 4 cm a. 57 cu. cm b. 25 cu. cm c. 38 cu. cm d. 9 cu. cm
Answer:
38
Step-by-step explanation:
answer is 37.7, rounded is 38
volume = (1/3) * π * 3² * 4
It is not c. 38 cu. cm
Step-by-step explanation:
xand y are light house. y being 20km due east of x and from a ship due south of x the bearing of y was 055°. what is the distance of the ship from y and the distance of the ship from x?
Answer:
I) |xz| ≈ 28.6 km
II) |yz| ≈ 34.8 km
Step-by-step explanation:
Let's assume that the position of ship due south of x is z (aà pictor representation of the question is attached)
|xy| = 20 km, |xz| = ?, |yz| = ?, θ(y) = 55°
Using Trigonometric ratio - SOHCAHTOA
I) Tan θ = |xz| ÷ |xy| ⇒ Tan 55° = |xz| ÷ 20
|xz| = 20 * Tan 55 = 20 * 1.428
|xz| = 28.56 km
|xz| ≈ 28.6 km
II) Cos θ = |xy| ÷ |yz| ⇒ Cos 55° = 20 ÷ |yz|
|yz| * Cos 55° = 20 ⇒ |yz| = 20 ÷ Cos 55°
|yz| = 20 ÷ 0.574 = 34.84 km
|yz| ≈ 34.8 km
The work accomplished by two people working on
the same task for the same amount of time but at
different rates is given by the equation w = riturit.
When solving this equation for t, which of the
following steps would not be algebraically
correct?
W-r1t = r2t
w = t(r1+ r2)
w= r1r2t
Answer:
w = r1r2t is the correct answer which would be the letter C. This is the one that is not algebraically correct.
Step-by-step explanation:
When solving this equation for t the step w= r₁r₂t would not be algebraically correct.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
The following are the basic principles and steps to summarize any linear algebra statement:
Erase all packaging symbols, such as parenthesis and parenthesis, by dividing factors.
Using the exponent rule, grouping can be rule out if the words contain decimals.
To merge words, omit or add similar pictures.
It is given that,
The work accomplished by two people working on the same task for the same amount of time but at different rates is given by the equation,
w=r₁t+r₂t
Taking t common,
w=(r₁+r₂)t
Rearrange the equation as
t=w / (r₁+r₂)
Thus, when solving this equation for t the step w= r₁r₂t would not be algebraically correct.
Learn more about the linear equation here:
brainly.com/question/11897796
#SPJ2
The given line passes through the points (-4, -3) and (4.
1)
What is the equation, in point-slope form of the line that is
perpendicular to the given line and passes through the
point (-4, 3)?
V-3 -2(x+4)
3-
2-
+
Oy-3 =-{(x+4)
Ov-3 = {(x + 4)
-2
y-3 =2(x + 4)
-3
(-3)
9514 1404 393
Answer:
y -3 = -2(x +4)
Step-by-step explanation:
The slope of the given line is ...
m = (y2 -y1)/(x2 -x1)
m = (1 -(-3))/(4 -(-4)) = 4/8 = 1/2
The perpendicular line will have slope -1/(1/2) = -2.
__
The point-slope equation of the line with slope m through point (h, k) is ...
y -k = m(x -h)
For point (-4, 3) and slope -2, the equation is ...
y -3 = -2(x +4)
you're installing tiles on your kitchen floor it Square Tile has a side length of 14in find the area of one tile
Answer:
The area of one tile would be 196
Step-by-step explanation:
to find area it's length times width and a square is equal
14 times 14 =196
Answer:
196 in^2
Step-by-step explanation:
The area of a square can be found using the following formula.
A=s^2
where s is the side length.
In this case, the square tile has a side length of 14 inches. Therefore,
s=14 inches
A=(14 inches)^2
Evaluate the exponent.
(14 inches)^2=14 inches*14 inches=196 inches^2
A=196 inches^2
The area of one tile is 196 square inches.
what is the graph of y > x2-9.
Answer:
The 1st graph
Step-by-step explanation:
When you graph the equation in a graphing calc, you should be able to see that the graph most similar would be the 1st one.
what is the middle number in between 15 and 24
Answer:
19.5
Step-by-step explanation:
15 + 4.5 = 19.5
24 - 4.5 = 19.5
Answer:
19.5
Step-by-step explanation:
You need to find the average of these 2 numbers to find the "middle number".
(15+24)÷2=
39÷2=
19.5
The "middle number" is 19.5
Thomas took everyone to lunch and there were 11 people at the table. Everyone’s meal cost the same and the total bill was $115.39. How much did each person’s meal cost?
Answer: $10.49
Step-by-step explanation:
Each person's meal cost
115.39 / 11 = 10.49
Answer:
1269.29
Step-by-step explanation:
Thomas took everyone to lunch and there were 11 people at the table. Everyone’s meal cost the same and the total bill was $115.39. How much did each person’s meal cost?
i would do the equation 11x115.39
1x9 1x3 1x5 1x1 1x1
same thing but 0 to end
full number 126929 but remember to add the decimal point
1269.29
