Solve the system of equations by adding or subtracting.
3x + y = 13
2x + y = 8


The solution of the system is (____, _____).

Answers

Answer 1

Answer:

(5, -2)

Step-by-step explanation:

3(5)=15   15+-2=13

2(5)=10    10+-2=8

hope this helps!

Answer 2
(5, -2) this easy use elimination multiply one of the equations by -1, x,y

Related Questions

(copy nd paste)
Sue and Cathy have $20 left for a cab fare home. The cab fare is $3 per mile plus a $2 fixed charge. What is the maximum number of miles they will be able to travel in the cab?

Answers

Sue and Cathy would be able to travel a total of 6 miles

Answer:

6 miles

Step-by-step explanation:

if u dont mind givin me brainliest im just trying to rank up

Which of the following graphs shows a proportional relationship?

Choose all answers that apply

Answers

A, because of the straight light it goes through the origin
The answer is A cuz yeah

Which expression is equivalent to -1/2(1/4x-3/8)?

A.-1/8x+3/16

B.-1/8x+3/8

C.1/8x-3/16

D.1/8x-3/8

Answers

A is the correct answer

Answer:

A. -1/8x + 3/16

Step-by-step explanation:

How can you show work for 246 over 365 as a percentage

Answers

Answer:

67.4%

Step-by-step explanation:

246/365*100

67.4
Divide 246 by 365 then times by 100

Mr. Villareal made a box out of cardboard using the pattern shown in the figure. How many square centimeters of cardboard does he need to create the box?


96 cm2

336 cm2

544 cm2

488 cm2

Answers

I think its number 3
I got over 544 but #3 is closest to it so say that

y=2x+9 is NOT an equation of a proportional relationship. Why? (answer asap)

Answers

Answer:

Step-by-step explanation:

Because the ratios aren’t equal

Write "The total of a number t and 11" as an algebraic expression.


11–t


t + 11


11t


11÷t

Answers

T+11 because total would mean add them

What is the volume of the prism?


How many cubes with a side length of 13 yard fit into the rectangular prism below?

Answers

1. 17 7/9yd cubic
2. 69 1/3 yd cubic

PART 1: Identify the two equivalent forms for 3/5% below

Equivalent Fraction =

Equivalent Decimal =



PART 2: Select all the expressions that are equivalent to 20% of 150.

A. 1/4*120
B. 25
C. 1/25*120
D. 1/4 ÷ 120
E. 30


*I only made a duplicate of this because some people here don't know how to follow the directions.

Answers

Part 1: Equivalent fraction=3/500
Equivalent Decimal= .006
Part 2: A and E

PLEASE HELP ASAP
Assignment: circumference investigation

Part 1: Measuring parts of a Circle
A. Help Dakota with her homework. Use diagrams of inscribed polygons to approximate the circumference of each circle. Assume that all the circles have a radius of one. Then, calculate the ratio of the approximate circumference to the diameter.

B. Now, assume that all of these circles have a radius of two. Then, calculate the ratio of a proximate circumference to the diameter.

Answers

The answer to this question would have to be the letter B

Find the value of x please help dont know math at all

Answers

B. 14 is your answer. Just divide 140 and 10 to find the value and that’s going to be your answer.

Answer:

D. 4

Step-by-step explanation:

A straight line equals 180 degrees if there's already 140 degrees then you need 40 more to make the line true so 10 times 4 is 40 to make 140 + 40 = 180 true

Which of these are statistical questions? You can pick more than one answer


Question 1: How many minutes does it usually take you to get from home to work?

Question 2: During the past year did you work for more than 50 weeks?

Question 3: During the past year how many hours did you usually work each week?

Question 4: How many extra hours did you work each week?

Answers

Answer:

1: about 12min 2:yes 3: 55 4: 5

Step-by-step explanation: why do you ask

Cool cool cool cool !

The bike store marks up the wholesale cost of all of the bikes they sell by 30%.

Andre wants to buy a bike that has a price tag of $125. What was the wholesale cost of this bike?

If the bike is discounted by 20%, how much will Andre pay (before tax)?


(Please make sure to add a good explanation on how you found the answer because I have seen some where I didn't understand where a certain number came from.)

Answers

Answer:

Wholesale: $37.50

Discount: $7.50

Explanation:

*The wholesale cost of all the bikes they sell is 30%

*Andre wants to buy a bike for $125

*If the bike is discounted by 20%

[tex]\frac{30}{100}[/tex] = [tex]\frac{x}{125}[/tex] (solve for x)

100x = 125 x 30

100x = 3750

(x =  $37.50 for the wholesale)

For the discount, we need to find 20% of 37.5

An easier way we can do is to find 10% and to multiply by 2. So, move the decimal to the left of 37.5 and we get 3.75 and multiply by 2

3.75 x 2 = 7.5 ($7.50 the discount)

*

Answer:

$37.50

$7.50

Step-by-step explanation:

A data set is made up of these values. 4, 6, 7, 8, 9, 12, 15 Find the interquartile range. O A. 6 - 4 = 2 O B. 12- 6 = 6 O C. 15 - 4 = 11 O D. 15 - 8 = 7​

Answers

Answer: The answer is b.

Step-by-step explanation:

Write and evaluate the expression. Then, complete the statements. ten less than the quotient of thirty and a number Evaluate when t= 2 A 2-column table with 5 rows. Column 1 is labeled Key Words with entries ten, less than, quotient, thirty, a number. Column 2 is labeled replace with entries 10, minus, divided by, 30, t. First, write the expression _____ . Second, _____ 2 in for the variable, t. Third, ____ by using ____. The answer is ____.

Answers

Answer:

First, write the expression

✔ 30/t – 10

.

Second,

✔ substitute

2 in for the variable, t.

Third,

✔ simplify

by using

✔ order of operations

.

The answer is

✔ 5

.

Step-by-step explanation:

hope this helps have a nice day

eh does anyone know this XD

Answers

Answer:

9/3

Step-by-step explanation:

It's going up by 9 and going right by 3.

Remember it's rise over run.

Answer:

f(x)=3x-3

Step-by-step explanation:

Slope=y/x

3/1=3x

Y intercept is -3

Put the slope and y intercept together and you get 3x-3

11= s/4 + 9
Can you help me?

Answers

11-9=2
2=s/4
4(2)=(s/4)4
8=s

EXPERT HELP: EXPLAIN THE ANSWER

Answers

Answer:

A

Step-by-step explanation:

A. The average height is greater since it has a higher mean, it also vareis less

Why the others wouldn't make sense?

B. While the average height is greater, Vareity A has a smaller MAD so that means it is more consistent with it experiment results.C is wrong, the minimum height of Vareity A is 16 , while Vareity B maximum height is 18. This means Maximum B was taller than Vareity A at one point.D is wrong, Vareity A max height is 20 while Vareity b max height is 18. 20>18 so that is false

Matt has
4
1
2
boxes of sports trading cards. Football cards make up
3
5
of Matt's trading cards. How many boxes of football cards does Matt have?

Answers

Answer:

Fix the layout of the question because I cant tell the numbers

Step-by-step explanation:

The answer is 2 7/10 boxes

can you help me plsssssss

Answers

Answer:

120

Step-by-step explanation:

Find the surface area of the prism.
A right rectangular prism has a width of 5 meters, length of 12 meters, and height of 9 meters.
A. 426 m2
B. 306 m2
C. 336 m2
D. 213 m2

Answers

306 m2, i think! please check before putting it. ( all you have to do is do calculations).
B.306 m^2 will be correct

ANSWER THESE TWO QUESTIONS FOR ME:

1. If the surface area of a cube is 390 cm², then which best describes the length of the side of the cube?

A. less than 7 cm
B. between 7 cm and 8 cm
C. between 8 cm and 9 cm
D. greater than 9 cm

2. The net below shows equilateral triangles. What is the total surface area of the triangular pyramid in square feet?

Answers

Answer:

65^2

Step-by-step explanation:

if you woulndt mind giving me brainliest im trying to rank up, only if u dont mind.

#1:

Between 8 cm and 9 cm

Work:

SA = 6s^2  

390 = 6 s^2

390/6 = 6s^2 /6

65 = s^2

sqrt(65) = s

s = 8.06

#2:

The total surface area of the triangular pyramid is 107 * square feet.

What is a triangular pyramid?

Take a triangle. This is a base. Now take 3 triangles such that each of them are connected to one-one side of the first triangle and when they're taken together, they form a closed object, called as a triangular pyramid.

We are given that;

The length of median from outer triangle to side of the inner triangle is 8 ft

Side of inner equilateral triangle is 12 ft

Now,

First, we can find the height of the outer equilateral triangle using the Pythagorean theorem:

a is half the length of the side of the inner triangle (6 ft), m is the length of the median (8 ft), and b is the length of the side of the outer triangle (unknown).

a^2 + (m/2)^2 = b^2

b^2 = 6^2 + 8^2/4

b^2 = 36 + 4

b^2 = 40

b = sqrt(40)

b = 2 * sqrt(10)

So the height of the outer triangle is:

h = b * sqrt(3)/2

h = sqrt(30)

Now we can find the area of each equilateral triangle using the formula:

A = (sqrt(3)/4) * s^2

For the inner triangle:

A_inner = (sqrt(3)/4) * 12^2

A_inner = 36 * sqrt(3)

For the outer triangle:

Now we can find the area of the base, which is just the area of the inner equilateral triangle:

A_base = A_inner

A_base = 36 *

Finally, we can find the surface area of the triangular pyramid by adding the areas of the four triangles and the base:

SA = A_inner + 3 * A_outer + A_base

help for brainliest pl=z

Answers

1.) 0.5= 5/9
2.) 0.12=4/33
3.) 1.185=237/200
4.) 1.062=531/500
Good luck

giving brainliest for correct answers::
<3

Answers

Answer:

D. 15

Step-by-step explanation:

does anyone know how to do this?

Answers

(6,-2) is the answer sorry if I’m wrong

Write and solve an equation to answer the problem: The final bill for dinner, including tip was $172.50. If the diners tipped 15%, what was the bill before the tip?

Answers

The bill was $150 without tip and 172.50 with tip

Tip Total: $ 25.88

Total (Bill + Tip): $ 198.38

I need all possible combinations: A,B,(A or D), (A or C), A
It must be in that order and must have 5 letters.
Ex: (This is an example using A,B,C)
ABC
ACB
BAC
BCA
CBA
CAB

Answers

Answer:

ABCDA

Step-by-step explanation:

I need help with this. Instructions: Write an inequality for each problem and solve.

Thank you! :>

Answers

answer:

step-by-step explanation:

Hope this helps :)

Find the volume of the figure. A rectangular prism is shown. The length is labeled 5 meters. The width is labeled 10 meters. The height is labeled 2 meters. Enter the correct answer in the box.

Answers

Answer:

2?

Step-by-step explanation:

Hi! This is a fairly simple question for some of you, but I wanted to ask, how do you solve this? Thank you so much! :)

Answers

Hey I got to it c c c c c c c c c c c c c c c c 8 8
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