Explain how you use substitution to solve a system of linear equations.

Answer:     Step 1 : First, solve one linear equation for y in terms of x .

   Step 2 : Then substitute that expression for y in the other linear equation.

   Step 3 : Solve this, and you have the x -coordinate of the intersection.

   Step 4 : Then plug in x to either equation to find the corresponding y -coordinate.

Step-by-step explanation: MARK ME AS BRAINLIEST PLEASE PLEASE PLEASE!!!

Ms. Sacco needs to have her car repaired, but she does not want to spend more than $375 for the repairs. The mechanic says that the part needed for the repair will cost $100 and the labor will cost an additional $40 per hour. Which inequality below represents the greatest number of hours the mechanic can work without exceeding Ms. Sacco’s budget? *

A. 140x ≤ 375
B. 40 + 100x > 225
C. 100 + 40x ≤ 375
D. 100 + 40x > 375

This high school stadium contains a track that surrounds a soccer field. The soccer field is 100 yards long and 70 yards
What is the area of one of the semicircles at either end
The school decided to cover the semicircles with grass to create a space for stretching and other activities. How many square yards of grass will the school need to cover the entire circle
What is the distance around one of the semicircles at either end of the soccer field
What is the distance around the inner lane of the track the lane closest to the soccer field

PLEASE HELP!
asap

The graph below shows the price, y, in dollars, of different amounts of granola, x, in pounds:

A graph titled Granola Prices shows Number of Pounds on x axis and Price in dollars on y axis. The scale on the x axis shows numbers from 0 to 12 at increments of 2, and the scale on the y axis shows numbers from 0 to 48 at increments of 8. A straight line joins the ordered pairs 0, 0 and 12, 48

Which equation best represents the relationship between x and y?

y = 8x
y = x + 4
y = 4x
y = x + 8

Simplify f^9h^23 divided by f^3h^17 Please help, and I will give Brainliest.

please help asap
for 7th grade

Compare the two box plots below. Which would have a larger IQR?


Question 4 options:

They have the same IQR


Varsity has a larger IQR


Junior Varsity has a larger IQR


There is not enough information provided

Solve and DONT simplify 9/18 + 1/3

Mary bought a blanket that was
2 1/4

meters long and
1 1/2
meters wide. What is the perimeter of her blanket?

A license plate has space for 3 numbers and 3 letters. If the letters and numbers do not repeat, how many combinations are there?

HELP ASAP !! THANK YOU <3

What are all things linked together by?



a
plant plankton
b
what they eat
c
small fish
d
temperature
Question 2 (2 points)
Which is at the top of their food chain?

a
plankton
b
shrimp
c
small fish
d
humans
Question 3 (2 points)
A food chain is part of a more complex web known as a _______.

a
food grid
b
food web
c
omnivore
d
carnivore
Question 4 (2 points)
What is a decomposer?

a
Plant eater
b
Meat eater
c
plant and meat eater
d
organism that breaks down dead plants and animals
Question 5 (2 points)
Which describes an omnivore?

a
meat eater
b
plant eater
c
meat and plant eater
d
organism that breaks down dead plants and animals
Question 6 (2 points)
What are the three main parts of a food web?

a
human, plants, animals
b
omnivore, carnivore, herbivore
c
producer, consumer, decomposer
d
food web, food chain, food spider
Question 7 (2 points)
What are two reasons listed in the passage that would be why plankton populations are decreasing?

a
pollution and predators
b
change in temperature and death rate
c
predators, and emigration
d
pollution and change in temperature
Question 8 (2 points)
Which location is the food chain listed in the second paragraph of the passage?

a
ocean
b
desert
c
grassland
d
rainforest
Question 9 (2 points)
Which TWO are examples of decomposers?

a
Apple Tree
b
Lion
c
Earth worm
d
Human
e
Mushroom
f
Sunflower
Question 10 (2 points)
What does it mean to be at the top of a food chain?

a
you are at risk of being eaten by predators
b
you do not have to worry about being eaten by predators
c
you create all of the other levels of the food chain
d
you decompose what is in the other levels of the food chain

2⁄3 + 1⁄6 + 2⁄8 = ??

This pattern follows the rule add 9. What are the next 3 terms?

A. 36, 45, 54
B. 39, 48, 57
C. 42, 51, 60
D. 54, 63, 72

what is –2.5(7.5 – 3x)?

please help again again wonderful people!
When plotting points on the coordinate plane below, which point would lie on the y-axis?

A coordinate plane.

(0, 1)
(7, 0)
(6, 8)
(8, 2)

find the 4 digit code btw its not 5396 or 6935
im asking this again to see if any new people can help im desperate please helpp

- which equation represents the proportional relationship described below? Each pack of gum is $2.00

C = 2g
C = 2 + g
C = g + 2
C + 2 = g


​

This pattern follows the rule divide by 3, then add 7. What are the next two numbers?

294, 105, 42, ________, ________

Question 8 options:

14, 7


21, 14


38, 34


49, 56

This year, Cornell’s class took one more than three times as many field trips as last year’s class. This year, Cornell’s class took a total of 7 trips. How many field trips did his class take last year?

PLEASE HELP!

Suppose Malik had pound of chicken and uses 3 pound to make one batch of eggrolls. How many batches of eggrolls could he make?​

I need help really fast plz ​

Charles had m yards of material. He used 0.4m yards of material to make a costume, 0.2m yards to make pillows and 0.3m yards to make a bag. Which expression shows how many yards of fabric Charles has left? Check all that apply.

(A) 0.1m


(B) 0.9m


(C) m – 0.9m


(D) (0.4 + 0.2 + 0.3)m


(E) (1 – 0.4 – 0.2 – 0.3)m


(F) m – (0.4 + 0.2 + 0.3)m


(G) m – 0.4m – 0.2m – 0.3m


(H) m – (0.4m + 0.2m + 0.3m)

what equation do you get when you solve v-p=v+ax for x?

pls helpppp :)
Solve each inequality by showing work (inverse operations on both sides) OR explaining. Make sure you give the full solution as an inequality.

1. 4x < -20

2. -8 ≥ -2 + x

3. 2x + 4 ≤ 10

Radimir is paving his driveway using brick pavers. The brick pavers that he is using are in the shape of regular pentagons as shown.

What is the area of the pentagon shown?


A. 6.6 square inches
B. 13.2 square inches
C. 33 square inches
D. 66 square inches

HHHHHEEEEELLLLLPPPPP

Find the volume of the cylinder:
Either enter an exact answer in terms of er or use 3.14 form.

what is this pls pls help meeee

The air level in a moped's tire decreases by 8.56×10−9 psi per second due to an air leak.

About how many psi does the air in the tire decrease in 20 hours or 7.2×104 seconds?

Drag and drop the values into the boxes to express the answer in scientific notation.

help with 13,14,15 plsss