Find the solution to the system of equations below. 7x+3y=12 and 7x-3y=30

A.(7, 3)
B.(-3, 3)
C.3, -3)
D.(2, -2)

Answer:

C. (3, -3)

General Formulas and Concepts:

Pre-Algebra

Algebra I

Step-by-step explanation:

Step 1: Define systems

7x + 3y = 12

7x - 3y = 30

Step 2: Solve for x

Step 3: Solve for y

And we have our final answer!

Describe how the graph of is the same and different from the graph of .
Explain or show your reasoning.

Rosemary is driving to Chicago, and she is 84 miles away. She wants to arrive in 1.5 hours. What rate of speed will she have to maintain to arrive in that time?


Rosemary needs to maintain 126 mph.

Rosemary needs to maintain 56 mph.

Rosemary needs to maintain 65 mph.

Don't answer if you're not sure what the answer is. Thanks!

An ice sculpture is melting because of heat. Assuming its height changes bynegative 5 over 32m every hour, what will be the change in height after 4 hours? negative 20 over 8 meters 5 over 8 meters negative 5 over 32 meters negative 5 over 8 meter. ANSWER ASAP

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Who climbed a steeper mountain? Explain.
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Which function is equivalent to h(x)=10x2+9x-1?

A. h(x)=(x-1)(10x+1)

B. h(x)=(x+1)(10x-1)

C. h(x)=(10x+1)(x+1)

D. h(x)=(10x-1)(x-1)

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A.There are the same number of candies as mints
B.There are a total of 44 candies and mints.
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D.There are 10 mints.

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−2
1
2•3
3
4
−2
1
2•3
3
4=nothing ​(Type an​ integer, proper​ fraction, or mixed​ number.)

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PLZ help HOMEWORK 100 ÷ 5 x 4 + 4 to the power of three

Help!
serious answers only please!!!

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1 1
---- x 5 ------
2 4

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Tyler’s brother works in a shoe store.

a) Tyler’s brother earns a commission. He makes 2.5% of the amount he sells. Last week, he sold $900 worth of shoes. How much was his commission?

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Cindy sold 15 tickets to the school play, and Sara sold 25 tickets. What is the ratio of the number of tickets Cindy sold to the number of tickets Sara sold?

Please copy and paste then add ur answer thx
1. =
2. =
3. =
4. =
5. =
6. =
7. =
8. =
9. =
10. =

Please answer correctly.

Help i need answers asap!! there's only a lot of pictures because i waned you to see what i' doing PART !!!!! GO TO MY ACCOUNT AND LOOK AT MY QUESTIONS FOR THE LAST QUESTION

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Equation:

Solution: n=

Given the equation 11.5 - 3y = -48.5, what are the equivalent equations? Choose all that apply.

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D.[tex]\frac{1}{5.5}[/tex]

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The length of the rectangle is
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why does the Separatists wanted to establish their own colony in New England?

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