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!

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?

b) The store bought a pair of shoes for $50, and sold it for $80. What percentage was the markup?

c) Tyler’s brother earns $12 per hour. The store offers him a raise—a 5% increase per hour. After the raise, how much will Tyler’s brother make per hour?

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

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

If 2/3 ton of gravel covers 3/4 of a driveway, how many tons of gravel are required to cover the entire driveway? (1 point) Question 10 options: 1) 1/3 ton 2) 1/2 ton 3) 8/9 ton 4) 11/12 ton dont waste my point or you will be reported and do not say anything that is not an answer or a explanation

( -20 , 14 ) and ( 30, 18)
Can someone show me how to do it? This is the example the teacher gave us m = y^2 - y^1 / x^2 - x^1
Plug in 22 - 10 / 5-2
Subtract 12 /3 because 22- 10 = 12 and 5 -2 = 3
Divide m = 4

Givethanks, an Indian, wants to have a turkey dinner. He and his “dog”, Wolf, go looking for a turkey. While on this turkey hunt, they come across a field of corn. Givethanks just has to have some of the corn and picks some to take home. While in the corn field, Givethanks spots the biggest turkey he has ever seen and captures it. On the way home to his village, Givethanks and Wolf come to a river where there is a small boat that will only fit Givethanks and one other thing. Now, Givethanks wants to get Wolf, the turkey and the corn across the river, but Wolf will eat the turkey if they are left alone and the turkey will eat the corn if it is left alone with the corn.


Your Task: Figure out how Givethanks will get Wolf, the turkey and the corn across the river. You must show how you feel he can accomplish this task. explaining how you feel you can accomplish this task.
If anyone can give me like a idea how bec I don’t know

Please answer correctly.

The equation y = 5.5x represents a proportional relationship. What is the constant of proportionality?

A. X
B. y
C. 5.5
D.[tex]\frac{1}{5.5}[/tex]

Which of the following statements could be true regarding the bar diagram? (C = candies, M = mints)
A.There are the same number of candies as mints
B.There are a total of 44 candies and mints.
C.There are 4 more than twice as many candies as mints
D.There are 10 mints.

Given that the expression “p dollars for every q items” describes a unit price, which statement must be true?
p = 1
p = q
q = 1
pq = 1

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

The rectangle shown has a perimeter of 82 cm and the given area. Its length is 5 more
than five times its width. Write and solve a system of equations to find the dimensions of
the rectangle.
The length of the rectangle is
cm and the width of the rectangle is
cm.

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

Rick started his retirement account with \$5,000 when he was 23. When he retired at age 65 , he had 2.2 * 10 ^ 6 dollars in his retirement account . How many times greater was his account when he retired ?

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

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.

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

PLEASE HELP ME FAST!
4. Simplify. Show your work and write your answer as a mixed number in the simplest form.

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

if you didnt know what i wrote its : 1/2 times 5 1/4

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

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?

Are the lines x=2 and y=4 parallel?

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

why does the Separatists wanted to establish their own colony in New England?

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)

Help!
serious answers only please!!!

At Sami's Shoe Warehouse, it takes fraction 4 over 5 of a day to complete fraction 1 over 10 of an order of sneakers. At this rate, how long will it take to complete the entire order of sneakers? 6 days 8 days Mixed number 11 and 1 over 4 days Mixed number 12 and 1 over 2 days. i needs help asap

What does 1.5 times more than x mean?

−7 increased by a number n is 12

Equation:

Solution: n=

Mountain climber Joe climbed to a mountain peak that was1200 feet above its base and 1500 feet east of its base. Mountain climber Bob climbed to a mountain peak that was 900 feet above its base and 1000 feet east of its base.

Who climbed a steeper mountain? Explain.
and please don't just put nonsense. only answer if you know. i am only giving 10 points for this.