Solve the equation 7-y-y=-1

Answers

Answer 1

Answer: $7-y-y=-1\n\n7-2y=-1\ \ \ \ |subtract\ 7\ from\ both\ sides\n\n-2y=-8\ \ \ \ \ |divide\ both\ sides\ by\ (-2)\n\n\boxed{y=4}$

Answer 2

Answer: Y is equal to 4

7-4-4 = -1

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Shivani is making greeting cards, which she will sell by the box at an arts fair. She paid $20 for a booth at the fair, and the materials for each box of cards cost $5. She will sell the cards for $7 per box of cards. At some point, she will sell enough cards so that her sales cover her expenditures. How many cards will that take?
The price of apples went from $0.30 per lb to $0.90 per lb in three years. Find the rate of change of the price of apples.

Solve the following simultaneous linear equations by the elimination method. 2p - 3q = 13
p - 3q = 2

Answers

Answer:

p = 11 q = 3

Step-by-step explanation:

2p - 3q = 13

- p - 3q = 2

p = 11

p - 3q = 2

(11) - 3q = 2

-3q = -9

q = 3

Answer:

p=11 q=3

Step-by-step explanation:

subtract second from first

2p-3q=13

-p+3q=-2

p=11

plug in

11-3q=2

-3q=-9

q=3

(04.01 LC) The vertices of a quadrilateral ABCD are A(1, -3), B(4, -3), C(4, -5), and D(-1, -5). The vertices of another quadrilateral EFCD are E(1, -7), F(4, -7), C(4, -5), and D(-1, -5). Which conclusion is true about the quadrilaterals? (5 points) The shape of the quadrilaterals is same but their areas are different. The ratio of their corresponding sides is not equal. The measures of the corresponding angles are different. The angles and sides overlap when one quadrilateral is placed on the other.

Answers

The answer is D: The angles and sides overlap when one quadrilateral is placed on the other

Answer:

Taking the test rn and its D!!

Step-by-step explanation:

I will lyk if its right when i submit!!!

Vinyl wallpaper is needed to cover 4 walls of a room. Each wall measures 12 feet by 8 feet and each bolt of wallpaper covers 72 square feet. Deduct 52 square feet for windows and the door. If the wallpaper costs $13.90 per bolt, how much will the paper cost?

Answers

You would need about $68.00 dollars worth of wallpaper

A grocery store manager uses 1/2 crate of apples for every 3/4 crate if oranges in a fruit display. How many crates of oranges will she need if she uses 2 1/2 crates of apples?

Answers

Answer:

15/4

Step-by-step explanation:

This is a proportion question

It says 1/2 crates of apple are used for every 3/4 crates of oranges

For 5/2 crates of apple, x crates of oranges will be needed.

To get x, we simply multiply 1/2 by x and equate it to 3/4 multiplied by 5/2

This means: 0.5x = 0.75 × 2.5

x = ( 0.75 × 2.5 ) ÷ 0.5 = 3.75

Hence for 5/2 crates for apple, she will need 15/4 crates of oranges.

Answer:

Step-by-step explanation:

You would first make a proportion.

.5/.75 = 2.5/x

So, .5x = 1.875

x = 15/4

A flower bed is in the shape of a triangle, with a base of 15 feet and a height of 9 feet. What is the area of the flower bed?24 square feet
32.5 square feet
67.5 square feet
135 square feet

Answers

67.5 square feet

Working
A = 1/2*base*height
A = 1/2*15*9
A = 67.5 sq. feet

Answer:

67.5

Step-by-step explanation:

Help answer 1/5x-2/3y=30 when y = 15

Answers

The value of the variable x at y = 15 will be 200.

What is the solution to the equation?

The distribution of weights to the variables involved that establishes the equilibrium in the calculation is referred to as a result.

The equation is given below.

(1/5)x - (2/3)y = 30

Solve the equation for x, then we have

(1/5)x = 30 + (2/3)y

x = 150 + (10/3) y

The value of the variable x at y = 15 will be

x = 150 + (10/3) × 15

x = 150 + 50

x = 200

The value of the variable x at y = 15 will be 200.

More about the solution of the equation link is given below.

brainly.com/question/545403

#SPJ2

$\frac{1}5x-\frac{2}3y=30$

Plug in 15 for y.

$\frac{1}5x-\frac{2}3(15)=30$

2/3 of 15 is 10.

$\frac{1}5x-10=30$

Add 10 to each side.

$\frac{1}5x=40$

Divide each side by 1/5.
(dividing by a fraction is the same as multiplying by its reciprocal...flip 1/5...×5)

$\boxed{x=200}$

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