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3 years ago

Evaluate the expression below when y = -3. 2y + 7 -4y − 10 A

1 answer:

4 0

Hello!

Judging by the question you have provided I have figured that the best way to go about finding the solution is by using the distributive property!

This means you will want to distribute the y = -3 into the 2y+7-4y-10 equation.

However, the first step you should take is to simplify the equations.
After simplifying the equations you should come out with the new equation being -2y-3.

You now want to distribute the y=-3 into the equation!
You should get -2(-3)-3. Now solve!

The answer you get should be 3!

Hope this helped!
-Blake

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The length of a rectangle is three more than twice its width the perimeter of a rectangle is 42 cm what is the length of the rec

Maurinko [17]

Answer:

The length of the rectangle is 15 cm.

Step-by-step explanation:

breadth(b)=?

length(l)= 3+2b

perimeter(P)= 42 cm

Now,

P = 2 ( l+b )

or, 42= 2 ( 3+2b+b)

or, 42 = 2 ( 3+3b)

or, $\frac{42}{2}$ = 3+3b

or, 21 = 3+3b

or, 21-3 =3b

or, 18 = 3b

or, $\frac{18}{3}$ = b

or, 6 = b

Here, Breadth(b)= 6 cm

Length (l) = 3 + 2*6

= 3 + 12

=15 cm

5 0

3 years ago

What is the equivalent fraction of 56/8

zhenek [66]

The answer is 7/1 or just 7

8 0

2 years ago

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Mariana [72]

The answer is x > -2

8 0

1 year ago

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What are all the composite numbers from 1 to 100

Anastaziya [24]

Answer:

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81,82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100.

Step-by-step explanation:

its pretty simple...

6 0

2 years ago

The width of rectangle A is the sum of twice a number and 8. The length of the rectangle is 3 times as great as the width. If th

Galina-37 [17]

Formula for perimeter of a rectangle = 2(L + W)
let the number be x
width = 2x + 8
length = 3(2x + 8)
substitute respectively
96 = 2 (2x + 8 + 3(2x + 8)) open the bracket
96 = 2 ( 2x + 8 + 6x + 24) collect like terms
96 = 2 (8x + 32) open the bracket
96 = 16x + 64
collect like terms
96 - 64 = 16x
32 = 16x
divide both sides by 16
32/16 = 16x/16
2 = x
therefore, the width = 2x + 8 = 2(2) + 8 = 4 + 8 = 12.
and the length = 3(2x + 8) = 6x + 24 = 6(2) + 24 = 12 + 24 = 36.

4 0

3 years ago