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2 years ago

7y=28, do I add, subtract, divide, or multiply each side

Mathematics

2 answers:

myrzilka [38]2 years ago

5 0

Steps to solve:

7y = 28

~Divide 7 to both sides

7y/7 = 28/7

~Simplify

y = 4

Best of Luck!

Ede4ka [16]2 years ago

4 0

Answer:

You need to divide both sides by 7

Step-by-step explanation:

Step 1: You must divide both sides by 7 to get y by itself

7y = 28

7y / 7 = 28 / 7

y = 4

Answer: You need to divide both sides by 7

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liraira [26]

C=2 times j
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A rectangle has a height of 2x^4 with a width of x^2+8x+15. Express the area of the rectangle.

Amiraneli [1.4K]

Hi there!

We know that the formula for the area of a rectangle is height * width. Thus, we can multiply these two expressions together:

$2x^4\cdot (x^2+8x+15)\\$

Now, we know through the distributive property that we can distribute the $2x^4\\$ to everything in the parenthesis. Once this is done, we get:

$2x^4 \cdot x^2+2x^4\cdot8x+2x^4\cdot15$

Now, we know through the power rule that when two exponents are multiplied together with the same base, the exponent can be added together $(x^a \cdot x^b = x^{a+b})$ . This then would make our equation:

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Giving us for our final answer:

$2x^{6}+16x^{5}+30x^4\\$

Hope this helps!

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