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3 years ago

Simplify (2x - 2y) (2y + 8) =?

Mathematics

2 answers:

OlgaM077 [116]3 years ago

7 0

(2x-2y)(2y+8)

We take the first number in the first section, and multiply that against each number in the second section.

2x*2y = 4xy

2x*8=16x

So the beginning part of our equation is 4xy + 16x. Now we need to do the second number in the first section the same way. Remember to bring the subtraction sign!!

-2y*2y = -4y^2

-2y*8 = -16y

We add this to the first result:

4xy + 16x -4y^2 -16y (A)

hope it helps!!

Alika [10]3 years ago

6 0

Answer:

it is 4xy-4y^2+16x-16y

Step-by-step explanation:

My method is to "square them"

2x. -2y.

2x * 2y

2x * 8

-2y*2y

-2y * 8

and add all the products together

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3 years ago

On a standardized test with a normal distribution the mean score was 67.2. The standard deviation was 4.6. What percent of the d

Reika [66]

Answer:

P ( -1 < Z < 1 ) = 68%

Step-by-step explanation:

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3 years ago

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Delvig [45]

Answer:

Step-by-step explanation:

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