Which expression is equivalent to 5(c + d) + 2(c + d)?

Question 5 options:

7(c + d)

7 + (c + d)

7c + d

7 + 7d

Please I will give brainliest

A) 7(c + d)

Step-by-step explanation:

5(c + d) + 2(c + d)

5c + 5d + 2c + 2d

7c + 7d

7(c + d)

A

Step-by-step explanation:

Distribute the 5

5(c + d) + 2(c + d)

5*c+5*d  +2(c + d)

5c+5d +2(c + d)

Distribute the 2

5c+5d+ 2*c+2*d

5c+5d+2c+2d

Combine like terms (combine the ds and the cs)

5c+2c +5d+2d

7c+7d

A is equivalent to this answer

7(c + d)

Distribute the 7

7*c+7*d

7c+7d

So, A is the answer

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify