Question

Use the commutative property to identify which expression is equal to (6+4)*5?
a. 5*(6+4) <----my answer
b 5*6+4*6
c 5+(6*4)
d (6+4*5)
Use the distributive property to decide which of the following is equivalent to 2(3 + 5x)? Select all that apply.



2(3) + 2(5x)


6 + 10x


2 + 8x


-6x

Which of the following is equivalent to -3(x - 7y)?



-3(x) - 7y


-3x - 21y


-3x + 21y


18xy

Answer 1

@hartnn

Answer 2

commutative property question: yep, i agree with your answer

Answer 3

ok thank you

Answer 4

distributive property question... which do u think and why?

Answer 5

i thought A and B

Answer 6

yep, 100%, perfect!

Answer 7

now just the 3rd question... which answer do u believe is correct?

Answer 8

B or C?

Answer 9

remember:
positive number x positive number = positive number (eg 2 x 3 = 6)
negative number x positive number = negative number (eg 2 x (-3) = -6)
negative number x negative number = positive number (eg (-2) x (-3) = 6)

Answer 10

so which: B or C...?

Answer 11

distribute the -3 all over (x-7y) for -3(x - 7y)

Answer 12

b

Answer 13

no for a sign reason . a negative times a negative is a positive.

Answer 14

ex. -2 x -2 = 4

Answer 15

so it would be C?

Answer 16

yes
distribute -3 all over (x-7y)
-3(x) + (-7y)(-3)
-3x+21y

Answer 17

ok thank you