A few days ago

lover2

what is this! PLEASE answer!?

please show me step by step.

1) negative 4 over seven divided by 16 over 14

x= -2 y= 6 z= 2 over 3

2) 6z – 9

3) -8x to the 3 power + y

4) /x/ – x +y to the second power

thank you all

Top 1 Answers

A few days ago

MsMath

Favorite Answer

1) If I have interpreted this one correctly, you have

(-4/7) / (16/14)

You can reduce 16/14 to 8/7

= (-4/7) / (8/7)

Flip the second fraction and multiply.

= (-4/7)(7/8) = -1/2

2) 6z – 9.

You are told that z = 2/3, so replace z with 2/3

6(2/3) – 9 = 12/3 – 9 = 4 – 9 = -5

3) -8x^3 + y

You are told x = -2 and y = 6, so plug those in for x and y.

= -8(-2)^3 + 6

= -8(-8) + 6

= 64 + 6 = 70

4) |x| – x + y^2

Once again plug in -2 for x and 6 for y.

|-2| – (-2) + (6)^2

= 2 + 2 + 36

= 40

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