buggyballet buggyballet

10-08-2016
Mathematics

contestada

For the next three problems, evaluate each expression if x= -2, y=4, and z=-3
1. (4 - 2x)^-2
2. (y - z)^-3
3. (x - 5y)^0

Respuesta :

texaschic101 texaschic101

10-08-2016

exponent rule : n^-x = 1/n^x
1.) (4 - 2(-2))^ -2 = (4 + 2)^-2 = 6^-2 = 1/6^2 = 1/36

2.) (y - z) ^-3 = (4 - (-3))^-3 = (4 + 3)^-3 = 7^-3 = 1/7^3 = 1/343

3.) (-2 - 5(4)^0 = (-2-20)^0 = -22^0 = 1 (any number to the 0 power is 1)

Answer Link

Otras preguntas

Land breeze and sea breeze keep coastal climate moderate throughout the year. Which of these causes land and sea breezes to blow? cooling of sea faster than la

How does an echinoderm use its tube feet?

Last year a college admitted 32% of its applicants. If 1696 were admitted last year, how many students applied?

The dragon backbone pump was a portable deivce, used for scooping up water, that helped the Chinese improve their farming. True or False HELP!!

Which was a common restriction included in the black codes?

In the wake of the september 11th attacks A- other nations were reluctant to support the US B- the government became partisan and divided C- a struggling econo

What effect did the agricultural revolution have on farmers answers?

In a __________ study, the subjects do not know to which group they are assigned, but the researchers are aware of the subjects’ group assignments. A.double-bli

what are the difference between convergent, divergent, and transform?

In "The Revolt of 'Mother,'" the subtext regarding the conflict over the new barn is that the barn represents _____. a new start on the house that Sarah wants a