{} which expression is equivalent to (a8)^4? 1)a^2 2)a^4 3) a^12 4)a^32

What is the measure of angle afe? 79 81 91 99

The reflexive property of congruence lets you say that ∠pqr ≅

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables