Find the exact value of sin 30°
sin 30°=
(Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

What are the values of each variable in the diagram below?

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