∠A and \angle B∠B are supplementary angles. If m\angle A=(7x+3)^{\circ}∠A=(7x+3) ∘ and m\angle B=(7x+23)^{\circ}∠B=(7x+23) ∘ , then find the measure of \angle A∠A.

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

The contents of 3838 cans of coke have a mean of x¯¯¯=12.15x¯=12.15. assume the contents of cans of coke have a normal distribution with standard deviation of σ=0.12.σ=0.12. find the value of the test statistic zz for the claim that the population mean is μ=12.μ=12.

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"