The measure of an angle's supplement is 30 less than the measure of the angle. find the measure of the angle and its supplement.

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Which expression is equivalent to -5(3x - 6/7)