I need to find the radius of a cylinder and quickly. I will give Brainliest, just please help me!

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.