a triangle has sides with lengths of 50 centimeters ,30 centimeters and 40 centimeters is it a right triangle

Is the power produced directly proportional to the wind speed, give reasons for your answer?

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

What is the answer to the question 5x+2x