The distributive property states that you can "distribute" the contents of one parentheses into the other to find an answer. Let's first break down the larger number in the second parentheses: 400 + 10 + 5. Then, let's multiply all those numbers by 3. 400 x 3 = 1200. 10 x 3 = 30. 5 x 3 = 15. Then add up all the numbers and you get 1245.

Don't know how to find x given these segment lengths

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

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