Answer:
-29.66
Step-by-step explanation:
Given:

If you already have any two sides of a right angle then the Pythagoras theorem would help.
It goes like (Hypotenuse)² = (Side A)² + (Side B)².
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Hope this helps.
Answer:A. Identify the rate of each scenario.
Step-by-step explanation: You want to find the unit rate of the problem for example If you have 4 tickets to go to a game each ticket cost 5$ what is the rate(must divide)
Answer:
C
Step-by-step explanation:
There's a property of cyclis quadrilaterals that say that opposite sides will add up to 180
so we have

which is option c
Answer:
There is statistical evidence at 95% level to claim that students attend more than 2 classes per quarter
Step-by-step explanation:
Given that one instructor believes that students take more than 2 classes per quarter on average. Let X be the no of classes students take.

(Right tailed test at 5% significance level)

Mean difference = 
Std error = 
Test statistic t = mean diff/std error = 1.84
p value =0.039
Since p <0.05, we reject null hypothesis.
There is statistical evidence at 95% level to claim that students attend more than 2 classes per quarter