Answer:
We can find the critical value 
And for this case if the confidence increase the critical value increase so then this statement is True
Step-by-step explanation:
For a confidence level given c, we can find the significance level like this:

And with the degrees of freedom given by:
We can find the critical value 
And for this case if the confidence increase the critical value increase so then this statement is True
"The sum of r and 7" can be represented as r + 7
I think it is 312 divided or substract or something sorry i need poihns
Answer:
the answer is 28°
Step-by-step explanation:
opposite angles or vertical angles because the 2 lines intersect each other.
Answer:
-2, -1/2
Step-by-step explanation: