Answer:
number 4 is 87 vertical angles are congruent
- 7.6 ; - 7.399 ; - 7.0699 ; - 7.06; - 1.639; - 0.6299.
A little tip to help you with negatives: The bigger the number is, the less value it has. If you still have struggles with it, try drawing a number line for a visual. The farther away a negative number is from 0, the less value it has.
Write the answers on the upper right corner
Basically degrees of freedom are related to sample size (n-1). If the df increases, it also stands that the sample size is increasing; the graph of the t-distribution will have skinnier tails, pushing the critical value towards the mean.
Area is the product of length and width. If you assume the dimensions are integers, you are looking for factors of 117 that differ by 4.
117 = 1×117 = 3×39 = 9×13
These last two factors differ by 4, so we know the dimensions of the barn are ...
... 9 ft wide by 13 ft long