Answer:
AC = 2.96
Step-by-step explanation:
Use the trigonometric ratio cosine:
cosine = adjacent ÷ hypotenuse
cos(65°) = AC ÷ 7

Multiply both sides by 7:
7(cos(65)) = AC
(Note: Set your calculator to degrees!)
And plug 7(cos(65)) into your calculator to get:
AC ≈ 2.96
Answer:
B. 27 miles per gallon
Step-by-step explanation:
In order to solve for this, you just have to divide:

Hopefully I helped :)
Answer:
a₂₁ = 638
Step-by-step explanation:
substitute n = 21 into the explicit formula
a₂₁ = - 2 + 32(21 - 1) = - 2 + 32(20) = - 2 + 640 = 638
It is the first answer, loss of $701.80
He would have drank 22.4 litres of water in 14 days