8x - 3/x
x = 1/2
(8 • 1/2) - 3/0.5
4 - 1.5
2.5
1) 12 cookies per hour
2) train travels 80 miles per hour
Use the 30-60-90 triangle.
Tan is opposite over adjacent.

Square roots cannot be on the bottom.

The bottom cancel out the square root bar.
Your answer is:

(It's best to memorize the 30-60-90 and the 45-45-90 triangles during trigonometry. It helps a lot.)
Hope this helps!
:)
Answer:
m< CDF = 36
Step-by-step explanation:
m< CDE =m< CDF + m< FDE
120 = m< CDF + 84
m< CDF = 120 - 84
m< CDF = 36
I hope I helped you^_^
Answer:
$6.30 for a tip
Step-by-step explanation:
%48.30 as a total