You are given the hypotenuse and angle F, DE is the leg opposite to angle F, so use sin to solve this problem.
sinF=DE/DF
DE=DF*sinF=55*sin49=41.51
Answer: $440
Steps:
Retrace the math. Your total at the end was $22.00, before that you had a 10% tax so you multiply the tax in order to retrace that step. Next, multiply is by 2 as the 50% discount which gets you to $440
Answer: 48 cup
Step-by-step explanation:
3 * 128 * 1/8 = 48 cups