I need help with all parts please

Part A: 70 feet

Part B: 2 minutes

Part C: 50 feet

Step-by-step explanation:

Part A: In order to find this answer, you need to find the y-value of the vertex of the equation. The formula for the x-value is (-b/2a). When you get the x-value, you need to put x into the origional equation to find the y-value. Once you plug in the numbers into that equation, you will get 70 feet as the answer.

Part B: To find this, you need to find the x-value of the vertex. You already have this from Part A and the answer is 2 minutes.

Part C: To find the answer to Part C, you need to find the y-intercept of the equation. The y-intercept is 50 feet because the equation already has that in it.

hope this helped :)

7

step-by-step explanation:

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: