Answer: I think the answer is 50minutes
Step-by-step explanation:
750/15=50
Answer:
left ?= 110
right?= 70
Step-by-step explanation:
Answer:
i don't know lol
Step-by-step explanation:
it would be better to guess
Answer:
29°
Step-by-step explanation:
cos x = 84/98
x = cos-1(84/98)
x = 28.9
Answer:
See below ↓
Step-by-step explanation:
We need to check the different time intervals to find the max. height
- t = 0 or 1 [both give same result]
- f(1) = -16(1) + 16(1) + 12 = 12 feet
2. t = 2
- f(2) = -16(2)² + 16(2) + 12 = -20 feet
⇒ Clearly as she is diving, her maximum height will be her initial height which is <u>12 feet</u>
⇒ To achieve this, it takes her <u>0 seconds</u> [initial height = no time needed]
<u>Taking f(x) = 0 [surface of water → just touching/hit the water]</u>
- 0 = -16x² + 16x + 12
- 4x² - 4x - 3 = 0
- 4x² - 6x + 2x - 3 = 0
- 2x(2x - 3) + 1(2x - 3) = 0
- (2x + 1)(2x - 3) = 0
- x is positive
- x = 3/2 = <u>1.5 seconds</u>
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⇒ After 1 second, she is <u>12 feet</u> above the water
⇒ The diving board is <u>12 feet</u> above the water
