Which range of time values describes the entire interval over which she would be interpolating
1 answer:
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Answer:
a = 2
b = 4
The equation is ⇒
Step-by-step explanation:
∵ It is an exponential Regression
∴ y = where a ≠ 0
∵ x = 0 ⇒ y = 2
∴ 2 = a ⇒ 2 = a(1) (where b^0 = 1)
∴ a = 2
∵ x = 1 ⇒ y = 8
∴ 8 = 2(b)^1 ⇒ 8 = 2b ⇒ b = 8 ÷ 2 = 4
∴ b = 4
∴ The equation is ⇒
9514 1404 393
Answer:
t ≈ 0.590 s (ascent); 5.532 s (descent)
Step-by-step explanation:
We are interested in the values of t when s=16.
s = 30t -4.9t²
4.9t^2 -30t +16 = 0 . . . . . substitute 16 for s; put in standard form
The quadratic formula can be used to find the solutions:
t = (-(-30) ±√((-30)² -4(4.9)(16)))/(2(4.9))
t = (30 ±√586.4)/9.8 ≈ 0.59023, 5.53221 . . . . seconds after launch
a) It will take 0.590 seconds to reach 16 m height initially.
b) It will take 5.532 seconds to return to 16 m height on descent.
Answer:
I believe the answer is $40.30
