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My name is Ann [436]
3 years ago
11

A golf ball is hit with an initial velocity of 64 Ft/s. The function h(t) = -16t^2 + 64t models the height h (in feet) of the go

lf ball at time t (in seconds). Does the golf ball reach a height of 60 ft?
Mathematics
1 answer:
Arlecino [84]3 years ago
7 0

Answer:

  • Yes, the ball reaches the height of 64 ft

Step-by-step explanation:

<u>Given function</u>

  • h(t) = -16t^2 + 64t

<u>The maximum value is at vertex and the x-value of the vertex is:</u>

  • t = -64/2(-16) = 2

<u>Finding the maximum height the ball can reach:</u>

  • h(2) = -16(2²) + 64(2) = -64 + 128 = 64

The answer is yes

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olga nikolaevna [1]

Answer:

log3 (500)

Step-by-step explanation:

3 log3 (5) * log3(4)

We know that a log b(c) = log b(c^a)

log3 (5)^3 * log3(4)

We know that log a(b) * log a (c) = loga( b*c)

log3 ((5)^3 * 4)

log3 (125*4)

log3 (500)

8 0
3 years ago
In which of these cases is each stamp worth the most?
Alika [10]

3.15 /7 = 0.45

3.20/8 = 0.40

4.10/10 = 0.41

4.80/16 = 0.3


Answer is 1. 7 stamps worth 3.15

7 0
3 years ago
Read 2 more answers
Two equal groups of seedlings, and equal in height, were selected for an experiment. One group of seedlings was fed Fertilizer A
ser-zykov [4K]

Answer:

Null Hypothesis: H_0: \mu_A =\mu _B or \mu_A -\mu _B=0

Alternate Hypothesis: H_1: \mu_A >\mu _B or \mu_A -\mu _B>0

Here to test Fertilizer A height is greater than Fertilizer B

Two Sample T Test:

t=\frac{X_1-X_2}{\sqrt{S_p^2(1/n_1+1/n_2)}}

Where S_p^2=\frac{(n_1-1)S_1^2+(n_2-1)S_2^2}{n_1+n_2-2}

S_p^2=\frac{(14)0.25^2+(12)0.2^2}{15+13-2}= 0.0521154

t=\frac{12.92-12.63}{\sqrt{0.0521154(1/15+1/13)}}= 3.3524

P value for Test Statistic of P(3.3524,26) = 0.0012

df = n1+n2-2 = 26

Critical value of P : t_{0.025,26}=2.05553

We can conclude that Test statistic is significant. Sufficient evidence to prove that we can Reject Null hypothesis and can say Fertilizer A is greater than Fertilizer B.

6 0
3 years ago
Which expression has a positive quotient?
victus00 [196]
I believe (3) hope it’s correct :)
3 0
3 years ago
Solve the equation. 3|3k| = 27
Ratling [72]
The answer is B. -3, 3
This is why:
3|3*3| = 27
3|9| = 27
3*9 = 27
The same will happen with -3 since this | means the distance from the number to zero and in this case it is 3 units til you reach zero. So the answer is B. 3, -3

3 0
3 years ago
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