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Varvara68 [4.7K]
3 years ago
14

Find the rate if a fitness instructor can do 75 pull-ups in 5 minutes

Mathematics
1 answer:
Naddik [55]3 years ago
8 0

Answer: 15 pushups a minute

Step-by-step explanation: 75 ÷ 5 = 15

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3 years ago
An airplane pilot is fertilizing a field. The height y in feet of the fertilizer t seconds after it is dropped is modeled by y(t
zheka24 [161]

Answer:

About 360.178 feet

Step-by-step explanation:

So we want the vertical distance between the fertilizer and the ground to be 0.

This going to be about the time the pilot has dropped it

So we first need to find when y is 0.

0=-16t^2-3t+300

We are going to use the quadratic formula to solve for t:

a=-16

b=-3

c=300

The quadratic formula is:

t=\frac{-b \pm \sqrt{b^2-4ac}}{2a}

t=\frac{3 \pm \sqrt{(-3)^2-4(-16)(300)}}{2(-16)}

t=\frac{3 \pm \sqrt{9+19200}}{-32}

t=\frac{3 \pm \sqrt{19209}}{-32}

t=\frac{3+\sqrt{19209}}{-32} \text{ or } \frac{3-\sqrt{19209}}{-32}

t \approx -4.424891774 \text{ or } 4.237391774

So the pilot has released it at about 4.237391774 seconds since the fertilizer has actually hit the ground at roughly this time.

So we want to know the horizontal distance at t=4.237391774:

85t

85(4.237391774)

360.1783008

360.178 feet

7 0
3 years ago
Can someone solve this problem in a sheet of paper step by step because I want to know how to do this. Please
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\bf \begin{array}{llr} \stackrel{p_n}{term}&\stackrel{3n-11}{value}\\ \cline{1-3} \\ p_1&3(1)-11\implies &-8\\ p_2&3(2)-11\implies &-5\\ p_3&3(3)-11\implies &-2\\ p_4&3(4)-11\implies &1\\ p_5&3(5)-11\implies &4\\ p_6&3(6)-11\implies &7 \end{array}

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Are the figures congruent or not ?
LUCKY_DIMON [66]
They are not congruent
4 0
4 years ago
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