What is 440 yards in to miles

Mathematics

2 answers:

Alex17521 [72]3 years ago

7 0

There is 1760 yd in a mile so to get your answer.

you would do 440 / 1760= .25

so .25 mile is your answer

NNADVOKAT [17]3 years ago

4 0

So there are 5280 ft in a mile and 3 feet =1 yard
440 yards=1320 feet
1320 ft ÷5280 ft= .25 (miles)

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Step-by-step explanation:

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a) Assuming that the child is at the top of the tower when she starts going down, we have that at the initial time (t=0) we will have the value of the height of the tower. That is z = 90-5*0 = 90 ft.

b) The child reaches the bottom as soon as z =0. We want to find the value of t that does that. Then we have 0 = 90-5t, which gives us t = 18 minutes.

c) Given the parametrization we are given, the velocity of the child at time t is given by $\frac{d\gamma}{dt}= (\frac{d}{dt}(10\cos t), \frac{d}{dt} (10 \sin t ), \frac{d}{dt}(90-5t)) = (-10 \sin t, 10 \cos t, -5)$ . The speed is defined as the norm of the velocity vector,

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