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Vikki [24]
3 years ago
7

Do fractional solutions make sense in this cobtext? Why or why not?

Mathematics
1 answer:
Alenkinab [10]3 years ago
8 0

Answer:

yes

Step-by-step explanation:

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The TV that Ian wants to buy costs $590, but
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177

Step-by-step explanation:

very smart. big brain also duck

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3 years ago
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Which expression is equivalent to -1.3-(-1.9)
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-1.3+1.9=.6
the two minus signs turn into a plus so you add 1.9 to -1.3
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2 years ago
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A cyclist tide his a bike at a speed of 27 miles per hour. What is this speed in miles per minute? How many miles will the cycli
Alborosie

Answer:

0.45 miles per minute and 6.75

Step-by-step explanation:

27/60=0.45<-- Miles per minute

0.45x15=6.75<--Miles in 15 minutes

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2 years ago
A ball is thrown into the air from a height of 4 feet at time t = 0. The function that models this situation is h(t) = -16t2 + 6
lisov135 [29]

Answer:

  a) 49 ft

  b) 66 ft

  c) 4 seconds

  d) [0, 4] seconds

Step-by-step explanation:

a) Evaluate the function for t=3:

  h(3) = -16·3² +63·3 +4 = (-16·3 +63)·3 +4 = 15·3 +4

  h(3) = 49

The height of the ball is 49 feet after 3 seconds.

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b) The maximum height of the ball will be found where t=-b/(2a) = -63/-32 = 1.96875.

  h(1.96875) = (-16·(63/32) +63)·(63/32) +4 = 63²/64 +4 = 66.015625

The maximum height of the ball is approximately 66 feet.

__

c) The ball will hit the ground when its height is zero.

  -16t² +63t +4 = 0

Using the quadratic formula, we find the solution to be ...

   t = (-63 - √(63² -4(-16)(4)))/(2·(-16)) = (-63 -√4225)/-32 = -128/-32 = 4

The ball will hit the ground after 4 seconds.

__

d) The function is only useful for the time period between when the ball is thrown and when it lands, t = 0 to t = 4 seconds.

The domain of t in the interval 0 to 4 seconds makes sense for this function.

6 0
3 years ago
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sdas [7]

Answer:

C. 48 ♡

Step-by-step explanation:

I hope this help you :)

4 0
3 years ago
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