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Vladimir79 [104]
2 years ago
13

If f(x)=4x−7 what is f(−5)? 1. 13 2. -27 3. -13 4. 27

Mathematics
1 answer:
Xelga [282]2 years ago
3 0

Answer:

option 2

Step-by-step explanation:

Substitute x = - 5 into f(x) , that is

f(- 5) = 4(- 5) - 7 = - 20 - 7 = - 27

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Answer:

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Explanation:

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3 years ago
If an object is dropped from a height of 144 feet, the function h(t)=-16t^2+144 gives the height of the object after t seconds.
shtirl [24]

Answer:

A. 3s

Step-by-step explanation:

The height of the object after t seconds is given by:

h(t) = -16t^2 + 144

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It hits the ground after t seconds, and t is found when h(t) = 0. So

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t^2 = \frac{144}{16}

t^2 = 9

t = \sqrt{9}

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5 0
2 years ago
-. Six square-based pyramids fit exactly onto the six faces of a
igor_vitrenko [27]

Answer:

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Step-by-step explanation:

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3 years ago
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If p = .8 and n = 50, then we can conclude that the sampling distribution of pˆ is approximately a normal distribution
FrozenT [24]

Answer:

Yes we can conclude.

Step-by-step explanation:

The sampling distribution of \hat{p} can be approximated as a Normal Distribution only if:

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Both of these conditions must be met in order to approximate the sampling distribution of \hat{p} as Normal Distribution.

From the given data:

n = 50

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This  means the conditions that np and nq must be equal to or greater than 10 is being satisfied. So, we can conclude that the sampling distribution of pˆ is approximately a normal distribution

6 0
3 years ago
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