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3 years ago

Chapter 8 question 18 please help

Mathematics

1 answer:

MA_775_DIABLO [31]3 years ago

4 0

4744 feet. work below. please mark brainliest.

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According to the graph, how far did the object move between the second and third seconds?

Setler79 [48]

Answer:

Your answer would be B

Step-by-step explanation:

This is because in between the 2nd and 3rd seconds, there is a 2 unit space so that is how far the object moved in between these seconds,

Hope this helps you out!! Have a good day:))

7 0

2 years ago

Using the graph below, describe the acceleration, position, and force at each of the

STALIN [3.7K]

Answer:

Step-by-step explanation:

(1). 2 m / s²

(2). 0 m / s² { Change from the previous section is - 2 m / s² }

(3). - 8 m / s² { Change from the previous section is - 8 m / s² }

(4). - 1 m / s² { Change from the previous section is + 7 m / s² }

(5). 0 m / s² { Change from the previous section is + 1 m / s² }

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1 year ago

A store purchased a sweater for $40 and then marks the price up 75% before selling it. What is the price of the sweater in store

Maslowich

Hey You!

40 * 75% = 30

40 + 30 = 70

The price is $70.

7 0

2 years ago

If a light bulb manufacturing company wants to estimate, with 99% confidence, the mean life of compact fluorescent light bulb

Reptile [31]

Answer:

We need at least 217 compact fluorescent light bulbs

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.99}{2} = 0.005$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How many compact fluorescent light bulbs need to be selected?

We need at least n bulbs, in which n is found when $M = 175, \sigma = 1000$

$M = z*\frac{\sigma}{\sqrt{n}}$

$175 = 2.575*\frac{1000}{\sqrt{n}}$

$175\sqrt{n} = 2575$

$\sqrt{n} = \frac{2575}{175}$

$\sqrt{n} = 14.71$

$\sqrt{n}^{2} = (14.71)^{2}$

$n = 216.5$

We need at least 217 compact fluorescent light bulbs

4 0

2 years ago

Read 2 more answers

Are these functions?

likoan [24]

Answer:

Relation 1: No

Relation 2: Yes

Step-by-step explanation: Domain cannot repeat(have more than one output)

6 0

2 years ago