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enot [183]
3 years ago
13

Write this polynomial expression in its simplest form. Show your work.

Mathematics
2 answers:
Zanzabum3 years ago
6 0

Step-by-step explanation:

(3x² + 4x - 8) - (-2x² + 4x + 2)

[3 - (-2) = 5] , [ 4 - 4 = 0] , [ (-8) - 2 = -10]

5x² + 0x - 10

(or)

5x² - 10

Licemer1 [7]3 years ago
6 0

Answer:

  • 5x² - 6

Step-by-step explanation:

<u>Simplify</u>

  • (3x² + 4x - 8) - (-2x² + 4x + 2) =
  • 3x² + 4x - 8 + 2x² - 4x - 2 =
  • (3 + 2)x² + (4 - 4)x - (8 - 2) =
  • 5x² + 0x - 6 =
  • 5x² - 6
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Pete glues a rope around his rectangular rodeo sign. His sign has side length of 2 feet and 3 feet.The rope cost $4 for each foo
andreyandreev [35.5K]

Answer:

$20 because 2x4=8 3x4=12 12+8=20

Step-by-step explanation:

8 0
3 years ago
Juan hikes up a mountain. He hikes back down at a constant rate. The table shows Juan's elevation at each hour after he begins h
Dimas [21]

The linear function that describes Juan's elevation during his descent is:

B. y = -1460x + 7500.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

In this problem, each hour, the height decays by 1460, hence the slope is of m = -1460, then:

y = -1460x + b.

The y-intercept is found considering that when x = 1, y = 6040, hence:

b = 6040 + 1460 = 7500.

Which means that option B is correct.

More can be learned about linear functions at brainly.com/question/24808124

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8 0
2 years ago
Most of the People in the middle east are Muslim and speak Arabic. Which of the following does this explain?
Alenkinab [10]

a is the answerStep-by-step explanation:

3 0
3 years ago
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A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made their visit because of a coupon
fiasKO [112]

Answer:

The 95% confidence interval for the fraction of all shoppers during the year whose visit was because of a coupon they'd received in the mail is (0.2016, 0.2694).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

A store randomly samples 603 shoppers over the course of a year and finds that 142 of them made their visit because of a coupon they'd received in the mail.

This means that n = 603, \pi = \frac{142}{603} = 0.2355

95% confidence level

So \alpha = 0.05, z is the value of Z that has a p-value of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2355 - 1.96\sqrt{\frac{0.2355*0.7645}{603}} = 0.2016

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2355 + 1.96\sqrt{\frac{0.2355*0.7645}{603}} = 0.2694

The 95% confidence interval for the fraction of all shoppers during the year whose visit was because of a coupon they'd received in the mail is (0.2016, 0.2694).

8 0
2 years ago
Geoff has d donuts. The amount of bagels he has is 3 less than 4 times the amount of donuts.
bazaltina [42]
Bagels = 4d - 3

Four times means 4d and you subtract 3 because Geoff has three less than 4 times. 

4 0
3 years ago
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