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3 years ago

Which exoression has three terms when simplified

Mathematics

1 answer:

morpeh [17]3 years ago

7 0

Answer:

Step-by-step explanation:

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Answer and solve for brainlist

BartSMP [9]

Answer:

y=10x+57

Step-by-step explanation:

30pieces of candy/3 minutes=10 pieces of candy/minute (slope)

He has already eaten 57 pieces at x=0 minutes so this must be the Y-Intercept

Slope intercept form is y=mx+b

m: Slope (10)

b: y-intercept (57)

4 0

2 years ago

The data given to the right includes data from candies, and of them are red. The company that makes the candy claims that % of

Dafna1 [17]

Using the z-distribution, the 95% confidence interval for the percentage of red candies is of (7.84%, 33.18%). Since 33% is part of the interval, there is not enough evidence to conclude that the claim is wrong.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

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

In which:

$\pi$ is the sample proportion.

z is the critical value.

n is the sample size.

In this problem, we have a 95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so the critical value is z = 1.96.

Researching this problem on the internet, 8 out of 39 candies are red, hence the sample size and the estimate are given by:

$n = 39, \pi = \frac{8}{39} = 0.2051$

Hence the bounds of the interval are:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2051 - 1.96\sqrt{\frac{0.2051(0.7949)}{39}} = 0.0784$

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2051 + 1.96\sqrt{\frac{0.2051(0.7949)}{39}} = 0.3318$

As a percentage, the 95% confidence interval for the percentage of red candies is of (7.84%, 33.18%). Since 33% is part of the interval, there is not enough evidence to conclude that the claim is wrong.

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

7 0

2 years ago

hat are the solutions to the equation |x| = 2? Choose all answers that are correct. A. B. C. D.

zalisa [80]

Easy, so absolute value makes anything inside into positive
|x|=2
therefor x=-2 or x=2 since it would be made posotive

answer is -2 and 2

6 0

3 years ago

Read 2 more answers

Find the hypotenuse (c) of the right triangle.

Aleksandr-060686 [28]