3 years ago

I took a picture of the problem.

Mathematics

1 answer:

Olegator [25]3 years ago

6 0

Answer:

- 28

Step-by-step explanation:

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What is the value of x

barxatty [35]

X = 15

X + 90 = 7x

X = 7x - 90

X - 7x = -90

-6x = 90

Divide both sides by -6

X = 15

3 0

3 years ago

Thirty-three college freshmen were randomly selected for an on-campus survey at their university. The participants' mean GPA was

Ivan

Answer: $\pm0.1706$

Step-by-step explanation:

Given : Sample size : n= 33

Critical value for significance level of $\alpha:0.05$ : $z_{\alpha/2}= 1.96$

Sample mean : $\overline{x}=2.5$

Standard deviation : $\sigma= 0.5$

We assume that this is a normal distribution.

Margin of error : $E=\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

i.e. $E=\pm (1.96)\dfrac{0.5}{\sqrt{33}}=\pm0.170596102837\approx\pm0.1706$

Hence, the margin of error is $\pm0.1706$

7 0

3 years ago

Name the subset of the real number to which each number belongs 1. square root of 11 2. -7

Ganezh [65]

1 and 2 are natural numbers
-7 belongs to set of integers
sqrt 11 is a member of the set of irrational numbers

6 0

3 years ago

The final cost of a sale item is determined by multiplying the price on the tag by 75%.which best describes the function that re

AnnZ [28]

Answer:

4V = 3U

Step-by-step explanation:

The final cost of a sale item is determined by multiplying the price on the tag by 75%.

Let us assume that the final cost of the sale item is V and the price on the tag is given by U.

Then the equation that best describes the function that represents the situation is $V = \frac{75U}{100} =\frac{3U}{4}$

⇒ 4V = 3U (Answer)

3 0

3 years ago

Determine the intercepts of the line x-intercept (__,__) y-intercept (__,__)

Lesechka [4]

x-intercept (-40,0)

y-intercept (0,15)

6 0

3 years ago

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I took a picture of the problem.​

I took a picture of the problem.