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2 years ago

Brainliest + High rating :)

Mathematics

1 answer:

Ratling [72]2 years ago

7 0

The answer is (x+4) (x-2) =x.x

Square (Rug A) has area x times x = x^2 (All sides of square are equal)

x is the side of Rug A

For the Rectangle (Rug B) it mentioned that it has a length of that is 4 ft greater than the length of Rug A. The expression could be written as Length = (x+4)

It also mentions that the width of Rectangle is 2 ft less than Rug A. The expression could be written as Width = (x-2)

So, if you multiply (x+4) and (x-2), will give you the area of rectangle (Rug B)

The question mentions that the area of the rectangle and square are equal, so therefore the answer is (x+4) (x-2) =x.x

Hope it helps!

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Preliminary data analyses indicate that it is reasonable to use a t-test to carry out the specified hypothesis test. Perform the

Readme [11.4K]

<h2>Answer with explanation:</h2>

By considering the given information, we have

Null hypothesis : $H_0: \mu=35.0$

Alternative hypothesis : $H_1: \mu\neq35.0$

Since the alternative hypothesis is two-tailed , so the test is a two-tailed test.

Given : Sample size : n= 20, since sample size is less than 30 so the test applied is a t-test.

$\overline{x}=41.0$ ; $\sigma= 3.7$

Test statistic : $t=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

i.e. $t=\dfrac{41.0-35.0}{\dfrac{3.7}{\sqrt{20}}}=7.252112359\approx7.25$

Degree of freedom : n-1 = 20-1=19

Significance level = 0.01

For two tailed, Significance level $=\dfrac{0.01}{2}=0.005$

By using the t-distribution table, the critical value of t = $t_{19, 0.005}=2.861$

Since , the observed t-value (7.25) is greater than the critical value (2.861) .

So we reject the null hypothesis, it means we have enough evidence to support the alternative hypothesis.

We conclude that there is some significance difference between the mean score for sober women and 35.0.

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4 years ago

ALGEBRA II // MODULE 1

natita [175]

Answer:

1. x = 3

2.x = 6

3. x = 5

I hope this helps you :D

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3 years ago

What is the percent of the blue gumballs

kramer

63/170= 37%
You can divide 63/170 and you get 0.37 as decimal form but when trying to find the percent you always multiply by 100 to get a decimal to a percent and then u found your answer

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3 years ago

Which statement is true about the function f(x)= squared root negative x?

Liono4ka [1.6K]

The answer is the first option: it has the same domain as the function f(x) = - √(-x).

The domain is the set of x-values for which the function is defined.

The square root function is defined only for zero and positve values.

- x is positive when x negative.

So the domain for - √(-x) and √(-x) are the same: x less than or equal to zero.

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3 years ago

Where does the point (0, - 3) lie?

White raven [17]

This point falls on none of your possible answers.

We can first tell that it falls neither positive or negative in terms of x since the x value is 0.

We can also tell the y term is negative. Therefore, it would fall on the negative y-axis.

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3 years ago