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3 years ago

Could u guys please find the area of this shape I am stuck

Mathematics

1 answer:

Alla [95]3 years ago

5 0

Answer: I believe the answer to the question is 208 the way I found this out is that I address the side up and then Then times that by eight and that’s how I got my answer I hope this helps

Step-by-step explanation:

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A lumber company is making doors that are 2058.0 millimeters tall. If the doors are too long they must be trimmed, and if the do

USPshnik [31]

Answer:

No, we don't have sufficient evidence to support the claim that the doors are either too long or too short.

Step-by-step explanation:

We are given that a lumber company is making doors that are 2058.0 millimeters tall. If the doors are too long they must be trimmed, and if the doors are too short they cannot be used.

A sample of 11 is made, and it is found that they have a mean of 2043.0 millimeters with a standard deviation of 25.0.

Let $\mu$ = population mean length of doors.

So, Null Hypothesis, $H_0$ : $\mu$ = 2058.0 millimeters {means that the mean length of doors is 2058.0 millimeters}

Alternate Hypothesis, $H_A$ : $\mu\neq$ 2058.0 millimeters {means that the doors are either too long or too short}

The test statistics that will be used here is One-sample t-test statistics because we know about the population standard deviation;

T.S. = $\frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean = 2043.0 millimeters

s = sample standard deviation = 25.0 millimeters

n = sample of doors = 11

So, the test statistics = $\frac{2043.0-2058.0}{\frac{25.0}{\sqrt{11} } }$

= -1.989

The value of t-test statistics is -1.989.

Now, at a 5% level of significance, the t table gives a critical value between -2.228 and 2.228 at 10 degrees of freedom for the two-tailed test.

Since the value of our test statistics lies within the range of critical values of t, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region.

Therefore, we conclude that the mean length of doors is 2058.0 millimeters.

7 0

3 years ago

Pls help me with my math

xxTIMURxx [149]

Answer:a

Step-by-step explanation:Bottom line includes the end point so should be less than or equal. Top line does not so should be greater than

4 0

2 years ago

Can you please help me i’ll give extra points

Sauron [17]

First, we need to solve for sin(67°) = 22/x. Multiply each side by x and divide each side by sin(67°)

x = 22/sin(67°) = 23.9

Use pythagorean theorem to find the last side.

a^2 + 22^2 = 23.9^2

a^2 + 484 = 571.21. Subtract each side by 484

a^2= 87.21. Take the square root of each side.

a = 9.3

x = 23.9 and the other side is 9.3

4 0

3 years ago

About 250 million drivers are registered in the United States. While on a trip with her family, a student counted the number of

Lilit [14]

She could estimate that there would be about 148 million female drivers.

From her data, she found there were 118 females drivers out of the total 200 drivers that she counted.

That is 118 out of 200 or 0.59 or 59%.

Now, just take 59% of 250.

0.59 x 250 = 147.5 which rounds to 148.

4 0

3 years ago

Carla is a drummer in the school band. By the end of the year, she had played in 85% of the 20 concerts the band played. How man

Margarita [4]

Answer:

Step-by-step explanation:

3 0

2 years ago