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3 years ago

PLEASE ANSWER FOR 15 POINTS!!

1 answer:

4 0

The amount of paint required to paint the whole cupboard is:

https://tex.z-dn.net/?f=2%5Ctimes2.5%5E2%2B4%5Ctimes%282.5%5Ctimes3.5%29%0A%5C%5C%3D47.5+++ft%5E2

The amount of paint required to paint all but the bottom surface is:

https://tex.z-dn.net/?f=2.5%5E2+%2B+4%282.5%5Ctimes3.5%29%0A%5C%5C%3D+41.25+ft%5E2

So the difference in paint required is 6.25 square feet worth of paint.

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A slice is made perpendicular to the base of a right rectangular prism as shown.

Eduardwww [97]

Answer:

The correct option is 1. The area of cross section area is 48 mm².

Step-by-step explanation:

From the find it is noticed that the cross section is a rectangle with length 4 mm and width is 12 mm.

The area of a rectangle is the product of its dimensions.

$A=l\times w$

Where, l is length of the rectangle and w is width of the rectangle.

The area of cross section is

$A=4\times 12$

$A=48$

Therefore the area of cross section area is 48 mm². Option 1 is correct.

8 0

3 years ago

What is the equivalent fraction to 2/3

Paraphin [41]

Answer:4/6

Step-by-step explanation:because we multiply the fraccion by 2

8 0

3 years ago

A group of researchers are interested in the possible effects of distracting stimuli during eating, such as an increase or decre

Dmitry [639]

Using the t-distribution, it is found that since the p-value of the test is of 0.0302, which is less than the standard significance level of 0.05, the data provides convincing evidence that the average food intake is different for the patients in the treatment group.

At the null hypothesis, it is tested if the consumption is not different, that is, if the subtraction of the means is 0, hence:

$H_0: \mu_1 - \mu_2 = 0$

At the alternative hypothesis, it is tested if the consumption is different, that is, if the subtraction of the means is not 0, hence:

$H_1: \mu_1 - \mu_2 \neq 0$

Two groups of 22 patients, hence, the standard errors are:

$s_1 = \frac{45.1}{\sqrt{22}} = 9.6154$

$s_2 = \frac{26.4}{\sqrt{22}} = 5.6285$

The distribution of the differences is has:

$\overline{x} = \mu_1 - \mu_2 = 52.1 - 27.1 = 25$

$s = \sqrt{s_1^2 + s_2^2} = \sqrt{9.6154^2 + 5.6285^2} = 11.14$

The test statistic is given by:

$t = \frac{\overline{x} - \mu}{s}$

In which $\mu = 0$ is the value tested at the null hypothesis.

Hence:

$t = \frac{25 - 0}{11.14}$

$t = 2.2438$

The p-value of the test is found using a two-tailed test, as we are testing if the mean is different of a value, with t = 2.2438 and 22 + 22 - 2 = 42 df.

Using a t-distribution calculator, this p-value is of 0.0302.

Since the p-value of the test is of 0.0302, which is less than the standard significance level of 0.05, the data provides convincing evidence that the average food intake is different for the patients in the treatment group.

A similar problem is given at brainly.com/question/25600813

4 0

3 years ago

olchik [2.2K]

You can do it just believe in your self

7 0

3 years ago

Please help i dont know if my answer is right

sveta [45]

Answer:

The answer is D.117

Step-by-step explanation:

Supplementary angles equal 180°.

180-63=117

3 0

3 years ago

Read 2 more answers