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3 years ago

What is the surface area of this design? a) 490in b) 560in c) 600in d) 440in

Mathematics

2 answers:

Sergio039 [100]3 years ago

5 0

Answer: C

Step-by-step explanation:

ikadub [295]3 years ago

4 0

Answer:

Step-by-step explanation:

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Explain the step by step of composition functions

jonny [76]

Composition functions are functions in which the input goes in and the output of the first function becomes the input for the second. You can evaluate these in two ways.

1) You can simply input the x value into the first function. After solving for it's value, you can input into the second one. The output is the composite functions answer.

2) If they only want a new function or you want to do it a different way, you have to put the first function (the whole thing) in for x in every place. You can then simplify.

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3 years ago

What number can go into 68 and 100

never [62]

I believe the answer could just be 2

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3 years ago

Hey can you please help me posted picture of question

nirvana33 [79]

(8x^2+2x+8)+(3x^3+7x+4)=
8x^2+2x+8+3x^3+7x+4
3x^3+8x^2+(2+7)x+12=
3x^3+8x^2+9x+12

Answer: Option A. 3x^3+8x^2+9x+12

8 0

3 years ago

Read 2 more answers

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

2.1.PS-8

Elza [17]

Answer:

7.29

Step-by-step explanation:

7 0

3 years ago