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igomit [66]
3 years ago
9

Hep me 15pts surface area of a prism.

Mathematics
1 answer:
ella [17]3 years ago
6 0

Answer:

A=360in^2

Step-by-step explanation:

there are 5 faces, 2 triangular, 3 rectangular

Triangular:

A=(9 * 10)/2=45

Since there are 2 of them the total is 90 in^2 for the triangles

Rectangular:

A=10*9=90

Since there are 3 the total is 270in^2

Total surface area is A=270+90=360in^2

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Multiple-choice questions on Advanced Placement exams have five options: A, B, C, D, and E. A random sample of the correct choic
Semenov [28]

Answer:

Option <em>B</em> is not the most common correct choice.

Step-by-step explanation:

The multiple-choice questions on Advanced Placement exams have five options: A, B, C, D, and E.

The probability that any of these five option is the correct answer is:

p=\frac{1}{5}=0.20

A random sample of 400 multiple-choice questions on Advanced Placement exam are selected.

The results showed that 90 of the 400 questions having B as the answer.

To test the hypothesis that option B is more likely the correct answer for most question, the hypothesis can be defined as:

<em>H₀</em>: All the options are equally probable, i.e. <em>p</em> = 0.20.

<em>Hₐ</em>: Option B is more likely the correct option, i.e. <em>p</em> > 0.20.

Compute the sample proportion as follows:

\hat p=\frac{90}{400}=0.225

The test statistic is:

z=\frac{\hat p-p}{\sqrt{\frac{p(1-p)}{n}}}=\frac{0.225-0.20}{\sqrt{\frac{0.20(1-0.20)}{400}}}= 1.25

The test statistic is 1.25.

Decision rule:

If the <em>p</em>-value of the test is less than the significance level then the null hypothesis will be rejected and vice-versa.

Compute the <em>p</em>-value as follows:

p-value=P(Z>1.25)\\=1-P(Z

*Use a <em>z</em>-table.

The <em>p</em>-value is 0.1057.

The <em>p</em>-value of the test is quite large. Thus, the null hypothesis was failed to rejected.

Hence, it can be concluded that option <em>B</em> is not  the most common correct choice.

7 0
2 years ago
Geometry math thanks if you help
baherus [9]

Answer: Option B.

Step-by-step explanation:

For this exercise it is important to remember that, by definition, a relation is a function if and only if each input value has an unique output value.

The input values are the values of the variable "x" and the output values are the values of the variable "y".

You can observe in the table shown in the picture, that the input value -2 has two different output values:

x=-2,y=3\\\\x=-2,y=-13

Notice that the input vale -1 has two different output values too:

x=-1,y=-1\\\\x=-1,y=-9

Therefore, based on this, you can conclude that the information given in the table is a relation but not a function.

7 0
3 years ago
Find the measure of each missing angle
podryga [215]

Answer:

ok sooo....

Step-by-step explanation:

angle 1=180-118=62

angle2=62+95=157 180-157=23

angle3=180-23=157

angle4=so i think 23

angle5=and i think 62

ya sry i dont kno i tried might be wrng sry

5 0
2 years ago
Help please thank you:) QUICKLY!!!!!!!!!
STALIN [3.7K]

Answer:

y = -8

Step-by-step explanation:

2x2 - 12

4 - 12 = -8

hope this helps

4 0
2 years ago
Read 2 more answers
What is 0.004% of 6800 round to the nearest hundredth
Elis [28]
Just remember that the word "of" means "multiply" in mathematical terms 
Now lets get started working out this problem of yours 
0.004(6800) \\ \frac{0.004}{100} = 0.00004 0.00004(6800)  \\ Actual Answer: 0.272 \\ Rounded Answer: 0.72

Also, remember: 5 and down is rounded to 0  | 6 and up is going closer to 10
7 0
3 years ago
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