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egoroff_w [7]
3 years ago
5

What is 6.5 x 12 equal to. Then compare ansewr to 74 feet

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
6 0

Answer:

78

Step-by-step explanation:

78-74=4

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The average and standard deviation of a measurement is 15.0 ± 5.0. if 100 students measured the value, how many would you expect
AURORKA [14]

Solution: We are given:

\mu=15, \sigma=5

Using the empirical rule, we have:

\mu \pm \sigma covers 68% of data.

Also the percentage of values below mean = Percentage of values above mean = 50%

Now, let's find the z score for x=20

z=\frac{20-15}{5}=1

Therefore, the percentage of values greater than 1 standard deviation above mean 50\% - \frac{68\%}{2} =50\%-34\%=16%

Expected number of students = 16% of 100 = 16


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3 years ago
Find the surface area.<br> 17 ft<br> 8 ft.<br> 20 ft<br> 15 ft<br><br> Need this fast
Orlov [11]

Answer:

920 square feet

Step-by-step explanation:

Top: 20 * 17 = 340

Side triangles: 8 * 15 / 2 = 60

2 side triangles: 60 * 2 = 120

Back rectangle: 8 * 20 = 160

Bottom rectangle: 15 * 20 = 300

All of them: 340 + 120 + 160 + 300 = 920

4 0
2 years ago
Help pls i need it fast
sergij07 [2.7K]
The correct answer is C. Let’s break this down with the distributive property.

5(6x+6)

30x+30

5(9-x)

45-5x

Now add and subtract like terms.
30x-5x=25x

30+45=75

Put the remaining numbers together.
25x+75 and there you go.
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3 years ago
Please help me out on this one
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it is definitely the answer B

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3 years ago
What is the value of the expression? Y=6 z=2
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