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3241004551 [841]
3 years ago
15

Please answer all questions thank you.

Mathematics
1 answer:
Ad libitum [116K]3 years ago
4 0
1) 78.5/pi = 25
radius = 5
The one 5 digits away from that coordinate is (2,-1)

2) This question is area, not perimeter. The width and length has to be added by 4 because of 2 feet on both sides.
9*10 = 90 - 30 = 60

3) 25pi according to pythagorean theorem.
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A student wants to estimate the mean score of all college students for a particular exam. First use the range rule of thumb to m
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Answer:

See explanation below

<u>Step-by-step explanation:</u>

range = 2200 - 300 = 1900

To find standard deviation, we have:

standard deviation = range/4 = \frac{1900}{4} = 475

The range rule of thumb estimate for the standard deviation is 475

Given:

Standard deviation,\sigma = 475

Margin of Error, ME = 100

\alpha = 1 - 0.90 = 0.10

Za/2 = Z0.05 = 1.64

Find sample size, n:

n ≥ [Z_\alpha_/_2 * (\frac{\sigma}{ME})]^2

n ≥ [1.64 * (\frac{475}{100})]^2

n ≥ 60.68

≈ 61

Minimun sample size,n = 61

5 0
3 years ago
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just olya [345]

Answer:

Step-by-step explanation:

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8 0
2 years ago
Read 2 more answers
If two forces of 5 lb. and 8 lb. acting at the same point are equivalent to a single force of 10 lb. Find the angle between the
Alchen [17]
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7 0
3 years ago
I need help on my math homework
xxTIMURxx [149]

Answer: the first one is True and the second one is false

Step-by-step explanation:

3 + 5x = 23

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this is equal to 23 so it is true

2x - 6 = 9

do the same you get

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7 0
3 years ago
Write 100 times 100 as multiplying 10 to a power by 10 to a power.
Bess [88]

Answer:

the answer is 10,000^10

Step-by-step explanation:

5 0
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