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Shtirlitz [24]
3 years ago
15

Please help me answer!

Mathematics
2 answers:
grin007 [14]3 years ago
8 0
40ydddddddddddddd......
Dominik [7]3 years ago
4 0

Answer:

40 yd

Step-by-step explanation:

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How many dimes equal the value of 6 quarters.show you step​
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the answer to this complicated problem is 25

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Solve for x. −6≥10−8x <br> Enter your answer as an inequality in the box.
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x≥2

Step-by-step explanation:

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Use the Distributive Property to find 1/3×6 1/2. please im suffering
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13/6 or 2 1/6

Step-by-step explanation:

6 1/2 = 13/2 (Improper Fraction)

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Step-by-step explanation:

3x^3-18x^2-24x+3x^2-6x-8

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is the required answer for your question

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7 0
3 years ago
A research firm wants to compute an interval estimate with 90% confidence for the mean time to complete an employment test. Assu
gavmur [86]

Answer:

b. 98

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this problem, we have that:

M = 0.5, \sigma = 3

M = z*\frac{\sigma}{\sqrt{n}}

0.5 = 1.645*\frac{3}{\sqrt{n}}

0.5\sqrt{n} = 4.935

\sqrt{n} = 9.87

n = 97.42

So a sample of at least 98 is required.

The correct answer is:

b. 98

5 0
3 years ago
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