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Lubov Fominskaja [6]
3 years ago
11

(7,0), endpoint (3,-4)

Mathematics
1 answer:
mafiozo [28]3 years ago
3 0

Answer:

11,4 is the answers for the question

Step-by-step explanation:

please give me brainlest and follow me

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Find the sample size required to achieve the given margin of error with SD = 51.02 and z - score = 1.96. Round your answer to th
coldgirl [10]

Answer:

The sample size required is 2500.

Step-by-step explanation:

z-score:

In function of the margin of error M, the z-score is given by:

Z = \frac{M}{\frac{\sigma}{\sqrt{n}}} = \frac{M\sqrt{n}}{\sigma}

In this question, we have that:

\sigma = 51.02, M = 2, Z = 1.96

So

Z = \frac{M\sqrt{n}}{\sigma}

1.96 = \frac{2\sqrt{n}}{51.02}

2\sqrt{n} = 51.02*1.96

\sqrt{n} = \frac{51.02*1.96}{2}

(\sqrt{n})^2 = (\frac{51.02*1.96}{2})^2

n = 2500

The sample size required is 2500.

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3 years ago
Y=5x+2 and 3x=-y+10 what is the soluion of equation
Harlamova29_29 [7]
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4 0
3 years ago
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A. a scientist is studying the change in population for two species of fish in a lake. The table shows how the numbers of each s
Rom4ik [11]

Answer:

The data can be modeled using linear equatins, because there's the same amount of population for fish A (+20 per year) and fish B (+30 per year) every year.

5 0
2 years ago
If d = 20 and C = 20π
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What is this question
7 0
3 years ago
Use a proportion if two cassettes cost $14.50 How much will 15 cost
aev [14]
Cost/(number of cassettes) = $14.50/2 = x/15

Multiply by 15 to solve
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15 cassettes will cost $108.75.
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3 years ago
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