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kotegsom [21]
4 years ago
8

9 more than a number is 58. write and solve an equation to determine the number (writing the equation is required)

Mathematics
1 answer:
Stels [109]4 years ago
5 0

58 - 9 = 49
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Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the proporti
hodyreva [135]

Answer:

The sample size n = 4225

Step-by-step explanation:

We will use maximum error formula = \frac{z_{a} S.D}{\sqrt{n} }

but we will find sample size "n"

\sqrt{n}  = \frac{z_{a} S.D}{maximum error}

Squaring on both sides , we get

n  = (\frac{z_{a} S.D}{maximum error})^2

Given 99% confidence interval (z value) = 2.56

given maximum error = 0.02

n  = (\frac{z_{a} p(1-p)}{maximum error})^2

n≤ (\frac{2.56X\frac{1}{2} }{0.02}) ^{2}    ( here S.D = p(1-p) ≤ 1/2

on simplification , we get n = 4225

<u>Conclusion</u>:

The sample size of two samples is  n = 4225

<u>verification</u>:-

We will use maximum error formula = \frac{z_{a} S.D}{\sqrt{n} } = \frac{2.56 1/2}{\ \sqrt{4225} }  = 0.0196

substitute all values and simplify we get maximum error is 0.02

4 0
3 years ago
1.Graph the function y=2/x . Find the range of the function given that the domain of the function is all real numbers x, except
Ivanshal [37]
The range of the function is all real number values of y except y = 0.

Ordered pairs in the graph includes (-4, -0.5), (-2, -1), (-1, -2), (1, 2)
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4 years ago
Evaluate N^2 + 2N 1 for N=5
Murljashka [212]

Answer:

35

Step-by-step explanation:

write 5 in N's place

5^2+2×5×1

25+10

35

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3 years ago
PLEASE HELP ME!!!!
tigry1 [53]
1/8x2 and 4x I had usa test prep
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3 years ago
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Can you identify what the polynomial is?
Marina CMI [18]

Answer:

are you sure its a polynomial

Step-by-step explanation:

A polynomial is a combination of terms separated by

+

or

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signs. A polynomial does not contain variables raised to negative or fractional exponents, variables in the denominator or under a radical, or any special features such as trigonometric functions, or logarithms.

Polynomial

5 0
3 years ago
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