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mariarad [96]
2 years ago
7

What is the simplified form of √45A) √5B) √9•5C) 3√5D)5√3​

Mathematics
1 answer:
Kaylis [27]2 years ago
4 0
The simplified form is C .

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In a survey conducted by the marketing agency 11mark, 241 of 1000 adults 19 years of age or older confessed to bringing and usin
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Answer: kindly check explanation

Step-by-step explanation:

A) The sample is a fraction of the total population used in the study.

The sample is 1000 19 years of age or older U.S adult.

The population : all U.S adults aged 19 or older.

B.) Confession about bringing cell phone to the bathroom and it is a qualitative variable

C.) point estimate (p) :

Total number of sample = 1000

Number who confessed to bring cellphone = 241

p = 241/ 1000

= 241/1000 = 0.241

D.) The point estimate was deduced from the sample information and not the population. Random selection because selection is unbiased.

E.) 95% confidence interval (CI)

95% CI = (1 - 0.95) = 0.05

For a two-tailed test : 0.05 / 2 = 0.025

Z - score = 1.96

Error : (√[p(1 - p) / n])*z

1.96 * √0.241(1-0.241)/1000

1.96* √0.000182919

1.96 * 0.0135247

= 0.0265085

Boundary :

(0.241 - 0.0265085), (0.241 + 0.0265085)

(0.2144915, 0.2675085)

F) The sample can be said to be representative of the total population since the sampling was performed and participants were chosen at random.

7 0
3 years ago
Activity 1<br>Calculate the following:<br>1. 68% of 418,​
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Answer:

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Step-by-step explanation:

by multiplying 0.68 to 418 we get 68% of 418

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3 years ago
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Slope of a parallel line with the points (7,-5) and (-5,7)
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Answer: Negative 1  The slope of parallel lines is the same.

The attachment shows two such lines, given coordinates labeled.

Step-by-step explanation:

Find the slope of the line passing through the given points.

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Run is the difference between x-values  -5 - 7  = - 12

The Slope is 12/-12   simplify:

slope = -1

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3 years ago
|x|=3 what is the answer to this equation?
AysviL [449]

If |x|=3, x can be either 3 or -3
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What is the volume of a sphere with a diameter of 9 in.?
a_sh-v [17]
Answer: 121.5 in³

Explanation:

\textnormal{Volume }=  \cfrac{4}{3}  \pi (4.5)^3 = 121.5 \pi \ in^3
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