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3 years ago

A circle has an area of 144л cm2. Find the circumference.

Mathematics

1 answer:

Elza [17]3 years ago

8 0

24cm.........................................

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If 10% of men are bald, what is the probability that fewer than 100 in a random sample of 818 men are bald? (Answers must be in

Greeley [361]

Answer: the probability that fewer than 100 in a random sample of 818 men are bald is 0.9830

Step-by-step explanation:

Given that;

p = 10% = 0.1

so let q = 1 - p = 1 - 0.1 = 0.9

n = 818

μ = np = 818 × 0.1 = 81.8

α = √(npq) = √( 818 × 0.1 × 0.9 ) = √73.62 = 8.58

Now to find P( x < 100)

we say;

Z = (X-μ / α) = ((100-81.8) / 8.58) = 18.2 / 8.58 = 2.12

P(x<100) = P(z < 2.12)

from z-score table

P(z < 2.12) = 0.9830

Therefore the probability that fewer than 100 in a random sample of 818 men are bald is 0.9830

4 0

3 years ago

Use the rule y=-x+7to fill in the blank (1,y) is on the graph,then y=

Anon25 [30]

Y = 6 because - ( 1 ) + 7 = 6

6 0

3 years ago

Read 2 more answers

In one town 44% of all voters are Democrats if two voters are randomly selected for a survey find the probability that they are

kenny6666 [7]

Answer:

0.194

Step-by-step explanation:

Probability that BOTH are democrats means probability of <u>"one being democrat"</u> AND <u>"another also being democrat"</u>.

The AND means we need to MULTIPLY the individual probability of a person being democrat.

Probability that a voter is democrat is 44% (0.44) -- stated in the problem

Now, Probability BOTH being Democrats is simply MULTIPLYING 0.44 with 0.44

$0.44*0.44=0.1936$

Rounded to nearest thousandth, 0.194

Last answer choice is correct.

6 0

3 years ago

Answer the following..

Greeley [361]

1. 25%

2. 24.5

3. 66.666666666667%

Have a good day! :)

8 0

3 years ago

Read 2 more answers

What is the area of a circle with a radius of 5 inches?

Igoryamba

Answer:

78.54in²

Step-by-step explanation:

i used the formula

4 0

2 years ago