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madam [21]
4 years ago
5

The radius of a circular car tire is 12.5 inches. Find the circumference use 3.14 for /

Mathematics
2 answers:
posledela4 years ago
7 0
12.5•2=25(diameter) 25•3.14=78.5. the answer is 78.5
Annette [7]4 years ago
5 0
We know, C = 2πr
C = 2 * 3.14 * 12.5
C = 78.5 in

In short,Your Answer would be 78.5 inches

Hope this helps!
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Step-by-step explanation:

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Trials in an experiment with a polygraph include 97 results that include 23 cases of wrong results and 74 cases of correct resul
o-na [289]

Answer:

H0:p= 0.80                 H1: p< 0.80  one tailed test

Step-by-step explanation:

We state the null and alternative hypotheses as that the results are 80 % against the claim that the results are less than 80%.

H0:p= 0.80                 H1: p< 0.80  one tailed test

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The Z∝= ±1.645 for ∝= 0.05

The test statistic used here is

Z= p1-p2/ √pq/n

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z= -0.9113

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As the calculated value  does not fall in the critical region  we fail to reject the null hypothesis. There is not sufficient evidence to support  the claim that such polygraph results are correct less than 80% of the time.

Using the normal probability table.

P (Z <  -0.9113)= 1- P(z= 0.9311) = 1- 0.8238= 0.1762

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8 0
4 years ago
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andrezito [222]

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1/3

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pic bleow

also can u help or someone

draw three cells in parallel, two light bulbs (loads) in series, with one switch.

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2 years ago
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strojnjashka [21]

<u>Given</u>:

The given inequality is 3u+3(u+1)>2u+7

We need to determine the solution of the inequality in interval notation.

<u>Solution of the inequality:</u>

The solution of the inequality can be determined by simplifying the inequality.

Thus, we have,

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