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3 years ago

15

Guys I need this ASAP I NEED the exact answer in terms of n/pi. I also need to use n/pi=22/7 and express the answer as a fractio

n in lowest terms. And I need to use the n/pie button on my calculator and express the answer to the nearest hundredth but I don’t know how to do this so PLEASE LOOK AT THE PIC and ANSWER ALL 3 parts of this so I can get full credit please I am begging you I need this ASAP!!

1 answer:

TiliK225 [7]3 years ago

3 0

Answer:

a. $C=28\pi \ cm$

b. $C=\frac{88}{1}\ cm$

c. $C=87.96 \ cm$

Step-by-step explanation:

The formula to find the circumference of a circle is:

$C=2\pi r$

Where "r" is the radius of the circle.

In this case you can identify that:

$r=14\ cm$

Then:

a. Substituting the radius of the circle into the formula, you get:

$C=2\pi (14\ cm)\\\\C=28\pi \ cm$

b. Substitute the radius into the formula (Remeber to use $\pi=\frac{22}{7}$ ) and then evaluate. So you get:

$C=2(\frac{22}{7})(14\ cm)\\\\C=\frac{616}{7}\ cm\\\\C=\frac{88}{1}\ cm$

c. Substitute the radius into the formula but this time you must use the π button in the calculator:

$C=2\pi (14\ cm)\\\\C=87.964 \ cm$

Rounded to the nearest hundreth, this is:

$C=87.96 \ cm$

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Allisa [31]

Answer:

The condition are

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The Alternative hypothesis is $H_a : \mu < 5$

The check revealed that

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Step-by-step explanation:

From the question we are told that

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The Alternative hypothesis is $H_a : \mu < 5$

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Generally the test statistics is mathematically evaluated as

$t = \frac{\= x - \mu}{ \frac{\sigma }{\sqrt{n} } }$

substituting values

$t = \frac{ 4.6 - 5}{ \frac{2.2}{\sqrt{20} } }$

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Looking at the value of t and $Z_{\alpha }$ we see that $t < Z_{\alpha }$ so we fail to reject the null hypothesis

This implies that there is sufficient evidence to support the claim that in a small city renowned for its music school, the average child takes at least 5 years of piano lessons.

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2 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

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Answer:

$\boxed {\boxed {\sf C. \ 200 \pi \ ft^3}}$

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We know the height of the cylinder is 8 feet. We are given the diameter, the distance from edge to edge through the center. We want to find the radius, the distance from the edge to the center.

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3 years ago

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Answer:

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Step 1: Simplify both sides of the equation.

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x+5+x+−5=56

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2x=56

2x=56

Step 2: Divide both sides by 2.

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