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3 years ago

I need to know the circumference of circle C.

Mathematics

1 answer:

Anna71 [15]3 years ago

6 0

Answer:

Step-by-step explanation:

$\theta=30^\circ=\frac{30}{180} \pi =\frac{\pi }{6}\\l=r \theta\\JK=2 \times \frac{\pi }{6} =\frac{\pi }{3} \approx 1.047circumference=2\pi r=2 \times \pi \times 2=4 \pi \approx 12.57 ~ft$

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A silo is a building shaped like a cylinder used to store grain. The diameter of a particular silo is 6.5 meters, and the height

oksian1 [2.3K]

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Step-by-step explanation:

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3 years ago

What is the equation of the line that passes through the point (-4,4) and has a<br> slope of -3

Arte-miy333 [17]

Answer: y-4=-3(x+4) or y=-3x-8

Step-by-step explanation:

To find the equation of the line with a given point and slope, we can fill them into the point-slope formula. The point-slope formula is y-y₁=m(x-x₁).

y-4=-3(x-(-4)) [multiply]

y-4=-3(x+4)

Another equation could be slope-intercept form. It is y=mx+b.

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3 years ago

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Inga [223]

3.5 because you turn the negative into the positive and add the 1.5

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3 years ago

An electric sale gives a reading equal to the true weight plus a random error that isnormally distributed with mean 0 and standa

Pepsi [2]

Answer:

a) 95% confidence interval estimate of the true weight is (3.026, 3.274)

b) 99% confidence interval estimate of the true weight is (2.944, 3.356)

Step-by-step explanation:

Confidence Interval can be calculated using M±ME where

M is the mean of five successive weightings (3.150)

ME is the margin of error from the mean

And margin of error (ME) can be calculated using the formula

ME= $\frac{t*s}{\sqrt{N} }$ where

t is the corresponding statistic in the given confidence level and degrees of freedom(t-score)

s is the standard deviation of the random error (0.1)

N is the sample size (5)

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And 99% confidence interval estimate of the true weight is:

3.150± $\frac{4.604*0.1}{\sqrt{5} }$ ≈3.150±0.206

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3 years ago

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Soloha48 [4]

Answer:

The second one because q goes with y r goes with z and s goes with x

Step-by-step explanation:

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3 years ago