3 years ago

What’s the area and the circumference of a circle with diameter 8m?

Mathematics

1 answer:

MatroZZZ [7]3 years ago

8 0

Answer:

50.24

Step-by-step explanation:

8÷2 is the radius. 3.14×4^2=50.24 m^2

^= where the exponent is supposed to go

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What values of k will make the line containing points (k,3) and (-2,1) parallel to the line through (5, K) and (1,0)

rjkz [21]

Answer:

k = -4 or 2

Step-by-step explanation:

For the lines to be parallel, the lines would need to be the same slope. This means to find the slope of each we would take the difference of the rise over the run.

$\frac{1-3}{-2-k}=\frac{-2}{-2-k}$

and

$\frac{0-k}{1-5}=\frac{-k}{-4}$

To find K, set them equal.

$\frac{-2}{-2-k} = \frac{-k}{-4}\\-k(-2-k) = -2*-4\\2k+k^2=8\\k^2+2k-8=0$

Factor the quadratic and solve for K.

$(k+4)(k-2)=0$

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Answer:

1 DVD costs 15 cents.

I million DVDs cost 150,000 dollars.

Step-by-step explanation:

If 20 DVDs ------ $3

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x = 3/20

x = 0.15

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Find the surface area of a regular prism iwth height 6 cm, if the base of the prism is: Equilateral triangle with a side of leng

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Answer:

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Step-by-step explanation:

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7) 1 is what percent of 52.6?

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Answer:

1 is what percent of 52.6? = 1.9011406844106.

Step-by-step explanation:

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3 years ago

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