4 years ago

Anybody know the answers to these ?

Mathematics

1 answer:

Vinvika [58]4 years ago

8 0

Nope sorry maybe trying looking it up on youtube? There might be a video on it explaining how to do it.

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How could we find the diameter of a circle with an area of 78.5 in.^ 2 ?? (3.14 is used for )

iris [78.8K]

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I think it's A AND C. The diameter is just the radius multiplied by 2 at the end of the day.B is just wrong.

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3 years ago

I am having trouble solving for Y. I solved for X in the second equation, but I cannot seem to figure it out by substituting for

kumpel [21]

X - 2y = -10 --> x = 2y -10

3x + 5y = 25 --> 3(2y-10) + 5y = 25 --> 11y - 30 = 25 --> 11y = 55 --> y = 5

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Answer (0,5)

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3 years ago

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nadya68 [22]

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3 years ago

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Doss [256]

$C(5,4)(.40)^4(1-.40)^1=5(.4)^4(.6)^1=0.0768$

That's 7.68% = 7.7% (rounded)

Note: C(5, 4) is the number of combinations of 5 things taken 4 at a time. You may have seen this written as $_5C_4$

In general, $C(n,r)=\frac{n!}{r!(n-r)!}$

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3 years ago

20x3/5=<br> A. 15<br> B. 14<br> C. 13<br> D. 12

MrRa [10]

20 x 3/5

60/5 = 12

D. 12

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4 years ago