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Advocard [28]
3 years ago
15

The probability that a battery will last 10 hr or more is 0.9, and the probability that it will last 15 hr or more is 0.13. give

n that a battery has lasted 10 hr, find the probability that it will last 15 hr or more. (round your answer to three decimal places.)
Mathematics
1 answer:
galben [10]3 years ago
3 0
P(B|A) = P(B)/P(A) = 0.11/0.7 = =.157
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Evalute the piecewise function for the given values of x​
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Answer:

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3 0
3 years ago
I'm new to this and I dont really understand this
agasfer [191]

Answer:

So starting off with 1a f(4)

We simply substitute x with 4 for the function

f(4)=2(4)-5

f(4)=8-5

f(4)=3

Next 1b, here it's a little different since you have to multiply the functions I think ( please correct me if I'm wrong).

gf(4), basically means functions g and f are being multiplied and their variables are being substituted with 4.

g(4)=4^2+3

g(4)=16+3

g(4)=19

and we also know from before that f(4)=3, so we'll do 19 times 3 which is 57

For the next two, I may be wrong, but I'm still going to try:

anything to the power of a negative is a fraction so for f^-1(x)=2x-5 we'll have 1/f(x)=x/2+5/2

And then for g^-1, we'll have 1/g(x)=\sqrt{x-3}  \sqrt{x-3}

Hope I helped :)

5 0
2 years ago
Which of the following points is not coplanar with polnis C, D and E?
Leokris [45]

Answer: Point R

===================================================

Explanation:

The term "coplanar" means "points that are in the same plane".

Points A, S and U are all in the base plane. Think of this as the floor of the pyramid, so to speak. These three points are with C, D, and E, which are also on the base plane or floor plane. So we can say that all of these points are coplanar.

In contrast, point R is not on the floor plane. It's higher up. So that's why R is not coplanar with points C,D,E.

7 0
3 years ago
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Karolina [17]
Multiply the cost by 1.2 (120%) to add 20% tip, and then multiply by 0.85 (85%) to take off 15%

78.96 x 1.2 x 0.85 = 80.54
7 0
3 years ago
Write the product of 7/20 and 3 as a decimal
posledela
7.8
is the answer :) because you have to turn the fraction into a decimal then multiply by 3.

7 0
3 years ago
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