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Darina [25.2K]
3 years ago
8

According to the general equation for conditional probability, if PLAN B)

Mathematics
1 answer:
Vinvika [58]3 years ago
4 0

Answer:

A.4/7

Step-by-step explanation:

P(A/B) =P(AnB) /P(B)

=1/6/7/24

=1/6×24/7

=4/7

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What is the product of 5 and four more than a number is nine times the number. What's the number?
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Answer:

The number is 5.

Step-by-step explanation:

The product of 5 and 4 more than a number = 9 times the number

Let the number be x;

5(4 + x) = 9x

20 + 5x = 9x

4x = 20

x = 20/5

x = 5.

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its C or D

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i think it's both !

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Show how to solve the following; answer must be with fractions and pi
Bess [88]

Answer:

3pi/4 and -pi/4

Step-by-step explanation:

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Recall that the meaning of arctan is to find a value that will get the value inside the parenthesis when taken the tangent of it. In other words, tan(x) = -1.

Recall that tan(x) = sin(x)/cos(x). Now recall that sin(pi/4) and cos(pi/4) are both sqrt(2)/2, meaning that tan(pi/4) is 1. To make it -1, we can either make sin(x) -1 while keeping cos(x) 1, or the other way around.

If x is -pi/4, cos(x) will still be 1, but sin(x) will be -1, so tan(-pi/4) will be -1.

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