Help with this one can’t figure it out

Mathematics

1 answer:

NeX [460]2 years ago

3 0

To solve the problem shown in the figure attached, you must apply the proccedure shown below:

1. You have that the equation for calculate the area of a circle is:

A=πr²

2. You have that the formula for calculate the diameter of a circle is:

d=2r

Therefore, the radius is r=d/2

where r is the radius of the circle

3. Keeping the information above on mind, you have the correct sequence of the equations by clearing the diameter d, is shown below:

A=π(d/2)²
A=πd²/4
4A=πd²
d²=4A/π
d√(4A/π)

Therefore, as you can see, the answer is:

A=π(d/2)²
A=πd²/4
4A=πd²
d²=4A/π
d√(4A/π)

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Cards are selected from a standard deck of 52, the results are recorded in the table. what is the empirical probability of not s

Cerrena [4.2K]

The table have the following results:

Hearts – 7

Diamonds – 4

Clubs – 8

Spades – 5

There is a total of 24

The question is asking for the probability of not selecting a heart.

So we need to add the probabilities of the diamonds, clubs, and spades since these suits are different from hearts.

So = 4 + 8 + 5 = 17