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Scrat [10]
3 years ago
13

Select the correct formula to find the area of a circle

Mathematics
1 answer:
Naya [18.7K]3 years ago
6 0

Answer:

pi*r^2= Area

Step-by-step explanation:

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Find the volume of the pyramid. in.3
Papessa [141]

Answer:

1.5

Step-by-step explanation:

5 0
3 years ago
Ling drove at speed of 45 Miles per hour for 225 miles. How many hours did she drive?
oksian1 [2.3K]
225 miles / 45 miles/hr = 5hr
3 0
3 years ago
Suppose you just received a shipment of nine televisions. Three of the televisions are defective. If two televisions are randoml
Temka [501]
<h2>Answer:</h2>

a)

The probability that both televisions work is:  0.42

b)

The probability at least one of the two televisions does not​ work is:

                          0.5833

<h2>Step-by-step explanation:</h2>

There are a total of 9 televisions.

It is given that:

Three of the televisions are defective.

This means that the number of televisions which are non-defective are:

          9-3=6

a)

The probability that both televisions work is calculated by:

=\dfrac{6_C_2}{9_C_2}

( Since 6 televisions are in working conditions and out of these 6 2 are to be selected.

and the total outcome is the selection of 2 televisions from a total of 9 televisions)

Hence, we get:

=\dfrac{\dfrac{6!}{2!\times (6-2)!}}{\dfrac{9!}{2!\times (9-2)!}}\\\\\\=\dfrac{\dfrac{6!}{2!\times 4!}}{\dfrac{9!}{2!\times 7!}}\\\\\\=\dfrac{5}{12}\\\\\\=0.42

b)

The probability at least one of the two televisions does not​ work:

Is equal to the probability that one does not work+probability both do not work.

Probability one does not work is calculated by:

=\dfrac{3_C_1\times 6_C_1}{9_C_2}\\\\\\=\dfrac{\dfrac{3!}{1!\times (3-1)!}\times \dfrac{6!}{1!\times (6-1)!}}{\dfrac{9!}{2!\times (9-2)!}}\\\\\\=\dfrac{3\times 6}{36}\\\\\\=\dfrac{1}{2}\\\\\\=0.5

and the probability both do not work is:

=\dfrac{3_C_2}{9_C_2}\\\\\\=\dfrac{1}{12}\\\\\\=0.0833

Hence, Probability that atleast does not work is:

             0.5+0.0833=0.5833

4 0
3 years ago
The sum of two numbers is 53 and the difference is 11. What are the numbers ?
eimsori [14]
The numbers are 32 and 21
32 + 21 = 53
32 - 21 = 11
7 0
3 years ago
What is the equation of the line in slope -intercept form?
V125BC [204]
Slope intercept form is y=mx+b
6 0
2 years ago
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