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Ber [7]
3 years ago
5

How do you know that

Mathematics
1 answer:
GalinKa [24]3 years ago
8 0
How do you know what?
You might be interested in
The sector of a circle with a 12-inch radius has a central angle measure of 60°.
oksian1 [2.3K]

Answer: Area of sector in term of π is 24 in.².

Step-by-step explanation:

Since we have given that

Radius of the sector of a circle = 12 inch

Central angle = 60°

As we know the formula for "Area of sector":

Area=\frac{\theta}{360^\circ}\pi r^2\\\\Area=\frac{60}{360}\times \pi\times 12\times 12\\\\Area=24\pi\ inch^2

Hence, Area of sector in term of π is 24 in.².

8 0
3 years ago
Read 2 more answers
Find the coordinates of the points that are 5 units away from the origin and have an x-coordinate equal to 4.
vaieri [72.5K]

Answer:

(4, 3 ) and (4, - 3 )

Step-by-step explanation:

A distance of 5 units from the origin represents the hypotenuse of a right triangle with sides 3- 4 - 5

If the x-coordinate is 4 then the y-coordinate is | 3 | = ± 3

the coordinates are (4, 3 ) and (4, - 3 )


3 0
3 years ago
Seventy-six percent of sunflower seeds will germinate into a flower, and a sample of 800 such sunflower seeds is randomly select
ollegr [7]

Answer:

12.08

Step-by-step explanation:

For each sunflower, there are only two possible outcomes. Either it germinates, or it does not. The probability of a sunflower germinating is independent of other sunflowers. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Seventy-six percent of sunflower seeds will germinate into a flower

This means that p = 0.76

Samples of 800:

This means that n = 800

The standard deviation for the number of sunflower seeds that will germinate in such samples of size 800 is:

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{800*0.76*0.24} = 12.08

5 0
3 years ago
Some students are selling candy bars to raise money to purchase new gym equipment. The more candy bars they sell, the more money
Katarina [22]

Answer:

The number of candy bars they sell is the independent variable

6 0
2 years ago
Read 2 more answers
Answer help me me me me
Kobotan [32]

Answer:

409

Step-by-step explanation:

296 = 200 + 90 + 6
The value of the 9 is 90 in 296.
1/10 of 90 is 9. The only number that has a 9 in the units digit is 409.

5 0
2 years ago
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