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Natali [406]
3 years ago
12

A running track has a diameter 100 m. find the area of the running track in square meters.

Mathematics
2 answers:
Alex3 years ago
8 0

Answer:

the area is about 314.2 square meters

Step-by-step explanation

a= πr²

A=π10²

a≈ 314.2

Vesnalui [34]3 years ago
3 0

Answer: 7850 square meters.

Step-by-step explanation: A= pi times radius squared. to find the radius of the circle, divide the diameter by 2.

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how would you change the sentence into a true statement? some irrational numbers are also rational numbers..... A. All irrationa
Fynjy0 [20]

Irrational numbers cannot be classified as rational numbers. - EXPLANATION - both are different completely, according to as I think, and thus they cannot be inter-related. Irrational like - root2, root3, and all those that cannot be further solved completely. Their decimal representation is neither recurring nor ending e.g. 1.101001000100001000001.... and so on while rational number are consisting of whole numbers, integers, natural numbers, and all the constants and their decimal representation can be non ending but recurring.

5. d. Irrational numbers cannot be classified as rational numbers. - EXPLANATION - out of the options this one's correct. As I above said, all numbers as far as I know can be categorized into unreal and real numbers out of which real numbers consist of irrational and rational numbers while unreal numbers, I don't know as I have not been taught about them yet and neither do you have been, as I think so. All I know is that, as far as I have been taught, unreal number are not connected to real numbers.

6. Every real number is a rational number. - EXPLANATION - As I told you above, real numbers can also be irrational so this is false.

Hope this helps!

8 0
3 years ago
Read 2 more answers
n studying the sampling distribution of the mean, you were asked to list all the different possible samples from a small populat
Mashutka [201]

The Total outcome with replacement will be given by ,3² = 9, the mean of the samples will be  2 , 4.5 , 3 , 7 , 4

<h3>What is Mean ?</h3>

Mean predicts the central tendency of a data set , It is determined by the ratio of sum of all the numbers to the total numbers in the data set.

On the basis of given data

The number given is 2,4,7

Size of the sample = 2 with replacement

The Total outcome with replacement will be given by

3² = 9

Possible outcome can be

2,2   2,4   2,7   4,4  4,2  4,7  7,7  7,2  7,4

The sample mean can be calculated as

(a+b)/2

(2+2)/2 = 2

similarly the mean of the samples will be  2 , 4.5 , 3 , 7 , 4

To know more about Mean

brainly.com/question/521501

#SPJ1

8 0
2 years ago
The Texas rangers team manager receives a delivery of 4 boxes of baseballs each box contains 50 basesballs the texas rangers tea
vekshin1

Answer:

B

Step-by-step explanation:

For each box, there is 1 defective lightbulb. Therefore, a delivery of 4 boxes will have 4 defective lightbulbs. A delivery of 2 boxes has 2 defective lightbulbs. 4 defective lightbulbs subtracted by 2 defective lightbulbs equals 2 more defective lightbulbs in 4 boxes than 2. Therefore, it is B.

3 0
3 years ago
Read 2 more answers
A bi-monthly sports magazine has 48,000 subscribers when it charges $20 for a one year subscription. For every $1 increase in th
cestrela7 [59]

Answer:

To maximize the profits of the company, the subscription price should be raised to $ 22.

Step-by-step explanation:

Given that a bi-monthly sports magazine has 48,000 subscribers when it charges $ 20 for a one year subscription, and for every $ 1 increase in the yearly subscription price, the magazine assumes that it will lose 2,000 subscribers resulting in the equation below, to determine, Using the equation below, how much should the magazine sell for in order to maximize revenues, the following calculations should be performed:

f (x) = (48,000 - 2,000x) (20 + x)

X = 48,000 x 20 = 960,000

X = (48,000 - 2,000x1) x (20 + 1)

X = 46,000 x 21

X = 966,000

X = (48,000 - 2,000x2) x (20 + 2)

X = 44,000 x 22

X = 968,000

X = (48,000 - 2,000x4) x (20 + 4)

X = 40,000 x 24

X = 960,000

Therefore, to maximize the profits of the company, the subscription price should be raised to $ 22.

8 0
3 years ago
Over what interval is the function in this graph decreasing?
zysi [14]

Hi there.

The answer is A choice.

Explanation:

The function decreases when x > 0 and y < 0. Rather say that when x-term keeps increasing, the y-value will decrease which is a decreasing function.

By looking at the graph. We can find the decreasing graph by looking which region does the graph head down when x increases.

And that is when - 3 <= x <= 2 as the graph starts decreasing.

4 0
3 years ago
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