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vlabodo [156]
3 years ago
10

The radius of a circle is 7 centimeters

Mathematics
1 answer:
amm18123 years ago
8 0

a) So we know the formula of finding the circumference: 2*pi*R.

Assuming we make pi = 3.14:     2 * 3.14 * 7 = 43.96.

b) We also know the formula of finding the area: pi * r^2.

3.14 * 7^2. Using PEMDAS:

3.14 * 49 = 153.86

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In Terry's hometown, the probability of snow on Saturday is approximately 0.07. Which of the following
Dmitry [639]

Answer:

c

Step-by-step explanation:

Probability calculates the likelihood of an event occurring. The likelihood of the event occurring lies between 0 and 1. It is zero if the event does not occur and 1 if the event occurs.

For example, the probability that it would rain on Friday is between o and 1. If it rains, a value of one is attached to the event. If it doesn't a value of zero is attached to the event.

the probability it would snow is 0.07 or 7%. this is quite low. so, it is unlikely that it would snow

3 0
3 years ago
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Your schools talent show will feature 12 solo acts and ensemble 2 acts. The show will last 90 min. The 6 solo performers judged
kicyunya [14]
A.  12*x + 2*y = 90
       6*x + 2*y = 60

To write system of equation you just need to sum all solo and ensemble acts and make it equal to how much they will last for.

B.  Here we can multiply second equation with negative 1 and add it to first equation.
6x = 30
x = 5

now we replace x in any of 2 equations to get y.
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Solo acts are 5 minutes long and ensemble acts are 15 minutes long
3 0
3 years ago
What is the addition for -28+(-40)
Olin [163]

Answer:

-68

Step-by-step explanation:

-28 + - 40 =

2 + 4 = 6

8 + 0 = 8 making

-68

hope this helped

5 0
2 years ago
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Kira looked through online census information to determine the average number of people living in the homes in her city. What is
Pani-rosa [81]
<h3>Answer: D. Kira used published data that is quantitative.</h3>

The published data refers to the government census info being published online. She did not do an observational study because she didn't go to each household herself (rather let the census workers do that task).

The data is quantitative because she is looking at the number of people living in homes in her city. Quantitative data is simply dealing with quantities or numbers. Contrast this with qualitative data that talks about something like color choice.

6 0
3 years ago
Ray had 60 football cards last year.This year he has 200. Find the percent of change
bulgar [2K]

Answer:70%

Step-by-step explanation: no. of cards last year=60

no. of cards presently=200

increase in no. of cards=200-60

                                        =140

%change=140/200 x 100

7 0
2 years ago
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