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amm1812
3 years ago
8

The diameter of a circle is 7 m. Find the circumference to the nearest tenth

Mathematics
1 answer:
Molodets [167]3 years ago
3 0

Answer:

22 m

Step-by-step explanation:

Diameter d = 7 m

Circumference of the circle C =?

C = \pi d =  3.14 \times 7 \\  \\  C= 21.98 \: m\\  \\  C \approx 22.0 \: m

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There are 15 European cities that Kevin would eventually like to visit. On his next vacation, though, he only has time to visit
antoniya [11.8K]

Answer:

32760 different schedules are possible.

Step-by-step explanation:

The order is important.

For example

Prague on Monday, Berlin on Tuesday, Liverpool on Wednesday and Athens on Thursday is a different schedule than Berlin on Monday, Prague on Tuesday, Liverpool on Wednesday and Athens on Thursday.

So we use the permutations formula to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

P_{(n,x)} = \frac{n!}{(n-x)!)}

How many different schedules are possible?

Choose 4 cities among a set of 15. So

P_{(15,4)} = \frac{15!}{(15-4)!)} = 32760

32760 different schedules are possible.

6 0
3 years ago
Mark walked 1212 miles in 5 hours. How many miles did Mark walk in 1 hour?
JulijaS [17]

Answer:

Step-by-step explanation:

5 0
3 years ago
How to simplify please help
Luda [366]

Okay, the image is a little tough to see, but I believe it looks something like this:

(5² -10 / 17 - 3 * 4) -1

The first step [remember PEMDAS] is parentheses

Next comes Exponents:

(25 - 10 / 17 - 3 * 4) -1

Then Multiplication:

(25 - 10 / 17 - 12) - 1

Then Division [which we can't do yet since it isn't fully simplified], so we skip to Addition... nothing again, then subtraction.

(15 / 5) - 1

Then we can divide:

(3) - 1

Then subtract!

2

The answer to your problem is 2.

Hope that helps!

4 0
4 years ago
How do I solve part b and c
OLEGan [10]

Answer:

part a: 52%

part b: 0.4

part c: 0.24

Step-by-step explanation:

For part one, you find the frequency of the number of people that are less that 20. You add the number of tics in each bar and you divide by the total.

so for part a it is (7+6+9+4)/ (7+6+9+4+4+12+8)

for part b you add up the values that are greater than 25(less than 35)

(12+8)/total

part c you find the number of people between 25 and 30

that's 12

over total

12/total

4 0
3 years ago
X 3x -9 +30 +24 =180​
olga55 [171]

Answer:

MAMMAAAAAAA OOOooOOOoooOOO

Step-by-step explanation:

M A M M A A A A A A A    O O O o o O O O o o o O O O

5 0
3 years ago
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