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Llana [10]
2 years ago
13

What is the mean of 102, 124, 140, 130, 120, 110, 124, 100

Mathematics
1 answer:
Zolol [24]2 years ago
4 0

Answer:

118.75

Step-by-step explanation:

The mean is all of the numbers added up and then divided by the number of numbers. Example: 1+1+1 number of numbers: 3. 1+1+1=3. 3÷3=1. In this case, it would be 102+124+140+130+120+110+124+100=950. The number of numbers is 8, so you would go 950÷8. Then you would get an answer of 118.75. I hope I helped!

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At a recent marathon, spectators lined the street near the starting line to cheer for the runners. The crowd lined up 5 feet dee
masha68 [24]

Answer:

29568 people cheered for the runners at the start of the race

Step-by-step explanation:

From the question, the crowd lined up 5 feet deep on both sides of the street for the first mile.

This lined up crowd could be related to a rectangle that is 1 mile long and 5 feet wide.

First, Convert 1 mile to feet

1 mile = 5280 feet

Hence, the length of the rectangle is 5280 feet and the width is 5 feet.

Now, we will determine how many 5 feet by 5 feet square we can get from the 5280 feet by 5 feet rectangle. To do that, we will divide 5280 feet by 5 feet

5280 feet ÷ 5 feet = 1056

Hence, from the rectangle, we can get 1056 5 feet by 5 feet square.

From the question, you estimate that 14 people can comfortably fit in a square that measures 5 feet by 5 feet,

∴ 14 × 1056 people will comfortably fit in the crowed lined up 5 feet deep on one side of the street for the first mile.

14 × 1056 = 14784 people

This is the amount of people that will comfortably fit in the crowed lined up 5 feet deep on one side of the street for the first mile.

Since the crowd lined up on both sides of the street, then

2 × 14784 people will comfortably fit in the crowed lined up 5 feet deep on both sides of the street for the first mile

2 × 14784 = 29568 people

Hence, 29568 people cheered for the runners at the start of the race.

5 0
3 years ago
What is the area of a sector with a central angle of 8 π/11 radians and a radius of 7.2 ft? use 3.14 for π and round your final
coldgirl [10]

Answer:

59.19 ft^2

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is equal to

A=\pi r^{2}

we have

r=7.2\ ft

\pi =3.14

substitute

A=(3.14)(7.2)^{2}

A=162.78\ ft^2

step 2

we know that

The area of a circle subtends a central angle of 2π radians

so

using proportion

Find out the area of a sector with a central angle of 8 π/11 radians

\frac{162.78}{2\pi }\frac{ft^2}{rad} =\frac{x}{(8\pi/11)}\frac{ft^2}{rad} \\\\x=162.78(8/11)/2\\\\x=59.19\ ft^2

7 0
3 years ago
IN
ycow [4]

Answer:

45 pages in 1 hour

Step-by-step explanation:

Find the unit rate by dividing the number of pages by the number of hours

135/3

= 45

This means he can read 45 pages in 1 hour.

The unit rate is 45 pages in 1 hour.

8 0
2 years ago
Rose can make 5 3/4 bookmarks in one hour . How many bookmarks can she make in 3 1/2 hours
kari74 [83]

Answer:

I haven't done that type of math in a while but I cam up with 21 bookmarks

7 0
3 years ago
F(x) = –x^2+ 6<br> Find f(-3)
Lynna [10]
So if f(-3), then x = -3.


Substitute.



y = -(-3)^2 + 6

= -(9) + 6

= -3


Hope it helped
6 0
2 years ago
Read 2 more answers
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