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sesenic [268]
3 years ago
5

Work out the mean for the data set below: 2.2, 2, 8.9, 4.1, 8.2

Mathematics
1 answer:
goblinko [34]3 years ago
8 0
Add all and divide by how many there is
answer is 5.08
You might be interested in
Half the sum of 4 consecutive integers is 53 what are the integers?
Sphinxa [80]

Answer:

25,26,27, and 28

Step-by-step explanation:

Write consecutive integers as x,x+1,x+2,x+3,x+4, and so forth.

x+x+1+x+2+x+3

----------------------       =   53

          2

1) Combine alike terms:

4x+6

-------   =    53

  2

2) Multiply both sides by 2:

4x+6=106

3) Subtract 6 from both sides:

4x=100

4) Divide both sides by 4:

x=25

5) Plug in 25 for x for all 4 integers:

25

26

27

28

6 0
3 years ago
Please help me, I’m<br> Dumb
vova2212 [387]

Answer: OPTION C

Step-by-step explanation:

To solve the exercise shown in the image attached, you need to subtract the functions f(x) and g(x).

Keeping the above on mind, you have:

(f-g)(x)=2x^{2}+2-(x^{2}-1)

You must distribute the negative sign and then you must add the like terms, therefore, you obtain:

(f-g)(x)=2x^{2}+2-x^{2}+1\\(f-g)(x)=x^{2} +3

4 0
3 years ago
Read 2 more answers
Which of the following best represents the average speed of a fast runner?
Tpy6a [65]
For the answer to the question above, the easiest way to determine is changing every runner's speed into the same unit.

<span>First = 10 m/s </span>

<span>Second = 10 miles/min = 16090.34 / 60 m/s (As 1 mile = 1609.34 meter and 1 min = 60 sec) </span>
<span>Second = 260.82 m/s </span>

<span>Third = 10 cm/hr = 10*(0.01)/60*60 (As 1 cm = 0.01 m and 1 hr = 60*60 sec) </span>
<span>Third = 0.000028 m/s </span>

<span>Fourth = 10 km/sec = 10*1000 m/s (As 1 km = 1000 m and time is already in sec) </span>
<span>Fourth = 10000 m/s </span>

<span>So fastest would be the one who covers the largest distance in 1 sec. It would be the fourth one.</span>
3 0
3 years ago
Read 2 more answers
Pat is required to sell candy bars to raise money for the 6th grade field trip. There is a 40% chance of him selling a candy bar
labwork [276]

Answer:

It will take him about 13 houses to sell the 5 candy bars.

Pat has an 18% chance of selling his last candy in the 11th house.

Step-by-step explanation:

Since Pat is required to sell candy bars to raise money for the 6th grade field trip, and there is a 40% chance of him selling a candy bar at each house, and he has to sell 5 candy bars in all, to determine the number of houses it takes and determine the probability he sells his last candy bar at the 11th house, the following calculations must be performed:

5 / 0.40 = X

12.5 = X

So, it will take him about 13 houses to sell the 5 candy bars.

5/11 = X

0.45 = X

0.45 x 0.4 = 0.18

Thus, Pat has an 18% chance of selling his last candy in the 11th house.

4 0
3 years ago
How do I do question 9 b?
Lynna [10]
You find the circumference of a full circle so 2πr =43.98
then divide by 4=10.995
so the answer is 10.995cm
3 0
3 years ago
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