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Phoenix [80]
3 years ago
14

The mean of seven numbers is 12.0. When one new number is added , the average of eight numbers becomes 12.5 . What is the new nu

mber?
Mathematics
2 answers:
Gnesinka [82]3 years ago
8 0
(12 * 7 + n)8=12.5
(12 * 7 + n)= 100
N= 16. The new number will be 16. Hope this helps. :)
Varvara68 [4.7K]3 years ago
6 0
I agree that the answer is 16. Just plugging the number into a equation equaled to 100
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I dont the know the answer to c-d=b for c
Vinvika [58]
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c=b+d

hope helped 
4 0
3 years ago
Find the area of the irregular figure.
max2010maxim [7]
Your answer should be 314


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5 0
3 years ago
Round the decimals to whole numbers to estimate first, then
nika2105 [10]
Pretty sure the answer would be 16.
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3 0
3 years ago
PLEASE PLEASE PLEASE HELP ME YALL‼️‼️‼️‼️‼️
Inessa [10]

Answer:

Hi .. im happy to help

answer is 0.033

Step-by-step explanation:

P = C(4,4)÷C(10,4)

P = 1 ÷ 30

p =  \frac{1 }{30}

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3 0
2 years ago
A school bus has 25 seats, with 5 rows of 5 seats. 15 students from the first grade and 5 students from the second grade travel
kow [346]

Answer:

5P5×20P15

Step-by-step explanation:

A school bus has 25 seats, with 5 rows of 5 seats.

15 students from the first grade and 5 students from the second grade travel in the bus.

second-grade students occupy the first row.

The 5 students of second grade are to be seated in 5 seats,this can be done in:

5P5 ways where P is the permutation

Now 15 students from first grade are to be arranged in remaining 20 seats

This can be done in:

20P15 ways

Hence, total ways student can be seated is:

5P5×20P15

6 0
3 years ago
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