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gayaneshka [121]
3 years ago
11

the mean height of the 30 children in a room is 76 cm james whose height is 107 cm went into the room what is the new mean of th

e height of the children in the room?​
Mathematics
1 answer:
Snezhnost [94]3 years ago
4 0

Answer:

The new mean is 77cm

Step-by-step explanation:

If the mean height of the 30 children in a room is 76 cm, then the sum of their ages is

30 \times 76 = 2280cm

If James with height 107cm joins them, then the total number of children now becomes 30+1=31 and the total height becomes: 2280cm+107cm=2387cm

The new mean now becomes:

\bar x =  \frac{2387}{31}  = 77cm

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4 0
3 years ago
Jean works as a secretary for a local business. She is paid $10.50 per hour. She
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3 years ago
What are the domain and range of this function?
Arlecino [84]

Answer:

Correct answer:  The third answer is correct

Step-by-step explanation:

The domain of each function is defined by observing the behavior of the function from left to right by following the growth of numbers on the x axis of real numbers.

In the same way, the range of each function is defined by observing the behavior of the function from the bottom y axis upwards by following the growth of numbers on the y axis of real numbers.

The given function extends from negative infinite to positive infinite on the x axis and that is the domain of this function.

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All Real Answers / Infinite Solutions

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