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2 years ago

A. -25 B. 15 C. 25 D. 40 E. 65

1 answer:

5 0

Answer:

E.65

Step-by-step explanation:

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Mashcka [7]

Solution: Let x be the height of a student in Marta's class.

The mean height of 18 students in Marta's class is 60 inches

We know that:

$Mean = \frac{\sum x_{i}}{n}$

$60 = \frac{\sum x_{i}}{18}$

$60 \times 18 = \sum x_{i}$

$\sum x_{i} = 1080$

Therefore, the total measure of all 18 student's heights is 1080 inches

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