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marissa [1.9K]
2 years ago
11

The mean weight of a group of 7 girls is 58kg work out their total weight with the calculation

Mathematics
2 answers:
dezoksy [38]2 years ago
7 0

Answer:

Easy.The answer is 406kg.

Step-by-step explanation:

58kg×7=406kg

Lemur [1.5K]2 years ago
6 0

Answer:

406kg

Mean = {Sum of Observation} ÷ {Total numbers of Observations}

here : Total numbers of Observations is 7 girls

and mean is 58kg

we can use the formula, 58= sum of observation/7

sum of observation,  total weight = 406kg

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nikklg [1K]

Answer:

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Step-by-step explanation:

1) Change the mixed fractions into improper fractions:

-3\frac{1}{5} + (-8\frac{1}{2} )\\= \frac{-16}{5} - \frac{17}{2}

2) Multiply the first fraction by 2/2 and the second fraction by 5/5 in order to create common factors on the denominator (You can do this because you are essentially multiplying by one, for example 2/2 = 1):

\frac{-16}{5} *\frac{2}{2}  - \frac{-17}{2} * \frac{5}{5} \\ =\frac{-32}{10} - \frac{85}{10}

3) Simplify the numerator(top part) while keeping the denominator(bottom part) the same:

\frac{-32}{10} -\frac{85}{10}  \\\\=\frac{-32 - 85}{10}\\ \\= \frac{-117}{10}

5 0
3 years ago
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balu736 [363]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
Evaluate u + xy, for u = 20, x = 9, and y = 8
elena-14-01-66 [18.8K]
This is how you work it out:
u + xy
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8 0
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Answer:

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2 years ago
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