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Ierofanga [76]
3 years ago
6

Jina has scored 76, 85, and 86 on her previous three tests. What score does she need on her next test so that her average (mean)

is 77?
Mathematics
1 answer:
Scilla [17]3 years ago
3 0
Hello There!

Follow through these steps:
77 x 4 = 308
76 + 85 + 86 = 247
308 - 247 = 61.

She needs to score 61.

Hope This Helps You!
Good Luck :) 

- Hannah ❤
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What fraction is equivalent to 20 in simplest fraction form
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Answer:

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Step-by-step explanation:

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20% = 20/100

then you change it to simpliest form.

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The length of a rectangle is measured as 370mm correct to 2 significant figures.
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Suppose a city with population 500,000 has been growing at a rate of ​7% per year. If this rate​ continues, find the population
krok68 [10]

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Step-by-step explanation:

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How do you know that 21 over 30 is greater than 2 over 3
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The problem deals with fractions comparison, lets do it:
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we begin solving:
21 > (2/3)*30
21 > 2*10
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You can solve as well getting same denominator for both fractions and comparing directly, in this case we need to get 2/3 to be divided by 30:
2/3 = (10/10)(2/3) = 20/30
So we have:
</span><span>21/30 > 2/3
</span>which is equal to:
<span>21/30 > 20/30
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3 years ago
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