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Dafna11 [192]
2 years ago
13

Lisa's test grades are 79, 89 and 90

Mathematics
2 answers:
eimsori [14]2 years ago
7 0
  • Mean=Sum of data/No of data

So

Let that be n

  • n+79+89+90/4=88
  • n+258/4=88
  • n+258=352
  • n=94
Vaselesa [24]2 years ago
6 0

Answer:

<u>94</u>

Step-by-step explanation:

Equating the mean to the scores :

  • 88 = 79 + 89 + 90 + x / 4
  • 352 = 258 + x
  • x = <u>94</u>
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Look at the pair of equivalent expressions. 36 + 8 = ?(9 + 2) What number is missing from the expression?
JulijaS [17]

Answer:

? = 4

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Step-by-step explanation:

Check out the 8 on left. It has become a 2 on the right. How did that happen?

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Before I answer, check out the 9 on the right. What did you have to multiply it by to get 36? The answer to that is 4 isn't it?

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Step2247 [10]

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liq [111]

Answer:

Step-by-step explanation:

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Answer:

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