The best unit for measuring the width of a textbook would be

1 answer:

4 0

The best unit for measuring the width of a textbook would be centimeters.
A millimeter is a very small unit, so there would be no point in measuring width. Meters is too long. Decameters is still too long, so centimeters would be perfect.

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jamie has taken three math tests. her scores were 85, 90, and 89. to get an average of 90 what must be the sum of all her tests

Zinaida [17]

Answer:

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Step-by-step explanation:

We know that the mean of a given amount of values is the sum of the values divided by the number of values

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Therefore, Jamie needs 96 marks in her 4th test to get a mean score of 90

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Fudgin [204]

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Step-by-step explanation:

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This steps taken obtain the quotient is clearly shown in the picture attached.