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mina [271]
3 years ago
6

Rebecca had 9/10 of a yard of ribbon. Then she gave 7/20 of a yard to a friend. How much does she have left? Explain your work

Mathematics
2 answers:
klasskru [66]3 years ago
7 0

Answer:

He or she is right

Step-by-step explanation:

lianna [129]3 years ago
4 0
<span><span><span>9/10 - 7/20=(9x20) - (7x10)= 10x20=  110/200 110 divided by 10/ 200 divided by 10= 11/20. So that brings you to your answer of 11/20. hope this helps :)






















</span></span></span>
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Serjik [45]
The first answer, using a number line, is a good answer.

I have two other ways:

Way #1:

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Way #2:

-- Get 2 friends to help you.

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Semmy [17]

Answer:

A.) The manager calculated mean and not standard deviation

B.) Standard deviation should be calculated with the use of formula.

Step-by-step explanation:

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B.) Standard deviation tells us how value obtain from group measurement deviates from the average value or expected value of each item of observations.

When standard deviation is low, this show that the value is very close to the expected value or the average value.

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umka21 [38]
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Step-by-step explanation:

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