3 years ago

I need help ASAP 7 and 2/5 + 2 and 1/2

1 answer:

8 0

7 2/5 + 2 1/2 = 9 9/10

You'd just times the denominators to a common number which would be 10 and the the numerator would be added together as 6 and 3. Then you end up with 9 9/10 as a mixed number

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Quality control finds on average that 0.026% of the items from a certain factory are detective. One month, 4000 items are checke

telo118 [61]

Given that 4000 items are checked in one month, let the number of detective items be represented as y.

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When 4000 items are checked, we have the number of detective items to be evaluated as

$\begin{gathered} \text{Number of }\det ective\text{ items = }\frac{\text{0.026}}{100}\times\text{Total number of items checked} \\ y=\frac{0.026}{100}\times4000 \\ \Rightarrow y=1.04 \end{gathered}$

Hence, the number of detective items is 1.04.

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Step-by-step explanation:

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