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juin [17]
3 years ago
7

A type is typically makes an error on one out of every 21 documents they complete if the typist can complete 120 documents an ho

ur how many errors does he make in three and a half hours
Mathematics
1 answer:
motikmotik3 years ago
8 0
<span>Answer: 21 document= 1 error 120 document= 1 hour in three and a half hours= 21 mistakes</span>
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3 years ago
Square root of 75 plus square root of 3
olya-2409 [2.1K]
Answer:
6√3

Explanation:
Before we begin, remember the following:
\sqrt{a*b} = \sqrt{a}  *  \sqrt{b}
m \sqrt{a} + n \sqrt{a}  = (m+n) \sqrt{a}

Now, for the given:
75 can be written as 25*3
This means that:
\sqrt{75} = \sqrt{25*3}
Applying the above concept, we can find that:
\sqrt{75} = \sqrt{25*3} = \sqrt{25}  *  \sqrt{3}
Now, we know that:
√25 = 5 (we ignored the negative value)

This means that:
√75 = 5√3

Finally, we can compute the needed sum as follows:
√75 + √3 = 5√3 + √3 = 6√3

Hope this helps :)

8 0
3 years ago
Read 2 more answers
What is the expression 9+n/3-6 when n = 12?
sergiy2304 [10]
Replace n with 12.

9 + 12 / 3 - 6

Simplify.

21 / -3 = -7

Hope this helps!
7 0
3 years ago
Read 2 more answers
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