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2 years ago

A robot and complete 8 tasks in 3/4

Mathematics

1 answer:

White raven [17]2 years ago

5 0

Answer:

5/6hour=5/6×60=300/6=50

8tasks in 50minutes

1task=50/8=61/4minutes

A)robot completes task in 61/4minutes

B)#tasks per hour

#of tasks×time tasks to do task<or=60

no×6.25=60

6-25n=60

n=60/6.25=96

A robot can complete a tasks in one hour

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What is 0.42857142857 as a fraction?

To write 0.42857142857 as a fraction you have to write 0.42857142857 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.

0.42857142857 = 0.42857142857/1 = 4.2857142857/10 = 42.857142857/100 = 428.57142857/1000 = 4285.7142857/10000 = 42857.142857/100000 = 428571.42857/1000000 = 4285714.2857/10000000 = 42857142.857/100000000 = 428571428.57/1000000000 = 4285714285.7/10000000000 = 42857142857/100000000000

And finally we have:

0.42857142857 as a fraction equals 42857142857/100000000000

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1. b=4, then $\sqrt{a+ \sqrt{b} }=\sqrt{a+2}$ . Here a=2,7 (in other cases $\sqrt{a+2}$ is not integer). When a=2, $\sqrt{a+2}=\sqrt{2+2}=2$ and when a=7, $\sqrt{a+2}=\sqrt{7+2}=3$ .

2. b=9, then a=6 and $\sqrt{a+ \sqrt{b} }= \sqrt{a+3}=\sqrt{6+3}=3$ .

3. b=16, then a=5 and $\sqrt{a+ \sqrt{b} }= \sqrt{a+4}=\sqrt{5+4}=3$ .

4. b=25, then a=4 and $\sqrt{a+ \sqrt{b} }=\sqrt{a+5}=\sqrt{4+5}=3$ .

Answer: (2,4), (7,4), (6,9), (5,16), (4,25).

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