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A transistor has a constant failure rate of \(0.005\) per ten thousand hours.

asked Aug 12, 2022 by Siyavula Wooden Status (4,147 points) | 128 views

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In a certain culture of bacteria, the number of bacteria increased tenfold in 10 hours. Assuming natural growth, how long did it take for their number to double?

asked Feb 4, 2022 by ♦GaussTheBot Diamond (45,615 points) | 348 views

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What are the Reference Library's operating hours?

asked Jan 28, 2022 by ♦MathsGee Diamond (89,175 points) | 227 views

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How many minutes are in a year?

asked Jan 17, 2022 by ♦GaussTheBot Diamond (45,615 points) | 190 views

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A bicycle is traveling at 15 miles per hour. How many feet will it cover in 20 seconds?

asked Jan 3, 2022 by ♦MathsGee Diamond (89,175 points) | 415 views

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A train is traveling 20 kilometers per hour. It is .5 kilometers behind you. You want to beat the train to a crossing that is .5 kilometers away. How fast must you run?

asked Oct 5, 2021 by Digitized Wooden Status (671 points) | 606 views

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Used normally, a 150-watt, 120 volt light bulb requires how many amps of current?

asked Oct 5, 2021 by Digitized Wooden Status (671 points) | 501 views

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A student travelled for $x$ hours at $5 \mathrm{~km} / \mathrm{hr}$ and for $\mathrm{y}$ hours at $10 \mathrm{~km} / \mathrm{hr}$.

asked Aug 15, 2021 by Siyavula Wooden Status (4,147 points) | 247 views

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What is the smallest number of boys who would have to be moved from class A to class $\mathrm{B}$, so that class B contains more boys than class A?

asked Jun 26, 2021 by Edzai Zvobwo Bronze Status (5,558 points) | 237 views

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What needs to be the speed rate for the rest of the road so that the speed rate of the whole trip would be $80 \mathrm{kph}$ if $\frac{1}{6}$ of the road is left?

asked Jun 16, 2021 by ♦MathsGee Diamond (89,175 points) | 238 views

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A train traveled 240 kilometers $(\mathrm{km})$ at a speed of 80 kilometers per hour (kph). How long did the journey take?

asked May 30, 2021 by ♦MathsGee Diamond (89,175 points) | 297 views

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How many hours and minutes are there between 12:30am and 1:20pm. Give your answer as $x$ hrs \(y\) min

asked May 19, 2021 by ♦MathsGee Diamond (89,175 points) | 310 views

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Anna started reading at 10:45am and finished at 1:15pm. How long did she take reading? Give your answer in the form $\mathrm{X}$ hours $\mathrm{X}$ minutes

asked May 19, 2021 by ♦MathsGee Diamond (89,175 points) | 290 views

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A car travels a distance $S$ on a straight road in two hours and then return to the starting point in the next 3 hours. Its average velocity is:

asked May 19, 2021 by ♦MathsGee Diamond (89,175 points) | 339 views

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How many milliseconds are there in a day?

asked May 18, 2021 by ♦MathsGee Diamond (89,175 points) | 257 views

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A farmer milks 16 cows every hour. The size of his herd varies as new calves are born and he sales off some of his stock. He never has less than 48 cows nor more than 64.

asked Apr 21, 2021 by Student Bronze Status (5,662 points) | 216 views

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How many Kilowatt- hours are used by a 250W bulb burning for 8 Hours?

asked Apr 12, 2021 by ♦MathsGee Diamond (89,175 points) | 292 views

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A plane trip (with stopovers) from South Africa to China takes 38 hours. How many days and hours does the trip take?

asked Feb 20, 2021 by ♦MathsGee Diamond (89,175 points) | 363 views

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A train journey takes 34 hours. How many days and hours does the journey take?

asked Feb 20, 2021 by ♦MathsGee Diamond (89,175 points) | 438 views

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Time calculations confuse me.

asked Dec 6, 2020 by ♦CT Silver Status (24,686 points) | 146 views

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You started running at 11:45.

asked Dec 2, 2020 by ♦CT Silver Status (24,686 points) | 160 views

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Between 12:30 and 14:30, how much time is it in:

asked Nov 24, 2020 by ♦CT Silver Status (24,686 points) | 397 views

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Liza is a university student.

asked Jun 12, 2020 by ♦CT Silver Status (24,686 points) | 108 views

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A jogger runs for 40 minutes. a) How many hours does he run for? (Give your answer as a fraction). b) How many seconds does he run for?

asked Jun 4, 2020 by Joshua Mwanza Gold Status (26,655 points) | 353 views

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Electronic banking allows customers to

asked May 28, 2020 by ♦MathsGee Diamond (89,175 points) | 169 views

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Calculate how many weeks, days and hours there are in 4 days 10 hours + 7 days 16 hours

asked Jun 9, 2019 by ♦MathsGee Diamond (89,175 points) | 942 views

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How many hours per day should someone do mathematics?

asked Mar 15, 2019 by Eddie Wooden Status (1,010 points) | 193 views

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How many hours did she spend studying in total?

asked Mar 6, 2019 by ♦MathsGee Diamond (89,175 points) | 308 views

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How many minutes is it?

asked Mar 6, 2019 by ♦MathsGee Diamond (89,175 points) | 199 views

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