3 years ago

What's greater? -8 or -1/20

1 answer:

5 0

You can say : -1/20 = -0.05 so -8<-0.05 so -1/20 is greater because its negative :))
i hope this is helpful
have a nice day

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a boat takes 8 hours to go 6 miles upstream and come back to the starting point. if the speed of the boat is 4 miles per hour in

Romashka-Z-Leto [24]

Consider this option:
1. if to re-write the condition, it is given: total time t=8 hours; upstream=downstream=6 miles; V_boat=4 m/h., V_current=V=?
2. note, that total time=time_upstream+time_downstream, where time_upstream=6miles/(V_boat-V) and time_downstream=6miles/(V_boat+V). Using this it is possible to make up and solve the following equation:
$\frac{6}{4+V} + \frac{6}{4-V} =8; \ =\ \textgreater \ \ \frac{V^2-10}{16-V^2}=0; \ =\ \textgreater \ \ V=\sqrt{10} \ \frac{miles}{hour}$

answer: √10

P.S. the roots of the equation are √10 and (-√10), only positive values is needed for V.

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3 years ago

770,070 in expanded form

Shalnov [3]

700,000 + 70,000 + 70

is your answer

hope this helps :D

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3 years ago

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A stack of 200 pennies is 1.325 inches tall. Mario guesses that each penny is 0.013 inches thick. Explain how you know Mario’s a

pishuonlain [190]

Answer:

200 divided by 1.325 = 0.006625 thats how big each penny is hope this helped! :)