3 years ago

Please answer these Math questions

1 answer:

8 0

#1 Pi was originally as the ratio of a circle's circumference to it's diameter.
#3 Pi cannot be completely represented as a fraction, but 355/113 is pretty close.
#6 A irrational number is a number that can't be represented as a ratio/fraction
#8<span> Is because March is the third month, and 14 is the first to decimals. Month/Day: 3/14, Pi: 3.14.
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Sorry, that's all I know.

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Sam drove for 2 hours at 45 mph. He has the same distance remaining. How fast should he drive to make his average speed 60 mph?

Goshia [24]

Speed (S) = Distance (D) / time (t)

First stretch

45 = D / 2

D = 45*2

D = 90 mp

How is the same distance:

Second stretch

S = 90 / t

Average speed (AS):

AS = (S1+S2) / 2

60 = [45+(90/t)] / 2

120 = 45+90/t

120-45 = 90/t

75 = 90/t

t = 90/75

t = 1,2 h

________________________

And now:

S = 90 / t

S = 90 / 1,2

S = 75 mph

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The price of an item has been reduced by 30%. The original price was $30. What is the price of the item now ?

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Answer:

Step-by-step explanation:

30 multiply by 30 and divide by 100