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Lena [83]
3 years ago
12

Which of these numbers is rational? Select one:

Mathematics
2 answers:
hjlf3 years ago
8 0

Answer:

Square root of 4 because it is equal to 2, 2 is a rational number

Step-by-step explanation:

Tanya [424]3 years ago
4 0

Answer:

b

Step-by-step explanation:is the b

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Answer:

45, 36

Step-by-step explanation:

let x y minutes be the time for pipes to fill the tank, let n be the water needed to fill the tank.

x-y=9

(n/x)*20+(n/y)*20=n

n is removed by dividing the 2nd equation by n

here u get:

(1/x+1/y)*20=1

you sub x=9+y into the above equation

1/y+1/(9+y)=1/20

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then use the quadratic formula and u will find y=36 or -5

-5 is rejected because it is negative

x=36+9=45

therefore it is 36 mins and 45 mins

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As an estimation we are told 5 miles is 8 km.<br> Convert 32 km to miles.
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