2 years ago

Math quick i need help hurry 15 points :)

Mathematics

1 answer:

schepotkina [342]2 years ago

4 0

Answer:

Step-by-step explanation:

I don't know how to explain it but

10/2=5 (Driver A)

20/2= 10 (Driver B)

Sorry if it's not right

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1 pump fill resovoir in 60 hrs other 80 hrs other 90 hrs when they are together how long to fill resovoir? Rsm

FromTheMoon [43]

Answer:

24.83 hours

Step-by-step explanation:

Given that :

Let time taken by pumps be :

Pump A = 60 hours

Pump B = 80 hours

Pump C = 90 hours

Recall :

Rate = 1 / time taken

The rates of the pumps are :

Pump A rate = 1 / 60

Pump B rate = 1/80

Pump C rate = 1/90

Combined rate : 1/60 + 1/80 + 1/90

Combined rate = (12 + 9 + 8) / 720 = 29/720

Combined rate = 29/720

The time taken together will be :

1 / combined rate = 1/(29/720) = 720 / 29 = 24.827 hours

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2 years ago

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lozanna [386]

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2 years ago

During bowling practice, Oscar rolled 14 strikes out of 70 attempts, What

quester [9]

Answer:

20% or 0.2

Step-by-step explanation:

u do 14÷70=0.2

to get the percent you move the decimal two places right

0.2⇒20.0⇒20%

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2 years ago

What is the product of the rational expression?? CORRECT ANSWER'S ONLY

padilas [110]

The answer is B.

Breaking down the operation:

NUmerators: x × x = x² and +3 × -3 = -9

Denumerators: x × x = x² and +2 × -2 = -4

Answer:

$\frac{x+3}{x+2}$ × $\frac{x-3}{x-2}$

Hope it helped,

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