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AlexFokin [52]
3 years ago
12

What is the product of 84,90?

Mathematics
1 answer:
MAVERICK [17]3 years ago
3 0
84•90 is 7,560.

ndheisn
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Two pipes running together can fill a tank in 20 minutes.
Hunter-Best [27]

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

((9+y)+(y))*20=(9+y)(y)

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y2-31y-180=0

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

-5 is rejected because it is negative

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therefore it is 36 mins and 45 mins

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3 years ago
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Answer:

25

Step-by-step explanation:

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4 0
3 years ago
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Please help! I do not understand.
Likurg_2 [28]
Because GH bisects FGI, FGH=HGI
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Which of the tables represents a function? (5 points)
AlladinOne [14]

Answer:

It's table D

Step-by-step explanation:

I just took the test.

3 0
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How can $54,000 be invested part at 8% annual simple Interest and the remainder at 10% annual simple interest so that the intere
Nastasia [14]

Answer:

0.08x = $5400-0.1x Add 0.1x to both sides of the equation.

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$3,000 is invested at 8%

$2,400 is invested at 10%

Step-by-step explanation:

3 0
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