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Gnoma [55]
3 years ago
12

Please explain... y=3x^2-5x+1 solve by completing the square

Mathematics
1 answer:
xeze [42]3 years ago
3 0

Answer:

x=5+√136or x=5−√136

Step-by-step explanation:

To solve this equation we have to factorize 3x2−5x+1. Since we can not use any

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The amount of chlorine in a swimming pool varies directly with the volume of water. the pool has 2.5 milligrams of chlorine per
djverab [1.8K]

Answer:

Find out the  how much chlorine is in the pool .

To prove

As given

The amount of chlorine in a swimming pool varies directly with the volume of water.

The pool has 2.5 milligrams of chlorine per liter of water.

i.e

2.5 milligrams of chorine = 1 litre of water

There are 8000 gallons of water in the swimming pool.

As 1 gallons = 3.78541 litre (Approx)

Now convert 8000 gallons of water in litres.

8000 gallons = 8000 × 3.78541 litre

                      = 30283.28 litres

Now calculate chlorine in the pool for 30283.28 litres  of waters.

As

2.5 milligrams of chlorine = 1 litre of water

2.5 × 30283.28 milligrams of chlorine = 30283.28 litre of water

75708.2 milligrams of chlorine for 30283.28 litre of water .





3 0
3 years ago
Read 2 more answers
marys age is 2 upon 3 that of peters age. two years ago marys age was 1 upon 2 of whats peters age will be in 5years time. how o
Nitella [24]

Answer:

the Peter age be 27

Step-by-step explanation:

Let assume peter be

And, then mary is 2p ÷ 3

So

The equation would be  

2p ÷ 3  - 2 = 1 ÷ 2 (p + 5)

4p - 12 = 3p + 15

p = 27

So Peter age be 27

And, the mary age is

= 2 (27) ÷ 3

= 18

Hence, the Peter age be 27

4 0
3 years ago
Grandma has 14 red roses and 7 pink roses how many more red roses than pink roses does she have
Viktor [21]
Subtract 7 from 14 to get 7.
6 0
3 years ago
Is 12.91 a rational number
Musya8 [376]

Answer:

rational

Step-by-step explanation:

5 0
3 years ago
Hello, what is 9/3 - 2? thank you
Akimi4 [234]

Answer:

1

Because 9/3= 3

And 3-2=1

Hence the answer is 1

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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