3 years ago

A/ How many hours does it take to fill the pool?

Mathematics

1 answer:

masya89 [10]3 years ago

5 0

Sorry my bad, i m not good in maths.

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5*10^9 divided by 5*10^4

tiny-mole [99]

The answer is 1e + 13 i think

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3 years ago

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Factor completely<br> -2x^4+6x^3+8x^2

vlada-n [284]

Answer:

-2x²(x + 1)(x - 4)

Step-by-step explanation:

Hello!

Factor:

$-2x^4 + 6x^3 + 8x^2$
$-2x^2(x^2 - 3x - 4)$ Take out GCF

Think: What numbers add up to -3 and multiply to -4?

Answer: -4 and 1

Continue:

$-2x^2(x^2 - 3x - 4)$
$-2x^2(x^2 - 4x + x - 4)$
$-2x^2(x(x - 4) + 1(x - 4))$ Factor by Grouping
$-2x^2(x + 1)(x - 4)$

The complete factored form is -2x²(x + 1)(x - 4)

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2 years ago

What is the per capita cost of a $2.6 million recreation center in a city with 110945 people?

kvasek [131]

Answer: $23 per person

2,600,000/110,945 = 23.43035 (round to 5 decimal places)

The two significant digits of 23.43035 = 23

thus making it $23 per person.

Here is another example:

4,500,000/260,732= 17.25910

Two significant digits of 17.25910 = 17.25910 (without rounding). However, if it was 17.54210 it would be $18 per person. Hope those two examples help. If not let me know.

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2 years ago

1 - Three ladders measure 5 3/4 meters, 4 1/2 meters, and 7 1/4 meters in lenght. What is the difference between the longest and

maw [93]

Answer:2 3/4

Step-by-step explanation:

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3 years ago

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What is the least common multiple of 70, 14, and 30

Nonamiya [84]

The LCM is 210

70×2=210

14×15=210

30×7=210

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3 years ago