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3 years ago

Simplify 2 over squareroot 5

1 answer:

3 0

Square Root cannot be in the Denominator, therefore:

2 / √5
2 × √5 / √5 × √5
2√5 / 5

Hope this helps!

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4 people can dig a hole in 3 hours. How long does it take 9 people.

ad-work [718]

Answer: 1 hour 20 minutes

Step-by-step explanation:

Let's figure out how long it would take 1 person to dig the hole and then divide that number by 9 (since they are sharing the workload).

$\dfrac{1}{4}x=3\qquad \implies \qquad x = 12\quad \text{It takes 12 hours for 1 person}\\\\\\\dfrac{12\ \text{(for 1 person)}}{9\ \text{(people)}}\quad =1\dfrac{1}{3}\quad =\large\boxed{1\ hour\ 20\ minutes}$

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3 years ago

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Answer:

The amount depositied is less than or equal to the amount of money in his wallet.

Step-by-step explanation:

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3 years ago

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cestrela7 [59]

Answer:

below :)

Step-by-step explanation:

1) 12

2}3/2

3)224.64

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2 years ago

Someone please help.

umka21 [38]

Let's go:

$\frac{y}{3} = \frac{27}{y} \\\\ y^2 = 27.3 \\\ y^2 = 81 \\\ y = \sqrt{81} \\\ y = 9$

I hope I helped you.

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3 years ago

Solve 4/x + 8/x+2 = 4

Trava [24]

Answer:

x = 0 and x = 3

Step-by-step explanation:

I will assume that you mean:

4 8

---- + --------- = 4

x x + 2

Here the LCD is x(x + 2).

Multiplying all 3 terms by x(x + 2), we get:

4(x + 2) + 8x = 4(x)(x + 2), or

4x + 8 + 8x = 4x^2 + 8x

Cancelling the 8x terms, we have:

12x = 4x^2, or 3x = x^2, or x^2 - 3x = 0.

Factoring, we get x(x - 3) = 0, which results in x = 0 and x = 3.

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3 years ago