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3 years ago

9

A box contains 3 yellow, 2 red, 4 green and 3 black marbles. Two marbles are taken one after the other at random from the box. W

hat is the probability that both marbles are red?

1 answer:

Nata [24]3 years ago

7 0

I believe it's 2/10.

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2 years ago

A gas tank has a leak. Each hour it loses 3 gallons of gas. Write the equation that represents how much gas, g , the tank loses

zhenek [66]

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3 years ago

Perform the following operations and prove closure. Show your work.<br><br> (x/x+3) + (x+2/x+5)

Westkost [7]

Answer:

$\frac{2(x^{2} + 5x + 3)}{(x+3)(x+5)}$

Step-by-step explanation:

We need to sum the following two expressions:

$\frac{x}{x+3} + \frac{x+2}{x+5}$

$\frac{x(x+5) + (x+2)(x+3)}{(x+3)(x+5)}$

expanding the polynomial in the numerator:

$\frac{2x^{2} + 10x + 6}{(x+3)(x+5)}$

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This is the most simplified form we can get:

$\frac{2(x^{2} + 5x + 3)}{(x+3)(x+5)}$

8 0

3 years ago

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Simplify the expression 8y+y-5y

IRINA_888 [86]

Hello

8y+y-5y = 9y- 5y =4y

or 8y+y-5y = y(8+1-5) =y (9-5) = y(4) =4y

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3 years ago

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