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vesna_86 [32]
3 years ago
7

Five times the difference of a number, x, and 3 plus 7 is equal to -45.

Mathematics
1 answer:
miskamm [114]3 years ago
7 0

Answer:

5(x-3)+7=-45

Step-by-step explanation:

The only possibly way for 5 to multiply 2 numbers is if those numbers are in parenthesis

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There are 10 pens in a box. There are x red pens in the box. All the other pens are blue. Jack takes at random two pens from the
expeople1 [14]

The probability that one of each color is selected is \frac{10x - x^2}{45}

<h3>Probabilities</h3>

The probability of an event is the chances of the said event

The given parameters are:

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<h3>Calculating the required probability</h3>

The probability that one of each color is selected is calculated as follows:

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So, we have:

P = \frac{10 - x}{10} \times \frac{x}{9} + \frac{x}{10} \times \frac{10 - x}{9}

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Take LCM

P = \frac{2x(10 - x)}{90}

Simplify the above expression

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Expand

P = \frac{10x - x^2}{45}

Hence, the probability that one of each color is selected is P = \frac{10x - x^2}{45}

Read more about probabilities at:

brainly.com/question/7965468

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