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Artemon [7]
2 years ago
7

-12b+6c+18 What is the value of the expression when b=2 and c= -3

Mathematics
2 answers:
Vadim26 [7]2 years ago
8 0

Answer:

-12b+6c+18

= -12(2) +6(-3) + 18

...-24-18+18

therefore...the answer is -24

stepan [7]2 years ago
4 0

The answer -24 hope this was right sjskfbkslfbeiw

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There are only green pens and red pens in a box. there are 3 more red pens than green pens in the box. sheila is going to take a
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Answer: 6 or 9

Step-by-step explanation:

Given the following :

Let the number of green pens = x

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Probability of picking same color = 17/35

Taking two pens at random; probability of picking two pens of same color.

Probability of picking red on first pick then red on second pick ; or picking blue on first pick then blue on second pick

Probability = (Required outcome / Total possible outcomes)

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Probability of picking red then red:

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Therefore, probability of red then red =

(x+3)/(2x+3) × (x+2)/2x+2)

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P(first green) = x/(2x+3)

P(second green) = (x-1) / (2x+3-1) = (x-1) / (2x+2)

P(green then green) = x(x-1)/(2x+3)(2x+2)

Therefore,

[(x+3)(x+2) / (2x+3)(2x+2)] + [x(x-1)/(2x+3)(2x+2)] = 17/35

(x+3)(x+2)+x(x-1) / (2x+3)(2x+2) = 17/35

Cross multiply :

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Factorizing this, we get

(x-6) = 0 or (x-9) = 0

x = 6 or x = 9

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