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2 years ago

Select the correct product. (x + 8)(y + 3) xy + 8x + 3y + 24 xy + 3x + 8y + 24 11xy 24xy

Mathematics

2 answers:

ExtremeBDS [4]2 years ago

5 0

Answer:

Option B. ( xy + 3x + 8y + 24 )

Step-by-step explanation:

In this question we have to find the product of the given expression

(x + 8) (y + 3)

By distributive property.

(x + 8) (y + 3) = x (y + 3) + 8 (y + 3)

= x (y) + 3x + 8y + 3 × 8

= ( xy + 3x + 8y + 24 )

Therefore, Option B. ( xy + 3x + 8y + 24 ) is the correct answer.

MAXImum [283]2 years ago

4 0

(x + 8)(y + 3)

x*(y+3) + 8*(y + 3)

x*y + 3*x + 8*y + 3*8

xy + 3x + 8y + 24

So the correct product is = xy + 3x + 8y + 24, I guess the second expression.

I hope this helps.

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The life of a red bulb used in a traffic signal can be modeled using an exponential distribution with an average life of 24 mont

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Answer:

See steps below

Step-by-step explanation:

Let X be the random variable that measures the lifespan of a bulb.

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Let A and B be the events,

A = “The bulb will last at least 24 months”

B = “The bulb will last at least 18 months”

We want to find P(A | B).

By definition P(A | B) = P(A∩B)P(B)

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• If the signal has six red bulbs, what is the probability that at least one of them needs replacement at the first inspection? Assume distribution of lifetime of each bulb is independent

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