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2 years ago

13

Tom is 8 years younger than John. Let j represent John's age in years. Write an algebraic expression to represent Tom's age in y

ears.

1 answer:

AlexFokin [52]2 years ago

5 0

Answer:

(j-8)years is the answer to the question

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Some parts of California are particularly earthquake- prone. Suppose that in one metropolitan area, 25% of all homeowners are in

aleksandrvk [35]

Answer:

a. Binomial random variable (n=4, p=0.25)

b. Attached.

c. X=1

Step-by-step explanation:

This can be modeled as a binomial random variable, with parameters n=4 (size of the sample) and p=0.25 (proportion of homeowners that are insured against earthquake damage).

a. The probability that X=k homeowners, from the sample of 4, have eartquake insurance is:

$P(x=k) = \dbinom{n}{k} p^{k}(1-p)^{n-k}\\\\\\P(x=k) = \dbinom{4}{k} 0.25^{0}\cdot0.75^{4}$

The sample space for X is {0,1,2,3,4}

The associated probabilties are:

$P(x=0) = \dbinom{4}{0} p^{0}(1-p)^{4}=1*1*0.3164=0.3164\\\\\\P(x=1) = \dbinom{4}{1} p^{1}(1-p)^{3}=4*0.25*0.4219=0.4219\\\\\\P(x=2) = \dbinom{4}{2} p^{2}(1-p)^{2}=6*0.0625*0.5625=0.2109\\\\\\P(x=3) = \dbinom{4}{3} p^{3}(1-p)^{1}=4*0.0156*0.75=0.0469\\\\\\P(x=4) = \dbinom{4}{4} p^{4}(1-p)^{0}=1*0.0039*1=0.0039\\\\\\$

b. The histogram is attached.

c. The most likely value for X is the expected value for X (E(X)).

Is calculated as:

$E(X)=np=4\cdot0.25=1$

6 0

3 years ago

Tfewfgeeffeefefefwefwewwefewewfefwfew

vfiekz [6]

Answer:

I understand your pain

Step-by-step explanation: sadge

6 0

3 years ago

An equation is shown below:

Airida [17]

So you would do 5*2x +5*-8 +15=-15
Then simplify so it would be 10x + -40 + 15 = -15
Then add -40 and 15 together
Then it would be 10x + -25 = -15
Then add 25 to -25 and -15
So it would be 10x = 10
And then divide 10 from 10 with would be 1 so x = 1

8 0

4 years ago

Read 2 more answers

Explain your answer !!<br><br> Will give brainlst

horrorfan [7]

Answer:

It’s a, bc of add, pls give brainliest

Step-by-step explanation:

4 0

3 years ago

What is 16a +24b in distributive property

Damm [24]

Well, first... you want to factor out the GCF, (Greatest Common Factor), which will end up being 8.

Then, you divide both 16a and 24b by 8.

Simplify each term, and your answer will be:

8(2a+3b)

Hope this helps. If you have any further questions, feel free to email me at ([email protected])

8 0

3 years ago