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4 years ago

What is the solution to the inequality 2 + 5x > 12?

Mathematics

2 answers:

Alexxx [7]4 years ago

6 0

Im not in expert at this but i did the best i could im 80% sure this is the anser if not im sorry x > 30

Natasha2012 [34]4 years ago

4 0

I think it would be x > 2 because if you subtract 2 from 2 and 12 the 2 disappears and then you have 10 and 5 Divided by 10 = 2.

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Megan ate lunch at a restaurant. The bill came to $99. If she left an 18% tip, what was the total cost of her lunch?

Rashid [163]

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2 years ago

Read 2 more answers

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

ANTONII [103]

Missing part of the question

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

Answer:

$P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}$

$Mean = 1$

$Pr = 0.2617$

Step-by-step explanation:

Given

$n = 4$

$p = 25\%$

Solving (a): The probability distribution of x

We have:

$n = 4$

$p = 25\%$ $= 0.25$

The probability of not having earthquake insurance (q) is:

$q = 1 - p$

$q = 1 - 0.25$ $= 0.75$

If x has insurance, then n - x do not.

The distribution follows a binomial pattern. So, the probability distribution is:

$P(X = x) = ^nC_x * 0.25^x * 0.75^{n-x}$

Substitute 4 for n

$P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}$

Solving (b): The most likely value of x i.e. The mean

We have:

$n = 4$ and

$p = 25\%$ $= 0.25$

$Mean = np$

$Mean = 4 * 0.25$

$Mean = 1$

Solving (c): At least 2 of 4 selected have earthquake insurance.

This is calculated as

$Pr = P(x = 2) + P(x = 3) + P(x = 4)$

$P(X = x) = ^4C_x * 0.25^x * 0.75^{4-x}$

$P(X=2) = ^4C_2 * 0.25^2 * 0.75^{4-2}$

$P(X=2) = 6 * 0.25^2 * 0.75^2 = 0.2109375$

$P(X=3) = ^4C_3 * 0.25^3 * 0.75^{4-3}$

$P(X=3) = 4 * 0.25^3 * 0.75 = 0.046875$

$P(X=4) = ^4C_4 * 0.25^4 * 0.75^{4-4}$

$P(X=4) = 1 * 0.25^4 * 1= 0.00390625$

So:

$Pr = P(x = 2) + P(x = 3) + P(x = 4)$

$Pr = 0.2109375 + 0.046875 + 0.00390625$

$Pr = 0.26171875$

$Pr = 0.2617$ --- approximated

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Julia has correctly answered 35 questions from a test, which is 7/12 of the total. How many questions did the test have?

otez555 [7]

Answer:

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Step-by-step explanation:

Hope this helps :)

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4 years ago

How to solve it because i have no idea

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3 years ago

EMILY FAMILY DROVE 254.6 MILES. THERE CARE USES 19 GALLON OF GASOLINE. HOW MANY MILE DID THEY DRIVE PER GALLON * 5 points

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Step-by-step explanation:

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