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3 years ago

8

The mean age of 5 people in a room is 40 years. A person enters the room. The mean age is now 39. What is the age of the person

who entered the room?

1 answer:

IrinaVladis [17]3 years ago

6 0

Answer:

10 years old :)

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Assume that the random variable X is normally distributed with mean μ=80 and standard deviation σ=18. Find the 11th percentile f

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Answer:

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What is the radical form of the expression (2x^4y^5)^3/8

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We are given expression: $(2x^4y^5)^{3/8}$

Let us distribute 3/8 over exponents in parenthesis, we get

$(2^{3/8}x^{4\times 3/8}y^{5\times 3/8}) = (2^{3/8}x^{12/8}y^{15/8})$

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We can get x and y out of the radical because, we get whlole number 1 for x and y exponents for the mixed fractions.

So, we could write it as.

$(2^{3/8}x^{1\frac{4}{8}} y^{1\frac{7}{8}} ) = xy(2^{\frac{3}{8} }x^{\frac{4}{8}} y^{\frac{7}{8}} )$

Now, we could write inside expression of parenthesis in radical form.

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3 years ago

The number 2 in the expression 5 + 2x is called the

steposvetlana [31]

Answer:

Step-by-step explanation:

The coefficient of x is simply a number. The x gives it it's meaning. So if the coefficient of x changed from 2 to 6 that would mean there would 6 x's being added to five, not 2.

For example if x=2.

instead of 5 + 2*2

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it would be 5 + 6*2

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The difference between the answers is 4x, as there are an additional 4x's.

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Step-by-step explanation:

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Read 2 more answers