3 times the amount of x+2? it is worth 10 points and

Mathematics

2 answers:

FinnZ [79.3K]3 years ago

8 0

Not too sure what you're asking, but...

3(x+2) is the expression

svetoff [14.1K]3 years ago

8 0

You should start out like this. 3times(x+2). When you simplify it, It should look like 3x+2. Since there is no equal sign, you cannot solve the equation. Therefore you leave it like that.

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Evaluate x^2 − 4x + 5, when x = − 3

Gnom [1K]

Answer:

$\huge\boxed{26}$

Step-by-step explanation:

$\sf x^2-4x+5\\Given \ that \ x = -3\\(-3)^2-4(-3)+5\\9+12+5\\26$

3 0

3 years ago

Read 2 more answers

The distribution of income tax refunds follow an approximate normal distribution with a mean of $7010 and a standard deviation o

Andrej [43]

Answer:

A refund must be above $7,139 before it is audited.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 7010, standard deviation = 43.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

The empirical rule is symmetric, which means that the lowest (100-99.7)/2 = 0.15% is at least 3 standard deviations below the mean, and the upper 0.15% is at least 3 standard deviations above the mean.

Use the Empirical Rule to determine approximately above what dollar value must a refund be before it is audited.

3 standard deviations above the mean, so:

7010 + 3*43 = 7139.

A refund must be above $7,139 before it is audited.

5 0

3 years ago

? numbers can be written as a product of ? factors. this is called the prime factorization of a number

muminat

The complete sentence should be:

Composite numbers can be written as a product of prime factors. This is called the prime factorization of a number.

A prime number is a number that can't be divided by any other number other than 1 or itself. Otherwise, that is a composite number. For example, 50 is a composite number. Through prime factorization,

50
/ \
10 5
/ \
5 2

The prime factors of composite number 50 are 5, 5 and 2.

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3 years ago

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cluponka [151]

Their earnings would be the same after 4 hours

Let the number of hours be x, and the weekly earning be y

So, the given parameters are:

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