The side of a square is (4x - 2y). What is the perimeter of the square?

Mathematics

2 answers:

ycow [4]2 years ago

7 0

I think its 16x-8y but im not sure. i would wait for another reply.

Elza [17]2 years ago

3 0

4x*4=16x
-2y*4=-8y
Combine

16x-8y

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Which number is the best approximation for 47√− 23√ ?

Charra [1.4K]

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3 years ago

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5.According to the Bureau of Labor Statistics, in calendar year 2000, the average duration of unemployment was 12.7 weeks, with

Ket [755]

Answer:

Probability that a randomly selected individual who was unemployed in 2000 would have been unemployed between 12 and 13 weeks is 0.83144 .

Step-by-step explanation:

We are given that according to the Bureau of Labor Statistics, in calendar year 2000, the average duration of unemployment was 12.7 weeks, with a standard deviation of 0.3 weeks.

Let X = randomly selected individual who was unemployed in 2000

Since distribution is approximately normal, so X ~ N( $\mu=12.7,\sigma^{2} = 0.3^{2}$ )

The z score probability distribution is given by;

Z = $\frac{X-\mu}{\sigma}$ ~ N(0,1)

where, $\mu$ = population mean = 12.7 weeks

$\sigma$ = population standard deviation = 0.3 weeks

So, the probability that a randomly selected individual who was unemployed in 2000 would have been unemployed between 12 and 13 weeks is given by = P(12 < X < 13) = P(X < 13) - P(X <= 12)

P(X < 13) = P( $\frac{X-\mu}{\sigma}$ < $\frac{13-12.7}{0.3}$ ) = P(Z < 1) = 0.84134