3 years ago

What do all these numbers have in common ?

Mathematics

2 answers:

puteri [66]3 years ago

6 0

They are all only a fraction of a whole number / none of them are whole numbers

madam [21]3 years ago

4 0

They are above zero in magnitude

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Replacement times for CD players are normally distributed

slavikrds [6]

Answer:

0.04

Step-by-step explanation:

X~N(μ=14.2; σ=0.9), a=7

$P(X>7)=1-P(X\leq 7)$

$P(0\leq X\leq a)=P(\frac{0-\mu}{\sigma} \leq \frac{X-\mu}{\sigma}\leq \frac{a-\mu}{\sigma}), Z= \frac{X-\mu}{\sigma}=P(0\leq X\leq a)=P(\frac{0-\mu}{\sigma} \leq \frac{X-\mu}{\sigma}\leq \frac{a-\mu}{\sigma}), Z= \frac{X-\mu}{\sigma}$

$P(0\leq X\leq 7) = P(\frac{0-5.5}{1.5} \leq Z\leq \frac{7-5.5}{1.5}) = \Phi(1.66)-\Phi(-3.66) = \Phi(1.66) -(1-\Phi(3.66)) = 0.95-(1-0.99)=0.96$

P(X>7)=1-0.96=0.04

3 0

3 years ago

Find the measure of y.<br> • 110°<br> • 100°<br> • 103°<br> • 93°

Volgvan

The measure of y would be 110° i believe

6 0

3 years ago

Read 2 more answers

Adam says that the expression 52-3y is equal to 20 when y equal 2.Explain why Adam's answer is incorrect.

larisa [96]

Because when you do 3 x 2=6 and then 52-6 it doesn’t equal 20. It equals 46.

6 0

3 years ago

How do you multiply decimals?

Ulleksa [173]

I found this online, hope it helps

Just follow these steps:
Multiply normally, ignoring the decimal points.
Then put the decimal point in the answer - it will have as many decimal places as the two original numbers combined.

5 0

3 years ago

Find the power setof Cartesian product A×B, where A={1,2,3} and B={0,1,2}.

blondinia [14]

Answer:

{(1,0)(,1,1),(1,2),(2,0),(2,1),(2,2),(3,0),(3,1),(3,2)}

Solution

A= {1,2,3}

B={0,1,2}

A×B ={(1,0),(1,1),(1,2),(2,0),(2,1),(2,2),(3,0),(3,1),(3,2)}

5 0

3 years ago