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miss Akunina [59]

2 years ago

14

you are being deal one card from a standard 52 card deck. what is the probability that you will be dealt a card other than an ac

e?

2 answers:

8090 [49]2 years ago

8 0

I love you please notice me

galben [10]2 years ago

3 0

The probability of you getting in Ace is 4/52

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What is the median of this distribution?

Butoxors [25]

A. 6 because it is in the middle of the data.

6 0

2 years ago

Read 2 more answers

How did he get from 3^-16/3/3^-8/3 to 0.00285333857/0.00285333857??? (The circled part) Because when I put it in the calculator

seropon [69]

Step-by-step explanation:

$\frac{ {3}^{ - \frac{16}{ 3} } }{ {3}^{ - \frac{ 8}{3} } } = \frac{0.002853338}{0.05341665075}$

I think, he made a mistake because the exponents have different values but then if you'll look at his results, he just wrote the same thing. If you want, you could post the original problem, and I'll solve it for you :)

7 0

2 years ago

Select the best definitions of population and sample. A sample is the group from whom information is being collected. A populati

Elena L [17]

Answer:

A population is defined as the data set which consists of all members of a specified group and the sample contains a part or a subset of a population.

For example : all the students of a school are population. But out of all, how many students play sports is a sample.

Hence, the answer is - A population is the complete group under study. A sample is the sub-collection of members of the population from which data are actually collected.

4 0

3 years ago

A circle with radius of 2cm sits inside a circle with radius of 4cm. What is the area of the shaded region?

uysha [10]

Answer

12.56.. I think

umm you haven't said which part of the circles is shaded but I assumed that it's the gap between the two circles

$\pi {4}^{2} - \: \pi {2}^{2}$

7 0

2 years ago

Let y′′′−9y′′+20y′=0. find all values of r such that y=erx satisfies the differential equation. if there is more than one correc

DerKrebs [107]

we are given

differential equation as

$y'''-9y''+20y'=0$

we are given

$y=e^{rx}$

Firstly, we will find y' , y'' and y'''

those are first , second and third derivative

First derivative is

$y'=re^{rx}$

Second derivative is

$y''=r*re^{rx}$

$y''=r^2e^{rx}$

Third derivative is

$y'''=r^2*re^{rx}$

$y'''=r^3e^{rx}$

now, we can plug these values into differential equation

and we get

$r^3 e^{rx}-9r^2 e^{rx}+20re^{rx}=0$

now, we can factor out common terms

$e^{rx}(r^3 -9r^2 +20r)=0$

we can move that term on right side

$(r^3 -9r^2 +20r)=0$

now, we can factor out

$r(r^2 -9r +20)=0$

$r(r-5)(r-4)=0$

now, we can set them equal

$r=0$

$r-5=0$

$r=5$

$r-4=0$

$r=4$

so, we will get

$r=0,4,5$ ...............Answer

4 0

3 years ago