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3 years ago

Which set of numbers is the most reasonable to describe the number of desks in a classroom?

Mathematics

1 answer:

Molodets [167]3 years ago

6 0

Answer:

B. whole numbers

Step-by-step explanation:

whole numbers are numbers such as 1, 2, 3, 4, etc. This is the most reasonable choice, so the answer is whole numbers.

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3w + 18 = 5w - 12<br> What is the answer

Gennadij [26K]

Answer:

w=15

Step-by-step explanation:

-2w = -30 // /(-2)

w= 15

4 0

3 years ago

Help with this question ??

Musya8 [376]

Answer:

-2.6

Step-by-step explanation:

5x - 5 >/ - 18

5x >/ -13

x>/ -13/5

x>/ -2.6

3 0

3 years ago

Please don’t skip this is due tonight

4vir4ik [10]

Answer:

I think no more that 13 bags($19.5) with 104 apples? Check it

Step-by-step explanation:

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4 years ago

Let X be a continuous random variable with density functionf(x)={1−|x|0 for −1

BlackZzzverrR [31]

Answer:

$f_Y (y) =\frac{d}{dy} = 2 \frac{1}{2 |\sqrt{y}|} -1 = \frac{1}{|\sqrt{y}|} -1,0 \leq Y\leq 1$

Step-by-step explanation:

For this case we want to find the density function for $Y=X^2$

And we have the following density function for the random variable X:

$f(X) = 1- |X|,-1 \leq X \leq 1$

So we can do this replacing $Y=X^2$

$F_Y (Y \leq y) = P(X^2 \leq y)$

If we apply square root on both sides we got:

$P(-\sqrt{y} \leq X \leq \sqrt{y}) = \int_{-\sqrt{y}}^0 1+t dt +\int_{0}^{\sqrt{y}} 1-t dt$

And if we integrate we got this:

$F_Y (y) = [t+ \frac{t^2}{2}] \Big|_{-\sqrt{y}}^0+ [t -\frac{t^2}{2}] \Big|_{0}^{\sqrt{y}}$

And replacing we got:

$F_Y (y) = [0 -(-\sqrt{y} +\frac{y}{2})] + [\sqrt{y} -\frac{y}{2}]$

$F_Y (y) = 2 |\sqrt{y}| -y$

And if we want to find the density function we just need to derivate the pdf like this:

$f_Y (y) =\frac{d}{dy} = 2 \frac{1}{2 |\sqrt{y}|} -1 = \frac{1}{|\sqrt{y}|} -1,0 \leq Y\leq 1$

3 0

4 years ago

-k^2-(3k-5n) +4n;k=-1 and n=-2

Dafna11 [192]

-k^2 - (3k - 5n) + 4n....when k = -1 and n = -2

-1^2 - (3(-1) - 5(-2) + 4(-2)
1 - (-3 + 10) + 4(-2)
1 - 7 - 8
-14 <=

3 0

4 years ago

Read 2 more answers