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3 years ago

Which of the following functions has a lower bound but no upper bound?

Mathematics

1 answer:

svp [43]3 years ago

6 0

Answer:

C. 1/x

Step-by-step explanation:

Sana nakatulong

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You must be at least 48 inches tall to ride an amusement park ride and your little sister is 39 inches tall.How many more inches

mafiozo [28]

Answer:

9 inches

Step-by-step explanation:

48-39

7 0

3 years ago

Read 2 more answers

Which of the following ratios is equivalent to 5 to 20

morpeh [17]

<h2>which of the following ratios is equivalent to 5 to 20</h2>

10:40

Step-by-step explanation:

because 5/20=1/4 and 10/40 is also equal to 1/4.

hope it helps

4 0

3 years ago

What is the area of a parallelogram with a base of 4cm and a height of 10 cm ?

Ahat [919]

Answer:

4x10=40 =40cm^2

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

Let X have the uniform distribution U(0, 2) and let the conditional distribution of Y , given that X = x, be U(0, x). Find the j

Elina [12.6K]

Answer:

$f(x,y) = \frac{1}{x} \frac{1}{2}= \frac{1}{2x} , 0\leq x \leq 2 , 0\leq y \leq x$

$E(Y|x) = \int_{x=y}^2 y \frac{1}{x} dx= y ln x \Big|_{x=y}^2 =y ln 2 -y ln y = y(1-lny) \$

Step-by-step explanation:

We have two random variables X and Y. $X \sim Unif(0,2)$ and given that X=x, Y has uniform distribution (0,x)

From the definition of the uniform distribution we have the densities for each random variable given by:

$f_X (x) =\frac{1}{2} , 0\leq x\leq 2$

$f_{Y|X} (y|x) = \frac{1}{x}, 0\leq y \leq x$

And on this case we can find the joint density with the following formula:

$f(x,y) = f_{Y|X}(y|x) f_X (x)$

And multiplying the densities we got this:

$f(x,y) = \frac{1}{x} \frac{1}{2}= \frac{1}{2x} , 0\leq x \leq 2 , 0\leq y \leq x$

Now with the joint density we can find the expected value E(Y|x) with the following formula:

$E(Y|x) = \int y f_{Y|X}(y|x)dx$

And replacing we got:

$E(Y|x) = \int_{x=y}^2 y \frac{1}{x} dx= y ln x \Big|_{x=y}^2 =y ln 2 -y ln y = y(1-lny) \$

5 0

4 years ago

Angles please Help,awnser these and get points

Lady_Fox [76]

3. Congruent, 30 degrees
4. 2x+30+50=180
80+2x=180
x=50
2x=100
5. 3x-13+58=90, so 3x+45=90
3x=45 x=15
3x-13=3(15)-13
=45-13
=32 degrees

4 0

3 years ago