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Zielflug [23.3K]

3 years ago

8

Suppose that a point (X,Y) us chosen at random from the rectangle S defined as follows: S={(x,y) : 0<= x <=2 and 1<=y&l

t;=4.} a. Determine the joint p.d.f. of X and Y, the marginal p.d.f. of X, and the marginal p.d.f. of Y. b. Are X and Y independent?

1 answer:

mrs_skeptik [129]3 years ago

7 0

For a 19 foot scale find the frequency of a note to the frequency of the preceding note?

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You go to an arcade and purchase a card with game credits. After playing 5 games you have 33 credits left. You play 4 more games

Amanda [17]

Answer:

$y=-3x+48$

Step-by-step explanation:

We will use slope-intercept form of equation to write our equation. The equation of a line in slope-intercept form is: $y=mx+b$ , where m= Slope of the line, b= y-intercept.

To write the equation that represents the number of credits y on the cards after x games, we will find slope of our line.

We have been given that after playing 5 games we have 33 credits left. We play 4 more games and we have 21 credits left. So our points will be (5,33) and (9,21).

Let us substitute coordinates of our both given points in slope formula: $m=\frac{y_2-y_1}{x_2-x_1}$ ,

$m=\frac{21-33}{9-5}$

$m=\frac{-12}{4}=-3$

Now let us substitute m=-3 and coordinates of point (5,33) in slope intercept form of equation to find y-intercept.

$33=-3\cdot 5+b$

$33=-15+b$

$33+15=b$

$48=b$

Upon substituting m=-3 and b=48 in slope-intercept form of an equation we will get,

$y=-3x+48$

Therefore, our desired equation will be $y=-3x+48$ .

6 0

3 years ago

Simplify the expression explain each step 10+(2+y)

cestrela7 [59]

Answer:

12y

Step-by-step explanation:

3 0

3 years ago

Given the graph of log y=log(2)x. Find the area of the three inscribed rectangles

evablogger [386]

Answer: $6+2log_{2} 6$

Step-by-step explanation:

$S=s_{1} +s_{2} +s_{3} = 2(h_{1} +h_{2} +h_{3} )$

$h_{1} = log_{2}2=1$

$h_{2} = log_{2}4=2$

$h_{3} = log_{2}6$

$S = 2(1+2+log_{2}6) = 6+2log_{2}6$

8 0

3 years ago

inysia [295]

Answer:

D. The graph of function $g$ is the graph of function $f$ shifted 4 units to the left.

Step-by-step explanation:

the function $g$ is composite function between $f$ and $x + 4$ , then you can re-write $g$ as:

$g(x) = 10^{x+4}$

The transformation happened in the input, then you have an horizontal shifted and how it's adding 4 units then you go "faster" and move to left the graph.

In the image you can see what's mean sum a constant in the $x$ of a function.

8 0

2 years ago

Which letter represents (-2,3)?

Aleks [24]

Answer:

N represents (-2,3)

Step-by-step explanation:

x axis of N = -2

y axis of N = 3

5 0

2 years ago

Read 2 more answers