1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
il63 [147K]
3 years ago
8

I don’t understand the paperso can someone help me llz

Mathematics
1 answer:
V125BC [204]3 years ago
6 0
Dude its easy,you have to count to see how many space there is and when you reach the end you put the number
You might be interested in
An environment engineer measures the amount ( by weight) of particulate pollution in air samples ( of a certain volume ) collect
Serggg [28]

Answer:

k = 1

P(x > 3y) = \frac{2}{3}

Step-by-step explanation:

Given

f \left(x,y \right) = \left{ \begin{array} { l l } { k , } & { 0 \leq x} \leq 2,0 \leq y \leq 1,2 y  \leq x }  & { \text 0, { elsewhere. } } \end{array} \right.

Solving (a):

Find k

To solve for k, we use the definition of joint probability function:

\int\limits^a_b \int\limits^a_b {f(x,y)} \, = 1

Where

{ 0 \leq x} \leq 2,0 \leq y \leq 1,2 y  \leq x }

Substitute values for the interval of x and y respectively

So, we have:

\int\limits^2_{0} \int\limits^{x/2}_{0} {k\ dy\ dx} \, = 1

Isolate k

k \int\limits^2_{0} \int\limits^{x/2}_{0} {dy\ dx} \, = 1

Integrate y, leave x:

k \int\limits^2_{0} y {dx} \, [0,x/2]= 1

Substitute 0 and x/2 for y

k \int\limits^2_{0} (x/2 - 0) {dx} \,= 1

k \int\limits^2_{0} \frac{x}{2} {dx} \,= 1

Integrate x

k * \frac{x^2}{2*2} [0,2]= 1

k * \frac{x^2}{4} [0,2]= 1

Substitute 0 and 2 for x

k *[ \frac{2^2}{4} - \frac{0^2}{4} ]= 1

k *[ \frac{4}{4} - \frac{0}{4} ]= 1

k *[ 1-0 ]= 1

k *[ 1]= 1

k = 1

Solving (b): P(x > 3y)

We have:

f(x,y) = k

Where k = 1

f(x,y) = 1

To find P(x > 3y), we use:

\int\limits^a_b \int\limits^a_b {f(x,y)}

So, we have:

P(x > 3y) = \int\limits^2_0 \int\limits^{y/3}_0 {f(x,y)} dxdy

P(x > 3y) = \int\limits^2_0 \int\limits^{y/3}_0 {1} dxdy

P(x > 3y) = \int\limits^2_0 \int\limits^{y/3}_0  dxdy

Integrate x leave y

P(x > 3y) = \int\limits^2_0  x [0,y/3]dy

Substitute 0 and y/3 for x

P(x > 3y) = \int\limits^2_0  [y/3 - 0]dy

P(x > 3y) = \int\limits^2_0  y/3\ dy

Integrate

P(x > 3y) = \frac{y^2}{2*3} [0,2]

P(x > 3y) = \frac{y^2}{6} [0,2]\\

Substitute 0 and 2 for y

P(x > 3y) = \frac{2^2}{6} -\frac{0^2}{6}

P(x > 3y) = \frac{4}{6} -\frac{0}{6}

P(x > 3y) = \frac{4}{6}

P(x > 3y) = \frac{2}{3}

8 0
2 years ago
WILL GIVE BRAINLIEST HELP PLEASE
Tamiku [17]
The relation t relates x to y. To determine if it is a function, see if one x value can give two different y values. Since each x value only has one y value, the relation is a function. To check if the inverse is a function, see if any one y value will give multiple x values. By inversing t, there are two values of x for the value of y = -4 (x = 4 and x = 6), so this is NOT a function.

Answer: Relation t is a function. The inverse of relation t is NOT a function.
3 0
3 years ago
What is the equation in point-slope form of the line that passes through the point (-1, -4) And has a slope of -3?
Reptile [31]
Point-slope form is y- y_{1} =m(x- x_{1} ) where y1 and x1 are your points from the coordinate and m is the slope.  So yours would look like this: y-(-4)=-3(x-(-1)) or y + 4 = -3(x + 1)
5 0
3 years ago
If a line perpendicular to 2y=x+5 that passes through (2,1) using the slope- intercept form
arlik [135]
Slope of  2y = x + 5:-
This is y = 0.5 x + 2.5  in slope intercept form so its slope = 0.5

Slope of the line perpendicular to it = -1 / 0.5 = -2

it passes through (2 , 1) so we have

y- 1 = -2(x - 2)
y = -2x + 4 + 1

The answer is y = -2x + 5

4 0
3 years ago
A line goes through the points (-4,7) and (1,2) what is the equation of the line
OLga [1]

Answer:

I think it is 4, 14?

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • a student randomly chooses one pen from a box containing 1 black, 3 red, and 6 blue pens. what is the probability that the stude
    14·1 answer
  • If triangle abc congruent to triangle def how do you know that
    12·1 answer
  • Suppose that you have a data set containing 1000 tests scores. How many scores would you expect to find matching each descriptio
    5·1 answer
  • Please someone help
    7·1 answer
  • What is the value of x?
    14·1 answer
  • ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    12·1 answer
  • Simplify 3(7-3) the second power -4(6+2)
    7·2 answers
  • Pick an Dessert for every single day?
    15·1 answer
  • G(x) = x^2 log2x<br> ?<br> ?<br> ?
    14·1 answer
  • The cost of 40 candy bars is $30 how much does 15 cost
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!