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Anni [7]
2 years ago
10

Two fair dice are thrown. Let X be a random variable giving the score on the rst die and Y be a random variable giving the large

r of the two scores. Write down the joint distribution of X and Y . Find the mean and variance of Y
Mathematics
1 answer:
defon2 years ago
5 0

Answer:

idk

idkidk

Step-by-step explanation:

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Can someone answer the highlighted question!!! PLEASE
murzikaleks [220]

We can rearrange 3x+y=9 to look more conventional by subtracting 3x from both sides and making it y= -3x+9.

Now we want to find a line that is parallel to this and goes through the point (0,-4). We know that -3 is the slope. With this in mind, if we want the other line to be parallel then it must have the same slope so that they never intersect. This gives us one of the numbers we need for the second line.

This means our second equation is looking like; y= -3x+b. This means we need to find b (the y-intercept) but we are also given a point it must go through and this is (0,-4). We simply plug this in into our new equation we need to solve and we get ; -4 = -3(0) + b . "since 0 is the x and -4 is the y" . From this we get that b= -4. This means the equation of a line parallel is:

y = -3x-4

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3 years ago
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Lines m and n are parallel, as shown in the diagram below. What are the measures of angles A and B?
baherus [9]

Step-by-step explanation:

since m and n are parallel so the right side of b are equal 65degree. 180-55-65 to get B is 60 degree. After that, 180-60-65 will get the A is 55degree

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3 years ago
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Rewrite each of the following as an expression of x which does not involve any logs. 100^log10(x)
Lana71 [14]
- Rewrite each of the following as an expression of x which does not involve any logs<span>.? Can someone show me ... Best Answer: To do it you have to know that 1000 = 10³ ; </span>100<span> = 10² ; .01 = 10^-2 </span>log 10<span>^3x = 3x 10^(2logx) = x²</span>
8 0
3 years ago
Which of the following functions would result in a graph that is shifted three
Ivenika [448]

Answer:

B. f(x) = 4 log(x+3)

Step-by-step explanation:

B. f(x) = 4 log(x+3) : shifted three units to the left of g(x) = 4 logx

7 0
3 years ago
The height of a triangle is 2 less than 5 times it's base. If the base of the triangle is x feet, and the area of the triangle i
____ [38]

Answer:

Area A = 12 = 1/2 × x × (5x-2)

5x^2 - 2x -24 = 0

Solution;

Base x = 2.4

Height h = 10 ft

Step-by-step explanation:

Given;

base of the triangle is x feet;

Base = x

The height of a triangle is 2 less than 5 times it's base;

Height = 5x - 2

the area of the triangle is 12 square feet;

Area A = 12 ft^2

The area of a triangle is;

Area A = 1/2 × base × height

Substituting the base and height;;

Area A = 1/2 × x × (5x-2)

Area A = 1/2 × (5x^2 - 2x)

Area A = 12

12 = 1/2 × (5x^2 - 2x)

Multiply through by 2.

24 = (5x^2 - 2x)

5x^2 - 2x -24 = 0

Solving the simultaneous equation;

x = 2.4 or -2

Since the base cannot be negative;

x = 2.4 ft

Height h = 5x -2 = 5(2.4) - 2 = 12 - 2 = 10 ft

Base x = 2.4

Height h = 10 ft

6 0
3 years ago
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