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Kaylis [27]
2 years ago
6

Help question is in the pic PLEASE EXPLAIN HOW YOU GOT THE ANSWER! THERE IS A PART C AS WELL!!

Mathematics
2 answers:
Tems11 [23]2 years ago
7 0
Your answer is 5.6 yw :)
BigorU [14]2 years ago
4 0

Answer:

5.6

Step-by-step explanation:

you multiply the base and height then divide by 2

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A car dealership sells 0, 1, or 2 luxury cars on any day. When selling a car, the dealer also tries to persuade the customer to
melisa1 [442]

Answer:

Mean = 1.42

Variance = 0.58

Step-by-step explanation:

Given: X denote the number of luxury cars sold in a given day, and Y denote the number of extended warranties sold.

Also, joint probability function of X and Y are given.

To find:

mean and variance of X

Solution:

From the given joint probability function of X and Y,

P(X=0)=\frac{1}{6}\\P(X=1)=\frac{1}{12}+\frac{1}{6}=\frac{1+2}{12}=\frac{3}{12}\\P(X=2)=\frac{1}{12}+\frac{1}{3}+\frac{1}{6}=\frac{1+4+2}{12}=\frac{7}{12}

Mean of X:

E(X)=\sum XP(X)\\=0\left ( \frac{1}{6} \right )+1\left ( \frac{3}{12} \right )+2\left ( \frac{7}{12} \right )\\=0+\frac{3}{12}+\frac{14}{12}\\=\frac{17}{12}=1.42

Variance of X:

E(X^2)=\sum X^2P(X)\\=0^2\left ( \frac{1}{6} \right )+1^2\left ( \frac{3}{12} \right )+2^2\left ( \frac{7}{12} \right )\\=0+\frac{3}{12}+\frac{28}{12}\\=\frac{31}{12}

var(X)=E\left [ X^2 \right ]-\left ( E\left [ X \right ] \right )^2\\=\frac{31}{12}-\left ( \frac{17}{12} \right )^2\\=\frac{31}{12}-\frac{289}{144}\\=\frac{372-289}{144}\\=\frac{83}{144}\\=0.58

5 0
3 years ago
Problems with Equations: Mastery Test
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Step-by-step explanation:

The answer is 8

Because you have to put each value of x given in the equation 3x = 24

So when you put the value 8

3(8) = 24

24 = 24

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3 years ago
Find f(-5) if f(x) = |x+1|​
lions [1.4K]

Answer:

4

Step-by-step explanation:

just put -5 to x

|-4|=4

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3 years ago
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soldi70 [24.7K]
Ur answer is c



dbjdbdnsbsjeej have a good day
8 0
3 years ago
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In which quadrant is the point (-3,5) located?
Ket [755]

Answer:

(-3,5) lies in Quadrant 2

the solution is b

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3 years ago
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