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2 years ago

What is the function rule for the line?

Mathematics

1 answer:

fomenos2 years ago

7 0

Answer: It is f(x)= -3/2x-2

Step-by-step explanation: f(x) is the same as y. The formula for a line is slope-intercept form (y=mx+b). The -2 is the y-intercept, and the line intercepts the graph at -2. The slope is -3/2 because it rises 3 and goes to the left -2.

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Find the radius of a circle that has an area of 212

kobusy [5.1K]

Answer:

The answer should be: r ≈ 8.21

5 0

3 years ago

Read 2 more answers

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

4 years ago

) Sarah donated one-tenth of her salary to an orphanage, one-third of her salary is spent on food, one-fourth of salary on rent

AleksAgata [21]

Answer:

₹ 4000

Step-by-step explanation:

Sarah's salary =₹ 30000

one-tenth of her salary to an orphanage= 1/10*₹ 30000= ₹ 3000
one-third of her salary is spent on food= 1/3*₹ 30000= ₹ 10000
one-fourth of salary on rent and electricity =1/4*₹ 30000= ₹ 7500
one-twentieth of her salary on the telephone= 1/12*₹ 30000= ₹ 2500
donated some amount to the Prime Minister's relief fund = x
She was left with ₹ 3000.

x= ₹ 30000- (₹ 3000+₹ 10000+₹ 7500+₹ 2500+₹ 3000)= ₹ 4000

8 0

3 years ago

Write the equations included in the same set of related facts as 6x8=48

Reil [10]

6×6=36. also get a calculator

5 0

3 years ago

Pleqse help me do this thank you

SpyIntel [72]

Answer:

84 grams; 5 ounces

Step-by-step explanation:

1oz = 28g

3*1oz = 3*28g

3 oz = 84g

140g = 5*28g = 5*1oz

140g = 5oz

5 0

4 years ago