A local school is holding a fundraising event. Everyone that attends receives a raffle ticket. At the end of the night the raffle is held.
Assume 1,000 people attend the event, and hence there are 1,000 tickets in the raffle.
There will be
• 85 tickets that each win $10
• 60 tickets that each win $20
• 20 tickets that each win $50
• 10 tickets that each win $100
• and the rest of the tickets win nothing
What is the variance of the winnings from this raffle?
Do not round until you have your answer. Round your answer to 2 decimal places.

Answer:

f(x) = 5x - 30

Yes it is a function

Step-by-step explanation:

Because when you input 0 you get -30 we know it starts at 0 or (0,-30). This gives us b in the equation y = mx + b.

We know that for every 4 cars washed it increases by 20. So 20/4 is 5. This tells us m = 5.

Plug it all in and you get  y = 5x - 30 or f(x) = 5x - 30

Answer:

1

--------------

y-1

with the restriction y cannot equal -1

Step-by-step explanation:

y+1

--------------

y^1 -1

Noticing that the denominator is the difference of squares and factoring

y+1

--------------

(y+1)(y-1)

Canceling like terms

1

--------------

y-1

with the restriction y cannot equal -1

Answer:

9.5 I think

STEPS-

9+4+11+14=38

38/4=9.5

Answer:

157.079632679

Answer: 1920

Step-by-step explanation:

Answer:

x=8 is correct answer

Step-by-step explanation:

when you put 8 then as shown in figure it is about 90 degree angle so x=8 is correct

Answer:

24

Step-by-step explanation:

the area of the triangle is 4 x 2, which equals 8.

Then you calculate the area of the rectangle.

Area of Rectangle = L x W or (in this case) 8 x 4

8 x 4 = 32

Then you subtract the area of the triangle from the area of the rectangle

So, your equation would be 32 - 8  = 24

Therefore, the area of the shape is 24

Answer:  

24

Step-by-step explanation:

the area of the triangle is 4 x 2, which equals 8.

Then you calculate the area of the rectangle.

Area of Rectangle = L x W or (in this case) 8 x 4

8 x 4 = 32

Then you subtract the area of the triangle from the area of the rectangle

So, your equation would be 32 - 8  = 24

Therefore, the area of the shape is 24

Answer:

one solution

Step-by-step explanation:

Step: Solvex+y=7for x:

x+y+−y=7+−y(Add -y to both sides)

x=−y+7

Step: Substitute−y+7forxin2x−3y=−21:

2x−3y=−21

2(−y+7)−3y=−21

−5y+14=−21(Simplify both sides of the equation)

−5y+14+−14=−21+−14(Add -14 to both sides)

−5y=−35

−5y

−5

=

−35

−5

(Divide both sides by -5)

y=7

Step: Substitute 7 for y in x=−y+7:

x=−y+7

x=−7+7

x=0(Simplify both sides of the equation)

y = 7, x = 0

Answer:

24

Step-by-step explanation:

It take 4 to make one yard and you need six yards soo..

6 x 4 = 24

Answer:

24 ornaments

Step-by-step explanation:

[tex]\frac{1}{4} = 25%[/tex]%

6 yards x 0.25 = 1.5 yards

[tex]\frac{6}{0.25} = 24[/tex] ornaments

to check:

24 ornaments x 0.25 yards each = 6 yards in total

Answer:

1/9

Step-by-step explanation:

1/3 ÷ 3 = 1/9

People use the KCF method for this kind of solution.

At first it is 1/3 ÷ 3/1, after that you need to flip the 2nd fraction. For example, to be able to flip the fraction to find the answer, the equation your supposed to get after flipping the 2nd fraction is 1/3 x 1/3 which makes 1/9.

Answer:

D. y = 12x - 3

Step-by-step explanation:

We know that the number of boxes is x and that each box contains 12 jars

This means that:

Total number of jars = number of boxes * number of jars in each box

Total number of jars = 12x jars

Now, Gabriel's mum used 3 jars

This means that, the number of remaining jars (y) can be calculated by removing 3 from the total number of jars (12x)

Based on the above:

Remaining jars = Total number of jars - Number of used jars

Y = 12x - 3

Hope this helps :)

Answer

35

Step-by-step explanation:

Using Pythagoras theorem since it's a right angle triangle,

The missing side, say h,is the hypotenuse

28²+21²= h²

784+441=h²

√1225=√h²

h=35

Answer:

(0,-3) and (6,0)

Step-by-step explanation:

Now you use two point form to make equation

Y2-Y1/Y-Y1=X2-X1/X-X1

here Y2=0 ,Y1=-3

X2=6 and X1=0  now put in equation to get answer

Answer:

[tex]x = \frac{3y - w}{12} [/tex]

Step-by-step explanation:

[tex] \frac{12x}{12} = \frac{3y - w}{12} [/tex]

[tex]x = \frac{3y - w}{12} [/tex]

Answer:

am pretty sure it is the frist one

Answer:

don't know only

Step-by-step explanation:

ok

aaaaacvhj

Answer:

78.5

Step-by-step explanation:

hope i helped

Answer:

i think it's the 2th one not sure tho

Answer:

15/22

Step-by-step explanation:

Answer:

the answer is -58

Step-by-step explanation:

you factor out the negitive sign and calcuate.

Answer: [1/10 9/6]

Step-by-step explanation:

Step-by-step explanation:

5x + 3 = -2x + 3

7x = 0

x = 0

y = 0 + 3

y = 3

(0, 3)

one solution

Answer:

11.

Step-by-step explanation:

Given that the drug has no effect and that the probability of nausea was 0.0124, to find the mean and standard deviation for the numbers of people in groups of 828 that can be expected to experience nausea, the following calculation must be performed:

828 x 0.0124 = X

10.26 = X

Thus, the number of people who may feel nauseous after using the drug in question is 11 individuals.

Answer:

P=78,56 If something is not clear to you, just ask, I will be happy to help :)

Step-by-step explanation:

To calculate the total area of a figure, you divide it into several shapes.

P1, P2, and P3 are the area of the rectangle, P4 is the area of the square, and P5 is the area of one-quarter of the circle.

P1=a*b

P1=8*6

P1=48

P2=a*b

P2=3*2

P2=6

P3=a*b

P3=4*2

P3=8

P4=[tex]a^{2}[/tex]

P4=[tex]2^{2}[/tex]

P4=4

P5=[tex]\frac{1}{4} * r^{2} *\pi[/tex]

P5 = [tex]\frac{1}{4} * 4^{2} * \pi[/tex]

P5 =4[tex]\pi[/tex] or approximately 12,56

P = P1+P2+P3+P4+P5

P = 48+6+8+4+12,56

P=78,56

Answer:

Step-by-step explanation:

Inpert

Answer:

I think Region 1 is my answer, because the first equation is -1.1 and thats the closest point

Ok. These are the answers. Tell me if you didm't understand my writing.

Answer:

graph

Step-by-step explanation:

Answer:

Multiples of 3 are (3, 6, 9, 12, 15, 18, 21, 24)

LCM of 3 and 7 is 21

Answer:

the lcm of 3,7 is 21

Step-by-step explanation:

Find the prime factorization of 33=3

Find the prime factorization 0f 77=3

Multiply each factor 3x7=21

Answer:

90%

90% of the teas were caffeinated.

Step-by-step explanation:

Total teas: 63+7= 70

63/70 x 100/1= 90%

90% of the teas were caffeinated.

Answer:

90%

Step-by-step explanation: