Answer:
-2
Step-by-step explanation:
I got it wrong and it told me negative 2 was the correct answer lol
red die and a blue die are rolled. You win or lose money depending on the sum of the values of the two dice. If the sum is 5 or 9, you win $6. If the sum is 6, 7, or 12, you win $2. If the sum is any other value (2, 3, 4, 8, 10, or 11), you lose $4. Let X be a random variable that corresponds to your net winnings in dollars. What is the expected value of X
Answer:
The expected value of X is $0.2222.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
For each dice, there are 6 possible outcomes(values from 1 to 6). So for 2 dices, there are [tex]6^2 = 36[/tex] possible outcomes.
Desired outcomes:
Sum 5: (1,4), (2,3), (3,2), (4,1).
Sum 6: (1,5),(2,4),(3,3),(4,2),(5,1)
Sum 7: (1,6), (2,5), (3,4), (4,3), (5,2), (6,1)
Sum of 9: (3,6), (4,5), (5,4), (6,3);
Sum of 12: (6,6)
Probabilities:
4 + 4 = 8 outcomes with a sum of 5 or 9.
8/36 = 2/9 probability of a sum of 5 or 9.
12 outcomes with a sum of 6, 7 or 12.
12/36 = 1/3 probability of the sum being 6, 7 or 12.
36 - 20 = 16 outcomes in which the sum is any other value. So
16/36 = 4/9 probability of a sum of any other value.
What is the expected value of X?
2/9 probability of earning $6.
1/3 = 3/9 probability of earning $2.
4/9 probability of losing $4.
Multiplying each outcome by its probability, we find the expected value. So
[tex]E = \frac{2}{9}*6 + \frac{3}{9}*2 - \frac{4}{9}*4 = \frac{12 + 6 - 16}{9} = \frac{2}{9} = 0.2222[/tex]
The expected value of X is $0.2222.
Solve each system.
3x – y = 5
4x – 2y = 4
Answer:
x = 3
y = 4
Step-by-step explanation:
y = 3x -5
4x - 2(3x-5) = 4
4x - 6x + 10 = 4
-2x = -6
x = 3
y = 4
Which is closest to the length of AB?
A. 3.5 in.
B. 2.9 in.
C. 2.4 in.
D 1.4 in
Answer:
gohdsyuufdyiikkjhfddyiooufddtuiokhfd
Evaluate the expression using order of operations. (24+2) ÷ 2
Answer:
The answer is 13
Step-by-step explanation:
24+2=26
26÷2=13
In July, a new endoscopy and electrophysiological lab are opening up. It is projected 60 endoscopies and 5 EP studies will be performed daily. Based on preliminary work sampling to determine the time it will take to code these types of cases; it will take 5 minutes per endoscopy and 15 minutes per EP study. Calculate number of FTE needed to be hired to cover additional procedures per 7.5 hour day
Answer:
The number of FTE needed to be hired to cover the additional procedures per 7.5 day work is:
= 1.
Step-by-step explanation:
a) Data and Calculations:
Endoscopies EP Studies Total
Projected number of studies 60 5 65
Time in minutes for per study 5 15
Total time required (in minutes) 300 75 375
Full-time Employee (FTE) works 7.5-hour day or 450 minutes (7.5 * 60) per day.
b)The number of full-time employees (FTE) needed to be hired to cover the additional procedures per 7.5-day work is 1. The FTE has 450 minutes available for the additional procedures. She will only require 375 minutes. Therefore, she has extra (idle) time of 75 (450 - 375) minutes per workday.
please please i need help i will mark u brill
Answer:
Step-by-step explanation:
65 ÷ b + 8 x 4 = 20
Putting value of b = 5 in the equation
65 ÷ 5 + 8 x 4 = 20
13 + 8 x 4 = 20
13 + 32 = 20
45 = 20
Bringing like terms on one side
45 - 20 = 25
Answer:
25
Step-by-step explanation:
Replace b for 45 in the equation
65/5+8x4=
According to the rules of PEMDAS (parentheses, exponents, multiplication, division (done in order they are given) addition and subtraction) You have to solve 65/5 first and then 8x4
13+8x4=
13+32-20=25
no links help me
Parents are raising money for new playground equipment. They need $682.56 to purchase swings and receive a $200.00 donation. The remaining amount will be equally divided among 8 different student groups to raise. How much money will each student group need to raise in order to purchase the swings? Your answer should start with the $ and should only include numbers and a decimal point. *
Answer:
$53.57
Step-by-step explanation:
First, you have to subtract 200 from 628.56 to get 428.46
Then, you do 428.46/2 = 53.57, which is your answer
Hope this helps!
Step-by-step explanation: $682.56 - 200 of the donations = 482.56
The list shows the numbers of employees in the nine departments at a company.
14, 23, 6, 54, 30, 26, 17, 3, 26
What is the range of the numbers of employees in these departments?
51
18
26
23
Answer:
51
Step-by-step explanation:
largest number - smallest number
54 - 3 = 51
Answer:
51
step by step
Explanation: The range of a data set is the difference between the largest number in the data and the smallest number in the data set which in this case is 54 - 3 of 51. So the range of this data set is 51.
Find the sum: (7b
-4) + (-2b+1).
Answer:
=5b-3
Step-by-step explanation:
(7b -4) + (-2b+1).
Remove parenthesis;
7b-4+-2b+1
Group like terms;
=7b-2b-4+1
Add similar element
7b-2b=5b
=5b-4+1
Add/subtract the numbers
=5b-3
Answered by the ONE & Only #QUEEN herself aka #DRIPPQUEENMO
HOPE THIS HELPED!!!
Which of the following is a factor of the polynomial 2x^2 -
3x - 5?
Answer:
I love algebra anyways
the ans is in the picture with the steps
(hope it helps can i plz have brainlist :D hehe)
Step-by-step explanation:
the segments shown below could form a triangle. True or false
Answer:
true
Step-by-step explanation:
true
Kane's Furniture Store advertised a table at a 13% discount. The original selling price was $113, and the sale price was $100. Was the sale price consistent with the
ad? Explain
Select the correct choice below and, if necessary, fill in the answer box within your choice.
A. No, the sale price was higher than it should have been
(Round to the nearest cent) __
B. No, the sale price was 5 lower than it should have been
(Round to the nearest cent.)__
C. Yes, the sale price was consistent with the ad, because it represents a 13% discount.
Answer:
A
Step-by-step explanation:
100%=$113 what about 87( 100-13)(113×85)÷100ans is 98.31 which should be the sale price but the sale price is 100 it is $16.90 higherPlease please i need help i will mark u brill
[tex] \bf\green{7.8 \times c + 3.4 = 19} \\ \\ \bf\red{7.8 \times 2 + 3.4 = 19} \\ \\ \blue{\bf{15.6 + 3.4 = 19}} \\ \\ \bf \red{\boxed{ \underline{\underline{\pink{ 19 = 19}}}}}[/tex]
Haha, very easy... :)
Jacey has 40 pizzas to sell in the concession
stand at a basketball game. Each pizza has
been cut into 8 slices of equivalent size. In the
first hour, Jacey sold 16 3/8 pizzas. In the second
hour, she sold 18 3/4 pizzas. How many pizzas
does Jacey have left to sell?
Plz help
Answer:
the answer is 16.6 Pizzas
Step-by-step explanation:
16% of 40 is 6.4 that means she sold 6 full pizzas and 0.4 parts of one pizza
add that to 18 is 24.4 pizzas sold and 16.6 to go.
A rectangle with sides 11 cm and 9 cm has the same diagonal as a square.
What is the length of the side of the square.
Give your answer as a surd.
Answer:
the length will be 9cm because a square has equal sides it not the same as the rectangle
PLEASE HELP I WILL MARK BRAINLIEST
Part A
At most, Marc can spend $50 on sandwiches and chips for a picnic his art club is having. He already bought chips for $6 and will buy sandwiches that cost $4.50 each. Write an inequality to show how many sandwiches (s) he can buy.
Part B
Solve the inequality to show the maximum amount of sandwiches he can buy.
Which functions have a period of 2 pi
Answer:
yes
Step-by-step explanation:
56,316 divided by 6 need step by step instructions
Answer:
9,386
Step-by-step explanation:
56,316 ÷ 6 = 9,386
Hope this Helps! :)
Have any questions? Ask below in the comments and I will try my best to answer.
-SGO
Which statement best describes the association?
A.
The data shows a negative association with a trend line of y = -2x + 3
B.
The data shows a negative association with a trend line of y = -2x – 3.
C.
The data shows a positive association with a trend line of y =
x
2
+ 3
D.
The data shows a positive association with a trend line of y = 2x – 3
Answer:
c the data shows positive associations with trend line
A cereal box is 8.5 inches long, 3.5 inches wide, and 12 inches high.
What is the volume of the box?
Answer:
357 in³
Step-by-step explanation:
Sorry that the picture is rotated!
If the measure lf 2 is 83, what is the measure of 3?
Answer: 97
Step-by-step explanation:
2 and 3 form a supplementary angel, so the sum of the angles should equal 180
Victoria purchased 0.6lbs of deli ham for $4.71. What is the cost of ham per pound?
Answer:
$7.85
Step-by-step explanation:
Per pound = 1
Ratios:
[tex]\frac{4.71}{0.6} =\frac{x}{1} \\\\0.6x=4.71\\x=7.85[/tex]
8 2/3 divided by 4 1/8=2 1/10
Answer:
8 2/3 divided by 4 1/8=2 1/10 is Correct
exactly 2 10/99
Help me quickly!!! I'll try to give Brainlyest
Answer:
number 12 is A for sure
Which of the following rules best describes the matrix below
a. dilation of scale factor 2
b. reflection over the y-axis
c. reflection over the line y = x
d. translation 1 unit left and 1 unit up
Answer: D
Step-by-step explanation:
d. translation 1 unit left & 1 unit up
right on edg
Which is the better buy: 12 OZ for $1.25or 18 OZ for $1.75?
Answer:
18 OZ is better$1.75 to buy
−7x−3≤ 25
Solve the inequality and graph the solution on the line provided.
—————————————————
-12 -10 -8 -6 -4 -2 0 2 4 6 8 10 12
Pretend this is a number line
Can anyone please help me with this I really need it done, please
and you graph it from -4 to the right with close circle
Hope this help
The diameter of a circle is 10 cm find its circumference in terms on pi
Answer:
31.41593 cm
Step-by-step explanation:
Using the formulas
C=2πr
d=2r
Solving forC
C=πd=π·10≈31.41593cm
How many tenths and how many hundreds are represented in 65/100?
(by the way this is about decimals)
What is the decimal form for 65/100?
Please explain the answers
Answer:
There are 60 tenths and 5 hundreths
the decimal form is 0.65
Step-by-step explanation:
The radius of each semicircle in the composite figure is x units. The width of the rectangular part of the figure is equal to the radius.
Which expression represents the distance around the composite figure
A. 6x+2πx
B. 6x +4πx
C. 10x +2πx
D. 10x +4πx
Answer:
A) 6x + 2πx
Step-by-step explanation:
left side of figure = 4x
top and bottom flat portion of figure = 2x
2 semi-circles with radius of x is equal to 1 full circle with diameter = 2xπ
distance around = 4x + 2x + 2xπ or 6x + 2πx