Answer:
-2
Step-by-step explanation:
A negative times a negative is a positive
the radius of a circle is 3 meters what is the circle's area
Step-by-step explanation:
the answer is 28.2m²
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The PTO is selling raffle tickets to raise money for classroom supplies. A raffle ticket costs $3. There
is 1 winning ticket out of the 300 tickets sold. The winner gets a prize worth $62. Round your answers
to the nearest cent.
What is the expected value (to you) of one raffle ticket? $
Calculate the expected value (to you) if you purchase 6 raffle tickets. $
What is the expected value (to the PTO) of one raffle ticket? $
If the PTO sells all 300 raffle tickets, how much money can they expect to raise for the classroom
supplies? $
Answer:
Suppose that in a given event, there are N outcomes:
{x₁, x₂, ..., xₙ}
Such that the probabilities are:
{p₁, p₂, ..., pₙ}
The expected value is:
EV = x₁*p₁ + x₂*p₂ + ... + xₙ*pₙ
In this case, we know that each ticket costs $3.
There is 1 winning ticket out of 300 tickets, where the prize is $62.
Then we have two events, the one where you win.
x₁ = $62 - $3 = $59
With a probability:
p₁ = 1/300
The one where you don't win (and still pay for the ticket):
x₂ = -$3
p₂ = 299/300
a) Then the expected value is:
EV = ( 1/300)*$59 + (299/300)*(-$3) = -$2.79
b) The expected value is additive, this means that if you buy 6 tickets, the expected value will be equal to 6 times the expected value of a single ticket.
EV = 6*(-$2.79) = -$16.74
c) For the PTO the events are:
Winner ticket, so you lose $62 and win $3 for selling the ticket.
x₁ = $3 - $62 = -$59
p₁ = 1/300
Normal ticket, you win $3.
x₂ = $3
p₂ = 299/300
In this case the expected value is:
EV = (1/300)*(-$59) + (299/300)*$3 = $2.79
d) If the PTO sells the 300 tickets, then the expected value is 300 times the expected value for a single ticket:
EV = 300*$2.79 = $837
We should have the exact same than selling the 300 tickets:
300*$3 = $900
minus the $62 for the price:
$900 - $62 = $838
There is a difference of $1, that happens because we rounded the value of the expected value (the actual one was $2.792...)
Evaulate 9÷3[(20-7) -2to the power of 2]
Answer:
27
Step-by-step explanation:
Evaulate 9÷3[(20-7) -2to the power of 2]
9÷3[(20-7) - 2²]
9 ÷ 3 = 3
[(20-7) - 2²] = (13 - 4) = 9
Hence ;
9÷3[(20-7) - 2²]
3(9)
= 27
HELP PLSSSS I WILL GIVE A BRAINLY AND 20 POINTS!!
Answer:
y=x-4 or f(x)=x-4
Step-by-step explanation:
therefore, x=1 ,y=-3; x=2, y=-2 ; etc
i need help lololololololololololololololol
Answer:
First Blank: 4*2 = 8
Second Blank: 6*2 = 12
Step-by-step explanation:
The common ratio for the right row is the number thats given on the opposite side of it's left row times 2
Hope this helps!
Answer:
I have no clue my guess tbh 4 to 8 and 6 to 12
The volume of the box shown is 1500 in. The length is 10 inches and the width is 5 inches.
What is the height of the box?
construction company has just constructed 150 new apartments. An external inspector is hired to do the final checking before they are given way to prospective customers. Inspector at random selects 8 apartments and and counts how many defects are in each one them. He finds 7,3, 2, 1, 2, 5, 4, 4 defects. What will be Upper Control Limit for a C chart
Answer:
Upper Control Limit for a c-chart = 9.1
Step-by-step explanation:
Given - construction company has just constructed 150 new apartments. An external inspector is hired to do the final checking before they are given way to prospective customers. Inspector at random selects 8 apartments and and counts how many defects are in each one them. He finds 7,3, 2, 1, 2, 5, 4, 4 defects.
To find - What will be Upper Control Limit for a C chart ?
Proof -
Upper Control Limit for a c-chart = c bar + 3(square root of c bar)
Now,
c bar = [tex]\frac{7+3+2+1+2+5+4+4}{8}[/tex] = 3.5
∴ we get
Upper Control Limit for a c-chart = 3.5 + 3(square root of 3.5)
= 3.5 + (1.87)
= 3.5 + 5.61
= 9.1
⇒Upper Control Limit for a c-chart = 9.1
Sheila needs to hire a baby sitter for the evening.
Answer: The answer is 21
-
A summer camp has 492 campers who will be going on an outing. Estimate the number of vans needed to accommodate the entire camp if each van can comfortably
hold 12 passengers. Then calculate the actual number of vans that will be needed.
Answer: 41 vans will be needed.
Step-by-step explanation:
There are a total of 492 campers. We know that each van can hold a total of 12 passengers.
So, simply divide 492 by 12 to get the total amount of vans needed.
492/12 = 41 vans.
two x subtracted by eight
2x + 8
Answer:
(2x-8)(2x+8)
4x squared -64 is the answer
how you get it is by multiplying 2x times 2x to get 4x squared and -8 times 8 = -64
hope this helps
if this is algebra 1 then this is right
Can someone help please?
Answer
for number 6 it should be 459
Step-by-step explanation:
Remember you always multiply the numbers for a easy way or method u can use LxWxH=V. Lengh x Width x Height=Volume
Im so sorry if its wrong
DO THE ATTACHMENT PLEASE IT IS DUE IN LESS THAN 10 MINUTES, OR I GET A PHONE CALL HOME. I WILL GIVE BRAINLEST TO ANYONE WITH THE RIGHT ANSWER
The sum of two consecutive odd integers
is 540. What are the integers?
Answer:
The integers are 269 and 271.
Step-by-step explanation:
Since the sum of two consecutive odd integers is 540, to determine what are the integers, the following calculation must be performed:
Odd integer 1: X
Odd integer 2: X + 2
X + X + 2 = 540
2X + 2 = 540
2X = 540 - 2
X = 538/2
X = 269
Therefore, the integers are 269 and 271.
The bowling team at Lincoln High School must choose a president, vice president,
and secretary. If the team has 12 members, how many ways could the officers be
chosen?
Answer:
The officers can be chosen in 1320 ways.
Step-by-step explanation:
The order in which the officers are chosen is important(the first is president, second vice president and third secretary) which means that the permutations formula is used to solve this question.
Permutations formula:
The number of possible permutations of x elements from a set of n elements is given by the following formula:
[tex]P_{(n,x)} = \frac{n!}{(n-x)!}[/tex]
In this question:
3 officers from a set of 12. So
[tex]P_{(12,9)} = \frac{12!}{9!} = 1320[/tex]
The officers can be chosen in 1320 ways.
PLEASE HELP! PLEASE HELP! PLEASE HELP! QUICK
Answer:
for A plug in those numbers on the right and on the left start with 1 and move up(for example 1,2,3,4,5...)
For b the answer is 2.5x²−4.5x+1.
Step-by-step explanation:
The lateral area of a cone is 558 pi cm^2. The radius is 18 cm. Find the slant height to the nearest tenth
Answer:
31.
Step-by-step explanation:
π(18)l = 558π
l = 558/18 = 31
Therefore the answer is 31.
The sample for a study exhibits question wording bias. Select the statement that best describes the bias in the study
-Each subject in the study completes one of three different surveys. Each survey asks the same questions but using slightly different wording
-One or more questions on the survey is vague, confusing, leading, or lacks information
-The questions on the survey are short answer rather than yes or no questions
-The survey is more than 20 questions long
Answer:( B) One or more questions on the survey is vague, confusing, leading, or lacks information.
Step-by-step explanation:
Right on edge
Answer:
B. One or more questions on the survey is vague, confusing, leading, or lacks information.
Step-by-step explanation:
A school guidance counselor is researching the number of high school students who have a part-time job. She emails a survey to 500 students that contains the question "Given that studies show that holding a part-time job helps with college admissions, do you have a part-time job or want a part-time job?” Select the type of bias most likely to affect the results of the survey.
Response bias
Nonresponse bias
Question wording bias
Undercoverage bias
Answer:
C is the answer (Question wording bias)
Step-by-step explanation:
I Just did this assignment on edge
Answer:
Question wording bias.
Step-by-step explanation:
I got it correct.
Help!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Maybe try 1200?
Solve for the value of v
Answer:
4v+3+5v+6=180(being linear pair)
9v+9=180
9v=180-9
v=171/9
v=19
Step-by-step explanation:
SOMEONE PLZZZ HELP ME THIS IS DUE IN LIKE 5 MINS (I WILL MARK BRAINLIEST)
Answer:
1) x = 8
2) ∠RPS = 36°
Step-by-step explanation:
GIVEN :-
∠QPS = 180°∠QPR = 7x + 88∠RPS = 3x + 12TO FIND :-
Value of xMeasure of ∠RPSFACTS TO KNOW BEFORE SOLVING :-
In a straight line , if there are two angles such that their sum is equal to straight angle (or 180° in other words) , then those angles are known as linear pair.
PROCEDURE :-
1)
Measure of ∠QPS = 180° and it comprises of ∠QPR & ∠RPS.
⇒ ∠QPR & ∠RPS are linear pair.
⇒ ∠QPR + ∠RPS = 180°
⇒ 7x + 88 + 3x + 12 = 180°
⇒ 10x + 100 = 180
⇒ 10x = 180 - 100 = 80
⇒ x = 80/10 = 8
2)
x = 8. So,
∠RPS = 3×8 + 12 = 24 + 12 = 36°
How many fluid ounces are in 12 1/4 cups
Answer:
98 fluid ounces are in 12 ¼ cups
Answer:
The answers 98
Step-by-step explanation:
i took the quiz
What is the range of the data
Answer:
56
Step-by-step explanation:
The range of a box and whisker graph is the difference of the furthest point to the right and furthest point to the left. 76-20 = 56
Answer:
The range is 56.
Step-by-step explanation:
The range is the greatest value subtracted by the smallest value.
76 - 20 = 56.
Also, It would be FRICKIN' FANTABULOUS if I could get brainliest!!!
Help ASAP help ASAP please help me ASAP
Answer:
f = 119
e = 61
d = 90
Step-by-step explanation:
Answer:
Angle e is 61
Angle f is 119
Angle d is 90
Step-by-step explanation:
When two lines meet, the opposite angles are the same, so e is 61. On a straight line, there are 180 degrees, so angle f would be 180-61=119. Angle d uses the same method, the square in the bottom right tells you one side is 90, so for the other side you take 180-90, and you get 90.
Solve and reduce to lowest terms:
6 / 11 x 1 / 3
Answer:
2/11
Step-by-step explanation:
6/11 x 1/3 =
6/33 =
2/11
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Answer:
2/11 as a fraction
0.18 as a decimal
Step-by-step explanation:
Rewrite the given parametric equations in Cartesian from x(t) = 2t– 1 y(t) = 5t
Hi there!
[tex]\large\boxed{(-\frac{5}{3},-\frac{5}{3})}[/tex]
We can begin by setting the two expressions equal to solve for t:
2t - 1 = 5t
Subtract 2t from both sides:
-1 = 3t
Divide both sides by 3:
t = -1/3
Plug in this value of t into x(t) and y(t):
x(-1/3) = 2(-1/3) - 1 = -2/3 - 1 = -5/3
y(-1/3) = 5(-1/3) = -5/3
Thus:
(-5/3, -5/3) are the corresponding coordinates.
What is the sum of the series?
5
Σ (3k)^2
k=1
Enter your answer in the box.
Answer:
495
Step-by-step explanation:
Quadrilateral WXYZ is a rectangle, WY = 2w, and XZ = W + 78. What is XZ
Answer:
The value of XZ is equal to 156 units.
Step-by-step explanation:
Given that,
Quadrilateral WXYZ is a rectangle, WY = 2w, and XZ = w + 78
The diagonals of a rectangle are equal. So,
WY = XZ
2w = w+78
2w-w = 78
w = 78
So,
XZ = w + 78
= 78+78
= 156 units
So, the value of XZ is equal to 156 units.
Please help please help
Answer:
41
Step-by-step explanation:
The sum of the angles of a triangle is 180
Let the unknown angle be x
94+45+x = 180
Combine like terms
139 +x = 180
Subtract 139 from each side
139+x-139= 180-139
x =41
A truck driver drives at an average rate of 43 miles per hour.
At this rate, how many miles will he drive in 11 hours?
Answer: Hello: ) ✨473 miles
Step-by-step explanation:
43 mph for 11 hours = 43×11 = 473