A college professor hands out a list of 10 questions, 5 of which will appear on the final exam for the course. One of the students taking the course is pressed for time and can prepare for MATH 270 Assignment 2 W. Li 2 only 7 of the 10 questions on the list. Suppose the professor chooses the 5 questions at random from the 10. a) What is the probability that the student will be prepared for all 5 questions that appear on the final examination
Answer:
21 / 252
Step-by-step explanation:
Recall : nCr = n! ÷ (n-r)!r!
The total possible outcome ; 5 questions out of 10
10C5 = 10! ÷ 5!5! = (10*9*8*7*6)÷(5*4*3*2*1) = 252
Required outcome :
All 5 questions set being from the 7 questions covered and 0 from the 3 left uncovered
7C5 * 3C0
7C5 = 7! ÷ 2!5! = (7*6) ÷ (2*1) = 21
3C0 = 3! ÷ 3!0! = 1
Probability = required outcome / Total possible outcomes
P(All 5 questions prepared for appears) :
[7C5 * 3C0] ÷ 10C5
(21 * 1) / 252
= 21 / 252
a soup can has a diameter of 6.7cm and is 10cm tall, the label was printed on a rectangular sheet of paper that is 10cm wide and how long?
Answer: 6.7 centimeters
ILL MARK YOU BRAINLEIST pls help me out with this .
what are some equations using the digits 0-9 whose soultion is 1/2.
(i need three equations)
Answer:
Step-by-step explanation:
1. x - 1 = [tex]\frac{-1}{2}[/tex]
x = [tex]\frac{-1}{2}[/tex] +1
x = [tex]\frac{1}{2}[/tex]
2. 8x - 5 =9
8x = 9 - 5
8x = 4
x = [tex]\frac{4}{8} = \frac{1}{2}[/tex]
3. 2[tex]x^{3}[/tex] = [tex]\frac{1}{4}[/tex]
[tex]x^{3}[/tex] = [tex]\frac{1}{4}[/tex] x [tex]\frac{1}{2}[/tex]
[tex]x^{3}[/tex] = [tex]\frac{1}{8}[/tex]
x = [tex]\sqrt[3]{\frac{1}{8} }[/tex]
x = [tex]\frac{1}{2}[/tex]
HELP ME PLEASE I DON'T UNDERSTAND
Answer:
For #9 it can be 4,6, or 7
#10 is angle 3
#11 is 134
#12 is 49
Step-by-step explanation:
#9 just look at the picture given and see which one is opposite from it
#10 look at which one is beside it but that the ’half‘ circles are facing each other
#11 and #12 subtract the angles they give you and see if they are next to each other and if they are that subtract the number they give you by 180-the degrees of a line
Overview
6
9
10
12
Question Progress
Homework Progress
13/60
ABC is a straight line.
A
B
С
The length of AB is four times the length of BC.
AC = 75 cm.
Work out the length of AB.
The amplitude of this graph is?
Answer:
Step-by-step explanation:
Answer is : 2
Consider the quadratic equation ax2 + bx + 5 = 0, where a, b, and c are rational numbers and the
quadeatic has two distinct zeros.
Choose the drop down below to make a correct statement.
Answer choices:
Rational
Irrational
Non-real
Answer:
irrational
Step-by-step explanation:
Please solve no explanation needed
Answer:
Option 3
Step-by-step explanation:
I know you said no explanation is needed but I'm going to give it anyways
(1) Semester 1 and 2 have the same interquartile range (12) so it can't be option 1.
(2) Semester 1 and 2 have the same median so it can't be option 2.
(3) Option 3 is true, semester 2 does have the greater mean.
(4) Semester 1 have the greater third quartile so option 4 can't be true.
what is the answer for 1 1/2 + ( - 1 / 2) ?
Answer:
5
Step-by-step explanation:
............................
Answer:
5 is the answer to your question
I have no idea what the answer so what do you guys think that answer is?
Brainlyess
In order to find the percentage of households in a town that own more than one vehicle, a survey asks 1000 randomly selected drivers at a gas station how many vehicles are owned in their household. From the results of the survey, it is reported that 67% of households in the town have more than one vehicle. Why is this report biased?
Answer options with 4 options
A.A random sample was used.
B.The sample size was too small.
C.A survey should not have been used.
D.Households without a vehicle were not surveyed.
The bias in the report is that households without a vehicle were not surveyed.
• A bias in a statistical research may be occur when the sample used is not entirely representative of the population. The research carried out above was to evaluate the number of households with more Than one car, the sampling frame should not only include the households with cars but the entire household in the town.
• The fact that the random sample were Drivers at the gas station, exempts those households without cars because those without cars cannot drive to a gas station.
• The sample is sufficiently large.
The scenario also states that, the samples were chosen randomly.
Hence, the bias is that household without cars were exempted from the survey.
Learn more : https://brainly.com/question/24393604
HElp please i really need help 100
points
Answer:
yes
Step-by-step explanation:
Answer:
you have to use your own sheet of paper. sorry
A ski resort charges Susan a flat fee of $65 to rent skis. It also charges her a daily rate of $22 for a ski lift pass to get skiers back up the mountain. Let d = the number of days a ski lift pass is rented. If Susan is
charged $175, which equation represents her situation?
Answer:
65+22d=175
Step-by-step explanation:
immigration lead to faster expansion
Someone help please, I’ll give you brainlist!
Answer:
it is a 1
Step-by-step explanation:
The total price for 4 movie tickets is $46.40 . If each ticket costs the same amount, how much does one movie ticket cost?
Answer:
$11.60
Step-by-step explanation:
4x = 46.4
x = 11.6
find the range 15,2,3,7,8,4,3,2,16,2,4
Answer:
Your range will be about 14.
Answer:
Subtract the minimum data value from the maximum data value to find the data range. In this case, the data range is
16-2= 14
14
hey could someone help me with this question immediately!! i’ll mark brainiest if it’s correct.
Answer:
10/3
Step-by-step explanation:
The answer would be 10/3. Please mark brainliest!
Answer:
10
Step-by-step explanation:
The missing number is 10
Which inequality represents the number of miles Ellie rides during her school break?
O A. m > 20
B. m > 20
C. m < 20
D. m < 20
Answer:
Hello! Your answer would be BELOW
Step-by-step explanation:
A)
D)
Hope I helped! Ask me anything if you have questions! Brainiest plz. Hope You make a 100%! Have a nice day! -Amelia♥
A cylindrical vase has a diameter of 6 inches. When completely filled, the vase holds 72π cubic inches of water.
What is the height of the vase?
Answer:
Height of cylindrical vase = 8 inches
Step-by-step explanation:
Given:
Diameter of cylindrical vase = 6 inches
Volume of cylindrical vase = 72π inches³
Find:
Height of cylindrical vase
Computation:
Radius of cylindrical vase = Diameter of cylindrical vase / 2
Radius of cylindrical vase = 6 / 2
Radius of cylindrical vase = 3 inches
Volume of cylinder = πr²h
Volume of cylindrical vase = πr²h
72π = πr²h
72π = π(3)²h
72π = 9πh
72/ 9 = h
Height of cylindrical vase = 8 inches
Lilbabyonme hahahahahahahahahahahahay
Answer: ghrhuydduyfgjrguh
Step-by-step explanation:
jcjdmsjskskms
jsjsksjsmsjdjskaowkdndnd
jsjsksisjsjdhdjeiwksjd
how to solve this plzzzzz mark you brinlast
Step-by-step explanation:
S)
4k²-1=63
4k²=63+1
4k²=64
k²=64/4
k²=16
k=√64
k=8
two people are working together. they finish their work in 12 hours. if they have a ratio of 3:2 together. how much did each of them work
Answer:
3+2=5
5u =12
1u=2.4
2u=4.8
3u=7.2
7.2 hour = 7 hours 12 min
4.8 hour = 4 hours 48 min
assuming first person work longer than the other
so first person worked 7 hours 12 min and second person worked 4 hours 48 min
What is the value of the dot on the number line?
Answer:
-2.1 to -2.4( my guess would be .3)
Step-by-step explanation:
the middle line refers to.5 so the dot since its not indicated could be referred to as-2.3
PLEASE HELP!!!!!
Let event A= The student plays Basketball
Let event B= The student plays soccer
What is P(A or B)
Answer: it’s 7/1”
Step-by-step explanation: just took it
if your good at precalculus and don't mind doing word please leave a comment down below.
Answer:
I'm in high school. Sorry I haven't started pre-calc yet. but, I really hope that you can find someone who can help. I'm just answering this for the points.
Step-by-step explanation:
Have a great rest of your day/night!
Two students' solutions to the equation 58.5 = 3.5x — 6 are shown
below. Both students made an error. Find the errors and give a
correct solution.
Answer:
18.43 is the correct answer when rounded to the hundreds place. when roumded to the tenths it is 18.4
Triangles ABC and DEF are similar. Explain why
AB
BC
DE
EF
Given an example of possible side lengths for segments AB, BC, DE and
EF. Write a coherent explanation using domain specific vocabulary to
justify why these side lengths are reasonable.
B
D
А
Answer:
Triangles ABC and DEF are similar. Explain wh
Step-by-step explanation:
They are the same shape it's just one is smaller one is bigger
You are planning a party for a group of friends. The cost of
the party will be $30 to rent the room plus $5 per person.
You have a budget of $75. Which inequality gives you the
best estimate of the number of people p that you can invite.
to your party?
Answer:
30 + 5p ≤ 75
Explanation:
This inequality describes that your total cost (which is dependent on the amount of people you invite) must be less than OR equal to $75.
Can someone please help me with this one, i would appreciate it if you can explain it to me if not then that’s okay