How many different ways can teams of four members be formed from a
class of 20 students?
A) 5
B) 80
C) 4,845
D) 116,280
Answer:
20C4=4845
Step-by-step explanation:
On the occasion of its 10-year anniversary, AJ Inc. sells lucky draw tickets. If the customers are interested in the lucky draw contest, then they have to purchase a ticket for $15. The gift could be worth $115, $215, $315, or nothing. The probability of each event is given below. What is the value of the standard deviation
This question is incomplete, the complete question is;
On the occasion of its 10-year anniversary, AJ Inc. sells lucky draw tickets. If the customers are interested in the lucky draw contest, then they have to purchase a ticket for $15. The gift could be worth $115, $215, $315, or nothing. The probability of each event is given below. What is the value of the standard deviation
Probability 0.35 0.26 0.21 0.18
Amount gained $100 $200 $300 -$15
Option;
a) $11,143
b) $106
c) $10,200
d) $147
Answer:
the standard deviation is 106
Option b) $106 is the correct Answer
Step-by-step explanation:
Given the data in the question;
let the random variable be x
x = amount gained by customers in a lucky draw contest
so
Variance (x) = [∑(x² × P(x))] - [(∑(x × P(x))²]
so
x x² p(x) x.p(x) x².p(x)
$100 10,000 0.35 35 3,500
$200 40,000 0.26 52 10,400
$300 90,000 0.21 63 18,900
-$15 225 0.18 -2.7 40.5
TOTAL 147.3 32,840.5
Variance (x) = [∑(x² × P(x))] - [(∑(x × P(x))²]
we substitute;
Variance (x) = 32,840.5 - (147.3)²
Variance (x) = 32,840.5 - 21,697.29
Variance (x) = 11,143.21
Now Standard Deviation = √variance
so, S.D = √11,143.21
S.D = 105.56 ≈ 106
Therefore, the standard deviation is 106
Option b) $106 is the correct Answer
A point is plotted on a coordinate grid at (-3,4). How far is the point from point (0,0)?
1 unit
3 units
4 units
5 units
The distance between the point (-3, 4) and (0, 0) is 5 units.
The distance between two points A(x₁, y₁) and B(x₂, y₂) on the coordinate plane is given by:
[tex]AB=\sqrt{(y_2-y_1)^2+(x_2-x_1)^2}[/tex]
Given the point (-3, 4), its distance from the point (0, 0) is:
[tex]Distance=\sqrt{(4-0)^2+(-3-0)^2}=5\ units[/tex]
The distance between the point (-3, 4) and (0, 0) is 5 units.
Find out more on distance at: https://brainly.com/question/17273444
Which of the following statements is correct?
Systems of Equations often have one solution. Systems of Equalities also often have one solution.
Systems of Equations often have infinite solutions. Systems of Equalities often have one solution.
Systems of Equations often have infinite solutions. Systems of Equalities also often have infinite solutions.
None of the above.
Answer:
Systems of Equations often have infinite solutions.
Step-by-step explanation:
I don't know if there are 7 answers or what
What is the value of the fourth term in a geometric sequence for which ay =
10 and r = 0.5?
Answer:
1.25
Step-by-step explanation:
a = 10 and r = 0.5
The formula for calculating any term in a geometric sequence is a (the first term) times r (the common ratio) raised to the power of n - 1.
In this case n = 4, since we're looking for the fourth term.
so,
Un = ar^n-1
= ar^4-1
= ar^3
U4 = 10 × 0.5^3
= 10 × 0.125
= 1.25
The other letter to the left is X btw PLS HELP
Answer:
probably D
Step-by-step explanation:
please answer my question because it is worth a lot of points
Answer:
Triangular prism
Step-by-step explanation:
can somebody help me plz ??!!
Answer: number 1
Step-by-step explanation: an example of an irrational
number is pi. it terminate and is a decimal
write an equation in slope-intercept form for the line that has a slope of 4 and passes through the point (3,24)
Answer:
y = 4x + 12
Step-by-step explanation:
y = mx + b
'm' represents slope
'b' represents the y-intercept
use the slope and the point (3,24) as your x and y inputs to find 'b'
24 = 4(3) + b
24 = 12 + b
b = 12
y = 4x + 12
solve similar triangles advanced Pleasee help! TIA
Answer:
[tex]x = 3.5[/tex]
Step-by-step explanation:
Given
Attached Triangle
Required
Find x
To solve for x, we make use of the following equivalent ratios:
[tex]CB : BA = ED : DA[/tex]
Where:
[tex]CB = 2[/tex]
[tex]BA = 4[/tex]
[tex]ED = x[/tex]
[tex]DA = 3 + 4 = 7[/tex]
So, the expression becomes:
[tex]CB : BA = ED : DA[/tex]
[tex]2 : 4 = x : 7[/tex]
Express as fraction
[tex]\frac{2 }{ 4} = \frac{x }{ 7}[/tex]
Multiply both sides by 7
[tex]7*\frac{2 }{ 4} = \frac{x }{ 7}*7[/tex]
[tex]7*\frac{2 }{ 4} = x[/tex]
[tex]\frac{7*2 }{ 4} = x[/tex]
[tex]\frac{14}{4} = x[/tex]
[tex]3.5 = x[/tex]
[tex]x = 3.5[/tex]
In the typing world, 80 words per 5 minutes is considered acceptable.
How many words per minute is this?
Answer:
16
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
Please help on this I will mark brainlist!!!
An amount of $44,000 is borrowed for 9 years at 3% interest, compounded annually. If the loan is paid in full at the end of that period, how much must be paid
back?
Answer:
A= $52,190.93
Step-by-step explanation:
A = $ 52,190.93
A = P + I where
P (principal) = $ 40,000.00
I (interest) = $ 12,190.93
Calculation Steps:
First, convert R percent to r a decimal
r = R/100
r = 3%/100
r = 0.03 per year,
Then, solve our equation for A
A = P(1 + r/n)nt
A = 40,000.00(1 + 0.03/1)(1)(9)
A = $ 52,190.93
Summary:
The total amount accrued, principal plus interest,
from compound interest on an original principal of
$ 40,000.00 at a rate of 3% per year
compounded 1 times per year
over 9 years is $ 52,190.93.
Determine the domain of the following graph:
An online fax company, EFaxIt, has a customer plan where a subscriber pays a monthly subscription fee of $6.5 dollars and can send/receive 120 fax pages at no additional cost. For each page sent or received past the 120 page limit, the customer must pay an overage fee of $0.08 per page. The following expression gives the total cost, in dollars, to send p pages beyond the plan's monthly limit.
C= 0.06p + 12.75
Required:
If the monthly bill under this plan comes out to be $16.47, what was the total number of pages that were sent or received?
Answer:
62 pages
Step-by-step explanation:
The total cost function is given as below:
C= 0.06p + 12.75
C=total cost for printing= $16.47
0.06= variable printing cost per page
p=number of pages prinited=the unknown
12.75=monthly fixed printing cost
16.47=0.06p+12.75
16.47-12.75=0.06p
3.72=0.06p
0.06p=3.72
p=3.72/0.06
p=62 pages
Definition: This is the rate of distance traveled per unit of time, without regard to direction.
Example: 55 miles per hour on the highway
es )
Term: Type term here
Answer:
A graphic representation of velocity. Also used to represent speed. This is the rate of distance traveled per unit of time, without regard to direction. ... The slope of the line tells us the rate of change in velocity.
Step-by-step explanation:
60% of the 7,000 runners in a marathon were women. How many women ran the marathon?
Answer:
4200
Step-by-step explanation:
7000 x 0.60 = 4200
Mrs. Childress has 12 packs of pencils and 8 packs
of cap erasers. What is the FEWEST amount of each
she will need to buy in order to have an equal
number packs of both pencils and cap erasers?
Answer:
4 packs of erasers and 0 packs of pencils
Step-by-step explanation:
To minimize what she needs to buy to end up with the same number of packs of pencils and erasers, she needs to make the number of each to be equal. So the total number of packs should be 12. She all ready has 12 pencil packs and would only need to buy 4 eraser packs
Which values of f are solutions for the inequality f > 4?
If a car travels x miles/hour for 3 hours, how far car travel after 6 hours?
a) x+3+3 miles
b) x+x miles
c) 9x miles
d) 2x miles
e) 6x+3x miles
Answer:
e will be the answer for sure of miles it happene d for the past hours he traveled in and how long
Sebastian and his family picked 4 1/4 bushels of red apples and 2 5/6 of green apples at the orchard. How many more red apples were picked.
Answer:
1 5/12
Step-by-step explanation:
4 1/4- 2 5/6= 1 5/12
Also 1 5/12+ 2 5/6= 4 1/4
Line EF intersects the parallel lines AB and CD.
What is the measure of angle J in the figure below?
Answer:
d, 125
Step-by-step explanation:
Answer:
d)125
Step-by-step explanation:
Mary bought a 2 pound bag of dog food. Her dog ate 3/6 pound on Monday and 2/6 pound on Tuesday. How many pounds of dog food remain in the bag? (work it out)
Answer:
1-1/6
Step-by-step explanation:
3/6+2/6=5/6
This is out of one pound
So there is 7/6 pounds left
Or 1-1/6
I need help pleaseeeee
Answer:
The value will be positive because there are five minus signs which means negative but the there are two minus before the biggest number which means positive.
LAST ONEEE <333333 HELPP
A
Step-by-step explanation:
I'll mark brainly pls do this
Step-by-step explanation:
Verbs are read, complete, checked, work, invite. Pronouns are their, your, and them. Nouns are Classroom, Zeroes, Friday, February, friends, assignment, students, trimester. Adjectives are simple, missing.
Hope this helps! If I missed some or got some wrong, please tell me! Goodbye!
Rewrite the fraction in the sentence below as a percentage. From 100 yards away, a marksman hits 13/20 of the yard last year
Evaluate the expression . 3/4•1/2+1
Are these congruent (PLEASE HELPPP)
Answer:
all of them are congruent
Step-by-step explanation:
HOPE IT HELPS YOU
What is the value of the expression when m=4, n= -9, p= -2, and q= 12?
Answer:
i dont know
Step-by-step explanation:
B: 1
provostwendall65 if you don't know then don't answer.