Answer:
If you look it up it should be there
Step-by-step explanation:
google :\
It is known that 10% of the 9-year old children in a town have three siblings. Fifteen 9-year old children are selected at random. Find the probability that more than 3 of these selected children have three siblings (round off to second decimal place).
Using the binomial distribution, it is found that there is a 0.0555 = 5.55% probability that more than 3 of these selected children have three siblings.
What is the binomial distribution formula?The formula is:
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
The parameters are:
x is the number of successes.n is the number of trials.p is the probability of a success on a single trial.In this problem, for the parameters, we consider that:
10% of the 9-year old children in a town have three siblings, hence p = 0.1.Fifteen 9-year old children are selected at random, hence n = 15.The probability that more than 3 of these selected children have three siblings is given by:
[tex]P(X > 3) = 1 - P(X \leq 3)[/tex]
In which:
[tex]P(X \leq 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)[/tex]
Then:
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 0) = C_{15,0}.(0.1)^{0}.(0.9)^{15} = 0.2059[/tex]
[tex]P(X = 1) = C_{15,1}.(0.1)^{1}.(0.9)^{14} = 0.3432[/tex]
[tex]P(X = 2) = C_{15,2}.(0.1)^{2}.(0.9)^{13} = 0.2669[/tex]
[tex]P(X = 3) = C_{15,3}.(0.1)^{3}.(0.9)^{12} = 0.1285[/tex]
[tex]P(X \leq 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = 0.2059 + 0.3432 + 0.2669 + 0.1285 = 0.9445[/tex]
P(X > 3) = 1 - 0.9445 = 0.0555
0.0555 = 5.55% probability that more than 3 of these selected children have three siblings.
More can be learned about the binomial distribution at https://brainly.com/question/24863377
jerry has 840 cubic inches 6 in height and 10 width, what is the length?
Answer:
solve
Step-by-step explanation:
do 840 divided by 60
Answer:
14 in
Step-by-step explanation:
cubic means three
take the 2 you do have:
6 and 10
multiply them:
60
divide 840 by 60 to get the third:
14
A cylinder has a height of 23m and a volume of 18488m^3 what is the radius of the cylinder. Round your answer to the nearest whole number
Answer:
Radius=16m
Step-by-step explanation:
It is given that A cylinder has a height of 23 m and a volume of 18,488 m³. then, the volume of the cylinder is given as:
Substituting the given values, we get
≈
Thus, the radius of the cylinder will be 16m.
Answer:
Radius = 16m
Step-by-step explanation:
It is given that A cylinder has a height of 23 m and a volume of 18,488 m³. then, the volume of the cylinder is given as:
[tex]v=\pi r^{2} h[/tex]Substituting the given values, we get
[tex]18488=3.14(r^{2} )(23)[/tex]
[tex]18488=72.22(r^{2} )[/tex]
[tex]r^{2} =255.99[/tex]
[tex]r=\sqrt{255.99}[/tex]
[tex]r=15.99[/tex]
[tex]r=16m[/tex]
Thus, the radius of the cylinder will be 16m.
what is the amplitude and period of f(t) = sin2t
The equation [tex]f(t) = \sin(2t)[/tex] is an illustration of a sine function
The amplitude of the function is 1The period of the function is [tex]\pi[/tex]How to determine the amplitude?The equation of the sine function is given as:
[tex]f(t) = \sin(2t)[/tex]
A sine function is represented as:
[tex]f(t) = A\sin(B(t + C)) + D[/tex]
Where
A represents the amplitude
By comparison;
A = 1
Hence, the amplitude of the function is 1
How to determine the period?In (a), we have:
[tex]f(t) = A\sin(B(t + C)) + D[/tex]
Where the period is:
[tex]T = \frac {2\pi}B[/tex]
By comparison;
B = 2
So, we have:
[tex]T = \frac {2\pi}2[/tex]
[tex]T = \pi[/tex]
Hence, the period of the function is [tex]\pi[/tex]
Read more about sine wave functions at:
https://brainly.com/question/23214084
Answer:
A on edge
Step-by-step explanation:
Your teacher decides to split the class into 4 equal groups with no more than 5 student in each group. Write and solve an inequality to represent the number of students in the class.
( I got c/4≤5. I got 20 students too. Am I correct?) * c represents class
Answer:
Then there is at most 20 students = 4 groups x 5 students per group
N <=20
Step-by-step explanation:
mark me brainliest!!
Use a difference identity to find the exact value of tan 15.
Answer:
[tex]2-\sqrt{3}[/tex]
Step-by-step explanation:
[tex]tan15 = tan(45 - 30)=\frac{\tan{45}-\tan{30}}{1+\tan{45}\tan{30}}\\\\=\frac{1-\frac{1}{\sqrt{3}}}{1+\frac{1}{\sqrt{3}}}\\\\\\=\frac{\sqrt{3}-1}{\sqrt{3}+1}\\\\\\[/tex]
[tex]=\frac{(\sqrt{3}-1)^2}{3-1}\\=\frac{3+1-2\sqrt{3}}{2}\\=2-\sqrt{3}[/tex]
a rectangular tub has a perimeter of 16 feet. if the length of the tub is 6 feet, what is the width of the tub?
Answer:
The width is 2
Step-by-step explanation:
The formula is P= (L times W)x2. 6x2=12. 16-12=4. 4/2=2. The width is 2
Jen was making cake pops for the bake sale. After 3 hours, she had completed half of the work. She called Maryna for help and together they finished everything in half an hour. How long would it take Maryna to finish the job alone if she replaced Jen after Jen baked for 3 hours?
I'm going to assume in an hour and a half, correct me if I'm wrong
Answer:
It will take 0 hours and 36 minutes
Step-by-step explanation:
please help i will mark braineist. read the following sentence. She ran towards them her hat flew off her curls bounced as she charged toward the soldiers trying to invade her home What type of error does this example contain? A
misplaced participial phrase
A fragment missing a subject
A fragment missing a verb
Arun-on sentence
An angle measures 6° less than the measure of its supplementary angle. What is the
measure of each angle?
Answer:
The angles are 87 degrees and 93 degrees.
Im not sure if its correct-
Step-by-step explanation:
x+(x-6)=180
2x=174
x=87
Help mat math Math ASAP
Answer:
(11, 2 )
Step-by-step explanation:
3y + 2x = 28 → (1)
x = 5y + 1 → (2)
substitute x = 5y + 1 into (1)
3y + 2(5y + 1) = 28 ← distribute parenthesis on left side and simplify
3y + 10y + 2 = 28
13y + 2 = 28 ( subtract 2 from both sides )
13y = 26 ( divide both sides by 13 )
y = 2
substitute y = 2 into (2)
x = 5(2) + 1 = 10 + 1 = 11
solution is (11, 2 )
What is the percentage chance of choosing someone who owns a cat from this group?
Answer:
Answer: 40% out of 100% Explanation: I did the math
Answer:
There is a 36% chance of choosing someone who owns a cat.
Step-by-step explanation:
4 out of the 11 people listed own cats. So you need to divide 4 by 11.
4/11 = 0.36 (rounded to the nearest tenths)
Hope that helps!
radius of a circle with a circumference of 20pi
Answer:
3.14 cm²
Explanation:
1.) 2πr = 20π
2.) r =20/2
3.) r = 10 cm
4.) The radius of the circle = 10 cm
5.) The area = πr2 ≈ 3.14 ×(10)² = 3.14 ×(100) = 314 cm²
6.) 3.14 centimeters squared
HELPPPPP
what is the distance, to the nearest unit, between your house and the subway stop?
Answer:
9
Step-by-step explanation
brainlypatrol keep deleting my answers
Simplify -1/2(32x-40)+(20x-4)
-4x - 20
Step-by-step explanation:
-1/2 (32x - 40) + ( 20x - 40)
open the bracket
-1/2 × 32x = -16x
-1/2 × -40 = 20
.
. . -16x + 20 +20x - 40
collect like term
-16x + 20x + 20 - 40
4x - 20
simplify = 4(x-5)
The graph of y=mx is given by the table. Find the coefficient m and fill in the table:
x 8 6 4 0 −2 −8 −10
y 8
find the blanks
QUICKLY PLEASE
Answer:
6=6
4=4
0=0
-2=-2
-8=-8
-10=-10
Square pyramid surface area?
Answer:
576 cm^2
Step-by-step explanation:
16^2 + 2 x 16 x 10
256 + 32 x 10
256 + 320
= 576
Simplify the expression (64)2.
Answer:
See below.
Step-by-step explanation:
(64)2
64*2
128
-hope it helps
Answer:
128
Step-by-step explanation:
it's multiplication(64)2
64*2
128
Solve each equation
4) -2x = 28
Answer:
X=-14
Step-by-step explanation: I did it before
Micaela answered 158 questions correctly on her multiple choice math final that had a total of 200 problems. What percentage of questions did Micaela answer correctly on the final exam?
Answer:
79%
Step-by-step explanation:
Based on the given conditions, formulate: 158 ÷ 200
Reduce the fraction: 79/100
Reduce the fraction:
Rewrite a fraction with denominator equals 100 to a percentage: 79%
Answer: 79%
A) 4+10+8=
B) 5-9+1=
C) -8-2+3=
D) -15+8-7=
E) 24+6-12=
F) 18-3-21=
Answer:
See below.
Step-by-step explanation:
A) 4 + 10 + 8 = 22
B) 5 - 9 + 1 = -3
C) -8 - 2 + 3 = -7
D) -15 + 8 - 7 = -14
E) 24 + 6 - 12 = 18
F) 18 - 3 - 21 = -6
Do exactly what it’s says please!
Answer:
p(1+r/100)^t where P is the amount of money to be invested ,r is the rate at which its compounded annually and t is the duration or period NOTE 1is constant
9) A store is selling t-shirts for $8
each. If Britt buys 15 shirts how
much will she pay for them? ?
Answer:
$120 before tax.
Step-by-step explanation:
8 * 15 = 120
Answer:
She will pay $120 for 15 shirts
Step-by-step explanation:
multiply 15 x 8 = 120
Hope this helps:)........if not then sorry for wasting your time and may God bless you:)
Graph the line that passes through the points (0, -5) and (5, 1) and
determine the equation of the line.
y
10
9
00
7
6
5
4
Answer:
y = 10/1x - 5
Step-by-step explanation:
y=mx+b
m=slope b=y-intercept
therefore
y=10/1x -5
(10/1 is a fractions just too lazy to make it a fraction on here)
The cost of a concert ticket last week was $60.00. This week a concert ticket is $75.00. What is the percent increase of the ticket from last week to this week
Answer: The increase was by 25 %. (125% change)
Step-by-step explanation: 75-60 is 15, so the difference was that it increased by $15. 15 divided by 60, is .25, or 25%. Meaning it increased by 25%, or there was an 125% change.
mPQ = 113°. What is mZPOQ?
Enter your answer in the box.
113°
I NEEDHELP ASAPPPPP
Determine if the sequence below is arithmetic or geometric and determine the
common difference / ratio in simplest form.
20, 10, 5,
Answer:
Common ratio = 1/2.
G. S.
Step-by-step explanation:
10/20 = 1/2 and 5/10 = 1/2 so its Geometric.
What information do banking institutions use to help detect fraudulent
transactions?
A. Local business' sales forecasts
B. National financial trends
C. Internet search engine statistics
D. Historical transaction data
The information that banking institutions use to help detect fraudulent
transactions is Historical transaction data.
How do banks protect their customer information?Banks do use some kind of Encryption to protect their customer's information. Through that, a person's transactions and personal information are protected online via encryption software.
Note that a lot of times, fraudulent activities do occur and as such banks or Financial institutions through the use of data and data analytics of the transaction process will help them better know what occurred.
Learn more about banking from
https://brainly.com/question/25664180
What is the first multiple of 191
Answer:
382
Step-by-step explanation:
To find the first multiple, we can just add 191 to itself.
191 + 191 = 382
Best of Luck!
Step-by-step explanation:
382
..................
While riding her bike to the ocean and back home 7 times, Michelle timed herself at 54 min, 55 min 50 min, 48 min 42 min, 50 min, and 61 min. She had set a goal of averaging 51 minutes for her rides. How many minutes will she need to spend on her eighth ride to attain her goal?
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