Using the binomial distribution, it is found that the mean and the standard deviation of variable x are given as follows:
[tex]\mu = 3, \sigma = 0.87[/tex]
What is the binomial probability distribution?It is the probability of exactly x successes on n repeated trials, with p probability of a success on each trial.
The expected value of the binomial distribution is:
E(X) = np
The standard deviation of the binomial distribution is:
[tex]\sqrt{V(X)} = \sqrt{np(1-p)}[/tex]
In this problem, we have that the parameters are given as follows:
n = 4, p = 0.75.
Hence the mean and the standard deviation are given as follows:
E(X) = np = 4 x 0.75 = 3.[tex]\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{4 \times 0.75 \times 0.25} = 0.87[/tex]More can be learned about the binomial distribution at https://brainly.com/question/24863377
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If the exchange rate when converting US Dollars to ZA rands is $1=R17
How much is Zar3400 in US DOLLARS
Answer:
200 US DOLLARS
Step-by-step explanation:
Given; $1=R17
To find: How much is Zar3400 in US DOLLARS
$1=R17
R3400=3400/17 US DOLLARS
=200 US DOLLARS
Hope my answer is right thank you.
what is the volume of a cone with a diameter of 16 centimeters and a height of 15 centimeters?
Answer:
The correct answer is 8cm.
Step-by-step explanation:
Vol. Of cone= 1/3pi r²h
= 1/3×3.14× 8²×15
= 8×8×5×3.14
64× 5×3.14
= 320×314/100
=16×314=5024 cm³
Hope this helps:) Goodluck!
Answer:
The correct answer is 8cm.
Step-by-step explanation:
Vol. Of cone= 1/3pi r²h
= 1/3×3.14× 8²×15
= 8×8×5×3.14
64× 5×3.14
= 320×314/100
=16×314=5024 cm³
Hope this helps:) Goodluck!
The diagram shows line MN graphed on a coordinate plane.
Determine the slope of line MN.
Determine the length of line MN.
Answer:
slope has a gradient of -3/5
Step-by-step explanation:
change in y / change in X
-6 / 10
for the length use Pythagoras
If the discount is 40% and the sales price is $78, what is the original price
Answer:
the original price of the product is $109.20
Answer:
109.2
Step-by-step explanation:
First multiply: 78 × 40 = 3120
Then Divide by 100: 3120 ÷ 100 = 31.2
Then add 31.2 to the sales price: 78 + 31.2 = 109.2
Question 7 of 10
Which product is undefined?
A. CD, where C is a 3 x 1 matrix and D is a 1 x 2 matrix
B. NP, where N is a 2 x 1 matrix and Pis a 1 x 4 matrix
C. AB, where A is a 3 x 2 matrix and Bis a 3 x 1 matrix
D. HK, where H is a 3 x 3 matrix and K is a 3 x 1 matrix
The product that is undefined is known a CD, where C is a 3 x 1 matrix and D is a 1 x 2 matrix.
What is the matrix about?Looking at the product of matrix, note that to multiply the two matrix, the column of the first matrix needs to have the same or equal to the row of the 2nd matrix.
And in this case (propensity), it is not satisfied by the first option because:
C = 3 x 1 and
O= 2 x 1 matrix
In this case CD is therefore undefined.
So we can say that The product that is undefined is known a CD, where C is a 3 x 1 matrix and D is a 1 x 2 matrix.
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can you guys help me with this question
The first step that we must take before attempting to solve a problem is to understand what the problem is asking us to do and what is given to us to help do it. Looking at the problem statement, it asks for us to determine the area of the figure. In return, we are given the radius of the circle along with the number to use for pi.
Now that we have gathered all of the important information, we can move onto the actual calculations of the problem. Let us use the area of a circle formula to be able to capture the work.
Plug in the values
[tex]A_{circle}=radius^2*\pi[/tex][tex]A_{circle}=(14\ cm)^2*\frac{22}{7}[/tex]Now that we have the expression ready we have several steps that need to be completed in order to have our area ready. Let us start by expanding the exponent.
Expand the exponent
[tex]A_{circle}=(14)^2*(cm)^2*\frac{22}{7}[/tex][tex]A_{circle}=196*cm^2*\frac{22}{7}[/tex][tex]A_{circle}=196\ cm^2*\frac{22}{7}[/tex]Multiply
[tex]A_{circle}=\frac{196\ cm^2\ *\ 22}{7}[/tex][tex]A_{circle}=\frac{4312\ cm^2}{7}[/tex]Simplify the expression
[tex]A_{circle}=\frac{4312\ cm^2/7}{7/7}[/tex][tex]A_{circle}=\frac{616\ cm^2}{1}[/tex][tex]A_{circle}=616\ cm^2[/tex]Therefore, after creating an expression and simplifying it we were able to determine that the area of the circle that was provided with a radius of 14 cm has an area of 616 square centimeters.
Answer:
616 square centimeters
Step-by-step explanation:
Area of a circle: πr²
Given:
π = ²²⁄₇r (radius) = 14 cmSubstitute the given values into the formula:
[tex]A=\dfrac{22}{7}\times(14)^2\\\\A= \dfrac{22}{7}\times \dfrac{196}{1}\\\\A= \dfrac{4312}{7}\\\\A = 616[/tex]
Therefore, the area of the circle is 616 cm².
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What would the new coordinates be for A if the triangle was reflected over the y-axis?
triangle
(1,-1)
(-1,-1)
(-1,1)
(1,1)
Answer:
Point A:
(1, 1) -----> (-1, 1)
Step-by-step explanation:
When reflecting over the y-axis, take the opposite of the x-coordinate. That means if the coordinate is positive then it becomes negative, and if it is negative then it becomes positive.
(x, y) -------> (-x, y)
Point A:
(1, 1) -----> (-1, 1)
List the first 4 terms of a geometric sequence with the first term of 2 and a common ratio of 5.
Answer:
2, 10, 50, 250
Step-by-step explanation:
For geometric sequences, multiply the previous term by the common ratio.
Using the formula for geometric sequences [tex]a_{n} =ar^{n-1}[/tex] , with [tex]a_{n}[/tex] being the nth term (so n=4 for the fourth term), a being the first term, and r being the common ratio.
Our starting term is 2. So that is automatically the first term of the four.
Second term:
[tex]a_{2} =2*5^{2-1}=2*5^1=2*5=10[/tex]
Third term:
[tex]a_{3} =2*5^{3-1}=2*5^2=2*25=50[/tex]
Fourth term:
[tex]a_{4} =2*5^{4-1}=2*5^3=2*5*5*5=10*25=250[/tex]
What are the sides of ∠E?
Answer:
C. FE and ED
Step-by-step explanation:
The question is asking what are the sides of angle E. I've marked angle E along with its sides in the attached picture.
One side of the angle E has to be ED.
However we have multiple options for the other side. It can be called FE, CE or BE.
So the answers could be any of:
- ED and FE
- ED and CE
- ED and BE
The option that has one of the possible answers is option C: FE and ED.
Which statement about y = x^2 – 13x + 36 is true?
Describe how you would The list below shows the ages of all the presidents inaugurated in the twentieth century. Make a stem-and-leaf plot to answer the question.
42, 51, 56, 55, 51, 54, 51, 60, 62, 43, 55, 56, 61, 52, 69, 64, 46, 54
In a stem-and-leaf plot of the data, how many leaves does stem 5 have?show the number 4 and 89 on a stem-and-leaf plot.
The stem-and-leaf plots for both data set are shown in the attachment below.
Stem 5 would have 10 leaves.
How to Make a Stem-and-leaf Plot?For example, if 23, 24, 25, 28 are data points in a data distribution, 2 would be represented as a stem while 3, 4, 5, 8 would be the leaf of the stem. The data would be represented on the stem-and-leaf plot as: 2 | 3, 4, 5, 8.
Given the data, 42, 51, 56, 55, 51, 54, 51, 60, 62, 43, 55, 56, 61, 52, 69, 64, 46, 54, the stem-and-leaf plot is shown in the image attached below.
Stem 5 would have 10 leaves, as shown in the stem-and-leaf plot attached below.
The numbers 4 and 89 are represented on the second stem-and-leaf plot in the attachment below.
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Help please! Giving brainliest! Determine weather x and y show direct variation. If so, identify the constant of variation.
y=3x+2
Answer:
not direct variation
Step-by-step explanation:
You want to know if the equation y = 3x +2 represents a direct variation between x and y.
Direct variationDirect variation is characterized by the equation ...
y = kx
for a constant of variation k. The point (0, 0) is on a graph of direct variation.
Given equationThe given equation is not in this form, and cannot be put in this form. The value of y when x=0 is not 0, so the variation is not direct.
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Find the length of Side BC.Round to the nearest tenth .
A.29 B.12 C.24 D.33
A sack of pet food costs $15.50.if you buy two sacks the shop only charges $13.25 per sack.What is the percentage discount per sack when you buy two sacks?
The percentage discount per sack when you buy two sacks is 14.5%
How to determine the percentage discount?The given parameters are:
Cost per sack = $15.50Discount cost = $13.25The percentage discount is calculated as:
[tex]Percentage = \frac{Cost - Discount}{Cost} * 100\%[/tex]
This gives
[tex]Percentage = \frac{15.5 - 13.25}{15.5} * 100\%[/tex]
Evaluate
Percentage = 14.5%
Hence, the percentage discount per sack when you buy two sacks is 14.5%
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help me help me help me help me
Answer:
1. 4/12, 3/9, 2/6, 5/15
2. 4/8, 8/16, 6/12
3. 2/8, 4/16, 3/12
4. 6/8, 9/12, 4/16
Step-by-step explanation:
I'm assuming your question is about all 4 problems shown so I'll explain how to solve all of them.
1. The question is asking you to find an equivalent fraction to 1/3. The easiest way to do this is to reduce all of the options given.
To reduce fractions, first determine if the numerator and denominator share any factors. If they do, divide both terms by the shared factors until you no longer get whole numbers.
Step 1: reduce answer choices
6/16 = 3/8 (done by dividing both terms by 2)
4/10 = 2/5 (divide both by 2)
3/8 = 3/8 (fully reduced)
2/5 = 2/5 (fully reduced)
4/12 = 1/3 (divide both by 4)
5/10 = 1/2 (divide both by 5)
1/2 = 1/2 (fully reduced)
3/9 = 1/3 (divide both by 3)
2/6 = 1/3 (divide both by 2)
5/15 = 1/3 (divide both by 5)
3/8 = 3/8 (fully reduced)
3/4 = 3/4 (fully reduced)
2. This question is solved the same way as question 1.
Step 1: reduce answer choices
2/5 = 2/5
6/9 = 2/3
4/8 = 1/2
3/9 = 1/3
8/16 = 1/2
8/10 = 4/5
7/12 = 7/12
6/12 = 1/2
3. This question is solved the same way as questions 1 and 2.
Step 1: reduce answer choices
3/8 = 3/8
2/8 = 1/4
4/9 = 4/9
2/7 = 2/7
4/16 = 1/4
10/14 = 5/7
6/9 = 2/3
3/12 = 1/4
4. This question is solved the same way as questions 1, 2, and 3.
Step 1: reduce answer choices
6/8 = 3/4
4/9 = 4/9
4/6 = 2/3
9/12 = 3/4
10/12 = 5/6
6/9 = 2/3
12/16 = 3/4
7/9 =7/9
A farmer has 324 feet of fencing to make three identical adjacent rectangular pens, as shown in the picture. What dimensions of each pen will maximize the total enclosed area?
The dimensions of each pen will maximize the total enclosed area are: Length 81 feet; Width 81 feet.
Dimension of each pen
Length = x
Width = y
Area = xy
Perimeter equation is
2(x + y) = 324
x + y = 162
Substituting the perimeter equation
Area = x(162 - x)
Area = -x2 + 162x
If the zeros of the quadratic are 0 and 162, then the median will be where the maximum area occurs.
162/ 2
= 81
Hence, the dimensions are
Length = 81 feet
Width = 162 - 81 = 81 feet
Therefore the dimensions of each pen will maximize the total enclosed area are: Length 81 feet; Width 81 feet.
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i need help pls i will give brainliest
Answer:
FA: Chord
BO: Radius
CO: Radius
DO: Radius
EO: Radius
CE: Diameter
Step-by-step explanation:
Hello!
Some lines in a circle:
Chord: has two end points on the circle's perimeter, but it doesn't cross the center of the circleRadius: A line segment that starts at the center of the circle to any point on the outer perimeter. A circle has infinitely many Radii.Diameter: two end points on a circle that goes through the center. It is the measure of 2 Radii.Segment FA
This has endpoints inside the circle, but doesn't go through the center. This is a chord.
Segment BO
BO has an endpoint on the center and and an endpoint on the perimeter. This is a radius.
Segment CO
This is also a radius, it has an endpoint on the center and another endpoint on its perimeter.
Segment DO
This is a radius, it has n endpoint on the center and another endpoint on the perimeter
Segment EO
Another radius, with a an endpoint on the center and another endpoint on the perimeter.
Segment CE
A diameter. It has two endpoints on the perimeter of the circle and goes through the center of the circle.
64^2 -7y+9 what is the answer
Answer:
y=586.4
Step-by-step explanation:
64^2= 64x64 = 4096
4096-7y+9=0
4105-7y=0 1. +7y on both sides
4105=7y 2. /7 on both sides
y=586.4
*TIMID* The spinner is divided into 8 equal sections.
A spinner divided into 8 equal sections labeled gray, green, red, purple, gray, green, yellow, blue.
Which two events have the same probability?
options:
P(gray), P(green)
P(red), P(gray)
P(gray), P(purple)
P(yellow), P(gray)
An online furniture store sells chairs for $200 each and tables for $650 each. Every
day, the store can ship a maximum of 45 pieces of furniture and must sell no less than
$16000 worth of chairs and tables. If a represents the number of tables sold and y
represents the number of chairs sold, write and solve a system of inequalities
graphically and determine one possible solution.
Answer:
(a, y) = (10, 25)
Step-by-step explanation:
The two constraints give rise to two inequalities: one for the maximum number of pieces shipped, and one for the minimum revenue. A solution is a point on the graph where the inequality solutions overlap.
__
inequalitiesWe're told to use 'a' for the number of chairs, and 'y' for the number of tables.
a +y ≤ 45 . . . . . . the maximum number that can be shipped is 45
200a +650y ≥ 16000 . . . . . revenue must be at least 16000
graphThe line for the revenue equation has a slope of -200/650 = -4/13. The solution space is above this line.
The line for the quantity shipped equation has a slope of -1, somewhat steeper. The solution space is below this line.
The boundary lines combine to define a wedge-shaped solution area in the left part of the first quadrant. One point that can be found in that area is ...
(a, y) = (10, 25)
One possible solution is to sell 10 chairs and 25 tables.
Hi can you help me guys please
The height of the cylinder will be 5 units based on the information given.
How to calculate the height?The cylinder has a volume of 45π cubic meters and the radius is 3 units.
The height will be calculated thus:
Volume of a cylinder = πr²h
45π = πr²h
45π = π(3²)h
45π = 9πh
h = 45π/9π
h = 5
Therefore, the height of the cylinder will be 5. units.
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Part F What is the mean absolute deviation for Doctor A’s data set on glasses? What is the mean absolute deviation for Doctor B’s data set on glasses? Write a sentence comparing the variation of the two data sets using their mean absolute deviations.
Doctor A Doctor B
Corrective Lenses Glasses Contacts Corrective Lenses Glasses Contacts
745 643 102 763 651 112
726 634 92 736 625 111
769 670 99 735 622 113
765 658 107 759 624 135
756 636 120 748 631 117
742 624 118 756 621 135
757 641 116 765 653 112
748 655 93 761 647 114
770 649 121 768 646 122
738 629 109 761 646 115
There is more variability on glasses of doctor B's dataset than the glasses of doctor A's dataset
The doctors' mean absolute deviation on glassesThe dataset of doctor A is given as:
643 634 670 658 636 624 641 655 649 629
The dataset of doctor B is given as:
651 625 622 624 631 621 653 647 646 646
Using a statistical calculator, we have:
Doctor A
Doctor A: Mean Absolute Deviation (MAD) = 11.28Doctor B: Mean Absolute Deviation (MAD) = 12Hence, the mean absolute deviation is 11.28 for Doctor A’s and 12 for Doctor B’s data set on glasses
The variation of the two dataIn a dataset, the larger the mean absolute deviations value, the larger the variation.
By comparison, 12 is greater than 11.28
Hence, there is more variability on glasses of doctor B's dataset than the glasses of doctor A's dataset
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1. Each side of a square barn is 9 meters long.
a. What is the barn's
perimeter?
b.
What is the barn's area?
Answer:
The area and the perimeter of the square barn which has each side 9 meters long is 81 m² and 36 m.
Step-by-step explanation:
Each pepperoni slice is 78 of an inch long and costs $0.03. Exactly enough pepperoni slices are laid end to end to have a total length of 56 inches. What is the total cost of these pepperoni slices?
The total cost of these pepperoni slices is $1.92
What is the total cost of these pepperoni slices?
Each slice measures 7/8 of an inch. Here we have N slices, such that the measure of the N slices is 56 inches, then we have:
N*(7/8 in) = 56 in
Now we can find the value of N, the number of slices used:
N = (8/7)*56 = 64
And each slice costs $0.03, then the cost of the 64 slices is:
C = $0.03*64 = $1.92
The total cost of these pepperoni slices is $1.92
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I WILL GIVE BRAINLIEST here is a square
Answer:
135 degrees
Step-by-step explanation:
180-90=90/2=45
180-45=135
Hope this helped:)
Find the slope of the line: x+4y+8=0
A) -4
B) 1/4
C) -1/4
D) 4
Answer:
C) -1/4
Step-by-step explanation:
respuesta .... es la opcion c
The error term in a regression equation is said to exhibit homoskedasticty if _____. a. it has the same value for all values of the explanatory variable b. if the error term has a value of one given any value of the explanatory variable c. it has the same variance for all values of the explanatory variable d. it has zero conditional mean
The error term in a regression equation is said to exhibit homoscedasticity if it has the same variance for all values of the explanatory variable.
What is Homoscedasticity?This is a condition in which equal variance is assumed for different groups of data or variables.
The same variance will be observed in the variable in the error term of a regression equation hence option C was chosen.
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Write the expression 5x(x + 9) − 7(x + 9) in complete factored form.
A.
(x + 9)(x + 9)
B.
(5x − 7)(x + 9)
C.
(5x − 7)(x + 9)(x + 9)
D.
(5x2 + 45x)(-7x − 63)
Work out the circumference of this circle.
Give your answer in terms of pi.
Answer:
[tex]\huge\boxed{\sf C = 12\pi \ mm}[/tex]
Step-by-step explanation:
Given that:Radius = r = 6 mm
Required:Circumference = C = ?
Formula:C = 2πr
Solution:C = 2(π)(6 mm)
C = 12π mm
[tex]\rule[225]{225}{2}[/tex]
Answer:
12π mm
Step-by-step explanation:
Circumference of a circle is given by the formula :
2πr
where r is the radius
We substitute our radius value from the diagram to find our answer:
2×π×r = 2×π×6
12×π = 12π
Units will me mm since this is a length
This is our final answer since we are told to leave it in terms of pi.
Hope this helped and brainliest please
the gas tank in minas car holds 15 gallons. Her car gets between 25 and 30 miles to the gallon. If Mina fills up the gas tank and then drives until she runs out of gas, what is the least number of miles she can drive?
A. 300mi
B. 375mi
C. 405mi
D. 450mi
the lowest mileage rate is 25 miles per gallon.
Multiply 25 by 15 gallons
25 x 15 = 375 miles
Answer: B. 375 miles