Answer:
71% probability that the athlete is either a football player or a basketball player
Step-by-step explanation:
We solve this problem building the Venn's diagram of these probabilities.
I am going to say that:
A is the probability that an athlete is a football player.
B is the probability that an athlete is a basketball players.
We have that:
[tex]A = a + (A \cap B)[/tex]
In which a is the probability that an athlete plays football but not basketball and [tex]A \cap B[/tex] is the probability that an athlete plays both these sports.
By the same logic, we have that:
[tex]B = b + (A \cap B)[/tex]
23% of the athletes play both football and basketball.
This means that [tex]A \cap B = 0.23[/tex]
26% are basketball players
This means that [tex]B = 0.26[/tex]. So
[tex]B = b + (A \cap B)[/tex]
[tex]0.26 = b + 0.23[/tex]
[tex]b = 0.03[/tex]
68% of the athletes are football players
This means that [tex]A = 0.68[/tex]. So
[tex]A = a + (A \cap B)[/tex]
[tex]0.68 = a + 0.23[/tex]
[tex]a = 0.45[/tex]
What is the probability that the athlete is either a football player or a basketball player
[tex]A \cup B = a + b + (A \cap B)[/tex]
[tex]A \cup B = 0.45 + 0.03 + 0.23 = 0.71[/tex]
71% probability that the athlete is either a football player or a basketball player
Answer:
71%
Step-by-step explanation:
Applying Venn's diagram
probabilty that an athlete plays either football or basketball
P ( A ∪ B ) = a + b + ( A ∩ B ) equation 1
note:
P ( A ) = a + ( A ∩ B )
( A ∩ B ) = 23% = 0.23
a = P( A ) - 0.23 = 0.68 - 0.23 = 0.45
P ( B ) = b + ( A ∩ B )
b = P ( B ) - ( A ∩ B ) = 0.26 - 0.23 = 0.03
back to equation 1
P ( A ∪ B ) = 0.45 + 0.03 +( 0.23 )
= 0.48 + ( 0.23 ) = 0.71 = 71%
P( A ) = probability of football players
P ( B ) = probability of basketball players
a = probability of playing football but not basketball
b = probabilty of playing basketball but not football
Can someone please help me
Answer:
5.83 or E
Step-by-step explanation:
Use Pythagorean theorem. 5^2+3^2=c^2 because the diameter is perpendicular it cuts the chord in half.
25+9=c^2
34=c^2
5.83
Answer:
x = 5.83.
Step-by-step explanation:
The diameter bisects the vertical chord so the right triangle has legs 3 and 5.
So x^2 = 3^2 + 5^2
x^2 = 34
x = 5.83.
That is odd - if we work it out another way we get a different answer. I guess that must be because the numbers given in the diagram are not possible.
If we use the intersecting chords theorem, we get (3+6)*3 = 27
= 5 * y where y is the other leg of the right triangle giving y = 5.4
and then this will give x = 6.18.
someone help me please
On hot, sunny, summer days, Jane rents inner tubes by the river that runs through her town. Based on her past experience, she has assigned the following probability distribution to the number of tubes she will rent on a randomly selected day.
(a) Find P(X = 75).
(b) Find P(X ≤ 75).
(c) Find P(X > 50).
(d) Find P(X < 100).
(e) Which of the probability expressions in parts (a)–(d) is a value of the CDF?
X 25 50 75 100 Total
P(X) .20 .40 .30 .10 1.00
Answer:
a) P(X = 75) = 0.30
(b) P(X ≤ 75)
= 0.2 + 0.4 + 0.3 = 0.90
(c) P(X > 50).
= 0.3 + 0.1 = 0.40
(d) P(X < 100)
= 0.2 + 0.4 + 0.3 = 0.90
(e) parts b, c & d are CDF
Answer:
the answer is C,D,B enjoy your day
Step-by-step explanation:
A large container has a maximum capacity of 64 ounces. The container is filled with 8 ounces less than its maximum capacity. Answer parts a and b.
a. To what percent of its capacity is the large container filled?
b. (I have to finish part a first)
Answer:
I believe A. is 82.352941176471%
Step-by-step explanation:
There are 30 blue cubes in the box.
What is the total number of cubes in the box
Answer:
The answers is in the problem 30 cubes
The total number of cubes are there in the box will be 75. And the table is completed below.
What is probability?Its fundamental concept is that someone will nearly surely occur. The proportion of positive events in comparison to the total of occurrences.
Then the probability is given as,
P = (Favorable event) / (Total event)
Then the value of x is given as,
x + x + 0.4 = 1
2x = 0.6
x = 0.3
The table is given below.
Color Blue Red Yellow
Probability 0.4 0.3 0.3
If the number of blue cubes is 30. Then the total number of cubes is given as,
Total cubes = 30 / 0.4 = 75
The total number of cubes are there in the box will be 75.
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Help PLEASE!
Identify the volume of a sphere with surface area 144πm2. Give your answer in terms of π.
V = 144π m3
V = 7776π m3
V = 288π m3
V = 3888π m3
A point $(x, y)$ with integer coordinates is randomly selected such that $0 \le x \le 8$ and $0 \le y \le 4$. what is the probability that $x + y \le 4$? express your answer as a common fraction.
Answer:
[tex]\frac{1}{3}[/tex]
Step-by-step explanation:
A point (x, y) with integer coordinates is randomly selected such that [tex]0 \le x \le 8 \:and\: $0 \le y \le 4$.[/tex]
The possible pairs of (x,y) are:
(0,0),(0,1),(0,2),(0,3),(0,4)
(1,0),(1,1),(1,2),(1,3),(1,4)
(2,0),(2,1),(2,2),(2,3),(2,4)
(3,0),(3,1),(3,2),(3,3),(3,4)
(4,0),(4,1),(4,2),(4,3),(4,4)
(5,0),(5,1),(5,2),(5,3),(5,4)
(6,0),(6,1),(6,2),(6,3),(6,4)
(7,0),(7,1),(7,2),(7,3),(7,4)
(8,0),(8,1),(8,2),(8,3),(8,4)
The Total Possible Outcomes n(S)= 45
The pair (x, y) that satisfies the given condition (say event A: [tex]x + y \le 4[/tex]) are:
[tex](0,0),(0,1),(0,2),(0,3),(0,4)\\(1,0),(1,1),(1,2),(1,3)\\(2,0),(2,1),(2,2)\\(3,0),(3,1)\\(4,0)[/tex]
n(A)=15
Therefore:
[tex]P(A)=\frac{n(A)}{n(S)} =\frac{15}{45} =\frac{1}{3}[/tex]
Final answer:
To find the probability that a randomly selected point with integer coordinates satisfies "x + y ≤ 4", we counted the number of qualifying points and divided by the total number of possible points. With 15 points meeting the condition out of 45 possible points, the probability is 1/3.
Explanation:
The probability question asks for the likelihood that a point (x, y) with integer coordinates will satisfy the condition "x + y ≤ 4" when 0 ≤ x ≤ 8 and 0 ≤ y ≤ 4. To solve this, we first count the total number of possible points with integer coordinates within the given ranges for x and y. Since x can take 9 values (0 through 8) and y can take 5 values (0 through 4), there are 45 possible points (9 times 5).
Next, we identify the points that satisfy the condition "x + y ≤ 4". These points are (0,0), (0,1), (0,2), (0,3), (0,4), (1,0), (1,1), (1,2), (1,3), (2,0), (2,1), (2,2), (3,0), (3,1), and (4,0), which results in a total of 15 points satisfying the condition.
The probability is therefore the number of satisfying points divided by the total number of possible points, which is 15/45 or simplified to 1/3. Thus, the probability that a randomly selected point with integer coordinates will have "x + y ≤ 4" is 1/3.
Hey pls answer my simple question. <3
Answer:
adult ticket would cost 4.5 after the 45% discount and the childs ticket would cost 2.4 after the 40% discount
(i converted 2/5 into a percentage which left me with 40%)
each time the family goes to the movies the family saves 9.1
(assuming its one adult and one child)
so 40/9.1= 4.39 and round it to 4
question A
adult ticket after discount=4.5
child ticket after discount=2.4
Question B
the family would have to go at least 4 times before they start saving money.
Step-by-step explanation:
amanda enjoys cycling. The graph shows the relationship between the number of hours she rides her bike, x, and the number of miles she covers. The equation that represents the relationship between the number of hours she rides, x, and the distance she covers, y, is a 14y = x
b y=14x c y+14=x d y= 14+x. Using the equation, the distance she would cover if she rode for 1.5 hours would be a 12.5 b 15.5 c 21 d 28 miles.
Answer:
y is 14x
Step-by-step explanation:
every time she travels 14 miles, she is on her bike for one hour
Answer:
y=14x and 21 miles
least to greatest: 7.0 , 0.07 , and 0.7
Answer:
0.07,
0.7,
7.0
That is the answer
Answer:0.07,0.7,7.0
Step-by-step explanation:
As an estimation we are told £3 is €4.
Convert €65.90 to pounds.
Give your answer rounded to 2 DP.
Answer:
49.43£
Step-by-step explanation:
Given that £3 is equal to €4
There fore one euro is equal to
£3 = €4
1 € = 3/4 £ = 0.75 £(pound)
to find value of €65.90 in terms of pound we multiply both side of above equation with 65.90
=> 65.90 € = 0.75 * 65.90 £
=> 65.90 € = 49.425£ (Answer)
65.90 € is equal to 49.43 rounded to two decimal points.
Write a single algebraic expression for the following sequence of operations. Begin with a number represented by n. Multiply by -2 add 5 to the previous expression divide the previous expression by 3 subtract 6 from the previous expression multiply the previous expression by 4 add 7 to the previous expression
Answer:
-2n-15 1/3
Step-by-step explanation:
-2n+5/3-6(4)+7
-2n+5/3-24+7
-2n+1 2/3-17
-2n-15 1/3
Help❤️
Thank you❤️❤️
Answer:
Step-by-step explanation:
B
Answer:
the answer is B
Step-by-step explanation:
Please solve this worksheet.Please
Know that quadrilaterals’ with 4 sides the degrees should all add up to 360
a. 110
(110+62+78= 250
360 - 250 = 110)
b. 66
(84+78+2b+b = 360
162+3b = 360
3b = 198
b = 66)
c. 83
For 5 sides the degrees should add up to 540)
(101+152+38+2c+c = 540
291+3c=540
3c = 249
c = 83)
d. 30
For 6 sides the degrees should add up to 720
(108+102+4d+4d+4d+5d = 720
210+17d= 720
17d = 510
d = 30)
As for the others I’ll label them 1, 2, and 3...
1. 60
(105+75+2b+b = 360
180+3b= 360
3b = 180
b = 60)
2. 78
(125+65+92+a = 360
282+a = 360
a = 78)
3. 80
(130+65+120+[2c-15]+c = 540
315+[2c-15]+c = 540
3c-15 = 225
3c = 240
c = 80
The human eye can sharply see objects within a 15 Dagrees horizontal angle either side of the direction of focus. Arlo is designing a video presentation to be shown on a cylindrical screen that viewers will stand inside. The screen circumference is 120 feet. What is the maximum width of an image that can be viewed clearly in a glance from somewhere in the viewing area?
Answer:
Maximum width of image that can be viewed clearly on the cylindrical screen is 10 ft
Step-by-step explanation:
Here we have
Circumference of screen = 2πr = 120 ft
Angle that can be viewed horizontally either side of focus = 15°
Total angle view = 30°
Size of image that can be viewed = Object within 30° of focus
Maximum width of image that can be viewed clearly = Perimeter of 30° arc section of cylinder
Maximum width of image that can be viewed clearly = 30/360×120 ft = 10 ft.
Maximum width of image that can be viewed clearly on the cylindrical screen = 10 ft.
A shirt that normally costs $35.00 is on sale for 28.00. What is the percent discount?
Answer:
$25.20
Step-by-step explanation:
$35 x 0.28
= $9.80
35-9.80
= $25.20
Answer:
20%
Step-by-step explanation:
35 x .2 = 7
35 - 7 = 28
Hope this helps & best of luck!
Feel free to message me if you need more help! :)
The cylinder’s diameter and height are both 39.2 millimeters. What is the surface area of this cylinder?
Answer:
A = 7,241.2454026112 square mm.
or exact : A = 2,304.96*π sq mm
Step-by-step explanation:
Cylinder formula: A = π* r^2 + 2 *π * r* h + π*r^2
is the surface area.
d = 2r = 39.2 mm
h = 39.2 mm
r = 19.6 mm
A = π* r^2 + 2 *π * r* h + π*r^2
A = 2* π* (19.6)^2 + 2π (19.6)*(39.2)
A = 2,413.748467537 + 4,827.496935
A = 7,241.2454026112 square mm.
or
A = 2*pi* (768.32 + 384.16)
A = 2*1,152.48* pi
A = 2,304.96*π sq mm
[tex] \qquad \qquad\large\rm{Together \: We \: Go \: Far!} \\ \qquad \qquad \sf \small{\red{♡}\:Swifties\:\red{♡}}[/tex]
Question :-
The cylinder's diameter and height are both 39.2 millimeters. What is the surface area of this cylinder?Answer :-
The surface area of the cylinder is 7238 mm².[tex] \rule{180pt}{3pt}[/tex]
Diagram :-
[tex]\setlength{\unitlength}{1mm}\begin{picture}(5,5)\thicklines\multiput(-0.5,-1)(26,0){2}{\line(0,1){40}}\multiput(12.5,-1)(0,3.2){13}{\line(0,1){1.6}}\multiput(12.5,-1)(0,40){2}{\multiput(0,0)(2,0){7}{\line(1,0){1}}}\multiput(0,0)(0,40){2}{\qbezier(1,0)(12,3)(24,0)\qbezier(1,0)(-2,-1)(1,-2)\qbezier(24,0)(27,-1)(24,-2)\qbezier(1,-2)(12,-5)(24,-2)}\multiput(18,2)(0,32){2}{\sf{19.6 \: mm}}\put(9,17.5){\sf{39.2 \: mm}}\end{picture}[/tex]
Solution :-
As per the provided information in the given question, we have been given that the diameter of the cylinder is 39.2 mm. Thus, the radius of the cylinder is 19.6 mm. The height of the cylinder is 39.2 mm. We have been asked to find or calculate the surface area of the cylinder.
To calculate the surface area of the cylinder, we will use the formula below :-
[tex]\bigstar \:\:\:\boxed{\sf{\:\:Surface \: Area_{(Cylinder)} = 2\pi r^2 + 2\pi rh \:\:}}[/tex]
Substitute the given values into the above formula and solve for surface area:
[tex]\sf:\implies Surface \: Area_{(Cylinder)} = 2\pi r^2 + 2\pi rh[/tex]
[tex]\sf:\implies Surface \: Area_{(Cylinder)} = (2)(3.14)(19.6 \: mm)^2 + (2)(3.14)(19.6 \: mm)(39.2\:mm) [/tex]
[tex]\sf:\implies Surface \: Area_{(Cylinder)} = (2)(3.14)(384.16 \: mm^2) + (2)(3.14)(768.32\:mm^2) [/tex]
[tex]\sf:\implies Surface \: Area_{(Cylinder)} = (2)(1206.2624 \: mm^2) + (2)(2412.5248 \: mm^2) [/tex]
[tex]\sf:\implies Surface \: Area_{(Cylinder)} = 2412.5248 \: mm^2 + 4825.0496 \: mm^2 [/tex]
[tex]\sf:\implies \bf{Surface \: Area_{(Cylinder)} = 7238 \: mm^2 \: (nearest\:tenth)}[/tex]
Therefore :-
The surface area of the cylinder is 7238 mm².[tex]\\[/tex]
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Have a great day! <33
The probability that a student takes a history class and a sociology class is 0.051. The probability that a student takes a history class is 0.32. What is the probability that a student takes a sociology class, given that the student is taking a history class?
0.051
0.159
0.269
0.32
Answer: 0.159
other answer is wrong i did the quiz
Which describes the effect of the transformations on the graph of ƒ(x) = x2 when changed to ƒ(x) =1/2(x − 5)2 + 7?
A) stretched vertically, shifted left 5 units, and shifted down 7 units
B) stretched vertically, shifted right 5 units, and shifted up 7 units
C) compressed vertically, shifted left 5 units, and shifted down 7 units
D) compressed vertically, shifted right 5 units, and shifted up 7 units
The graph is stretched vertically, shifted left 5 units, shifted up 7 units.
We have to determine the effect of the transformations on the graph of ƒ(x) = x^2 when changed to ƒ(x) =1/2(x − 5)^2 + 7
What is the vertex form of the quadratic equation?The vertex form of the quadratic equation is f(x) = a(x-h)^2 + k.
ƒ(x) =1/2(x − 5)^2 + 7 compare with vertex form therefore we have
a=1/2,h=5 k=7.
a=1/2 means the closer to zero the a value, the wider, so this will stretch vertically.
h=5 and this means that the graph is shifted left 5 units.
k=7 this means that the graph is shifted up 7 units.
The answer is stretched vertically, shifted left 5 units, shifted up 7 units.
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Final answer:
The graph of f(x) = x^2 undergoes a vertical compression, horizontal shift to the right by 5 units, and a vertical shift up by 7 units to become f(x) = 1/2(x - 5)^2 + 7, corresponding to option B.
Explanation:
When comparing the original function f(x) = x^2 with the transformed function f(x) = 1/2(x − 5)^2 + 7, we can analyze the effects of transformation as follows:
Vertical Compression: The coefficient 1/2 in front of (x − 5)^2 causes a vertical compression by a factor of 1/2 compared to the original function.
Horizontal Shift: The term (x − 5) inside the function indicates a horizontal shift to the right by 5 units.
Vertical Shift: The constant +7 added outside the square indicates the graph is shifted up by 7 units.
Therefore, the correct description of the transformations applied to f(x) = x^2 to obtain f(x) = 1/2(x − 5)^2 + 7 is option B: compressed vertically, shifted right 5 units, and shifted up 7 units.
How long does it take to double a $1,000 investment that pays 6.5% annual interest, compounded monthly?
Which equation can you use to solve this problem?
To the nearest year, it will take about ___
years to double the original investment.
Answer: edgen
B 2=(1+0.065/12)^12t
Step-by-step explanation:
To the nearest year, it will take about 10.7 years to double the original investment.
How to solbve for the period it would takeIn this case, the principal P is $1,000, the interest rate r is 6.5% or 0.065 (in decimal form), the number of times compounded per year n is 12 (compounded monthly), and we want to find the time t when the investment doubles, so A is $2,000.
[tex]2000 = 1000(1 + 0.065/12)^{12t}[/tex]
[tex]2 = (1 + 0.065/12)^{12t}[/tex]
ln(2) = 12t * ln(1 + 0.065/12)
t = ln(2) / (12 * ln(1 + 0.065/12))
t ≈ 10.7
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Mrs. Ting cut each pizza into 8 slices. Together the children ate 12 3 4 pizzas. If each child ate two slices of pizza, how many children were at the party?
Answer:
Hence there were total of 19 pizza and were ate among the 76 children in party.
Step-by-step explanation:
Given:
8 slices for each pizza
No of pizza ate are =12+3+4=19
To Find:
How many children were are party
Solution:
Given that each children ate 2 slices per head so
Total pizza=19
and each pizza is sliced in 8 parts so
19 pizza will give =19 *8=152 slices
Hence there are 152 total number of slices
So 2 slices/child and 152 slices
152 slices/ 2 slices/child
=(152/2)children
=76 children.
Andrew has a container with 80 game pieces that are different colors.He knows that the probability of choosing a green piece at random from the container is 0.2 and the probability of choosing a yellow piece at random from the container is 0.45. What is the total number of yellow game pieces in the container?
Answer:
36 Yellow pieces
Step-by-step explanation:
-Given the total number of pieces is 80 and the probability of choosing a yellow piece at random is 0.45.
-To find the number of yellows pieces in the container, we multiply its probability by the total number of pieces;
[tex]n_y=P(yellow)\times n\\\\=0.45\times 80\\\\=36[/tex]
Hence, the total number of yellow pieces is 36
Final answer:
To find the total number of yellow game pieces in the container, we can use the given probabilities to calculate the number of yellow pieces. By setting up equations based on the information provided, we determine that there are 8 yellow game pieces in the container.
Explanation:
Let's first calculate the total number of game pieces in the container.
Let x be the total number of yellow game pieces. The total number of game pieces is 80.
Given that the probability of choosing a green piece is 0.2 and the probability of choosing a yellow piece is 0.45:
Let the number of green pieces be (80 - x), so 0.2(80 - x) = 4 - 0.2x
Now, we know the number of yellow pieces is x, so 0.45x = 0.45x
Solving the equations, we get x = 8, thus there are 8 yellow game pieces in the container.
Can you guys answer this question ASAP, thanks will give brainliest
Answer:
An apple costs $2.25. A mango costs $1.25.
Step-by-step explanation:
Let a = price of 1 apple.
Let m = price of 1 mango.
Cameron:
4 apples + 7 mangoes ----> total $17.75
4a + 7m = 17.75
Gavin:
2 apples + 5 mangoes ----> total $10.75
2a + 5m = 10.75
We have a system of 2 equations in 2 unknowns.
4a + 7m = 17.75
2a + 5m = 10.75
We can use the elimination method to eliminate the variable a. Rewrite the first equation. Multiply both sides of the second equation by -2 and write below it. Then add the equations.
4a + 7m = 17.75
(+) -4a - 10m = -21.5
---------------------------------
-3m = -3.75
Divide both sides by -3.
m = 1.25
A mango costs $1.25.
Now we use the first equation and substitute 1.25 for m and solve for a.
4a + 7m = 17.75
4a + 7(1.25) = 17.75
4a + 8.75 = 17.75
4a = 9
a = 2.25
An apple costs $2.25.
Answer: An apple costs $2.25. A mango costs $1.25.
Answer:
2.25 ; 1.25
Step-by-step explanation:
4A + 7M = 17.75
2A + 5M = 10.75
2A = 10.75 - 5M
4A = 21.5 - 10M
21.5 - 10M + 7M = 17.75
3.75 = 3M
M = 1.25
4A = 21.5 - 10(1.25)
4A = 9
A = 2.25
Eiko is wearing a magic ring that increases the power of her healing spell by 30% without the ring her healing spell restores H health points which expressions could represent how many health points the spell restores when eiko is wearing the magic ring
When wearing the magic ring, health points increase by 30% more.
Some expressions that could represent how many health points the spell restores are:
1.3(H)
H + 0.3(H)
Hope this helps!! :)
The healing spell with the magic ring restores 130% of the health points, represented as 1.30 imes H.
If Eiko's healing spell restores H health points without the magic ring, then with the ring, the spell's power increases by 30%. Thus, the total healing power with the ring can be expressed as H + 0.30 x H, which can also be simplified to 1.30 x H. This means, with the ring, Eiko would restore 130% of the health points that the spell would normally heal without the ring.
Use the change of base formula to evaluate the logarithms to the nearest thousandth.
log36 =
log520 =
log2(1/5) =
Answer:
1.631
1.861
-2.322
Step-by-step explanation:
The value of logarithm log₅20 is 1.861.
What are logarithms?In mathematics, the logarithm is the inverse function to exponentiation. That means the logarithm of a number x to the base b is the exponent to which b must be raised, to produce x.
The given logarithms are log₃6, log₅20 and log₂(1/5).
We have change of base formula: logₐx= logₙx/logₙa
Here, log₃6 = log₁₀6/log₁₀3
= 0.7781/0.4771
= 1.6308
≈ 1.631
log₅20 = log₁₀20/log₁₀5
= 1.3010/0.6989
= 1.8614
≈ 1.861
log₂(1/5) = log₁₀(1/5)/log₁₀2
= -0.6989/0.3010
= -2.3219
≈ -2.322
Therefore, the value of logarithm log₅20 is 1.861.
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Of 58 cities, 3 have a lake and 23 have a river running through them. What fraction of these 58 cities have a lake or a river running through them?
Out of 58 cities, 26 have either a lake or a river, which simplifies to a fraction of 13/29 of the cities having one of these features.
Explanation:To find the fraction of 58 cities that have either a lake or a river running through them, we need to determine how many cities have at least one of these features. It is important to check if any city has both a lake and a river, but since the question does not provide this information, we will assume that there are no cities that have both. The question tells us that 3 cities have a lake and 23 have a river. We simply add these counts together to find the total number of cities with at least one water feature.
The calculation would be:
3 (cities with a lake) + 23 (cities with a river) = 26 (cities with a lake or a river)
To find the fraction of the 58 cities that have a lake or a river, we divide the number of cities with a water feature by the total number of cities:
26 (cities with a lake or a river) / 58 (total cities) = 13/29 (simplified fraction).
Final answer:
Of the 58 cities, 26 have either a lake or a river, which means the fraction of cities with a lake or a river is 26/58.
Explanation:
To determine what fraction of the 58 cities have a lake or a river running through them, we must consider that the question does not specify whether some cities might have both a lake and a river. Assuming that the cities with lakes and the cities with rivers do not overlap, we simply add the number of cities with each feature.
There are 3 cities with a lake and 23 with a river. To find the total number of cities with either a lake or a river, we add these two numbers together:
3 (cities with a lake) + 23 (cities with a river) = 26 (cities with a lake or a river).
Now, to find the fraction of the 58 cities that have a lake or a river, we divide the number of cities with water features by the total number of cities:
26 / 58 = fraction of cities with a lake or a river running through them.
Find the area of the circle. Round your answer to the nearest tenth. PLEASE HELP QUICK!!!
What is the volume of the triangular prism?
A) 12 cm3
B) 18 cm3
C) 24 cm3
D) 48 cm3
Find the area of the triangle side, then multiply by the length of the prism.
Area of triangle = 1/2 x height x base
Area = 1/2 x 2 x 3 = 3 square cm
Volume = 3 x 4 = 12 cubic cm.
Answer is A) 12 cm^3
Please find the value of x
Answer:
x = 27°
Step-by-step explanation:
You know that both sections together add up to 180°, so you want to set up an equation:
2x + 99 + x = 180
3x + 99 = 180
3x = 81
x = 27°
Papa Fred's Pizza has found that the menu time to deliver a pizza is 21.2 minutes with a
standard deviation of 6.1 minutes. They want to have a guaranteed delivery time. In order to
deliver 99% within the guaranteed time you need to find the time represented by the 99
percentile. What is this value?
Answer:
That time is 35.4 minutes.
Step-by-step explanation:
The mean time of delivery follows a Normal Distribution pattern.
So we need to apply Z-scores to find out.
99% confidence in delivery time means P(z > value) = 0.01 = 1%
So z > 2.325
so. Pr [ (x - 21.2) / 6.1 > 2.325 ] = 1%
so x > 2.325*6.1 + 21.2
x > 35.3825 minutes would be out of the 99th percentile
Final answer:
To calculate the 99th percentile of pizza delivery times, use the z-score corresponding to a 0.99 probability and apply the formula X = μ + (z * σ), where X represents the delivery time, μ is the mean, and σ is the standard deviation.
Explanation:
The student is asking for the 99th percentile of the pizza delivery time, given that the times are normally distributed with a mean of 21.2 minutes and a standard deviation of 6.1 minutes. To find the 99th percentile, one would typically use a z-score table or a statistical software to find the z-value that corresponds to the 0.99 probability. Once the z-score is found, the formula X = μ + (z * σ) is used to calculate the specific time that corresponds to the 99th percentile, where X is the delivery time, μ is the mean delivery time, σ is the standard deviation, and z is the z-score. Since the student is asking for a guaranteed delivery time that covers 99% of the deliveries, this time will be longer than the average to account for the variability represented by the standard deviation.