Answers
Answer:
a.) [tex]mean=200.3[/tex]
b.) [tex]210[/tex] [tex]cm[/tex]
Step-by-step explanation:
a.) We are given the heights and their frequency. We can make a new set:
198, 199, 199, 199, 200, 200, 201, 201, 201, 201, 201, 202, 202
Now find the mean. The mean is found by adding all the numbers in the set, then dividing the total by the number of terms in the set. Add:
[tex]198+199+199+199+200+200+201+201+201+201+201+202+202=2604[/tex]
Now count the terms. There are 13 terms. Divide the total by the number of terms:
[tex]\frac{2604}{13}= 200.3[/tex]
The mean is 200.3.
b.) Use random values like 200, 198 etc. and add them to the total of the last set, then divide by 14 instead of 13 (because there is a new player). Do this until you get a mean of 201 with the new height:
[tex]2604+210=2814\\\\\frac{2814}{14}= 201[/tex]
For the new mean to be 201 cm, the new player has a height of 210 cm.
Finito.
To estimate the mean height of students at your college or university with 93 percent confidence and a margin of error of 1 inch, you would need to measure approximately 333 male students.
Explanation:To estimate the mean height of students at your college or university with 93 percent confidence and a margin of error of 1 inch, you need to use the formula for sample size.
The formula for sample size is:
N = ((Z * σ) / E)^2
Where N is the sample size, Z is the Z-score for the desired confidence level, σ is the standard deviation, and E is the margin of error.
In this case, the Z-score for 93 percent confidence is 1.8119 (found using a Z-table). The standard deviation is given as 2.5 inches. Substituting these values into the formula:
N = ((1.8119 * 2.5) / 1)^2
N = 18.2255^2
N ≈ 332.3782
Rounding up to the nearest whole number, you would need to measure approximately 333 male students to estimate the mean height with 93 percent confidence and a margin of error of 1 inch.
Related Questions
Answer quick for brainliest
Answers
M = slope
B = y-intercept
That means...
The slope is 2.
The y-intercept is 11.
Hope this helps, have a great day, stay safe and positive!!
:)
Answer:
x (-11/2,0) y (0, 11)
Step-by-step explanation:
What is 6/100 + 2/10
Answers
Answer:
[tex]\frac{26}{100}[/tex]
Step-by-step explanation:
[tex]\frac{6}{100}[/tex] can stay untouched, but [tex]\frac{2}{10}[/tex] has to be changed to [tex]\frac{20}{100}[/tex]. Now that they have they have the same denominator, you can add them. [tex]\frac{6}{100} + \frac{20}{100} = \frac{26}{100}[/tex], which can be simplified, which is [tex]\frac{13}{50}[/tex].
Answer:
13/50
Step-by-step explanation:
6/100 + ¹⁰⁾2/10 =
6/100 + 20/100
(6 + 20)/100
26⁽²/100
13/50
Evaluate a+3.45+b at
a
a=2.88 and b=6.02
Answer:
Answers
Answer:
12.35
Step-by-step explanation:
Plugin value in place of the variables.
Hope this helps! Good luck :-)
Find the difference (-13) - (-5)
Answers
Answer:
-8
Step-by-step explanation:
When we subtract a negative it is like adding
-13 + 5
The signs are different so we subtract and take the sign of the larger
13 -5
8
The 13 is larger so we take its sign, which is negative
-8
Answer:
-8
Step-by-step explanation:
-13 - (-5)
-13 + 5
-8
Find the area of the triangle with A = 60°, b = 11 feet, and c= 8 feet. Round to the nearest tenth.
Answers
Answer:
38.1 sq. ft
Step-by-step explanation:
angle A = 60 deg.
length a = unknown
b = 11 feet
c = 8 feet
angle B must be larger than angle C
try cos A = 8/11 ? no since cos A = 0.5 so this is not a 30-60-90 triangle
Area of triangle = (1/2)* base * height
height = ...
imagine... 8 is hypotenuse and then adjacent leg = 8*cos 60
then height = 8 * sin 60 = 8 * (root(3)/2) = 4*root(3)
Area of triangle A = (1/2)*11 feet * 4*root(3)
A =22*root(3) sq. ft. = 38.105 sq. ft = 38.1 sq. ft
Write the number 0.72 with 72 repeating as a fraction or a mixed number
Answers
Answer:
If repeating 72/99 always create the non repeating and subtract 1 from the denom. now reduce ... subtract the equations with the same digits after the decimal point 72.727272= 100x ... Which numbers from 1 to 10 could be the denominator? THANK YOU! ... Write the fraction in simplest form and equivalent decimal. asked by ...
25 answers
Step-by-step explanation:
Answer:
Step-by-step explanation:
x = 0.7272....
Two digits are repeating. so, multiply both sides by 100
100x = 72.7272.......
x = 0.7272........ {Subrtact}
99x = 72
[tex]x=\frac{72}{99}\\\\x=\frac{8}{11}[/tex]
At the end of the day, a bagel place had 4⁄5 of its bagels left over. The 4 employees each took home the same amount of leftover bagels. How much bagels did each employee take home?
Answers
Answer: 1/5
Step-by-step explanation:
Hi, to answer this question we simply have to divide the amount of bagel left over (4/5) by the number of employees (4)
Mathematically speaking:
4/5 bagel ÷ 4 employees = 1/5 bagel
In conclusion, each employee received 1/5 of bagel.
Feel free to ask for more if needed or if you did not understand something.
1. When a cannonball is fired, the equation of its pathway can be modeled by h = -1612 + 128t.
a) Find the maximum height of the cannonball.
Answers
Answer:
The maximum height of the ball is 256m
Step-by-step explanation:
Given the equation of a pathway modelled as pathway can be modeled by h = -16t² + 128t
At maximum height, the velocity of the ball is zero.
velocity = dh/dt
velocity = -32t + 128
Since v = 0 at maximum height
0 = -32t+128
32t = 128
t = 128/32
t = 4seconds
The maximum height can be gotten by substituting t = 4 into the modelled equation.
h = -16t² + 128t
h = -16(4)²+128(4)
h = -16(16)+512
h = -256+512
h = 256m
The maximum height of the ball is 256m.
Calculation of the maximum height:Since the equation should be [tex]h = -16t^2 + 128t[/tex]
Also we know that at the maximum height, the velocity of the ball should be zero
So,
[tex]velocity = dh/dt[/tex]
velocity = -32t + 128
Now
0 = -32t+128
32t = 128
t = 4seconds
Now
[tex]h = -16t^2 + 128t\\\\h = -16(4)^2+128(4)[/tex]
h = -16(16)+512
h = -256+512
h = 256m
hence, The maximum height of the ball is 256m.
Learn more about height here: https://brainly.com/question/21551182
Find the segment length indicated. Assume that lines which appear to be tangent are tangent.
Answers
9514 1404 393
Answer:
D) 15
Step-by-step explanation:
The Pythagorean theorem is helpful.
17² = 8² + ?²
289 = 64 + ?²
225 = ?²
√225 = ? = 15
The diameter is 15.
what is the domain value of 4 f(x)=2x+1
Answers
Answer:
D (all real numbers)
Step-by-step explanation:
The domain is the possible input values
The input can be any value of x, so it is all real number
Kayla rolls two fair number cubes each numbered 1 through 6. She needs to roll a sum of 9 or higher to win a game. She rolls the number cubes one at a time. She rolls a 5 with the first number cube. What is the probability that Kayla will win the game?
Answers
Yoo can someone do this for me
Answers
Answer:
Angle 5
Step-by-step explanation:
Adjacent angles share a common side and a common vertex.
NEED AS SOON AS POSSIBLE!!!
Kaylee is mixing paint for an art project. She mixes 5 ounces of green paint with every 3 ounces of white paint. She needs 50 ounces of the paint mixture. I need it as a equation
Answers
Answer:
Step-by-step explanation:
Let Kaylee used the amount of green paint in the mixture = x ounces
and the amount of white paint = y ounces
Total amount of mixture = 50 ounces
Equation will be x + y = 50 ------(1)
Ratio of green paint to the white paint in the mixture = 5 : 3
⇒ x : y = 5 : 3
⇒ [tex]\frac{x}{y}=\frac{5}{3}[/tex]
⇒ x = [tex]\frac{5}{3}y[/tex] ---------(2)
Therefore, By solving these two equations by substitution method we can get the amount of green and white paint used in the mixture.
Final answer:
Kaylee mixes paint at a ratio of 5 parts green to 3 parts white and needs 50 ounces of the mixture. By setting up a system of equations with G for green paint and W for white paint, we find that Kaylee will use 31.25 ounces of green paint and 18.75 ounces of white paint.
Explanation:
Kaylee is mixing paint for an art project. She mixes 5 ounces of green paint with every 3 ounces of white paint. She needs to create a total of 50 ounces of the paint mixture. To represent this situation as an equation, we first need to determine the ratio of green to white paint and then find out how many parts of each color we need to make up the 50 ounces.
We know that the mixture is made with 5 parts green for every 3 parts white. If we let G represent the total amount of green paint and W represent the total amount of white paint, we can use the ratio to write the equation G/W = 5/3. We also know that G + W = 50 because the total mixture is 50 ounces.
To solve this system of equations, multiply both sides of the first equation by W to get G = (5/3)W. Substitute this value into the second equation to get (5/3)W + W = 50. To find the value of W, you can solve this equation:
Combine like terms: (5/3)W + (3/3)W = (8/3)W = 50Multiply both sides by 3 to get rid of the fraction: 8W = 150Divide both sides by 8: W = 150/8 = 18.75 ounces of white paint.Now, we substitute W back into G = (5/3)W to find the amount of green paint:
G = (5/3) * 18.75 = 31.25 ounces of green paint.So Kaylee will use 31.25 ounces of green paint and 18.75 ounces of white paint to create her 50 ounces of paint mixture.
Ray uses 8 pieces of wood for each box he makes. Ray writes an equation to describe how many boxes, y, he can make with x pieces of wood. Which equation did Ray write?
Answers
Considering Ray uses 8 pieces of wood per box, the equation representing how many boxes, y, Ray can make with x pieces of wood is y = x/8. This concept originates from the field of algebra, part of middle school mathematics.
Explanation:The subject of this question is mathematics as it discusses an equation that needs to be solved, a key component in algebra. The grade level of the student asking this question sits around middle school, as learning to solve these kinds of algebraic problems are typically introduced at this stage.
If Ray uses 8 pieces of wood for each box he makes, we can say that the number of boxes, y, that Ray can make given x pieces of wood is represented by the equation y = x/8. This equation basically says that the number of boxes Ray can make (y) equals the total number of pieces of wood he has (x) divided by the number of pieces each box requires (8). So if Ray has say, 80 pieces of wood, he could make 10 boxes because 80 divided by 8 is 10.
.
Learn more about Mathematical Equation here:https://brainly.com/question/29514785
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I'll give you BRAINLIEST!!!
Who was the first Math teacher to use Pi?
Answers
Answer:
William Jones was the first Math teacher to use pi
Step-by-step explanation:
Answer:
William Jones
Step-by-step explanation:
answer quick for brainliest
Answers
Answer:
Step-by-step explanation:
y = mx + c
Here, m is the slope & c is the y-intercept
y = -3x - 1
Slope = -3
y intercept = -1
What two numbers does the square root of 161 lie between
Answers
Answer:
12 and 13
Step-by-step explanation:
use a calculator ツ
Answer:
12-13
Step-by-step explanation:
What is 8 raised to the -2/3 power? I need help
Answers
Answer:
The answer will be 0.25 or 1/4
Step-by-step explanation:
8^(-2/3)= 0.25
HOPE THIS HELPS!! PLEASE GIVE BRAINIEST!!
Write an equation in point-slope form of the line that passes through the point (2, 1) and has a slope of m= 2.
Answers
Answer:
y-1=2(x-2)
Step-by-step explanation:
Suppose you have a water-balloon launcher. The balloon is 3 ft high when it leaves the launcher. Use the equation 0 = ?16t2 + 38.8t + 3 to find the number of seconds t that the balloon is in the air.
Answers
Answer:
t = 2.5 s
Step-by-step explanation:
Suppose you have a water-balloon launcher. The balloon is 3 ft high when it leaves the launcher. Its equation is :
[tex]16t^2 + 38.8t + 3 =0[/tex]
The above equation is a quadratic equation. The general equation is :
[tex]ax^2+bx+c=0[/tex]
Here, a = 16, b = 38.8 and c = 3
The solution of quadratic equation is given by :
[tex]x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}\\\\t=\dfrac{-38.8\pm \sqrt{(38.8)^2-4\times (-16)\times 3} }{2\times (-16)}\\\\t=\dfrac{-38.8+\sqrt{(38.8)^{2}-4\times-16\times3}}{-2\times16}, \dfrac{-38.8-\sqrt{(38.8)^{2}-4\times-16\times3}}{-2\times16}\\\\t=-0.075\ s,2.5\ s[/tex]
So, at t = 2.5 s the balloon is in air.
The water balloon is in the air for approximately 2.51 seconds. We discard the negative solution as time cannot be negative.
To determine the number of seconds t that the balloon is in the air, we need to solve the quadratic equation 0 = -16t² + 38.8t + 3. This can be solved using the quadratic formula:
⇒ t = (-b ± √(b² - 4ac)) ÷ 2a,
where a = -16, b = 38.8, and c = 3.
Calculate the discriminant:⇒ Δ = b² - 4ac
⇒ (38.8)² - 4(-16)(3) = 1505.44 + 192
= 1697.44.
Find the square root of the discriminant:⇒ √1697.44 ≈ 41.21.
Apply the quadratic formula:⇒ t = ( -38.8 ± 41.21 ) ÷ -32.
Thus, we have two solutions:⇒ t₁ = ( -38.8 + 41.21 ) ÷ -32
≈ -0.076 (discarded because time cannot be negative).
⇒ t₂ = ( -38.8 - 41.21 ) ÷ -32
≈ 2.51 seconds.
The balloon is in the air for approximately 2.51 seconds.
Complete question:
Suppose you have a water-balloon launcher. The balloon is 3 ft high when it leaves the launcher. Use the equation 0 = -16t² + 38.8t + 3 to find the number of seconds t that the balloon is in the air.
Find the HCF of 220 and 88.
Answers
Answer:
44
Step-by-step explanation:
Nothing that's bigger goes into both numbers
Answer:
44
Step-by-step explanation:
220 and 88 greatest common factor is 44
Find two numbers that multiply to 20 and add to 9.
Answers
Answer:
The answer is 5 and 4
Step-by-step explanation:
The reason this is the answer is 5*4 is 20 and 5+4 is 9
i will be giving brainliest {431, 154, 254, 244, 244, 276, 263, 389, 253, 274, 205}
What is the median of the set of data?
Enter your answer in the box.
Answers
Answer:
254
Step-by-step explanation:
The median of a set of data is basically the middle number of the data when placed in least to greater order.
example:
1,2,3,4,5,
in this case (the example) the median is 3 becasue it is the middle number of the 5 numbers (thier are two numbers to the left of 3 and 2 numbers to the right of 3)
Going back to the question being asked if you put that data in order you would get a sequence of
154, 205, 244, 244, 253, 254, 263, 274, 276, 389, 431
now try eliminating a number from each end side one by one (alternating) until you have one number left.
For instance remove 154 and 431, then remove 205 and 389 etc
IF DONE CORRECTLY you would have 254 as the remaining number.
Answer:
254
Step-by-step explanation:
First, put the numbers in order.
431, 154, 254, 244, 244, 276, 263, 389, 253, 274, 205
154, 205, 244, 244, 253, 254, 263, 274, 276, 389, 431
The median of a data set is the middle number.
154, 205, 244, 244, 253, 254, 263, 274, 276, 389, 431
Best of Luck!
The function g(x) = 10.73 + 8.14(x - 1) represents the charge for parking at the airport for x number of days. Which statement best represents the formula for this charge?
Answers
Answer:
This function states that the first hour has a fixed cost of 10.75.Then, every additional hour has an additional cost of $8.14.Step-by-step explanation:
The given function is
[tex]g(x)=10.75+8.14(x-1)[/tex]
The statements that best represent the formula are:
This function states that the first hour has a fixed cost of 10.75.Then, every additional hour has an additional cost of $8.14.You can deduct that from the formula, because [tex]x[/tex] represents hour, so for [tex]x=1[/tex], we have
[tex]g(0)=10.75+8.14(1-1)=10.75[/tex]
Which means 1 hour costs $10.75.
Then, for [tex]x=2[/tex]
[tex]g(2)=10.75+8.14(2-1)=10.75+8.14=18.89[/tex]
Which means an additional hour cost $8.14 additionally.
The function g(x) = 10.73 + 8.14(x - 1) represents the linear charge for airport parking, with a starting fee of $10.73 and an additional daily rate of $8.14.
The function g(x) = 10.73 + 8.14(x - 1) represents the charge for parking at the airport for x number of days. The initial amount, when x=1, is $10.73, which can be interpreted as the base fee for the first day of parking. Each additional day costs $8.14 more than the previous day. This is a typical example of a linear equation, where the constant term represents a starting value and the coefficient of the variable represents the constant rate of change.
You randomly choose a jelly bean from a jar. The jar contains 20 jelly beans: 4 red jelly beans, 8 yellow jelly beans, 3 green jelly beans, and 5 purple jelly beans. Find the probability of selecting a red jelly bean. EXPRESS ANSWER AS A FRACTION! *
Answers
Answer:
1/5 probability
Step-by-step explanation:
1) The total number of jelly beans is 20. This will be your denominator.
2) There are 4 red jelly beans. This is your numerator.
3) Using the numerator and denominator we have, your fraction is 4/20.
4) That can be simplified into 1/5.
What is the value of y when x= 2 in the equation y= 2x - 2?
Answers
Answer:
y=2
Step-by-step explanation:
y= 2x - 2
Let x =2
y = 2(2)-2
y = 4-2
y = 2
Final answer:
To find the value of y when x equals 2 in the equation y = 2x - 2, we substitute 2 for x, giving us y = 4 - 2, which simplifies to y = 2.
Explanation:
The student asks for the value of y when x is equal to 2 in the equation y = 2x - 2. To find the value of y, we replace x with 2 in the equation and solve for y.
So we get:
y = 2(2) - 2
y = 4 - 2
y = 2
Therefore, the value of y when x equals 2 in the given equation is 2.
Your friend tells you that if you let him keep 50 of your Pokemon cards for a month, he will give you 1 card extra when he returns your cards. What is the annual rate of interest he is willing to pay for the borrowed cards? Note: Even though he only keeps your cards for a month, we can still calculate an annual interest rate
Answers
Answer:
the answer depends on which type of interest we use:
simple interest rate = 24%compound interest rate = 26.82%Step-by-step explanation:
the interest rate paid for holding the cards one month 1/50 or 2%.
to convert 2% monthly interest rate to a simple annual rate:
monthly rate x 12 months = 2% x 12 = 24%
now to convert 2% monthly interest rate to an annual rate (using compound interest):
= (1 + r)ⁿ - 1= (1 + 0.02)¹² - 1 = 1.2682 - 1 = 0.2682 or 26.82%in compound interest, earned interest earns even more interest by itself besides the interest earned by the principal.
The length of a rectangle plus its width is
13 cm. The area is 12 square cm. What are
the length and width of the rectangle?
Answers
Answer:
its 1
Step-by-step explanation:
Let's the length of rectangle x cm, then its width is (13-x) cm. since the area is 12 cm^2 we write:
(13-x)Xx=12
we get the width: x=1cm and the length is 13-12=1cm.
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Simplify 2m-5/6m-15
Answers
Answer:
Pull out like factors :
6m - 15 = 3 • (2m - 5)
Cancel out (2m - 5) which appears on both sides of the fraction line.
Final result:
1
— = 0.33333
3
Step-by-step explanation:
What is the surface area of the triangular prism? Use a net,
204 cm
216 cm
240 cm
276 cm
Answers
Answer:
936cm
Step-by-step explanation:
204+216=420+240=660+276=936