The formula for determining the volume of a cylinder is expressed as
\(\begin{gathered} \text{Volume = pie }\times radius^2\times height \\ \end{gathered}\)We are given that
volume = 367
radius = 3
pie is a constant whose value is 3.14
Therefore
\(\begin{gathered} 36\times3.14\text{ = 3.14}\times3^2\times h \\ 113.04\text{ = 28.26h} \\ \text{Dividing both sides by h, it becomes} \\ \frac{28.26h}{28.26}=\frac{113.04}{28.26} \\ h=4 \end{gathered}\)The value of the height, h is 4 cm
You have 400,000 saved for retirement.Your account earns 9% interest.How much will you be able to pull out each month,If you want to be able to take withdrawals for 20 years?
Answer:
100 POINTS PLEASE HELP FOR ALL QUESTIONS WILL REPORT IF YOU JUST TAKE THE POINTS AND NOT ANSWER THE QUESTION
Step-by-step explanation:
How many square feet is a 20×20 room?
Answer:
400 square feet
Step-by-step explanation:
Graham wrote the system of equations.
6x−8y=−16y=34x+8
What is true about the system of equations that Graham wrote?
A
It has no solution.
B
It has 1 solution.
C
It has 2 solutions.
D
It has infinitely many solutions.
Answer:
B
Step-by-step explanation:
6x -8y = - 16y
6x = -8y
8y = 17x + 4
-8y = -17x - 4
6x = -17x - 4
23x = -4
x = -4/23
Suppose a sunglass manufacturer determines the demand function for a certain line of sunglasses is given by p = 50- (1/4,000) x, where p is the price per pair and x is the number of pairs sold. The fixed cost of producing a line of sunglasses is $25,000 and each pair of sunglasses costs $3 to make. How many sunglasses should be produced to maximize profit? (A) 100,000 sunglasses (B) 87,000 sunglasses (C) 94,000 sunglasses (D) 200,000 sunglasses
(E) 188,000 sunglasses
The demand function for a specific line of sunglasses is determined by a sunglass manufacturer as p = 50- (1/4,000) x and the number of sunglasses produced to maximize profit is 94,000 sunglasses.
Profit is the difference between an economic entity's revenue from outputs and the sum of its input costs. Total income minus total expenses, including both direct and indirect expenses, equals total cost.
Then, the profit for the given data is,
\(\begin{aligned}\text{Profit}&=\text{Revenue - Cost}\\&=\left(50 - \frac{1}{4,000}x \right)x - (25,000 + 3x)\\&= 50x - \frac{1}{4,000} x^2 - 25,000 - 3x\\&= - \left(\frac{1}{4,000} \right)x^2 + 47x - 25,000\end{aligned}\)
Finding the value of x that satisfies this expression will help us maximize profit. We can achieve this by taking the derivative of the profit function and setting it to zero. Then, solve for x.
\(\begin{aligned}\frac{d\text{Profit}}{dx}&= -\left(\frac{1}{2,000}\right)x + 47 \\0&= -\left(\frac{1}{2,000}\right)x + 47 \\\frac{1}{2000}x&=47\\x&=94,000\end{aligned}\)
The required answer is 94,000 sunglasses and the correct option is option C.
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Find a unit vector that has the same direction as the given vector. −6i + 2j − k
Using the general formula to get unit vectors in the same direction as a vector V:
v = V/|V|
We will get the unit vector:
v = (−6i + 2j − k)/√41
How to find a versor along the given vector?Here we want to find a versor (also called a unit vector) that has the same direction as the vector:
V = −6i + 2j − k
The general way to find a unit vector, let's call it v, for a given vector V, is:
v = V/|V|
Where |V| is the magnitude of the vector.
In this case, the magnitude will be:
|V| = √( (-6)^2 + 2^2 + (-1)^2) = √( 36 + 4 + 1) = √41
Then the unit vector that has the same direction as the given vector is:
v = (−6i + 2j − k)/√41
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PLEASE NEED ANSWERS!
Answer: 1
Step-by-step explanation:
A rectangular room is
1.5
times as long as it is wide, and its perimeter is
35
meters. Find the dimension of the room.
The length is :
meters and the width is
meters.
The dimensions of the room are approximately 7 meters by 10.5 meters.
The length is 10.5 meters and the width is 7 meters.What are dimensions?In Mathematics, dimensions are referred to as measures of size such as length, width, and height of an object or a shape. A rectangle has length and width as its dimensions that define the area of a rectangle.
Let's start by using algebra to represent the information given in the problem. Let x be the width of the rectangular room, then the length is 1.5 times the width or 1.5x.
The perimeter of a rectangle is the sum of the lengths of all its sides, which can be expressed as:
\(\text{Perimeter} = 2(\text{length} + \text{width})\)
Substituting the values we have for length and width, we get:
\(\rightarrow35 = 2(1.5\text{x} + \text{x})\)
Simplifying the equation, we get:
\(\rightarrow35 = 2(2.5\text{x})\)
\(\rightarrow35 = 5\text{x}\)
\(\rightarrow\text{x}=\dfrac{35}{5}\)
\(\rightarrow\bold{x\thickapprox7}\)
So the width of the room is 7 meters.
To find the length, we can substitute x into the expression we have for the length:
\(\rightarrow\text{Length} = 1.5\text{x}\)
\(\rightarrow\text{Length} = 1.5(7)\)
\(\rightarrow\bold{Length=10.5}\)
So the length of the room is 10.5 meters.
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to prove that there is a unique element x such that p(x) is true is the same as showing which of these statements is true?
To prove that there is a unique element x such that p(x) is true, the predicate logic statement says that there is at least one element x such that P(x) is true and for every element y such that y is not identical to x, P(y) is false.
How to explain the logic statementThe predicate logic statement says that there is at least one element x such that P(x) is true and for every element y such that P(y) is true, x is identical to y. This is exactly the meaning of there being a unique element x such that P(x) is true.
Here, there is at least one element x such that P(x) is true. This is exactly that meaning of there being a unique element x such that P(x) is true.
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Please help!!
What is the correlation between the number of hours studying and the number of mistakes made on the exam?
Answer:
Negative correlation
Step-by-step explanation:
Porter drove due east 20 miles on Interstate 23, then due south 23 miles on Interstate 77. To the nearest hundredth of a mile, how far was he from his starting point?
A. 30.48 mi
B. 26 mi
C. 11.36 mi
D. 43 mi
Answer: D. 30.48 miles
Step-by-step explanation:
You basically use Pythagorean Theorem!
a2 + b2 = c2
Square root 20^2 +23^2
=√20^2 + 23^2
=20 x 2 + 23 x 2
= 929
And round it=
30.48 miles.
Jean is working out the total cost for her new mobile phone plan with an 18 month contract. The provider charges an initial connection fee of $75. The plan costs $25 a month for the first six months, and then $35 a month for the remaining 12 months. How much will Wendy pay in total for her 18 month contract?
Answer: $35x 12= $420 so that's for the remaining 12 months. $420+ 75=$495. The next step is to multiply $25 and 6. $25x6= $150.
$495+$150= $645 per month.
Step-by-step explanation:
using the line of best fit
The monthly cell phone bill when shared data equals zero is given as follows:
$26.
How to define a linear function?The slope-intercept representation of a linear function is given by the equation presented as follows:
y = mx + b
The coefficients of the function and their meaning are described as follows:
m is the slope of the function, representing the change in the output variable y when the input variable x is increased by one.b is the y-intercept of the function, which is the initial value of the function, i.e., the numeric value of the function when the input variable x assumes a value of 0. On a graph, it is the value of y when the graph of the function crosses the y-axis.The intercept of the line in this problem is given as follows:
b = 26.
Hence $26 is the monthly cell phone bill when shared data equals zero.
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can someone please help me lol
Answer:
C
Step-by-step explanation:
Answer:
A x√2/2
hope it helps and your day will be full of happiness
The difference between two positive numbers is 40 and the ratio of these integers is 1:3.Find the integers.
Answer:
A:B= 1:3
let A=1x,B=3x
A+B = x+3x
x+3x = 40
4x = 40
x=10
A=1(10)=10
B=3(10)=30
Step-by-step explanation:
Dont really know how to explain it well
Which problem can be solved by performing this multiplication?
3/4×8/9
Responses
Evan practiced piano this week for 3/4 hour. Last week he practice for8/9 hour. How much longer did Evan practice last week than this week?
Jada rode her bike 3/4 mile. Sarah rode her bike 8/9 the distance that Jada rode her bike. How far did Sarah ride her bike?
Amelie drove 3/4 mile. She then drove another 8/9 mile. How many miles did she drive in all?
Three out of 4 containers hold lemonade. Each container holds 8/9 quart of lemonade. How much lemonade do the containers all hold?
The multiplication 3/4×8/9 can be used to address the problem in response (B). which is the correct answer that would be an option (B).
What is the Multiplication operation?In mathematics, Multiplication operations perform Multiplying values on either side of the operator.
For example 4×2 = 8
As per option (B),
Jada rode her bike for 3/4 mile. Sarah rode her bike 8/9 the distance that Jada rode her bike.
Sarah rides her bike = Sarah rode (8/9) of the (3/4) that Jada rode.
Sarah rides her bike = 3/4 × 8/9
Therefore, this problem can be solved by performing the above multiplication.
Hence, the correct answer would be an option (B).
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Heyyy guysss i need to someone to ask my math questions pleasee help
Part B
Complete the table to find the rule for the rotation, the coordinates of trapezoid PQRS, and the coordinates of the rotated image, trapezoid P′Q′R′S′. **SEE PIC BELOW**
Answer:
Original Coordinates New Coordinates
(x, y) (x ,y )
P(6 , -4) P′(3 ,2 )
Q(2 ,-2 ) Q′(1 ,1 )
R(2 ,-6 ) R′(1 ,3 )
S(6 ,-6 ) S′( 3,3 )
Consider the following loan. Complete parts (a)-(c) below.An individual borrowed $67,000 at an APR of 3%, which will be paid off with monthly payments of 347$ for 22 years.a. Identify the amount borrowed, the annual interest rate, the number of payments per year, the loan term, and the payment amount.The amount borrowed is $____ the annual interest rate is ____, the number of payments per year is _____, the loan term is _____ years, and the payment amount is _____$ b. How many total payments does the loan require? What is the total amount paid over the full term of the loan?There are ____ payments toward the loan and the total amount paid is ____$ c. Of the total amount paid, what percentage is paid toward the principal and what percentage is paid for interest?The percentage paid toward the principal is _____% and the percentage paid for interest is ____%.(Round to the nearest tenth as needed.)
b) There are 12 payments per year for 22 years; multiply 12 by 22 to get the total number of payments:
\(12\times22=264\)To find the total amount paid, multiply the number of payments by the payment amount:
\(264\times347=91,608\)There are 264 payments toward the loan and the total amount paid is $91,608c) Toward principal: $67,000
Toward interest: subtract the principal from the payment amount:
\(91,608-67,000=24,608\)Let 91,608 be the 100%, use a rule of three to find the % corresponding to the principal and interest:
\(\begin{gathered} Principal: \\ x=\frac{67,000\times100}{91,608}=73.1 \\ \\ Interest: \\ x=\frac{24,608\times100}{91,608}=26.9 \end{gathered}\)The percentage paid toward the principal is 73.1% and the percentage paid for interest is 26.9%Can someone explain to me why I got this question wrong? The reasoning for my answer (2, 3) for the vertex is because in the setup for the equation f(x) = a( x - h ) + k, x is subtracted from h. If h was negative, it would be adding instead because it'd be a negative and a negative. So I know h is positive. Am I misunderstanding the question? Will give brainliest!
Kevin's error is that he incorrectly identified the vertex of the parabola as (3, 2) instead of (2, 3), which resulted to the parabola opens downward. The correct vertex is at (2, 3) and the parabola opens upward.
Correcting an Error in Identifying the Vertex and Direction of a Parabola.You are correct that the vertex of the parabola can be determined using the equation f(x) = a(x - h)² + k, where the vertex is at (h, k). In this case, we have f(x) = -(x-2)² + 3, so the vertex can be found by setting x - 2 = 0, which gives x = 2. Plugging this value into the equation,
we get f(2) = -(2-2)² + 3 = 3, so the vertex is at (2, 3).
However, your reasoning for why h is positive is not correct. The expression x - h represents the horizontal distance from the vertex to any point on the parabola. So if x is greater than h, then the expression x - h will be positive, and if x is less than h, then the expression x - h will be negative. In this case, the vertex is at (2, 3), so we have h = 2. This means that any point to the right of the vertex will have a positive value of x - h, while any point to the left of the vertex will have a negative value of x - h.
Therefore, the correct explanation of Kevin's error is that he incorrectly identified the vertex as (3, 2) instead of (2, 3), and as a result, he also incorrectly concluded that the parabola opens downward. In fact, the parabola opens upward because the coefficient of the x² term, -1, is negative.
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What is the answer
(3t/t^5)^-5
The resultant answer of the given expression (3t/t⁵)⁻⁵ is t²⁰/243.
What exactly are expressions?A finite collection of symbols that are properly created in line with context-dependent criteria is referred to as an expression, sometimes known as a mathematical expression.To evaluate an algebraic expression, you must substitute a number for each variable and perform the arithmetic operations.The previous example's variable x is equivalent to 6 because 6 plus 6 = 12.If we know the values of our variables, we can replace the original variables with those values before evaluating the expression.So, solve the expression as follows: (3t/t^5)^-5
Apply exponent rule:
(3t/t^5)^-51/((3t/t^5)^5)Simplify as shown:
(3t/t^5)^5: 243/t²⁰1/243/t²⁰Apply function rule:
t²⁰/243Therefore, the resultant answer of the given expression (3t/t⁵)⁻⁵ is t²⁰/243.
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Find m and c for this line
Y+3x=1
Answer:
m = -3 ; c = 1
Step-by-step explanation:
y = -3x + 1
y = mx + c
m = -3
c = 1
The scores on a mathematics exam have a mean of 70 and a standard deviation of 5. Find the x-value that corresponds to the z-score 2.33. Give the exact answer.
Given:
Mean (μ) = 70
Standard deviation (σ) = 5
z-score = 2.33
To find:
The X-value.
Solution:
We know that,
\(z=\dfrac{X-\mu}{\sigma}\)
On substituting the values, we get
\(2.33=\dfrac{X-70}{5}\)
Multiply both sides by 5.
\(2.33\times 5=X-70\)
\(11.65=X-70\)
Add 70 on both sides.
\(11.65+70=X\)
\(81.65=X\)
Therefore, the required X-value is 81.65.
Answer:
x value is 81.65.
Step-by-step explanation:
Given:
Mean = 70Standard deviation = 5z score = 2.33Using the z-score formula:
z = (x - mean) / SD
Plug the values:
\(2.33=\frac{x-70}{5}\\x=5\left(2.33\right)+70\\x=81.65\)
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how do i answer this question please
Step-by-step explanation:
The RADIUS of the white circle is 6 mm (because diameter is 12mm)
area of white circle = pi r^2 = pi(6^2) = 113.097 mm^2
The SEMI circle area is radius 12 mm
area is 1/2 of an entire circle of radius 12 mm = 1/2 * pi r^2 =
1/2 * pi * 12^2 = 226.19 mm^2
subtract the white circle area to get shaded area = 113 mm^2
Answer:
\(a=113mm^{2}\)
Step-by-step explanation:
shaded area = Semicircle Area - Area of the Inside Circle
1. Area of the Inside Circle:
\(d=24/2=12mm\\r=12/2=6mm\)
\(a=\pi r^{2} =\pi (6)^{2} =36\pi\)
2. Semicircle area:
\(r=24/2=12mm\)
\(a=\frac{\pi r^{2} }{2}=\frac{\pi (12)^{2} }{2} =\frac{144\pi }{2} =72\pi\)
3. Shaded area:
\(a=(72-36)\pi =36\pi\)
\(36\pi\) ≈ \(113.097\)
3 significant figures: 113 mm2
Hope this helps
A story spoiler gives away the ending early. Does having a story spoiled in this way diminish suspense and hurt enjoyment? A study1 investigated this question. Give the test statistic and the p-value.For twelve different short stories, the study’s authors created a second version in which a spoiler paragraph at the beginning discussed the story and revealed the outcome. Each version of the twelve stories was read by at least 30 people and rated on a 1 to 10 scale to create an overall rating for the story, with higher ratings indicating greater enjoyment of the story. The ratings are given in Table 1 and stored in StorySpoilers. Stories 1 to 4 were ironic twist stories, stories 5 to 8 were mysteries, and stories 9 to 12 were literary stories. Test to see if there is a difference in mean overall enjoyment rating based on whether or not there is a spoiler.
When a story spoiler gives away the ending early, it diminishes the suspense and hurt enjoyment in the story.
What is a suspense?It should be noted that suspense simply means an uneasy feeling that's gotten by a reader when they didn't know what will happen next in a story.
In this case, when a story spoiler gives away the ending early, it diminishes the suspense and hurt enjoyment in the story.
A writer simply creates suspense by the release it information to the readers which raises key questions.
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Need help ASAP
the value of each variable. If your answer is not
teger, express it in simplest radical form.
The length of a is
The length of b is
(Simplify your answer.)
Answer:
me too (help)
Step-by-step explanation:
I need help quick!!!!!!!!!!!!
Answer:
Step-by-step explanation:
+3
:3
I also believe the equation is -4sinx+3
What is the value of x? Enter your answer in the box. X=
Check the picture below.
Answer:
x=50
Step-by-step explanation:
1. equal the equations to each other: 2(x+10)=3x-30
2. distribute the 2 to x+10: 2x+20=3x-30
3. subtract 2x from both sides, and add 30 to both sides: x=50
Last week, Alex took 90 selfies and Vic took 75 selfies. Today,
they each decided that some of these selfies were not very good
and deleted them. Alex deleted three times as many selfies
as Vic. Now, Alex has half as many selfies as Vic. How many
selfies did Alex delete?
PLEASE HELP ASAP
The number of selfies deleted by Alex is 52.5.
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Given that Last week, Alex took 90 selfies and Vic took 75 selfies. Today, they each decided that some of these selfies were not very good and deleted them. Alex deleted three times as many selfies as Vic.
Alex= 90
Vic = 75
Deleted ( Alex = 3 Vic )
Alex = 1 / 2 Vic
Deleted selfies = 90 - 75 /2 = 52.5
Hence, the number of selfies deleted by Alex is 52.5.
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Let f(x) = 2\(e^{3x}\) and g(x) = 5x³. At what value of x do the graphs of f and g have parallel tangents?
At the value of x= -0.366, the graphs of f and g have parallel tangents.
What is tangent?A tangent in geometry is a line that originates at an outside point and travels through a curve's center.
Given,
two functions, f(x) = 2\(e^{3x}\) and g(x) = 5x³.
To find the value of parallel tangents:
First, we find the first derivative.
That means,
f'(x) = 2\(e^{3x}\) (3) and g'(x) = 15x²
Graphs of f and g have the parallel tangents.
That means, their slopes are same.
f'(x) = 2\(e^{3x}\) (3) = g'(x) = 15x²
6\(e^{3x}\) = 15x²
2\(e^{3x}\) = 5x²
2\(e^{3x}\) - 5x² = 0
the value of x = -0.366
See in the attached image.
Therefore, the graphs of f and g have parallel tangents at the value of x= -0.366.
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A half of a pound of fudge cost$5.72,what is the unit rate per pound
Answer:
$11.44
Step-by-step explanation:
Since half a pound of fudge costs $5.72, then you just have to multiply by 2
5.72 x 2 = 11.44
So one pound of fudge costs $11.44
Hope this helps :)
Answer:
I think it's $1.39 per ounce.
Step-by-step explanation: