To find the value of "a" that divides the wedge into two equal pieces (by volume), we need to set up an integral to find the volume of the wedge and then solve for "a".
First, let's graph the wedge in the first octant:
We see that the wedge is bounded by the planes y=3z, y=12, and x=4, and extends from the origin to the point where x=4, y=12, and z=4 (since y=3z, we know that y/z=3, so when y=12, z=4).
To set up the integral, we need to decide which variable we will integrate with respect to. Since we want to divide the wedge into two equal pieces by slicing it with the plane x=2, we will integrate with respect to x and set the limits of integration as 0 and a. We can then solve for "a" by setting the two resulting integrals equal to each other and solving for "a".
The volume of the wedge is given by the integral:
∫∫(12-y)/3 dzdydx
over the region R in the first octant bounded by the planes y=3z, y=12, and x=4.
To set up the limits of integration for the x variable, we look at the equation of the slicing plane x=2. Since this plane intersects the wedge at x=2, we set the limits of integration for x as 0 and 2.
Thus, the volume of the left half of the wedge is given by the integral:
V₁ = ∫∫(12-y)/3 dzdydx
over the region R₁ in the first octant bounded by the planes y=3z, y=12, and x=2.
Therefore, a = 6 + sqrt(30) is the answer to the question.
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D Let R be the region bounded by the graph of y = 2x – 2, the horizontal line y = 2, and the vertical line x = 1. Which of the following gives the volume of the solid generated when region R is revolved about the vertical line x 1
A π∫_1^2▒〖((y+2)/2〗-1 ) ^2 dy
B π∫_0^2▒〖((y+2)/2〗-1 ) ^2 dy
C π∫_1^2▒〖(2-(2x-〗 2))^2 ^2 dy
D π∫_0^2▒〖((y+2)/2〗)^2-1^2 ) ^2 dy
The correct option is B: V = π ∫[0,2] ((y + 2)/2 - 1)^2 dy
This integral will give us the Volume of the solid generated when region R is revolved about the vertical line x = 1.
The volume of the solid generated when region R is revolved about the vertical line x = 1, we can use the method of cylindrical shells.
The formula for the volume of a solid generated by revolving a region R about a vertical line is given by:
V = 2π ∫[a,b] x * f(x) dx
In this case, since we are revolving the region R about the vertical line x = 1, the limits of integration will be from y = 2 (where the horizontal line y = 2 intersects the graph y = 2x - 2) to y = 0 (where the graph y = 2x - 2 intersects the x-axis).
Let's analyze the options provided:
A. π ∫[1,2] ((y + 2)/2 - 1)^2 dy
B. π ∫[0,2] ((y + 2)/2 - 1)^2 dy
C. π ∫[1,2] (2 - (2x - 2))^2 dy
D. π ∫[0,2] ((y + 2)/2)^2 - 1^2 dy
Option A: The limits of integration are incorrect. We need to integrate with respect to y, not x.
Option B: This appears to be the correct integral setup, integrating with respect to y and using the correct limits of integration.
Option C: This option incorrectly uses the expression (2 - (2x - 2))^2, which doesn't match the function y = 2x - 2.
Option D: The limits of integration are incorrect. We need to integrate from y = 2 to y = 0.
Therefore, the correct option is B:
V = π ∫[0,2] ((y + 2)/2 - 1)^2 dy
This integral will give us the volume of the solid generated when region R is revolved about the vertical line x = 1.
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Evaluate the expression for j = –12, k = –4, and m = 8.
km + j + m =
Recommendations La Language arts Scence Social stud Elghth grade Y.2 Find the slope from two points ZAO Find the slope of the line that passes through (10, 1) and (7,6). Simplify your answer and write it as a proper fraction, improper fraction, or integer Suomi Not feeling ready yet? These can help
If we want to calculate the slope we have to do the following:
\(m=\frac{6-1}{7-10}=\frac{5}{-3}=-\frac{5}{3}\)so the slope is -5/3
Jacob has a rectangular garden with an area of 56 square feet.The length of the garden is 8 feet.What is the width if the garden?
Answer:
The width of the garden is 7 feet.
Step-by-step explanation:
If the area is 56 feet, and the length is 8 feet, we can put this into the area equation.
Area = width * length
A = wl
Substitute variables.
56 = 8w
Divide by 8.
7 = w, or w = 7.
The width of the garden is 7 feet.
What is the domain? I need help on this problem
The domain of the function \(f(x) = \sqrt{\frac{1}{3}x + 2\) is (d) x ≥ -6
How to determine the domain of the functionFrom the question, we have the following parameters that can be used in our computation:
\(f(x) = \sqrt{\frac{1}{3}x + 2\)
Set the radicand greater than or equal to 0
So, we have
1/3x + 2 ≥ 0
Next, we have
1/3x ≥ -2
So, we have
x ≥ -6
Hence, the domain of the function is (d) x ≥ -6
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Please help! Correct answers only please!
You roll a 6-sided die two times.
What is the probability of rolling an odd number and then rolling a 3?
Simplify your answer and write it as a fraction or whole number.
Answer:
2/3
Step-by-step explanation:
There are 3 odd numbers in a dice which equals 1/2. Then there is 1/6 of a chance of rolling a 3. So it would be 1/2 + 1/6=4/6 which simplifies to 2/3.
H E L P I’M SO CONFUSED !!!
Answer: 20/3 = 40/6. These two fractions are known as equivalent fractions. Hope this helps ya.
Answer:
40
Step-by-step explanation:
20/3=40/6 the answer for the second fraction is just double the first fraction so your answer is c) 40
In circle K with m \angle JKL= 144m∠JKL=144 and JK=6JK=6 units, find the length of arc JL. Round to the nearest hundredth
The length of arc JL is approximately 15.08 units.
We have,
The length of an arc in a circle can be calculated using the formula:
Arc Length = (θ/360) * 2πr
where θ is the central angle in degrees, r is the radius of the circle, and 2π is approximately 6.28.
In this case, we are given the central angle JKL = 144° and the radius JK = 6 units.
Plugging in the values, we have:
Arc Length = (144/360) * 2π * 6
Arc Length ≈ (0.4) * 6.28 * 6
Arc Length ≈ 15.072 units
Rounded to the nearest hundredth,
The length of arc JL is approximately 15.08 units.
Thus,
The length of arc JL is approximately 15.08 units.
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is 0.7 greater or less than 9/10
Answer:
less than
Step-by-step explanation:
.7 = 7/10
7/10 is less than 9/10
plz mark brainliest
Answer:
Greater
Step-by-step explanation:
0.7 is equal to \(\frac{7}{10}\), which is greater than \(\frac{9}{10}\).
~theLocoCoco
Question 8 of 25 Ajar contains 40 dimes and nickels. The total value of the coins is $2.25. If d = the number of dimes and n= the number of nickels, this is the system of equations din = 40 0.0d + 0.05n = 2.25 How many of each type of coin are there? Solve the system to answer the question
A. 35 dimes and five nickels
B 5 dimes and 35 nickels
C 20 dimes and 20 nickels
D 10 dimes and 30 nickels
Answer:
Hello,
Answer A: 35 dimes and 5 nickels
Step-by-step explanation:
Let say
d the number of dimes
n the number of nickels
There are 25 coins: d+n=25
Total value : 0.1*d+0.05n=2.25
\(\left\{\begin {array} {ccc}d+n&=&40\\10*d+5*n&=&225\ multiplied\ by\ 100\\\end {array}\right.\\\\\\\left\{\begin {array} {ccc}n&=&40-d\\10*d+5*(40-d)&=&225\\\end {array}\right.\\\\\\\left\{\begin {array} {ccc}5*d&=&225-200\\n&=&40-d\\\end {array}\right.\\\\\\\left\{\begin {array} {ccc}5*d&=&25\\n&=&40-5\\\end {array}\right.\\\\\\\left\{\begin {array} {ccc}d&=&5\\n&=&35\\\end {array}\right.\\\\Proof:\\5*0.1+35*0.05=0.5+1.75=2.25\\\)
James has a goal of saving $600 by the end of the month. He already has $150 in his bank account. He makes $25 an hour at his job. Which equation could he use to find x, the number of hours he needs to work to reach his goal.
Answer:
150+25x = 600
Step-by-step explanation:
Hope this helped!
Nina gets paid $200 a week plus an extra $5 per handbag
she sells. Write an equation for this problem, and identify
the slope and y-intercept
Answer:
y=5x+200
Step-by-step explanation:
x=number of handbags
y-intercept=200
slope=5
please give me brainly since I'm trying to level up!
A soccer ball kicked with an initial velocity of 39 ft/sec and an angle of 44° with the ground. Find the parametric equations that model the motion. What was its maximum height?
step by step please asap
The soccer ball reaches a maximum height of approximately 34.8 feet.
How to solveThe parametric equations for the motion of the soccer ball are:
x(t) = 39*cos(44°)t ≈ 26.9t
y(t) = \(39\sin(44)*t - 16t^2\) ≈ \(22.7t - 16t^2\)
where t is the time elapsed since the ball was kicked.
To find the maximum height of the ball, we need to find the vertex of the parabolic trajectory given by y(t).
The maximum height occurs at the vertex, which is at the time t = -b/2a, where a = -16 and b = 39*sin(44°).
So, t = -b/2a ≈ 1.1 seconds.
Substituting this value of t into the equation for y(t), we get the maximum height:
y(max) = \(39*\sin(44)1.1 - 16(1.1)^2 = 34.8 feet.\)
Therefore, the soccer ball reaches a maximum height of approximately 34.8 feet.
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A company made a profit of £735,284.
What is this value rounded to 3 significant
figures?
Give your answer in pounds (£).
Answer:
£735,000
Step-by-step explanation:
we can keep the first three numbers and then round the rest (284). since the first number (2) is less than 5, we round to 0. thus, 284 -> 000 and 735,284 -> 735,000. note that the first 3 numbers do not include a zero, so we don't have to do anything fancy here.
find the surface area of this figure
The Surface area of the given cuboid is found to be 872 sq, in.
Explain about the cuboid?Three-dimensional shapes with length, breadth, and height are called cuboids. Six of the cuboid's sides are referred to as faces.
Every corner of a cuboid's faces, which usually refer to as vertices, are at a 90-degree angle. Hence, a cuboid is any object that has the shape of a box.The only thing that cuboids have are straight angles. It is not a cuboid if it has additional kinds of angles. The same is true for cubes. A cube and even a cuboid have the same number of edges, faces, and vertices: 12 edges, 8 vertices, and 6 faces.Surface area of a cuboid is = 2(lw + 2lh + hw0
l= lengthw= width.h = heightS.A = 2[(17)*(8) + (8)*(12) +(12)*(17)]
S.A = 2*436
S.A = 872
Thus, the Surface area of the given cuboid is found to be 872 sq, in.
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The amount of oil it takes to cover the bottom of the frying fan.
Is ts circumference or area and please explain why it's a circumference or an area.
Tina wrote the equations 3 x minus y = 9 and 4 x + y = 5. What can Tina conclude about the solution to this system of equations?
Answer:
(2, –3) is a solution to the system of linear equations.
Step-by-step explanation:
Given: Equations:
3x - y = 9 --------(1),
4x + y = 5 --------(2),
Add Equation (1) + Equation (2),
3x + 4x = 9 + 5
7x = 14 ( Combine like terms )
x = 2 ( Divide both sides by 7 ),
From equation 1:
3(2) - y = 9
6 - y = 9
-y = 9 - 6 ( Subtraction 6 on both sides )
-y = 3
y = - 3 ( Multiplying -1 on both sides )
Which one of the following is a characteristic of the classical approach to probability? a. Probabilities are based on outcomes observed from past experiments. O b. None of the above Oc Probabilities are based on opinion. Od. Probabilities assume outcomes of an experiment are equally likely.
A characteristic of the classical approach to probability include the following: D. probabilities assume outcomes of an experiment are equally likely.
What is an experiment?In Science, an experiment is a scientific investigation which typically involves the process of manipulating an independent variable (the cause), in order to determine or measure the dependent variable (the effect).
What is an expected value?In Mathematics and statistics, an expected value is sometimes referred to as the long-term mean (average) of a discrete random variable, E(X) and it can be calculated by taking the weighted average of all the outcomes of the discrete random variable with respect to their probabilities.
In this context, we can logically deduce that a characteristic of the classical approach to probability is that most times probabilities assume outcomes (results) of an experiment are equally likely.
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A bag of sweets contains only 1 pink sweet, 7 green sweets and 1 orange sweet. What is the probability that a sweet shoses at random from the bag will be green? Give your answer as a fraction in its simplest form
The probability of choosing a green sweet at random is 7/9.
Given information:
A bag of sweets contains only 1 pink sweet, 7 green sweets, and 1 orange sweet
There are 7 green sweets out of a total of 9 sweets in the bag.
So the probability of choosing a green sweet at random is:
= the total number of green sweets / total number of sweets
=7/9.
This is already in its simplest form, so the final answer is:
7/9.
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Yesterday, Savannah was
babysitting. She got paid $9
per hour. Then, she spent
$12 on Chipotle for dinner.
She had $42 left. How many
hours did Savannah babysit?
Answer:
6
Step-by-step explanation:
12 + 42 = 54 then 54 divided by 9 = 6.
What is the equation of the line which passes through 4 2 and has a slope of -2?
Answer:
Point slope form is the best form to use for this particular question.
We reflect point slope form as: \(y-y_{1} =m(x-x_1)\)
M reflects the slope, and the X and Y values are the coordinates given.
M = -2, X = 4, Y = 2
This should result in an equation that looks like this:
\(y-2=-2(x-4)\)
Now, if we want to turn this equation into slope-intercept form, we have to do some calculations. First of all, we have to multiply -2 with (x-4) to get
\(y-2=-2x+8\)
Next, we add two on both sides to isolate the Y variable.
Therefore, the slope-intercept equation would be: \(y=-2x+10\)
What is the image of ( − 1 , 5 ) after a reflection over the line y=x?
Question 7 of 10
What is the value of n?
1131-
160"
A. 690
B. 29°
C. 20°
D. 49°
30/100 + 5/10
please help me.
Answer:
4/5
Step-by-step explanation:
hope it helped :)
what are the terms a0, a1, a2, and a3 of the sequence {an}, where an equals a) 2n 1? b) (n 1)n 1? c) n/2? d) n/2 n/2?
When a\(_{n}\) = \(2^{n}\)+ n, a₀ = 1, a₁ = 3, a₂ = 6, and a₃ = 11
When a\(_{n}\) = n^(n+1)!, a₀ = 0, a₁ = 2, a₂ = 2⁶, and a₃ = 3²⁴
When a\(_{n}\) = [n/2], a₀ = 0, a₁ = 1/2, a₂ = 1, and a₃ = 3/2
When a\(_{n}\) = [n/2] + [n/2], a₀ = 0, a₁ = 1, a₂ = 2, and a₃ = 3/2
Number sequence
A number sequence is a progression or a list of numbers that are directed by a pattern or rule.
Here,
a₀, a₁, a₂, and a₃ are terms of a sequence
from option a, a\(_{n}\) = \(2^{n}\)+ n
⇒ a₀ = 2⁰+ 0 = 1+0 = 1
⇒ a₁ = 2¹+ 1 = 2+1 = 3
⇒ a₂, = 2²+ 2 = 4+2 = 6
⇒ a₃ = 2³+ 3 = 8 +3 = 11
from option b, a\(_{n}\) = n^(n+1)!
⇒ a₀ = 0^(0+1)! = 0
⇒ a₁ = 1^(1+1)! = 2² = 2
⇒ a₂, = 2^(2+1)! = 2^(3)! = 2⁶ [ ∵ 3! = 6 ]
⇒ a₃ = 3^(3+1)! = 3^(4)! = 3²⁴ [ ∵ 4! = 24 ]
from option c, a\(_{n}\) = [n/2]
⇒ a₀ = [0/2] = 0
⇒ a₁ = [1/2] = 1/2
⇒ a₂, = [2/2] = 1
⇒ a₃ = [3/2] = 3/2
from option d, a\(_{n}\) = [n/2] + [n/2]
⇒ a₀ = [0/2] + [0/2] = 0
⇒ a₁ = [1/2] + [1/2] = 1/2 + 1/2 = 1
⇒ a₂, = [2/2] + [2/2] = 1 + 1 = 2
⇒ a₃ = [3/2] + [3/2] = 6/4 = 3/2
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The Complete Question is -
What are the terms a₀, a₁, a₂, and a₃ of the sequence {a\(_{n}\)}, where a\(_{n}\) is where a\(_{n}\) equals
a. \(2^{n}\) + n b. n^(n+1)!
c. [n/2] d. [n/2] + [n/2]
What are the x-intercept and the y-intercept for this graph?
Arabella wants to buy 42 dresses.
Each dress costs £8.70.
Estimate the cost of Arabella's 42 dresses
Answer:
378 Euros
Step-by-step explanation:
A good way to estimate is to round to the nearest whole number or 10th and then multiply:
8.70 --> 9.00 (since 7 > 5 you round up to the nearest whole number, in this case 9)
then you multiply. A good way to do this in your head is doing:
split 42 into 2 numbers:
40, 2
then multiply by nine:
9 * 4 = 36 (9 * 40 = 360) added a zero since we multiplied by 40, its just easier to multiply by smaller numbers
9 * 2 = 18
then add the two numbers together:
360 + 18 = 378 Euros
The actual answer with a calculator is 365.4 Euros, so for an estimation its fairly close.
Another way you could solve it is to just round 8.70 --> 10 (rounding to the nearest 10th)
then:
10 * 42 = 420 (nice)
I don't recommend it since its way too off from the original value, but could be good for quick estimations.
hope this helped you :)
• James gets paid £400 by work – he saves
16% of this. How much does he save?
Step-by-step explanation:
\( \underline{ \underline{ \text{Given}}} : \)
Total income : £ 400Percentage of money that he saves : 26%\( \underline{ \underline{ \text{To \: find}}} : \)
Total amount of money that he saves\( \underline{ \underline{ \text{Solution}}} : \)
\( \tt{16\% \: of \: 400}\)
⟷ \( \tt{ \frac{16}{100} \times 400}\)
⟷ \( \tt{ £ 64}\)
\( \pink{ \boxed{ \boxed{ \tt{Our \: final \: answer : \boxed{ \underline { \tt{James \: saves \: \boxed { \: £\: 64}}}}}}}}\)
Hope I helped ! ♡
Have a wonderful day / night ! ツ
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help me solve this please
Answer:
x is 46.67
y is 28.4°
Step-by-step explanation:
To solve for x we use sine
sin ∅ = opposite / hypotenuse
AC is the opposite
x is the hypotenuse
so we have
sin 59° = 40 / x
x sin 59 = 40
Divide both sides by sin 59
x = 40/sin 59
x = 46.67
To solve for y we also use sine
sin y = 30/ 63
y = sin^-1(30/63)
y = 28.4°
Hope this helps you
P and Q are two geometrically similar solid shapes. The total surface area of shape P is 240 cm². The total surface area of shape Q is 2160 cm². The volume of shape P is 960 cm³. Calculate the volume of shape Q. Optional working + Answer cm³
The volume of the shape Q is 25,920 cm³.
What is the equation for a sphere's surface area and how does it relate to the volume of the sphere?The isoperimetric inequality describes the relationship between a sphere's volume and surface area. This inequality indicates that the sphere has the biggest volume among all forms with a fixed surface area. The sphere also has the lowest surface area among all forms with a fixed volume. Due to its ability to increase volume while reducing surface area, the sphere is sometimes referred to as the "most efficient" form.
Let us suppose the scale factor = k.
Given that, total surface area of shape P is 240 cm².
Then surface area of Q can be written as:
k² × surface area of shape P = surface area of shape Q
k² × 240 cm² = 2160 cm²
k² = 9
k = 3
The volume of shape Q is:
k³ × volume of shape P = volume of shape Q
3³ × 960 cm³ = 27 × 960 cm³ = 25,920 cm³
Hence, the volume of the shape Q is 25,920 cm³.
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