Sketch the surface z = x² + y²
Sketch the surface z = 2y² - 4x²
Answers
To sketch the surfaces z = x² + y² and z = 2y² - 4x², we can plot several points on the surface and connect them to form a 3D shape.
For z = x² + y², we can plot points for different values of x and y, such as:
(0, 0, 0)
(1, 0, 1)
(0, 1, 1)
(-1, 0, 1)
(0, -1, 1)
Connecting these points, we get a paraboloid with its vertex at the origin and opening upwards.
/ \
/ \
/ \
(0,0,0)
For z = 2y² - 4x², we can plot points for different values of x and y, such as:
(0, 0, 0)
(1, 1, -2)
(-1, 1, -2)
(1, -1, -2)
(-1, -1, -2)
Connecting these points, we get a hyperboloid with its vertex at the origin and opening downwards.
/\ /\
/ \/ \
/ \
(0,0,0)
The sketches of the surfaces are shown above.
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Related Questions
Answer please ASAP SUPER IMPORTANT
Answers
find the missing side length of the right triangle below. Round your answer to the nearest tenth.
Answers
Answer:
24.4
Step-by-step explanation:
14² + 20² = c²
196 + 400 = 596
√596 = 24.4
Find the rate of change of the linear function
shown in the graph, Then find the initial value.
The rate of change is
Answers
Answer:
6
Step-by-step explanation:
dfsfads
the area under the entire probability density curve is equal to ____
Answers
The probability density function is defined as the derivative of the cumulative distribution function. It represents the relative likelihood of a continuous random variable taking on a specific value. The total area under the probability density curve is always equal to 1.
For a continuous random variable X, the probability density function f(x) satisfies the following properties:
1. Non-negativity: f(x) ≥ 0 for all x.
2. Integrates to 1: The integral of the probability density function over the entire range of X is equal to 1:
∫[−∞, ∞] f(x) dx = 1
This integral represents the total area under the probability density curve, which must be equal to 1.
To calculate the probability of X falling within a certain interval [a, b], we can use the probability density function as follows:
P(a ≤ X ≤ b) = ∫[a, b] f(x) dx
This integral gives the probability that X takes on a value between a and b.
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Over the last three evenings, Raina received a total of 67 phone calls at the call center. The second evening, she received 3 times as many calls as the third evening. The first evening, she received 8 fewer cells than the third evening. How many phone calls did she receive each evening
Answers
Raina received 7 phone calls on the first evening, 45 phone calls on the second evening, and 15 phone calls on the third evening.
Let's assume the number of phone calls Raina received on the third evening is x.
According to the given information:
The second evening, she received 3 times as many calls as the third evening, so the number of calls on the second evening is 3x.
The first evening, she received 8 fewer calls than the third evening, so the number of calls on the first evening is x - 8.
The total number of phone calls over the three evenings is 67, so we can write the equation:
x + 3x + (x - 8) = 67
Combining like terms:
5x - 8 = 67
Adding 8 to both sides:
5x = 75
Dividing both sides by 5:
x = 15
So, Raina received 15 phone calls on the third evening.
On the second evening, she received 3 times as many calls, which is 3 * 15 = 45 calls.
On the first evening, she received 8 fewer calls than the third evening, which is 15 - 8 = 7 calls.
Therefore, Raina received 7 phone calls on the first evening, 45 phone calls on the second evening, and 15 phone calls on the third evening.
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HURRY PLEASE WILL MARK BRAINLIEST!!!!!!
Answers
Answer:
B
Step-by-step explanation:
B*H= Area of a Triangle
Substitute:
\(6.5*8\)
Answer:
52 in Squared (D)
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Match the absolute value functions with their vertices.
f(x) = x2 + 3
f(x) = |x-1| + 3
美国国国国
Vertex
(0,-4)
(5,2)
(-1,-7)
(2,3)
f(x)= x - 5 + 2
f(x)=-2 |x|5
f(x)= x - 4
|ƒ(x) = |x + 1| - 7
Absolute Value Function
Answers
The absolute value function for each vertex is given as follows:
(0,-4): f(x) = 0.5|x| - 4.(5,2): f(x) = 0.6|x - 5| + 2.(-1,-7): f(x) = 0.5|x + 1| - 7.(2,3): f(x) = 1.5|x - 2| + 3.How to define the absolute value function?An absolute value function of vertex (h,k) is defined as follows:
y = a|x - h| + k.
The leading coefficient a does not influence the vertex of the absolute value function.
Hence the functions are given at the beginning of the answer, writing the fractions as decimals.
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Graph the first four terms in the sequence 12, 6, 3, 1
Answers
According to the information, the correct way to graph this sequence is by putting the numbers 1, 2, 3, 4 as x coordinates... Then the coordinates would be (1,12), (2,6), (3,3 ) and (4,1).
How to graph the sequence?To graph the sequence we must establish an additional coordinate for each of the values. In this case we can put the value of 1, 2, 3, 4...
According to the above, the coordinates would be as follows:
(1,12)(2,6)(3,3)(4.1)Additionally, this graph would be a geometric sequence because it expresses values that are decreasing and is not a constant.
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5 is 1/2 of what number?
pls help!!
Answers
Explanation:
5 x 2 equals 10.
:)
Answer:
10
Step-by-step explanation:
Because 5 + 5 is 10, so 1/2 of 10 + 1/2 of 10 = 10
A triangle has side lengths of (5h – 4k) centimeters, (10h + 7m) centimeters, and
(5m – 2k) centimeters. which expression represents the perimeter, in centimeters,
of the triangle?
Answers
A mathematical expression which best represents the perimeter of this triangle is (15h - 6k + 12m) centimeters.
Given the following data:
Length A = (5h – 4k) centimeters
Length B = (10h + 7m) centimeters
Length C = (5m – 2k) centimeters.
What is a triangle?A triangle can be defined as a two-dimensional shape that comprises three (3) sides, three (3) vertices and three (3) angles.
How to calculate the perimeter of a triangle.Mathematically, the perimeter of a triangle is given by this formula:
\(P=A+B+C\)
Where:
A, B, and C are length of sides.Substituting the given parameters into the formula, we have;
\(P=(5h - 4k) +(10h + 7m) +(5m - 2k)\\\\P=5h+10h-4k-2k+7m+5m\\\\P=(15h-6k+12m)\;centimeters\)
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Exercise 3.3 Let x be an element of the standard form polyhedron P Ex E l Ax b, x 0). Prove that a vector d E Rn is a feasible direction at x if and only if Ad 0 and di 0 for every i such that ri 0.
Answers
Vector d ∈ R^n is a feasible direction at x if and only if Ad ≤ 0 and d_i ≥ 0 for every i such that r_i > 0.
To prove that a vector d ∈ R^n is a feasible direction at x if and only if Ad ≤ 0 and d_i ≥ 0 for every i such that r_i > 0, we need to prove both directions of the implication.
First, assume that d is a feasible direction at x. This means that there exists ε > 0 such that x + εd ∈ P. Since x ∈ P, we have A x ≤ b and x ≥ 0. Adding εd to both sides, we get A (x + εd) ≤ b and (x + εd) ≥ 0. Since ε > 0, we can divide both sides by ε to get A d ≤ (b - Ax)/ε and d ≥ -x/ε. Since x ≥ 0, we have -x/ε ≤ 0, so d ≥ 0.
Moreover, for any i such that r_i > 0, we have (Ad)_i ≤ (b - Ax)_i/ε ≤ (b_i - A_i^T x)/ε < 0, where the last inequality follows from the fact that x is in the interior of P and thus b_i - A_i^T x > 0. Therefore, we have Ad ≤ 0 for all i such that r_i > 0.
Conversely, assume that Ad ≤ 0 and d_i ≥ 0 for every i such that r_i > 0. We need to show that there exists ε > 0 such that x + εd ∈ P. Since Ad ≤ 0, we have A d ≤ 0. If d = 0, then any ε > 0 works. Otherwise, let ε = min{-x_i/d_i : d_i < 0}. Since d_i ≥ 0 for i such that r_i = 0, the minimum is well-defined and positive.
Moreover, since Ad ≤ 0, we have A (x + εd) ≤ Ax + εAd ≤ b. Finally, since d_i ≥ 0 and ε > 0, we have (x + εd)_i ≥ 0 for all i. Therefore, x + εd is a feasible point in P, and d is a feasible direction at x.
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pan of which followi. Aequired: 1. A Proakie al inoome absement for the year ansed Kowember 20 , sora. C. Prepare a baiance theef as of Noventer 30 2oya acied Noventer 30, a VE. have been tho awount of aw meane ar not ioss?
Answers
The income statement should include all sources of revenue and deduct all applicable expenses to calculate the net income or loss for the period. To create a balance sheet gather information about the company's assets, liabilities, and shareholders' equity as of that specific date. To determine whether there has been an increase or decrease compare the net income figure from a previous period with the net income figure from the current period
1) To prepare a projected income statement for the year ending November 20, sora, you would need to gather information about the revenues and expenses expected during that period. The income statement should include all sources of revenue and deduct all applicable expenses to calculate the net income or loss for the period.
2) To create a balance sheet as of November 30, 2oya, you will need to gather information about the company's assets, liabilities, and shareholders' equity as of that specific date. The balance sheet provides a snapshot of the company's financial position, showing what it owns, owes, and the remaining equity.
3) To determine whether there has been an increase or decrease in the amount of net income, you would need to compare the net income figure from a previous period (presumably November 20, sora) with the net income figure from the current period (ending November 30, 2oya). If the net income has increased, it means the company has generated more profit during the current period compared to the previous one. Conversely, if the net income has decreased, it indicates a decline in profitability.
Overall, the task involves preparing a projected income statement and balance sheet and analyzing the change in net income to assess the company's financial performance.
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hsjebsysgdkbsvehejkebegdhjebebfdsjnebdhdnebeh
Answers
Answer:
hsjebsysgdkbsvehejkebegdhjebebfdsjnebdhdnebehhwbhakj d
Step-by-step explanation:
If the distance from A to B is 7 units, which of the following could be used to calculate the coordinates for point B? 07. Vix + 4y + +(y + 5)2 07. Vix + 5)2 + (y + 45° 07. V(x - 4) +(y – 5) 07. Vix - 5) + (y - 4)
Answers
The coordinates for point B are 7 = √(x - 5)² + (y - 4)².
What is the distance formula?
The distance formula is used to calculate the length of the line which joins the two points in an x−y plane. The distance between two points is the length of the line joining the two points. If the two points lie on the same horizontal or same vertical line.
Here, we have
Given: Segment AB Has point A located At (5, 4). If The Distance from A To B Is 7 units.
To find the distance between any two the following formula is used.
D = √(x₂ - x₁)² + (y₂ - y₁)²
7 = √(x - 5)² + (y - 4)²
Hence, the coordinates for point B are 7 = √(x - 5)² + (y - 4)².
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in , there were immigrants admitted to a country. in , the number was . a. assuming that the change in immigration is linear, write an equation expressing the number of immigrants, y, in terms of t, the number of years after 1900. b. use your result in part a to predict the number of immigrants admitted to the country in . c. considering the value of the y-intercept in your answer to part a, discuss the validity of using this equation to model the number of immigrants throughout the entire 20th century.
Answers
a. The linear equation for the number of immigrants is y = 16,033.444t - 16,764,061.4.
b. The predicted number of immigrants admitted to the country in 2014 is approximately 1,825,753.
c. The validity of using this equation to model the number of immigrants throughout the entire 20th century is questionable due to the negative y-intercept, which implies negative immigrants in the year 1900.
a. Assuming a linear change in immigration, we can write the equation expressing the number of immigrants, y, in terms of t, the number of years after 1900, as:
y = mt + b
where m represents the rate of change (slope) and b represents the initial value (y-intercept).
To find the values of m and b, we can use the given data points (1950, 241,832) and (2004, 1,107,638).
Let's calculate the slope (m):
m = (change in y) / (change in t)
m = (1,107,638 - 241,832) / (2004 - 1950)
m = 865,806 / 54
m ≈ 16,033.444
Now, let's substitute one of the data points (1950, 241,832) into the equation to find the value of b:
241,832 = (16,033.444)(1950) + b
b = 241,832 - (16,033.444)(1950)
b ≈ -16,764,061.4
Therefore, the linear equation for the number of immigrants is:
y = 16,033.444t - 16,764,061.4
b. To predict the number of immigrants admitted to the country in 2014, we need to find the value of y when t = 2014 - 1900 = 114:
y = 16,033.444(114) - 16,764,061.4
Calculating the expression:
y ≈ 1,825,753.216
Therefore, the predicted number of immigrants admitted to the country in 2014 is approximately 1,825,753.
c. Considering the value of the y-intercept in the equation (-16,764,061.4), it suggests that in the year 1900 (t = 0), there were already negative immigrants, which does not make sense in the context of immigration. Therefore, using this linear equation to model the number of immigrants throughout the entire 20th century may not be valid. It is important to consider the limitations of the linear model and the historical context of immigration patterns.
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Complete Question:
In 1950, there were 241,832 immigrants admitted to a country. In 2004, the number was 1,107,638
a. Assuming that the change in immigration is linear, write an equation expressing the number of immigrants, y, in terms of t, the number of years after 1900
b. Use your result in part a to predict the number of immigrants admitted to the country in 2014
c. Considering the value of the y-intercept in your answer to part a, discuss the validity of using this equation to model the number of immigrants throughout the entire 20th century.
Evaluate 150-(2+2)^3
Answers
Answer:
86
Step-by-step explanation:
Answer: the answer is 86
Step-by-step explanation:
91) __________ involves the analysis of accumulated data and involves a __________. a) OLAP, database b) OLAP, data warehouse c) OLTP, database d) OLTP, data warehouse
Answers
OLAP is used for the analysis of accumulated data, and it requires a data warehouse.
while OLTP is used for transaction processing and requires a database optimized for real-time transaction processing. The analysis of accumulated data is known as Online Analytical Processing (OLAP), and it involves a data warehouse. OLAP is a business intelligence tool used for multi-dimensional analysis of large data sets, while a data warehouse is a central repository that stores historical and current data from multiple sources in a structured manner. OLAP allows users to perform complex queries on large data sets, analyze trends, and make informed business decisions. It is often used in data mining and decision support systems. OLAP tools can be used to slice and dice data, drill down to more detailed data, and roll up to higher levels of summary data. OLAP is primarily used for analytical purposes and is not designed for transaction processing. On the other hand, a data warehouse is designed to support OLAP and is used for storing large amounts of historical data that can be queried and analyzed. Data is extracted from various sources, transformed, and loaded into the data warehouse in a structured format, enabling efficient querying and analysis. OLTP (Online Transaction Processing), on the other hand, is a type of transaction processing that is designed for processing real-time transactions in databases. It is used for day-to-day operations such as order processing, inventory management, and customer management. OLTP is optimized for processing large volumes of transactions in real-time, and is not suitable for analytical purposes.
In summary, OLAP is used for the analysis of accumulated data, and it requires a data warehouse, while OLTP is used for transaction processing and requires a database optimized for real-time transaction processing.
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.
4(3x - 6) = 3(4x - 3)
Answers
Answer:12x - 24 = 12 - 3
Step-by-step explanation:If you use the distrubutive property to solve this then 4 * 3x = 12x, 4 * 6 = 24, and then do the other side 3 * 4x = 12x, 3 * 3 = 9. There you have your answer. Unless it was suppose to be -12x = 3.
Answer:
No solution
Step-by-step explanation:
Use Distributive property.
4 · 3x = 12x
4 · (-6) = -24
Your equation should look like this now:
12x - 24 = 3(4x - 3)
Use Distributive property on the right side now.
3 · 4x = 12x
3 · (-3) = -9
Your equation now:
12x - 24 = 12x - 9
Add 24 to both sides.
Your equation:
12x = 12x + 15
Subtract 12x from both sides.
15 is left
So there is no solution.
Hope I helped :)
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What is (cos71) 6.3/x
Answers
Answer:
2 dp 19.35
1dp 19.4
nearest integer 19
Step-by-step explanation:
\(\frac{6.3}{(\cos71)}\\\)
19.35078697
dp= decimal point
Ryan uses a random name generator to choose 50 students from his high school. Of
those 50, 18 wear glasses. If there are 850 students in his high school, how many of
them do you predict will wear glasses?
Answers
GOT A QUESTION
would you date a depressing girl if so let me know
Answers
Answer:
i wold but can we just be frends
Step-by-step explanation:
i have a discord if you wanna join it?
How to use a ration box to do. Tammy saved nickels and pennies in a jar the ration of nickels to pennies was 2 to 5 if there where 70 nickels in the jar how many coins are there in all
Answers
Given :
Tammy saved nickels and pennies in a jar the ration of nickels to pennies was 2 : 5 .
To Find :
If there where 70 nickels in the jar how many coins are there in all.
Solution :
Let, number of pennies are x.
It is given that ratio of nickels to pennies is 2 : 5.
\(\dfrac{2}{5} = \dfrac{70}{x}\\\\x = \dfrac{70\times 5 }{2}\\\\x = 175\)
So, numbers of pennies are 175.
Therefore, total number of coins in the jar is, 175 + 70 = 245 coins.
Let #x) and g(x) be polynomials as shown below.
Answers
Answer:
Can someone help me with this to pleasee
Step-by-step explanation:
Find AEB angle please friends ?
Answers
Hii
Hope u understand... Thats the value of angle E
Answer:
A=90° (angle in a semi circle)
E= 180°-55°-90°(sum of angles in a triangle)
E=35°
Equivalate a +4 when a=7
Answers
Answer:
11
Step-by-step explanation:
Plug in the variable into the equation. 7+4=11
Answer:
11
Step-by-step explanation:
a is 7 so 7 + 4 = 11
this should be the answer if not i dont know. sorry
Find the area (shaded) and round to the tenths place if necessary.
show work please, I need work for full credit
Answers
Answer:
9π - 9
Step-by-step explanation:
Depends on what the question stated was pi (π). The area of the circle is 9(3 squared) * π. the shaded area is the area of the circle - the area of the triangle. The area of the triangle is base * high / 2. If the diameter of the circle (6) is what we use as the base, then 3 would be the high, making the area 9. This means the shaded area would be 9π - 9.
20 points! pls helppppp it's almost recognition day for me!!
I'm sorry but i'm bad at math ;-;
using the given figures, find the values of the unknown variables
(PROVING ISOSCELES TRAPEZOID)
Answers
2. x = 32, y = 52
3. x = 4, y = 5
assuming that all the shapes are regular
Consider a closed economy where the central bank does not play an active role in setting
the interest rate. The following equations describe the economy:
= 100 + 0.75
= 200 ― 2500
= 25 T = 20
(/P)
= ― 10000
= 1500
P = 3
Answers
Note that , the equilibrium interest rate in this closed economy is approximately 0.0796 or 7.96%.
How is this so?Given the following equations -
C = 100 + 0.75% * (M/P)\(^{D}\) = Y - 10000
1 = 200 - 2500i
G = 25
T = 20
M = 1500
P = 3
Let's start by finding the level of income (Y) in equilibrium. In equilibrium, total spending (Y) equals total income (Y).
Y = C + I + G
Y = C + 0 + G (since investment, I, is not specified in the equations)
Substituting the equation for consumption (C) and given values, we have -
Y = (100 + 0.75% * (M/P)\(^{D}\)) + G
Y = (100 + 0.75% * (1500/3)\(^{D}\)) + 25
Y = (100 + 0.75% * 500\(^{D}\)) + 25
Y = (100 + 3.75) + 25
Y = 128.75
Now, let's equate the quantity of money demanded (M\(^{D}\)) with the quantity of money supplied (M) -
M\(^{D}\) = M
100 + 0.75% * (M/P)\(^{D}\) = 1500
Substituting the given values for M and P -
100 + 0.75% * (1500/3)\(^{D}\) = 1500
100 + 0.75% * 500\(^{D}\) = 1500
100 + 3.75 = 1500
3.75 = 1500 - 100
3.75 = 1400
Next, we solve the equation for i -
1 = 200 - 2500i
Rearranging the equation -
2500i = 200 - 1
2500i = 199
i = 199/2500
i = 0.0796
Hence, the equilibrium interest rate in this closed economy is approximately 0.0796 or 7.96%.
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Full Question:
Although part of your question is missing, you might be referring to this full question:
Consider a closed economy where the central bank does not play an active role in setting the interest rate. The following equations describe the economy: C = 100+ 0.75% (M/P)^D =Y - 10000 1 = 200-2500i G = 25 and T = 20 M = 1500 P=3 4. Solve for the equilibrium interest rate.
what is the area of this trapezoid PLS TELL ME IF ITS IN or IN^2!!!!!
Answers
Answer:
30 in^2
Step-by-step explanation:
15 x 4 = 60
60/2 = 30
30 in^2
Answer:
This is your answer. If I'm right so,
Please mark me as brainliest. thanks!!!
Aimee went to a stationary shop. She purchased 2 packs of red pens, 4 packs of black pens, and 3 packs of blue pens.
The cost of each pack of pens was $2.50. Which expression shows the total amount Aimee spent on the pens?
A ($2.50 x 2 x 4x3)
B $2.50 x (2+4+3)
C($2.50 x 2) + 3+4
D (52.50 +2 +4+3)
Answers
Answer:
A.
Step-by-step explanation:
The answer is B.
Each pack costs 2.50, so this means we can add all of our packs brought together, before multiplying. (2+4+3)=7. So our final equation should be 7 x 2.50 ,therefore B is our correct answer.
Hope this helps. & don't forget to drink water !!