Answer:
The correct answer is 19.375
Answer:
19.375in.
Step-by-step explanation: You take 59.5In. and you minus it from 40.125In.
Hello , please help ( see image!)
Answer:
250 and 10
Step-by-step explanation:
substitute x = 10 into the expressions
a = \(\frac{5x^2}{2}\)
= \(\frac{5(10)^2}{2}\)
= \(\frac{5(100)}{2}\)
= \(\frac{500}{2}\)
= 250
-----------------------------------------------
b = \(\frac{2x^2(x-5)}{10x}\)
= \(\frac{2(10)^2(10-5)}{10(10)}\)
= \(\frac{2(100)(5)}{100}\) ( cancel 100 on numerator and denominator )
= \(\frac{2(5)}{1}\)
= 10
(b) Use the method of variation of parameters to find the general solution of the equation y" + 3y' – 4y = 5 (-2x + 1) e^x.
The general solution to the nonhomogeneous equation is, y(x) = y_h(x) + y_p(x) = c1e^(-4x) + c2e^x - 5x + 10 + c3e^(2x)cos(2√2x) + c4e^(2x)sin(2√2x), where c1, c2, c3, and c4 are constants to be determined from any initial or boundary conditions.
The given differential equation is:
y" + 3y' - 4y = 5(-2x + 1)e^x
To solve this equation using the method of variation of parameters, we first find the solution to the homogeneous equation:
y" + 3y' - 4y = 0
The characteristic equation is:
r^2 + 3r - 4 = 0
Factoring this, we get:
(r + 4)(r - 1) = 0
So the roots are r = -4 and r = 1. Therefore, the general solution to the homogeneous equation is:
y_h(x) = c1e^(-4x) + c2e^x
To find the particular solution, we assume that it has the form:
y_p(x) = u1(x)e^(-4x) + u2(x)e^x
where u1(x) and u2(x) are functions to be determined. We substitute this into the original equation:
y" + 3y' - 4y = 5(-2x + 1)e^x
And simplify the left-hand side:
y_p''(x) + 3y_p'(x) - 4y_p(x) = u1''(x)e^(-4x) + u2''(x)e^x + (-8u1'(x) + u2'(x))e^(-4x) + (u1'(x) + 3u2'(x))e^x - 4(u1(x)e^(-4x) + u2(x)e^x)
We want to choose u1(x) and u2(x) so that this simplifies to 5(-2x + 1)e^x.
Equating the coefficients of e^x and e^(-4x) gives us the following equations:
u1''(x) - 4u1(x) - 8u1'(x) = 0
u2''(x) + u2'(x) - 4u2(x) = 5(-2x + 1)
The solution to the first equation can be found using the auxiliary equation r^2 - 4r - 8 = 0, which has roots r = 2 + 2√2 and r = 2 - 2√2. The general solution to this equation is:
u1(x) = c3e^(2x)cos(2√2x) + c4e^(2x)sin(2√2x)
To solve the second equation, we use undetermined coefficients. Since -2x + 1 is a linear function, we assume a particular solution of the form:
u2(x) = Ax + B
where A and B are constants to be determined. Substituting this into the equation and simplifying, we get:
2A + B = -10x + 5
So we have A = -5 and B = 10. Therefore, the particular solution is:
u2(x) = -5x + 10
The general solution to the nonhomogeneous equation is:
y(x) = y_h(x) + y_p(x) = c1e^(-4x) + c2e^x - 5x + 10 + c3e^(2x)cos(2√2x) + c4e^(2x)sin(2√2x)
where c1, c2, c3, and c4 are constants to be determined from any initial or boundary conditions.
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Ella, Danila, and Sophia are competing in an eating contest. Their
probabilities of winning the contest are as follows:
P(Ella wins) = 0.75
P(Danila wins) = 5%
1
P(Sophia wins)
5
Put the following events in order from least to most likely.
Ella wins Sophia wins Danila wins
Answer:
The probabilities are listed as:
P(Ella wins) = 0.75
P(Danila wins) = 5% or 0.05
P(Sophia wins) = 1/5 or 0.2
To determine the order of least to most likely events:
- The probability of Danila winning is the lowest at just 5%. Therefore, Danila winning is the least likely event.
- The probability of Sophia winning (0.2) is greater than Danila's probability of winning (0.05). Hence, Sophia winning is more likely than Danila winning.
- Finally, Ella has the highest probability of winning (0.75) among all three contestants. So, Ella winning is the most likely event.
Therefore, the order of least to most likely events is: Danila wins, Sophia wins, Ella wins.
Answer: Danila, Sophia then Ella
Step-by-step explanation: I took quiz on Khan
Please helpp it is due soon
Answer:
(1) 3 quarts(2) 48 cupsStep-by-step explanation:
1 quart = 4 cups
so we get
4 cups/quart
_____________
(1) 12 cups =
12 / 4 cups =
3 quarts
_____________
(2) 12 quarts =
12 quarts × 4 cups =
48 cups
_____________
#IndonesianPride
- kexcvi -
Answer: (1) 3 quarts
(2) 48 cups
Step-by-step explanation: hope that helped!
A corporation earned a profit of $2.5 x 104 for 1 x 10³ days in a row. What was the corporation's total profi
during this time period?
Total profit earned = 25000000 dollars
What is profit?Profit is a financial achievement which is the difference between the amount of money or resources people earned and the amount is spent in various purpose. In case of a business organization, the difference between production and cost is termed as profit. Let, someone invested money for operating business, he needs to spend money for workers, for the welfare of business and after all these he has amount that comes from business that is called profit.
What is the total profit during this time period?Given, profit earned = $ 2.5 × 10⁴ in the 1×10³ days in a row
total profit earned during this time = $(2.5 × 10⁴ × 10³)
$2.5 × 10⁷
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What is indicated by a Pearson correlation of r= +1.00 between X and Y? a. Each time X increases, there is a perfectly predictable increase in Y b. Every increase in X causes an increase in Y c. All of the other 3 choices occur with a correlation of +1.00. d. Every change in X causes a change in Y
Each time X increases, there is a perfectly predictable increase in Y is indicated by a Pearson correlation of r= +1.00 between X and Y
A Pearson correlation coefficient of +1.00 indicates a perfect positive linear relationship between the variables X and Y. It means that as X increases, Y increases in a perfectly predictable manner. The correlation coefficient of +1.00 indicates a strong and direct relationship between the two variables, where the values of Y can be precisely determined based on the values of X.
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Two angles form a linear pair. The measure of one of the angles is 62º.
What is the measure of the other angle in the linear pair?
[A] 118
[B] 62
[C] 28
[D] I don't know.
What is the value of x in this figure?
[A] x = 23
[B] x = 67
[C] x = 113
[D] I don't know.
What is the relationship between ∠AXE and ∠EXD in this figure?
[A] Complementary angles.
[B] Supplementary angles.
[C] Neither complementary nor supplementary angles.
[D] I don't know.
Answer:
the answer to the first one is 118 the value of x is 113
Step-by-step explanation:
SOMEONE DELETED MY ORIGINAL ANSWER
The two angles will be linear pairs if the sum is 180° therefore,linear pair of 62° is 118° so option [A] is correct.
The value of x in the figure is 113° so option [C] is correct.
The m∠EXD and m∠AXE are the supplementary angles so option (B) is correct.
What is an angle?An angle is a geometry in plane geometry that is created by 2 rays or lines that have an identical terminus.
The identical endpoint of the two rays—known as the vertex—is referenced as an angle's sides.
01)
Two angles will be linear pairs if their sum is 180°.
If the first angle is 62° then the second will be 180° - 62° = 118°
Hence "The two angles will be linear pairs if the sum is 180° therefore, linear pair of 62° is 118°".
02)
The angle x is in the same line with supplementary angle 67° so
x = 180 - 67 = 113°.
Hence "The value of x in the figure is 113°".
03)
In the figure, AXD is a straight line, therefore,
m∠EXD + m∠AXE = 180°
Since the sum of two angles is 180° then they are called supplementary angles.
Hence "The m∠EXD and m∠AXE are the supplementary angles".
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A geodesic between two points on a surface is the shortest path between the two points on that surface, find the geodesic between two arbitrary points (-3,0,9) and (3,0,9) on surface of z=16-(x² + y²) (the curve with the shortest length between two points should satisfy z=16-(x² + y²) or shortest curve on surface ) (20 marks)
Answer:
Step-by-step explanation:
To find the geodesic between the points (-3, 0, 9) and (3, 0, 9) on the surface defined by z = 16 - (x^2 + y^2), we can use the concept of geodesic equations.
A geodesic is a curve that locally minimizes the length between two points on a surface. The length of a curve on a surface can be expressed using the arc length formula:
ds^2 = dx^2 + dy^2 + dz^2
In this case, since the surface is defined by z = 16 - (x^2 + y^2), we can express the arc length in terms of x and y:
ds^2 = dx^2 + dy^2 + dz^2
= dx^2 + dy^2 + (dz/dx dx)^2 + (dz/dy dy)^2
To find the geodesic, we need to minimize the arc length, which is equivalent to minimizing the integral of ds:
L = ∫ √(dx^2 + dy^2 + (dz/dx dx)^2 + (dz/dy dy)^2)
To simplify the problem, we can notice that the surface defined by z = 16 - (x^2 + y^2) is rotationally symmetric about the z-axis. Therefore, the geodesic connecting the two points (-3, 0, 9) and (3, 0, 9) lies on the x-z plane.
We can parameterize the geodesic curve on the x-z plane as x = f(t) and z = g(t), where t is a parameter.
Now, we can rewrite the arc length integral in terms of t:
L = ∫ √(dx/dt)^2 + (dz/dt)^2 dt
Substituting the parameterization x = f(t) and z = g(t), we have:
L = ∫ √(df/dt)^2 + (dg/dt)^2 dt
To minimize L, we need to find the values of f(t) and g(t) that satisfy the Euler-Lagrange equations:
d/dt(dL/df') - dL/df = 0
d/dt(dL/dg') - dL/dg = 0
By solving these differential equations, we can determine the specific form of the geodesic between the two points (-3, 0, 9) and (3, 0, 9) on the surface.
Note that the solution to these equations is beyond the scope of a simple text-based response, as it involves solving a system of differential equations. It typically requires advanced mathematical techniques, such as variational calculus or numerical methods.
Therefore, to obtain the precise equation of the geodesic between the two given points on the surface z = 16 - (x^2 + y^2), it is recommended to use specialized software or consult advanced mathematical resources.
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I need help with this question, here's the image
Answer:
The answer Is C
Solve the equation by completing the
square. Enter the smallest solution first
and round to the nearest tenth.
s2 - 10s - 23 = 0
-
s = [?]
=
Answer:
s ≈ - 1.9 , s ≈ 11.9
Step-by-step explanation:
s² - 10s - 23 = 0 ( add 23 to both sides )
s² - 10s = 23
To complete the square
add ( half the coefficient of the s- term )² to both sides
s² + 2(- 5)s + 25 = 23 + 25
(s - 5)² = 48 ( take square root of both sides )
s - 5 = ± \(\sqrt{48}\) ( add 5 to both sides )
s = 5 ± \(\sqrt{48}\)
Then
s = 5 - \(\sqrt{48}\) ≈ - 1.9 ( to the nearest tenth ) ← smaller solution
s = 5 + \(\sqrt{48}\) ≈ 11.9 ( to the nearest tenth ) ← larger solution
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Jennifer is a wedding planner. She set up six chairs at each table for the reception. If t represents the number of tables, which of the following expressions represents the total number of chairs that she set up?
A. 6 + t
B. t + 6
C. 6t
D. t - 6 ( hurry fo meh)
Answer:
C is the correct answer
how do we find the values of x and y.
We are given the following equation in vector form:
\(\begin{bmatrix}{5x} & {} \\ {20} & {}\end{bmatrix}=\begin{bmatrix}{3} & {} \\ {5y} & {}\end{bmatrix}\)To solve the equation we need to remember that two vectors are equal of the corresponding elements are equal. Therefore, we set equal the first elements:
\(5x=3\)Now, we divide both sides by 5:
\(x=\frac{3}{5}\)Now, we set equal the second elements:
\(20=5y\)Now, we divide both sides by 5:
\(\begin{gathered} \frac{20}{5}=y \\ \\ 4=y \end{gathered}\)Therefore, "x = 3/5" and "y = 4".
Sarah has $12.45 in quarters and nickels. She has 39 more nickels than quarters.
How many of each coin does she have?
Answer:
There are 14 nickes, 24 dimes and 48 quarters
Step-by-step explanation:
let x represent the number of nickels.
As she has 10 more dimes than nickels, the number of dimes is x + 10.
As she has twice as many quarters as dimes, the number of quarters is 2(x + 10)
the total value is $15.10, so I get an equation:
0.05x + 0.1*(x + 10) + 0.25*2(x + 10) = 15.10
0.05x + 0.1x + 1 + 0.5x + 5 = 15.10
0.65x = 9.1
x = 14
x + 10 = 24
2(x + 10) = 48
simplify 7^2 • 7^6 =
Use cylindrical coordinates to evaluate ∭E√x2+y2dV, where E is the region that lies inside the cylinder x2+y2=16 and between the planes z=−5 and z=4.
The value of the triple integral is 72π.
To evaluate this triple integral in cylindrical coordinates, we first need to express the region E using cylindrical coordinates.
The cylinder x² + y² = 16 can be expressed in cylindrical coordinates as r² = 16, or r = 4. The planes z = -5 and z = 4 define a region of height 9.
So, the region E can be expressed in cylindrical coordinates as:
4 ≤ r ≤ 4
-5 ≤ z ≤ 4
0 ≤ θ ≤ 2π
The integrand √(x² + y²) can be expressed in cylindrical coordinates as r, so the integral becomes:
∭E√x²+y²dV = ∫0²π ∫4⁴ ∫-5⁴ r dz dr dθ
Note that the limits of integration for r are from 0 to 4, which means we are only integrating over the positive x-axis. Since the integrand is an even function of x and y, we can multiply the result by 2 to get the total volume.
The integral with respect to z is easy to evaluate:
∫₋₅⁴ r dz = r(4 - (-5))
= 9r
So the triple integral becomes:
∭E√x²+y²dV = 2 ∫0^2π ∫4⁴ 9r dr dθ
= 2(9) ∫0^²π 4 dθ
= 72π
Therefore, the value of the triple integral is 72π.
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If Pua needs 3 1/4 cups of oatmeal, how many 1/4 cups of oatmeal will she use?
ANSWER: If you do a trick called all around the world, you should get
13/4
Pua will use 13, 1/4 cups of oatmeal.
What is division?The division in mathematics is one kind of operation. In this process, we split the expressions or numbers into the same number of parts.
Given:
Pua needs 3\(\frac{1}{4}\) cups of oatmeal.
The number of 1/4 cups of oatmeal,
she will use,
= 13/4 ÷ 1/4
= 13
Therefore, she will use 13 cups.
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What is the percent of 40 of 230
Answer:
17.39
Step-by-step explanation:
40:230*100 =
( 40*100):230 =
4000:230 = 17.39
Answer:
20 % would be ur answer to ur question
(7m+3)+(7m+6)
I really need help with this
Answer:
Step-by-step explanation:
The parenthesis can cancel because the lack of anything you can do in them, so that will leave you with 7m + 3 + 7m + 6
Next step is to add like numbers, you should start by adding 7m + 7m, which would be 14m.
Next would be to add 3 + 6, which is nine.
To end this equation, simply put 14m + 9
There is no one-number answer because we do not know what m is. So the equation 14m + 9 is the final answer.
an oil prospector will drill a succession of holes attempting to find a productive well. assume the probability of being successful on any drilling is 0.15, and that outcomes of drillings are independent. what is the expected number of drilling attempts needed in order to find a productive well? what is the probability that the first productive well is found on the third attempt? if the prospector can only afford to drill five holes, what is the probability that the prospector will fail to find a productive well
The oil prospector drills wells with a success probability of 0.15. The probability of finding the first productive well in the third attempt is 0.108375 and the probability that the prospector fails to find productive well in the first 5 attempts is 0.26724 or 26.724%
Let Y be the number of drilling trials on which the prospector will find the first productive well. As Y is a geometric random variable with p=0.15 where p is the probability of being successful on any drilling. Let q = 1- p be the probability of being unsuccessful in drilling a well. q = 1 - 0.15 = 0.85
The probability that the first productive well is found on the third attempt is when outcomes are independent
P(Y=3) = q * q * p = 0.85^2* 0.15 = 0.108375
We want to find the probability that 5 wells are drilled and not a productive one is found. That is we need to find p(Y>5). Y is a binomial random variable with several wells drilled at most as n. Given n=5 and p=0.15, q = 0.85
We know the geometric probability is p(y) = \(q^{y-1}\)p
Then corresponding probabilities are added
p(Y≤ 5 ) = p(0) + p(1) +p(2) + p(3) +p(4) +p(5)= 0.73276
Using the complement rule:
p(Y>5) = 1 - p(Y≤5) = 1- 0.73276 = 0.26724 = 26.724 %
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/10
The price of the house decreases from $250,000 in 2005 to
$195,000 in 2010. What is the average rate of change for the
house each year?
Answer:
The average rate will be -11000 dollars per year.
Step-by-step explanation:
The price of a house in 2005 = $250,000
The price of a house in 2010 = $195,000
at x₁ = 2005, f(x₁) = 250,000
at x₂ = 2010, f(x₂) = 195,000
Using the formula to determine the average rate of change for the
house each year.
Average rate = [f(x₂) - f(x₁)] / [ x₂ - x₁]
= [195,000 - 250,000 ] / [2010-2005]
= -55000 / 5
= -11000
Therefore, the average rate will be -11000 dollars per year.
Ex: Solve by reduction of order: 1) y ′′
+16y=0 given y 1
=cos4x
The general solution to the differential equation y'' + 16y = 0 is y(x) = (c₁ + c₂) * cos(4x)
To solve the differential equation y'' + 16y = 0 using reduction of order, we'll assume a second solution of the form y₂(x) = u(x) * y₁(x), where y₁(x) is a known solution and u(x) is an unknown function.
Given y₁(x) = cos(4x), we'll differentiate it to find y₁'(x) and y₁''(x):
y₁'(x) = -4sin(4x)
y₁''(x) = -16cos(4x)
Now we substitute y₂(x) = u(x) * y₁(x) into the original differential equation:
y'' + 16y = 0
(-16cos(4x)) + 16(u(x) * cos(4x)) = 0
Simplifying the equation:
-16cos(4x) + 16u(x) * cos(4x) = 0
cos(4x)(-16 + 16u(x)) = 0
For this equation to hold for all values of x, we must have (-16 + 16u(x)) = 0.
Solving for u(x):
-16 + 16u(x) = 0
16u(x) = 16
u(x) = 1
Now we have the second solution:
y₂(x) = u(x) * y₁(x)
y₂(x) = 1 * cos(4x)
y₂(x) = cos(4x)
Therefore, the general solution to the differential equation y'' + 16y = 0 is:
y(x) = c₁ * y₁(x) + c₂ * y₂(x)
y(x) = c₁ * cos(4x) + c₂ * cos(4x)
y(x) = (c₁ + c₂) * cos(4x)
Where c₁ and c₂ are arbitrary constants.
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....................
Answer:
2/6
Step-by-step explanation:
A has the coordinates (-4, 3) and B has the
coordinates (4, 4). If Do,1/2(x, y) is a dilation of AABC,
what is true about the image AA'B'C'? Check all that
apply.
If \($D_{o,\frac{1}{2}} \frac{1}{2} (x, y)\) exists a dilation of △ ABC, the facts regarding the image
△A'B'C' exist AB exists parallel to A'B'.
What is a coordinate plane?Any point in the coordinate plane exists directed by a point (x, y), where the x value exists the position of the point with respect to the x-axis, and the y value exists the position of the point with respect to the y-axis.
A dilation exists a transformation \($D_{o,k} \frac{1}{2} (x, y)\), with center O and a scale factor of k that exists not zero, that maps O to itself and any other point P to P'. The center O exists as a fixed point, P' exists as the image of P, and points O, P, and P' exist on the exact line.
In a dilation of \($D_{o,\frac{1}{2}} \frac{1}{2} (x, y)\), the scale factor, 1/2 exists mapping the original figure to the image in such a manner that the distances from O to the vertices of the image exist half the distances from O to the original figure.
Also, the size of the image exists half the size of the original figure.
If \($D_{o,\frac{1}{2}} \frac{1}{2} (x, y)\) exists a dilation of △ ABC, the facts regarding the image △A'B'C' exist AB is parallel to A'B'.
\($D_{o,k} \frac{1}{2} (x, y) = (\frac{1}{2} x, \frac{1}{2}y)\)
The distance from A' to the origin exists half the distance from A to the origin.
Therefore, the correct answer is option A). △ A'B'C' exist AB is parallel to A'B'.
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PLEASE HELP ILL GIVE YOU BRAINLIST !!! I DONT UNDERSTAND THIS
Answer:c=2 √1129 or c=−2 √1129
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
c^2=4516
Step 2: Take square root.
c=±√4516
c=2√1129 or c=−2√1129
triangle A’ B’ C’ is the image of triangle ABC
pls help i am so stuck!
The horizontal change from triangle ABC to triangle ABC include the following: A. right 5 units.
The vertical change from triangle ABC to triangle ABC include the following: C. down 2 units.
The translation rule in the standard format is: (x, y) → (x + 5, y - 2).
What is a translation?In Mathematics, the translation of a graph to the left is a type of transformation that simply means subtracting a digit from the value on the x-coordinate of the pre-image while the translation of a graph to the right is a type of transformation that simply means adding a digit to the value on the x-coordinate of the pre-image.
By translating the pre-image of triangle ABC horizontally right by 5 units and vertically down 2 units, the coordinate A of triangle ABC include the following:
(x, y) → (x + 5, y - 2)
A (3, 5) → (3 + 2, 5 - 2) = A' (5, 3).
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
A farmer was interested in determining how many grasshoppers were in his field. He knows that the distribution of grasshoppers may not be normally distributed in his field due to growing conditions. As he drives his tractor down each row he counts how many grasshoppers he sees flying away. After several rows he figures the mean number of flights to be 57 with a standard deviation of 12. What is the probability of the farmer will count 52 or fewer flights or 60 or more flights on average in the next 40 rows down which he drives his tractor?
Step-by-step explanation:
Please help I don’t understand this problem!
the second one √72= 8.48 and the square root of √83=9.11 pi^2 = 9.86
when you put this in order by the decimal you get
8.48, 8.7, 9.11, 9.25, 9.86 which is really √72, 8.7, √83, 9.25, pi^2
help please....................
A) mean = average. Find the total of the ages and dive by number of people:
19x 2 = 38
20x3= 60
21x1= 21
22x4 = 88
23x1=23
38 +60 +21+88+23= 230
230/ 11= 20.9
Mean = 20.9
B ) 1 more person makes the total 12 people. The mean becomes 22, so total of the ages would be 12x22= 264
Subtract the two totals 264 - 230 = 34
The person would be 34
Please answer this question - my sibling is bothering me about this question, I have school work to do, please answer. Urgent.
People are putting together goodie bags to sell for a fundraiser. They have 30 chocolate cupcakes, 24 brownies, and 40 chocolate chip cookies. What would be the greatest number of bags they could make if each bag is to have the same number of each kind of treat?
Thank you
Answer:
2 bags
Step-by-step explanation:
what you need to do is find the GCF or greatest common factor. which is a number they can all be divided by. 30 can be divided by 2 24 can be divided by 2 and 40 can be divided by 2. so in conclusion, in order to use every treat, and have an equal amount of treats in every bag, you can make 2 bags.
PLEASE HELP what is the vertex of the parabola? y + 1 = -1/4(x - 2)^2
Answer:
(2,-1)
Step-by-step explanation:
Rewrite in vertex form
y = -1/4(x-2)^2-1