Answer:
3x^2 + x -4
Step-by-step explanation:
add them together to get:
-2x^2 + 5x^2 +3x - 2x +3 -7
3x^2 + x - 4 this should be the answer
Answer:
3x^2 + x -4
Step-by-step explanation:
add them together to get:
-2x^2 + 5x^2 +3x - 2x +3 -7
3x^2 + x - 4 this should be the answer, if im right
An exhaustion pipe containing carbon monoxide has a volume of 4.75 liters at 109 kpa. how many grams of carbon monoxide are contained in the balloon if the temperature of the balloon is 73.0 c?
We need to use the ideal gas law equation: PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature. First, we need to convert the temperature from Celsius to Kelvin by adding 273.15. Therefore, 0.597 moles of CO are contained in the balloon if the temperature of the balloon is 73.0 c.
So the temperature is 346.15 K. Next, we can rearrange the ideal gas law equation to solve for n, the number of moles: n = PV/RT. Plugging in the given values, we get n = (109 kPa * 4.75 L)/(0.0821 L•atm/mol•K * 346.15 K) = 0.597 moles of CO. Finally, we can convert moles to grams using the molar mass of CO (28 g/mol): 0.597 moles * 28 g/mol = 16.7 grams of carbon monoxide in the balloon. We can conclude that the calculation of the amount of carbon monoxide in the exhaustion pipe depends on the volume, pressure, and temperature. We need to use the ideal gas law equation to calculate the number of moles of CO, and then convert it to grams using the molar mass.
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In its standardized form, the normal distribution has which of the following properties?
O A. It has a mean of 0 and a standard deviation of 1
O B. It has a mean of 1 and a variance of 0
© C. It cannot be used to approximate discrete probability distributions
O D. It has an area equal to 0 5.
The answer is A. The normal distribution in its standardized form has a mean of 0 and a standard deviation of 1. This means that the distribution is centered around 0, and the spread of the data is determined by the standard deviation of 1. This is useful in statistical analysis because it allows us to compare data from different distributions on a standardized scale.
The normal distribution is a continuous probability distribution that is often used in statistical analysis. It is characterized by a bell-shaped curve and is symmetrical around its mean. In its standardized form, the normal distribution has been transformed to have a mean of 0 and a standard deviation of 1. This transformation is achieved by subtracting the mean of the distribution from each data point and dividing by the standard deviation. This standardization allows us to compare data from different normal distributions on a standardized scale.
The normal distribution has many properties that make it useful in statistical analysis. It is often used as a model for many real-world phenomena, such as the distribution of human height, IQ scores, and many others. The normal distribution is also useful because it is well understood and has many mathematical properties that make it easy to work with.
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Consider the expression.
– (x + 3) – 2(4x – 3)
Which procedure correctly simplifies the expression?
A.
Step 1: –x + 3 – 8x + 6
Step 2: –9x + 9
B.
Step 1: –x – 3 – 8x – 3
Step 2: –9x – 6
C.
Step 1: –x – 3 – 8x – 6
Step 2: –9x – 6
D.
Step 1: –x – 3 – 8x + 6
Step 2: –9x + 3
Answer:
D
Step-by-step explanation:
Given
- (x + 3) - 2(4x - 3) ← distribute both parenthesis
step 1
= - x - 3 - 8x + 6 ← collect like terms
step 2
= - 9x + 3
PLEASE HELP ME!!! I need the answer quick please if you can!
Answer:
angle 1 is 145°
Step-by-step explanation:
this is because à horizontal line is always 180° so you jus have to subtract 35 from 180
Convert the polar equation to rectangular form and sketch its graph.
r = 6 cos θ
The given polar equation is r = 6 cos θ. Converting it to rectangular form, we get x = 6 cos θ and y = 6 sin θ. The graph of this equation will be a cardioid centered at the origin, with a radius of 6.
To convert the polar equation r = 6 cos θ to rectangular form, we can use the trigonometric identities x = r cos θ and y = r sin θ. Substituting the values, we get x = 6 cos θ and y = 6 sin θ. These equations represent the coordinates (x, y) in terms of the angle θ.
To sketch the graph, we can observe that the equation x = 6 cos θ represents a horizontal line that oscillates between -6 and 6 as θ varies. Similarly, the equation y = 6 sin θ represents a vertical line that oscillates between -6 and 6 as θ varies.
Combining these equations, we can plot the graph by taking various values of θ and computing the corresponding (x, y) coordinates. The resulting graph will be a cardioid, which is a heart-shaped curve centered at the origin, with a radius of 6 units. The curve starts at the point (6, 0), moves upward, forms a loop, and returns to the point (-6, 0) before completing the loop.
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How do we apply a primitive procedure to its arguments?
When applying a primitive procedure to its parameters in programming, the procedure to be applied and the arguments it should be applied to are normally specified using the syntax of the programming language.
Depending on the programming language being used, the precise syntax for applying a primitive procedure may differ, but generally speaking, it entails writing the name of the procedure followed by the inputs that it to be applied to, contained in parentheses.
For instance, in the Python programming language, you might use the syntax shown below to apply the primitive procedure print to the string argument "Hello, world!". The syntax would be:
print("Hello, world!")
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what is the measure indicated in the parallelogram
Answer:
? = 74°
Step-by-step explanation:
• in a parallelogram, consecutive angles sum to 180° , that is
? + 106° = 180° ( subtract 106° from both sides )
? ( ∠ G ) = 74°
Reverse the order of integration in the integral I = integral_0^2 integral_x/2^1 f (x, y) dy dx, but make no attempt to evaluate either integral. a. I = integral_0^2 integral_y/2^1 f(x, y) dx dy b. I = integral_0^1 integral_0^2y f(x, y) dx dy c. I = integral_0^1 integral_2y^2 f(x, y) dx dy d. I = integral_0^1 integral_y^2 f(x, y) dx dy e. I = integral_0^2 integral_1^y f(x, y) dx dy f. I = integral_0^2 integral_0^y/2 f(x, y) dx dy
Option (A), I = integral_0^2 integral_y/2^1 f(x, y) dx dy. We integrate over y first, from 0 to 2x, and then over x from 0 to 2.
To reverse the order of integration in the given integral I = integral_0^2 integral_x/2^1 f (x, y) dy dx, we need to first sketch the region of integration. This can be done by plotting the line y=2x and the boundaries x=0 and x=2. The region of integration is a triangular shape with vertices at (0,0), (2,0), and (2,4).
To reverse the order of integration, we need to integrate over y first and then x. This means we need to find the limits of integration for y. Since the region is bounded by the line y=2x, the limits of integration for y will be from y=0 to y=2x.
Thus, the answer is option a. I = integral_0^2 integral_y/2^1 f(x, y) dx dy. We integrate over y first, from 0 to 2x, and then over x from 0 to 2.
It is important to note that reversing the order of integration does not change the value of the integral, only the way it is evaluated.
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A 63 sqm. Office space is in need of new tiles for it to resume work. The unit cost of a certain tile is P300 and a labor cost 100% of the materials. How much is the Total cost of the materials and labor?
The total cost of materials and labor for the office space, considering a tile unit cost of P300 and labor cost equal to the materials cost, amounts to P63,000.
To calculate the total cost of materials and labor, we first need to determine the cost of the tiles. Given that the unit cost of a certain tile is P300, we can multiply this by the area of the office space to find the total cost of the tiles. The office space has an area of 63 sqm, so the total cost of the tiles is P300 * 63 = P18,900.
Next, we need to calculate the labor cost, which is 100% of the materials cost. Since the materials cost is P18,900, the labor cost will be equal to P18,900. Therefore, the total cost of labor is also P18,900.
To find the total cost of materials and labor, we add the cost of the tiles (P18,900) and the labor cost (P18,900): P18,900 + P18,900 = P37,800.
Therefore, the total cost of materials and labor for the office space is P37,800.
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What is the value of |238| + |−28| − |−14|?
A 224
B 196
C 280
D 252
Answer:
D
Step-by-step explanation:
av= absolute value
av of 238 = 238
av of -28 = 28
av of -14 = 14
238 (+) 28 (-) 14 = 252
238 + 28 = 266
266 - 14 = 252
therefore 252 is the correct answer
hope this helped ^^
Why does Charli fan pages hate on Addison fan pages?
Answer:
itss the internet wht do u expect
write the algebraic expression that represents the following
b. Five less than the quotient of nine and a number
c. One half of the sum of six times a number and twenty-two
d. Nine less than twice the difference between a number and seven
e. Eleven less than a number squared
Answer:
9x -5
1/2(6x +22)
2(x-7)-9
x2 -11
91 is 70% of what number?91 is 70% of what number?
Answer: 91 is 70% of 130
Step-by-step explanation:
:)
Answer:
130
Step-by-step explanation:
70% of 130 = 91
Devils Lake, North Dakota, has a layer of sedimentation at the bottom of the lake that increases every year. The depth of the sediment layer is modeled by the function
D(x) = 20+ 0.24x
where x is the number of years since 1980 and D(x) is measured in centimeters.
(a) Sketch a graph of D.
(b) What is the slope of the graph?
(c) At what rate (in cm) is the sediment layer increasing per
year?
What is m
O M ZABC = 60°
OM ABC = 67°
OM ZABC = 120°
O M ABC = 127°
Answer:
∠ ABC = 127°
Step-by-step explanation:
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
∠ ABC is an exterior angle of the triangle , then
∠ ABC = ∠ BDC + ∠BCD = 60° + 67° = 127°
We know that we have a triangle and we want to find the value of its angle which will be given by 53°.
We know that the sum of all the interior angles of a triangle must equal 180 degrees, so we find then:
\(ABC=180\)
Now making the sum of the angles already known and equating to 180, we find that:
\(180=67+60+x\\x=180-127\\x= 53\)
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At the city museum, child admission is $6.30 and adult admission is $9.50. On Thursday, 160 tickets were sold for a total sales of $1302.40. How many adult tickets were sold that day? Number of adult tickets:
Taking into account the definition of a system of linear equations, on Thursday 92 adult tickets were sold.
System of linear equationsA system of linear equations is a set of two or more equations of the first degree, in which two or more unknowns are related.
Solving a system of equations consists of finding the value of each unknown, so that all the equations of the system are satisfied.
This caseIn this case, a system of linear equations must be proposed taking into account that:
"a" is the number of adult's tickets sold."c" is the number of child's tickets sold.You know:
Child admission is $6.30 and adult admission is $9.50.On Thursday, 160 tickets were sold for a total sales of $1302.40.So, the system of equations to be solved is
a + c= 160
6.30c + 9.50a= 1302.40
There are several methods to solve a system of equations, it is decided to solve it using the substitution method, which consists of clearing one of the two variables in one of the equations of the system and substituting its value in the other equation.
In this case, isolating the variable "c" from the first equation:
c= 160 - a
Substituting this expression in the second equation:
6.30× (160 -a) + 9.50a= 1302.40
Solving:
6.30×160 -6.30a + 9.50a= 1302.40
1008 -6.30a + 9.50a= 1302.40
-6.30a + 9.50a= 1302.40 - 1008
3.2a= 294.4
a= 294.4 ÷3.2
a= 92
Finally, that day 92 adult tickets were sold.
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Help me please I am in need
At 1 hour, 3 hours and 6.5 hours she travels 36 miles, 108 miles and 234 miles respectively using the concept of average speed of an object.
As per the question statement, Clare covers a distance of 0 miles, 72 miles, 144 miles and 216 miles in 0 hours, 2 hours, 4 hours and 6 hours respectively.
We are supposed to find out the distance travelled by her in 1 hour, 3 hours and 6.5 hours.
We will use the concept of average speed of an object which is as follows
average speed = total distance divided by the total time taken
average speed = 216/6 = 36 miles per hour
Hence at 1 hour, distance = 1 * 36 = 36 miles
at 3 hours, distance = 3 * 36 =108 miles
at 6.5 hours, distance = 6.5 * 36 = 234 miles
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WILL GIVE BRAINLEST ANSWER IF DONE IN 24 HRS Two forces with magnitudes of 150 and 100 pounds act on an object at angles of 40° and 170°, respectively. Find the direction and magnitude of the resultant force. Round to two decimal places in all intermediate steps and in your final answer.
Answer: Resultant force = 114.96 pounds at angle 81.76°
Answer: magnitude = 114.96 lbs, direction = 88.21°
Step-by-step explanation:
Vector A: 150 lbs at 40°
Vector B: 100 lbs at 170°
Slide Vector B onto Vector A so you have a head to tail connection.
Calculate the angle between the vectors (50°).
Use Law of Cosines to find the magnitude of the resultant vector.
Use Law of Sines to find the direction of the resultant vector.
Law of Cosines: c² = a² + b² - 2ab cos θ
Given: a = 150, b = 100, C = 50°
c² = (100)² + (150)² - 2(100)(150) cos 50°
c = 114.96
Law of Sines:
\(\dfrac{\sin A}{a}=\dfrac{\sin C}{c}\\\\\text{Given: a=150, c=114.96, C=50}^o\\\\\\\dfrac{\sin A}{150}=\dfrac{\sin 50^o}{114.96}\\\\\\\sin A=\dfrac{150\sin 50^o}{114.96}\\\\\\A=\sin^{-1}\bigg(\dfrac{150\sin 50^o}{114.96}\bigg)\\\\\\A=88.21^o\)
consider the vector field. f(x, y, z) = 2ex sin(y), 8ey sin(z), 3ez sin(x) (a) find the curl of the vector field.
The curl of the vector field F = 2e^x sin(y)i + 8e^y sin(z)j + 3e^z sin(x)k is given by curl(F) = (cos(x) + 2)j - (3cos(x) - 2e^z)k.
To find the curl of a vector field, we need to compute the cross product of the del operator (∇) with the vector field. The del operator in Cartesian coordinates is given by ∇ = ∂/∂x i + ∂/∂y j + ∂/∂z k.
Let's calculate the curl of the vector field F:
curl(F) = (∇ x F)
Using the del operator, we can calculate the cross products of the del operator with the vector field components:
∇ x (2e^x sin(y)i) = (∂/∂y(2e^x sin(y)) - ∂/∂z(2e^x sin(y)))j + (∂/∂z(2e^x sin(y)) - ∂/∂x(2e^x sin(y)))k
= (2e^x cos(y))j - 0k
= 2e^x cos(y)j
∇ x (8e^y sin(z)j) = (∂/∂z(8e^y sin(z)) - ∂/∂x(8e^y sin(z)))k + (∂/∂x(8e^y sin(z)) - ∂/∂y(8e^y sin(z)))i
= (8e^y cos(z))k - 0i
= 8e^y cos(z)k
∇ x (3e^z sin(x)k) = (∂/∂x(3e^z sin(x)) - ∂/∂y(3e^z sin(x)))i + (∂/∂y(3e^z sin(x)) - ∂/∂z(3e^z sin(x)))j
= 0i - (3e^z cos(x))j
= -3e^z cos(x)j
Adding these results together, we get:
curl(F) = 2e^x cos(y)j + 8e^y cos(z)k - 3e^z cos(x)j
= (cos(x) + 2)j - (3cos(x) - 2e^z)k
Therefore, the curl of the vector field F is given by curl(F) = (cos(x) + 2)j - (3cos(x) - 2e^z)k.
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Please don’t judge me please if I don’t know
Answer:
X intercepts are found when y is equal to zero.
0=2x+4
2x= -4
2x/2= -4/2
x= -2
Hopefully this helps!
Can someone help me ASAP it’s due tomorrow. I will give brainliest if it’s all done correctly. Show work.
Explanation:
The probability of snow on any given day in January is 58%
We can re-interpret this to mean that about 58% of the days in January will likely get snow. If this pattern keeps up, then it's estimated 58% of the 28 days in February would also get snow.
58% of 28 = 0.58*28 = 16.24 which rounds to 16
The American Water Works Association reports that the per capita water use in a single-family home is 76 gallons per day. Legacy Ranch is a relatively new housing development. The builders installed more efficient water fixtures, such as low-flush toilets, and subsequently conducted a survey of the residences. Twenty-seven owners responded, and the sample mean water use per day was 71 gallons with a standard deviation of 9.5 gallons per day. At the 0.01 level of significance, is that enough evidence to conclude that residents of Legacy Ranch use less water on average
Answer:
Yes, that is enough statistical evidence to suggest to conclude that residents of Legacy Ranch use less water on average
Step-by-step explanation:
The data given by the American Water Works Association are;
The per capita water use in a single-family home, μ = 76 gallons per day
The number of responders in the sample, n = 27
The sample mean water used by the sample, \(\overline x\) = 71 gallons
The standard deviation, s = 9.5 gallons per day
The level of significance, α = 0.01
The test statistics is given as follows;
The null hypothesis, H₀; μ ≥ 76 gallons
The alternative hypothesis, Hₐ; μ < 76 gallons
\(t=\dfrac{\bar{x}-\mu }{\dfrac{s}{\sqrt{n}}}\)
Therefore, we have;
\(t=\dfrac{71-76 }{\dfrac{9.5}{\sqrt{27}}} \approx -2.734817\)
At n - 1 = 27 - 1 = 26 degrees of freedom, the critical-t = 2.5
From the test statistic, of t ≈ -2.734817, the p-value < 0.01, and from a graphing calculator, the p-value is given as Prob = 0.005544418
Therefore, given that the p-value is less the significant level, and less than 0.01, is therefore statistically significant, and therefore, there is sufficient statistical evidence against the null hypothesis, therefore we reject the null hypothesis, and there is enough statistical evidence to suggest to conclude that residents of Legacy Ranch use less water on average.
800 children a day ride on the roller coaster, but another 200 are turned away because they're not tall enough. What proportion of the total number of children are turned away?
A) Half are turned away
B) One quarter are turned away
C) One fifth are turned away
Answer:
Step-by-step explanation:
C
Answer:
B
Step-by-step explanation:
A cone-shaped paper drinking cup is to be made to hold 36 cm3 of water. Find the height and radius of the cup (in cm) that will use the smallest amount of paper. (Round your answers to two decimal places.) height cm radius cm
The height and radius of the cup are 4.41 cm and 2.07 cm respectively
To minimize the amount of paper used, we need to minimize the surface area of the cup. Let h be the height and r be the radius of the cone. Then we have:
\(Volume of cone = \frac{1}{3} πr^{2} h = 36 cm^{3}\)
Solving for h, we get:
\(h = \frac{108}{(πr^2)}\)
Now we can express the surface area of the cone as:
\(Surface area = πr^2+ πr\sqrt{r^{2}+h^{2} }\)
Substituting the expression for h, we get:
\(Surface area = πr^2+πr \sqrt{(r^{2} +(\frac{108}{(πr^2)^{2}) } )}\)
To minimize this function, we take its derivative with respect to r and set it equal to zero:
\(\frac{d}{dx} (Surface area) = \frac{2πr - 108r }{[(r^2+(\frac{108}{πr^2}))^{0.5} }] - \frac{108π}{r^2 } = 0\)
Simplifying, we get:
\(2r^3 - \frac{108^2}{π} = 0\)
Solving for r, we get:
\(r = (\frac{54}{π})^{\frac{1}{3} }\)
Substituting this value into the expression for h, we get:
\(h = \frac{108}{\frac{54}{π} ^{(\frac{2}{3}π )} }\)
Thus, the height and radius of the cup that will use the smallest amount of paper are:
height = 4.41 cm
radius = 2.07 cm (rounded to two decimal places)
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Can ΔTSR and ΔQRS be proven congruent by SAS?
yes, because along with the given information on the diagram, SR ≅ RS by the reflexive property
yes, because a reflection will map ΔTSR onto ΔQRS
yes, because P appears to be the midpoint of SQ and TR
no, because not enough is information given to prove the triangles congruent by SAS
Answer:
d. No, because not enough is information given to prove the triangles congruent by SAS
Step-by-step explanation:
It doesnt give u measures of some important angles. I also got it right
Answer:
D. no, because not enough is information given to prove the triangles congruent by SAS
Step-by-step explanation:
edge2021
I want some Mathematics questions about ratio and proportion
Answer:
Mel fills his gas tank up with 6 gallons of premium unleaded gas for a cost of $26.58. How much would it cost to full an 18 gallon tank?
or
Jacob ran 10 miles in 80 minutes. At that rate how far would he run in 2.5 hours?
A public company provides you the following data: Qualified SRED Expenses for this current year: $10,000 Last year's Taxable Loss: ($50,000) This year's part I tax before SRED is $1,500 The SRED Credit remainder after applying the maximum SRED Credit for this year is?
MCQ
$50
$100
$0
$1,500
The SRED Credit remainder after applying the maximum SRED Credit for this year is $0. This means that the company has fully utilized the maximum SRED credit available for the current year.
The Scientific Research and Experimental Development (SRED) program is a tax incentive program offered to companies for conducting eligible research and development activities. The SRED credit is calculated based on the qualified SRED expenses incurred during the year.
In this scenario, the company has qualified SRED expenses of $10,000 for the current year. However, the SRED credit remainder is determined after applying the maximum SRED credit for the year. The maximum SRED credit represents the maximum allowable amount that can be claimed as a credit.
Since the SRED Credit remainder is $0, it indicates that the company has already utilized the maximum SRED credit available for this year. Therefore, there is no remaining credit to be applied, and the company will not receive any additional credit for its qualified SRED expenses.
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HELP HELP HELPPPO!!!! SHOW ALL WORK PLEASE
Step-by-step explanation:
Using Pythagorean theorem for right triangles, c^2 = a^2 + b^2 .
Solving for a results in a = sqrt ( c^2 - b^2) .
Solving for b results in b = sqrt (c^2 - a^2) .
Solving for c results in c = sqrt (a^2 + b^2)
Answer:
Step-by-step explanation:
I am supposing that this is a right triangle.
1) Length of side a
a² + b² = c²
a² = c² - b²
√a² = \(\sqrt{c^{2} - b^{2} }\)
2)
a² + b² = c²
b² = c² - a²
√b² = \(\sqrt{c^{2} - a^{2} }\)
3
a² + b² = c²
\(\sqrt{a^{2} + b^{2} }\) = \(\sqrt{c^{2} }\)
Which of the following terms describe the relationship between the number of notes and each syllable of a text and which do not?
-syllabic
-melismatic
-neumatic
The terms syllabic, melismatic, and neumatic are all related to the number of notes in relation to each syllable of a text. Syllabic means that each syllable of the text is sung to one note.
This is the simplest type of setting for text to music. In contrast, melismatic means that each syllable of the text is sung to many notes, creating a more intricate and ornamental melody. Neumatic is somewhere in between syllabic and melismatic, where each syllable is sung to a few notes, but not as many as in a melismatic setting.
Syllabic, melismatic, and neumatic all describe the relationship between the number of notes and each syllable of a text.
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given the vertex and a point on a given parabola, find the equation that represents this parabola in standard form. enter your answer in the form
Use the point to find the value of either a or p depending on the orientation of the parabola. Substitute the values of h, k, and a or p into the standard form equation of a parabola to get the equation of the parabola in standard form.
The main answer is:Assuming that the orientation of the parabola is upward, the equation of the parabola in standard form is (y - k) = a(x - h)². Given the vertex and a point on a parabola, the coordinates of the vertex are (h, k). Let the point on the parabola be (x₁, y₁).We have h, k, x₁, and y₁. Our next step is to find the value of a using the point (x₁, y₁). Since the orientation of the parabola is upward, the value of a is positive.
This distance is also equal to the distance between (x₁, y₁) and the directrix. Hence,d = |y₁ - p|, where p is the distance between the vertex and the directrix.Since the vertex is the midpoint between the focus and the directrix, then the distance between the vertex and the focus is also p. Therefore, 4p = |y₁ - k|². This is because the distance between the vertex and the focus is equal to four times the distance between the vertex and the directrix.
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