The interval 12.3 < p < 31.2 is a 98% confidence interval for the widget width, indicating that we can be 98% confident that the true population mean falls within this range based on the student's sample data of size n = 21.
The interval 12.3 < p < 31.2 is a 98% confidence interval for the widget width based on the student's sample of size n = 21.
Interpreting this confidence interval means that we can be 98% confident that the true population parameter, the mean widget width (p), falls between 12.3 and 31.2.
This confidence level suggests that if we were to take multiple random samples and calculate confidence intervals using the same method, approximately 98% of those intervals would capture the true population mean.
In other words, the student's sample data suggests that the true widget width has a high likelihood of falling within the range of 12.3 to 31.2 units.
However, it's important to note that this interpretation does not guarantee that the true value of the widget width is within this interval.
It simply provides a range of plausible values based on the sample data and the chosen confidence level.
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Historical data indicated that the time students took to complete their CML quizzes could be modelled as a normal distribution with a variance of 123.7 minutes squared. A random sample of 37 students revealed a mean time of 439 minutes. Determine a 94% confidence interval for the average time students take to complete their CML quiz. State the lower bound of this interval (in minutes) to 2 decimal places
The 94% confidence interval for the average time students take to complete their CML quiz can be determined using the sample mean, sample size, and the given variance.
To calculate the confidence interval, we can use the formula:
Confidence Interval = sample mean ± (critical value) * (standard deviation / sqrt(sample size))
First, we need to find the standard deviation, which is the square root of the variance:
Standard Deviation = sqrt(123.7) = 11.11
Next, we find the critical value corresponding to a 94% confidence level. Since the sample size is large (n > 30), we can use the Z-distribution. For a 94% confidence level, the critical value is approximately 1.88.
Substituting the values into the formula:
Confidence Interval = 439 ± (1.88) * (11.11 / sqrt(37))
Calculating the confidence interval, we get:
Confidence Interval ≈ 439 ± 3.32
Therefore, the lower bound of the confidence interval is:
Lower bound ≈ 439 - 3.32 = 435.68 minutes (rounded to 2 decimal places).
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Which expression is equivalent to
Answer:
Step-by-step explanation:
the first expression
What is the Quartile 1 for the Box & Whisker Plot below?
PLSS HELP
Answer:
17
Step-by-step explanation:
The lower quartile Q₁ is positioned at the left side of the box.
The value at the left is Q₁ is 17
PLS HELP WITH WORKINGSSSSSSSS
Answer:
60°
Step-by-step explanation:
90°-30°…
according to your question
pls help im pretty sure its easy i just forgot
the average can be calculated by adding the scores together and then dividing by the number of scores.
we can set up an equation:
let x = test score needed on next test
(72+72+80+x)/4 = 71
multiply both sides by 4
72+72+80+x = 284
add like terms
224+x=284
subtract 224 from both sides
x=60
she will need a 60 for her average to be 71
She needs to score a 60 to have a average score of 71,
72+72+80+60=284
284/4=71
please solve for x!!!
Answer:
x = 20
Step-by-step explanation:
The two angles are verticals angles and vertical angles are equal
7x -99 = 2x+1
Subtract 2x from each side
7x-99-2x =2x+1-2x
5x-99 =1
Add 99 to each side
5x-99+99 = 1+99
5x =100
Divide each side by 5
5x/5 =100/5
x = 20
Answer:
x=20
set them equal to eac hother
7x-99=2x+1
-2x+99-2x+99
---------------------
5x=100
---- ------
5 5
x=20
Let M = {a E Ra > 1). Then M is a vector space under standard addition and scalar multiplication of real numbers. False True * Let W = {a + 2x + bx² € Pz: a, b E R} with the standard operations in P2. Which of the following statements is true? 1+xEW W is a subspace of P2. The above is true W is not a subspace of P.
The statement "W is a subspace of P2" is true because the set W, defined as W = {a + 2x + bx² ∈ P2: a, b ∈ R}, is a subspace of P2.
To determine if the set W = {a + 2x + bx² ∈ P2: a, b ∈ R} is a subspace of P2, we need to check if it satisfies three conditions: closure under addition, closure under scalar multiplication, and contains the zero vector.
Closure under addition: For any two polynomials p(x) = a + 2x + bx² and q(x) = c + 2x + dx² in W, their sum p(x) + q(x) = (a + c) + 4x + (b + d)x² is also a polynomial in W. This shows that W is closed under addition.
Closure under scalar multiplication: For any polynomial p(x) = a + 2x + bx² in W and any scalar c, the scalar multiple c * p(x) = ca + 2cx + cbx² is also a polynomial in W. Therefore, W is closed under scalar multiplication.
Contains the zero vector: The zero vector in P2 is the polynomial 0x² + 0x + 0, which can be expressed as a + 2x + bx² with a = 0 and b = 0. Since this polynomial satisfies the conditions of W, W contains the zero vector.
Since W satisfies all three conditions, it is a subspace of P2.
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One angle measures 19° and another angle measures (4d − 9)°. If the angles are complementary, what is the value of d?
d = 7
d = 20
d = 25
d = 42.5
Answer:
d = 20
Step-by-step explanation:
90-19 = 71
(4d-9) = 71
4d = 80
d = 20
Answer:
d = 20
Step-by-step explanation:
Complementary angles are two angles that add up to 90°.
We know that one angle is 19° and the other is (4d − 9)°. So, we can set up the equation:
19 + (4d − 9) = 90.
Solving for d, we get:
19 + (4d − 9) = 90
19 + 4d − 9 = 90
4d + 10 = 90
4d = 80
d = 20
Therefore, the value of d is 20.
The students in a club are selling flowerpots to raise money.Each flowerpot sells for $15.
Part A
Write an expression that represents The total amount of money, in dollars, The students raise from selling flowerpots.
Answer your expression in the box provided. Enter only your expression.Please hurry!
Answer:
y = 15x
Step-by-step explanation:
For every flower pot purchased (y), the quantitity of the price (x) will go up by $15.
Answer:
y = 15x
Step-by-step explanation:
HELP HELP PLEASE WRING ANSWERS OR LINKS WILL BE REPORTED
Answer:
$0.24 per orange
Step-by-step explanation:
$3.84 / 16 = 0.24
If the coefficient of determination is 0.422, what percentage of the variation in the data
about the regression line is unexplained?
2 pts
42.2%
17.8%
82.2%
57.8%
The percentage of the variation in the data about the regression line that is unexplained is 100% - 42.2% = 57.8%. So, the correct option is D, 57.8%.
If the coefficient of determination is 0.422, the percentage of the variation in the data about the regression line that is unexplained is 57.8%. Coefficient of determination, denoted by R² is a statistical tool that measures how well the regression line approximates the real data points. It is also called the square of the correlation coefficient between the dependent and independent variables.
The coefficient of determination varies from 0 to 1, and it represents the proportion of the total variation in the dependent variable that is explained by the variation in the independent variable. A coefficient of determination of 0.422 indicates that the regression line explains only 42.2% of the total variation in the dependent variable. Hence, the percentage of the variation in the data about the regression line that is unexplained is 100% - 42.2% = 57.8%.
Therefore, the correct option is D, 57.8%.
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Is 3. [3 marks] Use Gauss Divergence theorem to calculate S (5xi + ay 3 – 23 k).n dA over the sphere S: 1+ y + x2 = 9. splats J = ?? It-t? Lose - 2. [6 marks] Calculate the surface integral || G(r)da, where G = (1212 + 36)/2, the suru loob the parametrization r(u, v) = (3u, 2v, u), and 0 su 1, 0 Sv < 2.
1. Using Gauss Divergence theorem, we have to calculate S. (5xi + ay3 - 23k). ndA over the sphere S: 1+ y + x2 = 9. We have the following information: S.(5xi + ay3 - 23k).ndA over the sphere S: 1+ y + x2 = 9.
Gauss Divergence Theorem states that, The surface integral of a vector field F over a closed surface S equals the volume integral of the divergence of F over the enclosed volume V. To calculate the surface integral S.(5xi + ay3 - 23k).ndA, we need to first calculate the volume integral of the divergence of the vector field over the enclosed volume V which in this case is a sphere.
The divergence of the given vector field can be calculated as, div(F) = ∂P/∂x + ∂Q/∂y + ∂R/∂z = 5 + 3ay + 0 = 5 + 3ay
Thus, the volume integral of the divergence of F over the sphere S: 1+ y + x2 = 9 is given as ∭V div(F) dV = ∭V (5 + 3ay) dV.
The volume integral can be calculated using spherical coordinates.
We have the equation of the sphere as 1 + y + x2 = 9, substituting x = r sin θ cos φ, y = r sin θ sin φ, z = r cos θ, and simplifying, we get the limits of integration as 0 ≤ r ≤ 2, 0 ≤ θ ≤ π, and 0 ≤ φ ≤ 2π.
Therefore, the volume integral becomes:∭V div(F) dV = ∭V (5 + 3ay) dV = ∫0^2 ∫0^π ∫0^2π (5 + 3a(r cos θ sin φ)) r2 sin θ dr dθ dφ = 60πa
The surface integral of F over the sphere S can be calculated using the Gauss Divergence Theorem, which states that the surface integral of F over a closed surface S is equal to the volume integral of the divergence of F over the enclosed volume V.
Thus, S.(5xi + ay3 - 23k).ndA = ∭V div(F) dV = 60πa
Answer: S.(5xi + ay3 - 23k).ndA = 60πa2.
We are to calculate the surface integral ∬S G(r) da, where G = (12 + 12 + 36)/2 = 30.
The surface is given by r(u, v) = (3u, 2v, u), 0 ≤ u ≤ 1 and 0 ≤ v ≤ 2.
The surface area element da can be calculated as, da = |r/∂u x r/∂v| dudv = |(6, 0, 3) x (0, 2, 1)| dudv = |(-6, -3, 0)| dudv = 3 dudv
Hence, the surface integral ∬S G(r) da becomes ∬S G(r) da = ∫0^2 ∫0^1 G(r(u, v)) da = ∫0^2 ∫0^1 30 * 3 dudv = 180
Answer: ∬S G(r) da = 180
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A stone is dropped from the upper observation deck of a tower, 900 m above the ground. (Assume g=9.8 m/s2.) (a) Find the distance (in meters) of the stone above ground level at time t, h(t)= (b) How long does it take the stone to reach the ground? (Round your answer to two decimal places.) (c) With what velocity does it strike the ground? (Round your answer to one decimal place.) m/s (d) If the stone is thrown downward with a speed of 3 m/s, how long does it take to reach the ground? (Round your answer to two decimal places.)
After considering the given data we conclude that the distance between stone and ground level [tex]h(t) = -4.9t^2 + 900[/tex], time taken for the stone to reach the ground 18.22 seconds,the velocity with which it strikes the ground 178.76 m/s, if thrown with a down ward speed of 3m/s then the duration needed is 18.47 seconds.
A stone is dropped from the upper observation deck of a tower, 900 m above the ground. We can use the kinematic equations of motion to answer the following questions:
a) The distance of the stone above ground level at time t can be found using the equation:
[tex]h(t) = -1/2gt^2 + v_0t + h_0[/tex]
where g is the acceleration due to gravity (9.8 m/s²), v0 is the initial velocity (0 m/s), h0 is the initial height (900 m), and t is the time elapsed. Plugging in the values, we get:
[tex]h(t) = -4.9t^2 + 900[/tex]
b) To find how long it takes for the stone to reach the ground, we need to find the time when h(t) = 0:
[tex]-4.9t^2 + 900 = 0[/tex]
Solving for t, we get:
[tex]t = \sqrt(900/4.9) = 18.22 seconds[/tex]
Therefore, it takes the stone 18.22 seconds to reach the ground.
c) To find the velocity with which the stone strikes the ground, we can use the equation:
[tex]v(t) = -gt + v_0[/tex]
where v(t) is the velocity at time t. Plugging in the values, we get:
[tex]v(t) = -9.8(18.22) + 0 = -178.76 m/s[/tex]
Therefore, the stone strikes the ground with a velocity of 178.76 m/s.
d) If the stone is thrown downward with a speed of 3 m/s, we can use the same equation [tex]v(t) = -9.8(18.22) + 0 = -178.76 m/s[/tex] to find how long it takes to reach the ground. This time, [tex]v_0[/tex] is -3 m/s (since it is thrown downward) and [tex]h_0[/tex] is still 900 m. Plugging in the values, we get:
[tex]-4.9t^2 - 3t + 900 = 0[/tex]
Solving for t, we get:
t = 18.47 seconds
Therefore, it takes the stone 18.47 seconds to reach the ground when thrown downward with a speed of 3 m/s.
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PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
Solve the given system of differential equations by systematic elimination.
(D − 1)x+ (D² + 1)y = 1
(D² − 1)x+ (D + 1)y = 2
(x(t), y(t)) = (e^-t/2 [-5/3cos(√47/2)t - 125/3 sin(√47/2)t]+ 20/3 cos (3t) + 20/3 sin (3t)
Given system of differential equation is(D − 1)x+ (D² + 1)y = 1 ...
(i)(D² − 1)x+ (D + 1)y = 2 ...(ii)By using systematic elimination method, we have(D²+1)(D²−1)x+(D+1)(D−1)y=D²+1×1-(D+1)×1=0Simplifying the above equation, we get(D⁴-1)x=-(D-1)y...(iii)Applying D on both sides of (iii), we get D(D⁴-1)x=-(D-1 )DyD⁵x- Dx=-(Dy-y)or D⁵x+Dy=y ... (iv)Now applying D on (i), we get(D−1)Dx+(D²+1)Dy=0or D(D²+1)y=(1-D)x ...(v)Now applying D on (ii), we get(D²−1)Dx+(D+1)Dy=0or D(D+1)x=(1+D)y ...(vi)Now, substituting the value of x and y from equations (v) and (vi) in equation (iv), we getD⁵x+(1+D)Dx=(1-D)Dy D⁵x+(1+D)Dx=-(1-D)x ...(vii) Simplifying the above equation, we getD⁶x+2D⁴x+D²x+x=0or D²(D⁴+1)x+D²x=-x ...(viii)or D²(D⁴+2)x=-xor D⁴x+2x=-xor D⁴x=-3xNow using D on both sides, we get D⁵x=-3Dxor D⁶x=-3D²x
Now, substituting the value of D²x from equation (iii) in equation (i), we get(D-1)x+(D²+1)y=1 ...(i)⇒ (D-1)x+y=1 ...(ix)Now, substituting the value of D²x from equation (iii) in equation (ii), we get(D²-1)x+(D+1)y=2 ...(ii)⇒ -(D+1)x+y=0or (D+1)x-y=0 ...(x)From equation (ix) and (x), we have2x=1or x=1/2Now, substituting the value of x in equation (ix), we have D(1/2)+y=1or y=1-1/2=1/2Thus, the solution of the given system of differential equation is(x(t), y(t))=(e^(-t/2))[(-5/3)cos((sqrt(47)/2)t)-(125/3)sin((sqrt(47)/2)t)]+(20/3)cos(3t)+(20/3)sin(3t), (1/2)
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AB
Round your answer to the nearest hundredth.
А
50°
6
12
B
Answer:
h = 7.832
Step-by-step explanation:
This is a right angled triangle so, taking 50 as reference angle,
hypotenuse = ?
perpendicular = 6
The ratio for p and h is given by
Sin 50 = p/h
Sin 50 = 6 /h
h = 6 / Sin 50
h = 7.832
PLSS HELPP D: WILL MARK BRAINLIEST :D
Answer:
√49
Step-by-step explanation:
It's a perfect square root.
Please brainliest ;)
A cube with an edge of length s has a volume of 27 units.
What is the length of s?
Answer:
s = 3
Step-by-step explanation:
The volume formula for a cube is V = s^3, where “s” is the edge length. Since we know the volume and need to find “s,” we just do the inverse operation for an exponent, which is a radical. The cubed root of 27 is 3, so there’s your answer! Hope this is helpful & accurate. Best wishes.
I WILL GIVE BRAINLIEST!!!
consider the polynomial function q(x)=-2x^8+5x^6-3x^5+50
end behavior
Answer:
Use the degree and the leading coefficient to determine the behavior.
Falls to the left and falls to the right
Step-by-step explanation:
Does anyone know a vb knowledge matters admin login?
I'm trying to complete the Sports & Entertainment Mogul
Answer:
Sadly no but also brainly isn't for this
Step-by-step explanation:
(Ima get so much hate rn from y'all)
Solve the following differential equation by using Laplace transform method. y" +2y' +y = cos2t where y(0)=1 y'(O)=1.
The solution to the given differential equation with the initial conditions y(0) = 1 and y'(0) = 1 is:
[tex]y(t) = -e^{-t}/10 + (11/10)t*e^{-t} + (1/10)cos(2t) + (3/10)sin(2t)[/tex]
To solve the given differential equation using Laplace transform, we will apply the Laplace transform to both sides of the equation and then solve for the transformed variable.
Let's denote the Laplace transform of y(t) as Y(s).
Taking the Laplace transform of both sides of the differential equation, we get:
[tex]s^2Y(s) + 2sY(s) + Y(s) = (s^2 + 2s + 1)/(s^2 + 4)[/tex]
Now, let's solve for Y(s):
[tex]Y(s)(s^2 + 2s + 1) = (s^2 + 2s + 1)/(s^2 + 4)\\Y(s) = (s^2 + 2s + 1)/(s^2 + 4)(s^2 + 2s + 1)[/tex]
Factoring the denominator:
[tex]Y(s) = (s^2 + 2s + 1)/((s + 1)^2(s^2 + 4))[/tex]
Now, we need to decompose the fraction into partial fractions. Let's express the numerator in terms of A, B, C, and D:
[tex]s^2 + 2s + 1 = A/(s + 1) + B/(s + 1)^2 + (Cs + D)/(s^2 + 4)[/tex]
To find the values of A, B, C, and D, we can equate the numerators:
[tex]s^2 + 2s + 1 = A(s + 1)(s^2 + 4) + B(s^2 + 4) + (Cs + D)(s + 1)^2[/tex]
Expanding and equating coefficients:
[tex]s^2 + 2s + 1 = A(s^3 + 5s^2 + 4s) + B(s^2 + 4) + (C(s^2 + 2s + 1) + D(s + 1)^2)[/tex]
Simplifying:
[tex]s^2 + 2s + 1 = (A + C)s^3 + (5A + C + D)s^2 + (4A + 2C + D)s + (4A + D)[/tex]
Equating coefficients:
A + C = 0 (coefficient of [tex]s^3[/tex])
5A + C + D = 1 (coefficient of [tex]s^2)[/tex]
4A + 2C + D = 2 (coefficient of s)
4A + D = 1 (constant term)
Solving these equations simultaneously, we find A = -1/10, B = 11/10, C = 1/10, and D = 3/10.
Now, substituting these values back into Y(s):
[tex]Y(s) = (-1/10)/(s + 1) + (11/10)/(s + 1)^2 + (1/10)(s + 3)/(s^2 + 4) + (3/10)/(s^2 + 4)[/tex]
To find y(t), we need to take the inverse Laplace transform of Y(s). Fortunately, we can use a Laplace transform table to find the inverse Laplace transform of each term.
The inverse Laplace transform of (-1/10)/(s + 1) is [tex]-e^{-t}/10.[/tex]
The inverse Laplace transform of (11/10)/(s + 1)² is (11/10)t*[tex]e^{-t}.[/tex]
The inverse Laplace transform of (1/10)(s + 3)/(s² + 4) is (1/10)cos(2t).
The inverse Laplace transform of (3/10)/(s² + 4) is (3/10)sin(2t).
Combining these results, the solution y(t) is:
[tex]y(t) = -e^{-t}/10 + (11/10)t*e^{-t} + (1/10)cos(2t) + (3/10)sin(2t)[/tex]
Therefore, the solution to the given differential equation with the initial conditions y(0) = 1 and y'(0) = 1 is:
[tex]y(t) = -e^{-t}/10 + (11/10)t*e^{-t} + (1/10)cos(2t) + (3/10)sin(2t)[/tex]
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Cost of a cell phone: $249.50
Markup: 30%
Answer:
$324.35
Step-by-step explanation:
249.50 x 1.30 = $324.35
Suppose sales of shoe companies follow normal distribution with unknown population mean and a known population standard deviation of 3. It is suspected that on an average the revenue of the shoe companies is $8 million. A random sample of 400 companies was taken and the sample average was found to be $8.30 million. We want to determine whether the average revenue is significantly different than $8 million. The critical value (upper) is_____________ therefore we can __________the Null at the 1% level of significance
2.33, reject
2.57, not reject
1.96, not reject
2.57, reject
The critical value (upper) for a 1% level of significance is 2.33. Therefore, we can reject the null hypothesis.
To determine whether the average revenue is significantly different from $8 million, we perform a hypothesis test using the sample data. The null hypothesis (H0) states that the average revenue is equal to $8 million, while the alternative hypothesis (Ha) states that the average revenue is significantly different.
Given a sample of 400 companies, the sample average revenue is found to be $8.30 million, and the population standard deviation is known to be 3. We can use a z-test since the population standard deviation is known and the sample size is large.
Next, we calculate the test statistic (z-score) using the formula: z = (sample mean - hypothesized mean) / (population standard deviation / √sample size).
Plugging in the values, we get z = (8.30 - 8) / (3 / √400) = 1.73.
To determine the critical value (upper) at a 1% level of significance, we look up the z-value from the standard normal distribution table, which is approximately 2.33.
Since the calculated z-score of 1.73 is less than the critical value of 2.33, we do not have enough evidence to reject the null hypothesis. Therefore, we cannot conclude that the average revenue is significantly different from $8 million at a 1% level of significance.
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find a rational number between 3/5 and 4/5 ( see I just only want one so please don't give me all five)
give me the process too
Thanks
Answer:
[tex]\dfrac{7}{10}[/tex]
Step-by-step explanation:
We need to find a rational number between 3/5 and 4/5.
We can find a rational number between two fractions as :
[tex]\dfrac{a+b}{2}[/tex]
We have, a = 3/5 and b = 4/5
So,
[tex]\dfrac{\dfrac{3}{5}+\dfrac{4}{5}}{2}\\\\=\dfrac{\dfrac{7}{5}}{2}\\\\=\dfrac{7}{10}[/tex]
So, a rational number between 3/5 and 4/5 is equal to 7/10.
The Taylor polynomial P, = (-10 * 9 about x = 0 is used to approximate the value of the function f at x=1 Find the value that verifies 5p (1)-(1)-500 n=1 n! Pa 1 384 1 384 0 ਤਕ OP PA 1 6144 PA 6144
The value that verifies 5p (1)-(1)-500 is -124.04
To approximate the value of the function f at x = 1 using the Taylor polynomial Pₙ = (-10)^n/ n! about x = 0, we need to find the value of P₅(1).
First, let's compute the derivatives of f(x) = e^x up to the fifth derivative:
f'(x) = e^x
f''(x) = e^x
f'''(x) = e^x
f''''(x) = e^x
f⁽⁵⁾(x) = e^x
Now, let's evaluate these derivatives at x = 0:
f(0) = e^0 = 1
f'(0) = e^0 = 1
f''(0) = e^0 = 1
f'''(0) = e^0 = 1
f''''(0) = e^0 = 1
f⁽⁵⁾(0) = e^0 = 1
Using these values, we can compute the Taylor polynomial P₅(x):
P₅(x) = f(0) + f'(0)(x - 0) + f''(0)(x - 0)²/2! + f'''(0)(x - 0)³/3! + f''''(0)(x - 0)⁴/4! + f⁽⁵⁾(0)(x - 0)⁵/5!
P₅(x) = 1 + 1x + 1x²/2! + 1x³/3! + 1x⁴/4! + 1x⁵/5!
Now, let's evaluate P₅(1):
P₅(1) = 1 + 1(1) + 1(1)²/2! + 1(1)³/3! + 1(1)⁴/4! + 1(1)⁵/5!
P₅(1) = 1 + 1 + 1/2 + 1/6 + 1/24 + 1/120
P₅(1) = 227/120
Therefore, the value that verifies 5P₅(1) - (1) - 500 is:
5P₅(1) - (1) - 500 = 5 * (227/120) - 1 - 500
= 1135/120 - 1 - 500
= 1135/120 - 120/120 - 60000/120
= (1135 - 120 - 60000)/120
= -59485/120
= -124.04
So, the value that verifies 5P₅(1) - (1) - 500 is approximately -124.04.
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A box of macaroni & cheese says that it makes 25% more than a regular box. If a regular box makes 3 cups of macaroni & cheese, how many cups will this box make?
Thanks :)
Answer:
3.75
Step-by-step explanation:
25% = 0.25
3(0.25) = 0.75
3 + 0.75 = 3.75
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A mechanic charges $45 to inspect your heater, plus $80 per hour to work on it. You owe the mechanic a total of $385. Write and solve an equation to find the amount of time (h) (in hours) the mechanic works on your heater.
What is the equation and and the answer?
Answer:
385=80x+45
x=4.25 hours
Ariana orders 4 large pizzas and 1 order of breadsticks The total for her order is $34.46. Emily orders 2 large pizzas and 1 order of breadsticks. $18.48 is the total for her order. Determine the order for 1 large pizza and 1 order of breadsticks?
Are there outliers in the set of data below? Hint: Use your formulas from the lesson
52, 58, 62, 66, 67, 68, 68, 70, 70, 72, 73, 74, 76, 84, 90
Question 1 options:
52 and 90
68 and 70
There are no outliers
pls help
[LOOK AT THE PICTURE URGENT]
Answer:B
Step-by-step explanation:if it's a negative 3/4x then in be there is a -4 and there is a -7 so we can do -7 -4 but 4 is a negative so it turns into a positive so it's _
-7+4 and it become a smaller negative so -7+4 = -3. So it has to be B. Hope this gets brainliest