Using c we can compute the three complex cubic roots of 2-2i. The roots are (-1 + i), (1 - i), and (-2). The explanation below provides the step-by-step process of finding these roots.
De Moivre's Formula states that for any complex number z = r(cos θ + i sin θ), the nth root of z can be calculated as z^(1/n) = r^(1/n)(cos(θ/n + 2πk/n) + i sin(θ/n + 2πk/n)), where k is an integer.
In this case, we have z = 2-2i, which can be represented in polar form as r = √(2^2 + (-2)^2) = 2√2 and θ = tan^(-1)(-2/2) = -π/4.
To find the cubic roots, we need to compute z^(1/3) = (2√2)^(1/3)[cos((-π/4)/3 + 2πk/3) + i sin((-π/4)/3 + 2πk/3)].
For k = 0:
z^(1/3) = (2√2)^(1/3)[cos((-π/4)/3) + i sin((-π/4)/3)] = (∛2)[cos(-π/12) + i sin(-π/12)] = (-1 + i).
For k = 1:
z^(1/3) = (2√2)^(1/3)[cos((-π/4)/3 + 2π/3) + i sin((-π/4)/3 + 2π/3)] = (∛2)[cos(7π/12) + i sin(7π/12)] = (1 - i).
For k = 2:
z^(1/3) = (2√2)^(1/3)[cos((-π/4)/3 + 4π/3) + i sin((-π/4)/3 + 4π/3)] = (∛2)[cos(-5π/12) + i sin(-5π/12)] = (-2).
Therefore, the three complex cubic roots of 2-2i are (-1 + i), (1 - i), and (-2)
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do perpendicular lines intersect at a 60 degree angle?
Answer:
Perpendicular angles create a 90 degree angle
Step-by-step explanation:
The lengths of new pencils are normally distributed with mean 11 cm and standard deviation 0.10 cm. Find the probability that a new pencil picked at random has a length that is: a) Less than 11.15 cm [3 marks] b) Greater than 10.85 cm Between 10.9 cm and 11.1 cm II. The mean number of oil tankers at a port city is eight per day. Find the probability that the number of oil tankers on any given day is: a) Exactly 8 b) At most 3 c) More than 3
Given data: The lengths of new pencils are normally distributed with mean 11 cm and standard deviation 0.10 cm
.a) Find the probability that a new pencil picked at random has a length that is less than 11.15 cm: Formula used: `Z = (X - μ) / σ`Where,Z = Standard score X = Random Variableμ = Meanσ = Standard Deviation Calculating the value of Z, `Z = (X - μ) / σ = (11.15 - 11) / 0.10 = 1.5`
Now, look up the probability corresponding to the value 1.5 from the Z-Table. P(Z < 1.5) = 0.9332 Hence, the probability that a new pencil picked at random has a length that is less than 11.15 cm is `0.9332` approximately.
b) Find the probability that a new pencil picked at random has a length that is greater than 10.85 cm: Calculating the value of Z, `Z = (X - μ) / σ = (10.85 - 11) / 0.10 = -1.5`Now, look up the probability corresponding to the value -1.5 from the Z-Table. P(Z > -1.5) = P(Z < 1.5) = 0.9332Hence, the probability that a new pencil picked at random has a length that is greater than 10.85 cm is `0.9332` approximately.
c) Find the probability that a new pencil picked at random has a length between 10.9 cm and 11.1 cm:
Calculating the value of Z, Z1 = (X1 - μ) / σ = (10.9 - 11) / 0.10 = -1 and Z2 = (X2 - μ) / σ = (11.1 - 11) / 0.10 = 1Hence, the probability that a new pencil picked at random has a length between 10.9 cm and 11.1 cm is P( -1 < Z < 1 ) = P(Z < 1) - P(Z < -1) = 0.8413 - 0.1587 = 0.6826 approximately. II. The mean number of oil tankers at a port city is eight per day.
a) Find the probability that the number of oil tankers on any given day is exactly 8:P(X = 8)Formula used: `P(X = x) = (e^(-μ) * μ^x) / x!`
Where, X = Random Variableμ = Mean x = Value of Random Variable P(X = 8) = (e^(-8) * 8^8) / 8! = 0.106Hence, the probability that the number of oil tankers on any given day is exactly 8 is `0.106` approximately.
b) Find the probability that the number of oil tankers on any given day is at most 3:
Formula used: `P(X ≤ x) = Σ P(X = i) i=0 to where, X = Random Variable(X ≤ 3) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = (e^(-8) * 8^0) / 0! + (e^(-8) * 8^1) / 1! + (e^(-8) * 8^2) / 2! + (e^(-8) * 8^3) / 3! = 0.0003Hence, the probability that the number of oil tankers on any given day is at most 3 is `0.0003` approximately.c) Find the probability that the number of oil tankers on any given day is more than 3:Formula used: `P(X > x) = 1 - P(X ≤ x)`Where,X = Random VariableP(X > 3) = 1 - P(X ≤ 3) = 1 - ( P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) ) = 1 - (e^(-8) * 8^0) / 0! + (e^(-8) * 8^1) / 1! + (e^(-8) * 8^2) / 2! + (e^(-8) * 8^3) / 3! = 0.9997Hence, the probability that the number of oil tankers on any given day is more than 3 is `0.9997` approximately.
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Helppppp me pls asp plssss
HELPPPPPPPPPP!!!!!!!!!!!!
Find the volume of the following. Round to nearest hundredths place:
Use 3.14 for II
+
7 mi
2 mi
Answer:
volume of cone=1/3×pi×r²×h
volume of cone =1/3×22/7×(2mi)²×7mi
volume of cone =29.32mi³
I need some help with this, just like Rocky, ASAP!
Answer:
12 possible roots
Step-by-step explanation:
we can use the rational zeros theorem which says that in order to find the possible roots for a polynomial we need to divide the factors of the constant by the factors of the coefficient of the leading term
which in this case is:
±(1, 2, 3, 4, 6, 12)/(1)
±1, 2, 3, 4, 6, 12
so we have 12 possible roots
For each set of points below, determine the distance between them using the distance formula. If necessary express your answer in simplest radical form OR rounded to the nearest tenth.
where are the points below? i cant do anything if there isnt numbers or anything to work with
whats 24/3 but not 8?
Answer: well, it =8 and it doesn’t have different answer so that all I have to tell you.
Step-by-step explanation: Hope this help I guess :^ sorry if you don’t want this kind of answer.
I need help please, anyone will to help?
Answer:you just add the numbers to get answer
Step-by-step explanation:
brainliest if right
A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation. Using this equation, find the time that the rocket will hit the ground, to the nearest 100th of second.
y=-16x^+272x+110
Answer:
17.40 seconds
Step-by-step explanation:
You would you the quadratic formula to get 17.40 seconds
Which equation matches the table?
X 4 5 6 7 8
Y 8 10 12 14 16
y = x - 4
y = x ÷ 2
y = x + 4
y = 2 x
Answer:
y=2x
Step-by-step explanation
PLEASE HELP WITH MY HOMEWORK SCREEN SHOT ATTACTCHED
Answer:
first, second and fourth are all correct
Step-by-step explanation:
Let f:R" + R" be a linear transformation. Prove that f is injective if and only if the only vector v ERM for which f(v) = 0 is v = 0.
If f(u1) = f(u2), then u1 = u2, demonstrating that f is injective.
To prove that a linear transformation f: R^n -> R^m is injective if and only if the only vector v in R^n for which f(v) = 0 is v = 0, we need to establish both directions of the statement.
Direction 1: f is injective implies the only vector v such that f(v) = 0 is v = 0.
Assume that f is injective. We want to show that if f(v) = 0 for some vector v in R^n, then v must be the zero vector, v = 0.
Suppose there exists a non-zero vector v in R^n such that f(v) = 0. Since f is a linear transformation, it satisfies the property that f(0) = 0, where 0 represents the zero vector in R^n.
Now, consider the vector u = v - 0 = v. Since f is linear, it must satisfy the property that f(u) = f(v - 0) = f(v) - f(0) = 0 - 0 = 0.
Since f(u) = 0, and f is injective, it implies that u = 0. However, we initially assumed that v is a non-zero vector. Therefore, we have reached a contradiction.
Hence, if f(v) = 0 for some vector v in R^n, then v must be the zero vector, v = 0.
Direction 2: The only vector v such that f(v) = 0 is v = 0 implies that f is injective.
Now, assume that the only vector v in R^n such that f(v) = 0 is v = 0. We want to show that f is injective.
Let u1 and u2 be two arbitrary vectors in R^n such that f(u1) = f(u2). We need to prove that u1 = u2.
Consider the vector u = u1 - u2. Since f is linear, we have:
f(u) = f(u1 - u2) = f(u1) - f(u2) = 0.
Since f(u) = 0, and the only vector v such that f(v) = 0 is v = 0, it follows that u = 0. This implies that u1 - u2 = 0, which means u1 = u2.
Therefore, if f(u1) = f(u2), then u1 = u2, demonstrating that f is injective.
By proving both directions, we have established that f is injective if and only if the only vector v in R^n for which f(v) = 0 is v = 0.
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Use the distributive property to simplify the following expression: 3 (2 + 5z.)
Answer:
6+15z
Step-by-step explanation:
We multiply 3 to 2+5z. So, (3x2)+(3x5z)
Find the volume of the cylinder height 10 in base radius 3 in
Answer: 282.60in³
Step-by-step explanation:
When calculating the volume of a cylinder, the formula to use is:
= πr²h
where,
π = 3.14
r = radius = 3 in
h = height = 10 in
Volume = πr²h
= 3.14 × 3² × 10
= 282.60
Therefore, the volume of the cylinder is 282.60in³
Solve the exponential equation: 529 = 20 O = log 20 2 log 5 O = log 20 5 log 2 Oz C = log 4 2 O None of the above.
The exponential equation [tex]5^{(2x)[/tex] = 20 has no solution among the given options (a, b, c). Option D is the correct answer.
To solve the exponential equation [tex]5^{(2x)[/tex] = 20, we can take the logarithm of both sides of the equation. The logarithm with base 5 seems appropriate since the base of the exponential term is also 5. So, we have:
[tex]log_5(5^{(2x))[/tex] = [tex]log_5(20)[/tex]
Using the logarithm property [tex]log_a(a^b)[/tex] = b, we can simplify the left side of the equation:
2x = [tex]log_5(20)[/tex]
Next, we need to isolate x. Dividing both sides of the equation by 2 gives us:
x = (1/2) × [tex]log_5(20)[/tex]
Now, we can focus on simplifying the right side of the equation. Using the change of base formula for logarithms, we can express [tex]log_5(20)[/tex] in terms of common logarithms (log base 10) or natural logarithms (log base e). Let's use the common logarithm:
x = (1/2) × [tex]log_5(20)[/tex]
x = (1/2) × (log(20) / log(5))
Simplifying further:
x = (1/2) × (log(20) / log(5))
We can rewrite log(20) and log(5) using their prime factorizations:
x = (1/2) × (log(2² × 5) / log(5))
x = (1/2) × (2 × log(2) + log(5)) / log(5))
Now, we can distribute the (1/2) factor and simplify:
x = (log(2) + (1/2) × log(5)) / log(5)
x = log(2)/log(5) + (1/2) × log(5)/log(5)
x = log(2)/log(5) + (1/2)
Therefore, the correct answer is d. None of these.
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The question is -
Solve the exponential equation:
5^{2x} = 20
a. x = log20/2 log 5
b. x = log20/5 log 2
c. x = log 4/ 2
d. None of these
Min read 1/8 of his book before lunch and 1/4 of his book after lunch. He says he has read 2/12 of his book.
Which statement is most accurate?
Answer:
neither
Step-by-step explanation:
he has read 3/6 of his book
what is the area of the circle to the nearest square foot?
Answer:
G. 113
Step-by-step explanation:
We know that the diameter = 12, so the radius = 6.
area of circle = πr²
= π (6²)
= 36π
= 113.0973355 . . .
≈ 113 ft²
Find the value of x. Round to the nearest tenth
Answer:
36.869 or 36.87
Step-by-step explanation:
first, you find which trig function you are using. in this case, tangent.
then, you put calculate the arctan(3/4) which is 36.96989765
The measure of angle x = 36.9°
What is right triangle?"It is a triangle in which one of the angle measures 90° "
What is hypotenuse?"It is the longest side of the right triangle."
What is Pythagoras theorem?"In a right triangle [tex]a^{2}+ b^{2}= c^{2}[/tex] where c is the hypotenuse and a, b are other two sides of the right triangle."
What is sine angle?"In a right triangle, sine of angle [tex]\theta[/tex] is the ratio of the opposite side of angle [tex]\theta[/tex] to the hypotenuse."
For given question
First we find the hypotenuse of the right triangle.
Let 'h' be the hypotenuse of the right triangle.
Using Pythagoras theorem,
[tex]h^{2} =3^{2} +4^{2} \\\\h^{2} =9+16\\\\h^{2} =25\\\\h=5[/tex]
We find the sine of angle 'x'
[tex]\Rightarrow sin(x)=\frac{opposite~side~of~x}{hypotenuses} \\\\\Rightarrow sin(x)=\frac{3}{5}\\\\ \Rightarrow sin(x)=0.6\\\\\Rightarrow x=sin^{-1}(0.6)\\\\\Rightarrow x=36.9^{\circ}[/tex]
Therefore, x = 36.9°
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which set of side lengths form a right triangle ? 12 cm, 13 cm , 14 cm
9 cm , 15 cm , 18cm
7cm , 24 cm , 25 cm,
2 cm , 2 cm , 4cm
Answer:
12 cm ,13cm 14cm is the correct answer
Myrtle needs to borrow $200 and is hoping to get a paid day loan with an annual percentage rate (ARP) of less than 50%. if a company charges her $30 in fee for the loan, what is the minimum loan term needed that would give Myrtle her desired APR?
A. 90 DAYS
B. 100 DAYS
C. 110 DAYS
D. 120 DAYS
Answer:
110 days :)
hope it help!
Find the slope of the graph.
Answer:
The slope is -1.3
Step-by-step explanation:
Plug it in stat, but Ill try to explain it. y2-y1/x2-x1
(-3,4)(3,-4)
-4-4/3-(-3) = -1.3
You are randomly selecting cards from a deck of cards. What is the probability of pulling a king, replacing it, and then pulling a queen?
Answer:
1/52 since there are usually 52 cards in a deck
Step-by-step explanation:
Please brainliest
Answer:
1/52 since there are usually 52 cards in a deck
Step-by-step explanation:
Differentiate Concavity
Upward and Downward.
If the second derivative is positive, the function is concave upward, and if the second derivative is negative, the function is concave downward.
To determine the concavity of a function, we look at its second derivative. If the second derivative is positive, the function is concave upward. If the second derivative is negative, the function is concave downward.
To understand concavity, we start with the first derivative of a function. If the first derivative is positive over an interval, it means that the function is increasing within that interval. Similarly, if the first derivative is negative, the function is decreasing.
Now, let's consider the second derivative. If the second derivative is positive over an interval, it means that the first derivative is increasing within that interval. This implies that the function is becoming steeper as x increases, indicating concave upward curvature.
On the other hand, if the second derivative is negative over an interval, it means that the first derivative is decreasing within that interval. This indicates that the function is becoming less steep as x increases, indicating concave downward curvature.
In summary, the sign of the second derivative determines the concavity of a function. If the second derivative is positive, the function is concave upward, and if the second derivative is negative, the function is concave downward. This understanding of concavity helps us analyze the shape and behavior of functions in calculus.
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Help me please!!!!!!!!!!!!!!!
Answer:
reflection over y axis
Step-by-step explanation:
Given the figure below, find the values of x and z.
Answer:
Value of :x = 12°z = 101°By using the Vertically Opposite Angles property
79 = 6x + 7 where value we get is x = 12
By using Linear pair property
79 + z = 180 where we get the value of z = 101
nadine+mixes+a+juice+solution+that+is+made+from+3+gallons+of+an+80%+juice+solution+and+1+gallon+of+a+20%+juice+solution.+what+is+the+percent+concentration+of+the+final+solution?+25%+50%+65%+70%
The percent concentration of the final juice solution is 65%. The final solution is composed of 65% pure juice.
To compute the percent concentration of the final juice solution, we can calculate the weighted average of the two individual solutions based on their percentages and volumes.
The 80% juice solution is 3 gallons, which means it contains 0.8 * 3 = 2.4 gallons of pure juice.
The 20% juice solution is 1 gallon, which means it contains 0.2 * 1 = 0.2 gallons of pure juice.
The total volume of the final solution is 3 + 1 = 4 gallons.
The total amount of pure juice in the final solution is 2.4 + 0.2 = 2.6 gallons.
To calculate the percent concentration, we divide the amount of pure juice by the total volume and multiply by 100:
Percent concentration = (Pure juice / Total volume) * 100
Percent concentration = (2.6 / 4) * 100
Percent concentration = 65%
Therefore, the percent concentration of the final juice solution is 65%.
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Find sin(a) in the triangle.
Choose 1 answer:
Answer:
5/13
Step-by-step explanation:
Find the diagram to the question attached
Given the following considering angle A
Hypotenuse = 13 = AB
Opposite = 5 (side facing the angle A) = BC
Adjacent = 12
According to SOH CAH TOA;
Sin theta = opposite/hypotenuse
Sin(a) = BC/AB
Sin(a) = 5/13
Hence the value of sin(a) is 5/13
What is the volume of a hemisphere with a diameter of 7.6 m, rounded to the nearest tenth of a cubic meter?
Answer:114.9m^3
Step-by-step explanation:
fyou plant tomato plants in your garden and divide them into four plots. all of the plants are the same variety, and receive the same amount of water and sunlight. you add a different fertilizer to each plot. one plot receives no fertilizer at all. at the end of the month you count how many tomatoes were produced by each plant. the independent variable is the
The independent variable in this scenario is the type of fertilizer added to each plot.
The independent variable is the factor that the researcher deliberately manipulates or changes in order to observe its effect on the dependent variable, which is the number of tomatoes produced by each plant in this case.
In the experiment, the researcher is interested in investigating how different fertilizers affect the growth and yield of tomato plants. To determine this, four plots are created, with each plot receiving a different type of fertilizer. This allows for a comparison of the effects of the different fertilizers on the dependent variable, which is the number of tomatoes produced.
By controlling other factors such as the tomato variety, amount of water, and sunlight, the researcher ensures that any differences observed in tomato production can be attributed to the independent variable, which is the type of fertilizer.
This setup allows for a systematic investigation of the relationship between the independent variable and the dependent variable in order to draw meaningful conclusions about the impact of fertilizers on tomato plant growth.
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