Can anyone help me I would really appreciate it.
Answer:
7c + 4 = 8
7c = 8 -4
7c = 4
c=4/7
i asked a question a while ago and nobody has answered it pls help
Answer:
bet but need barinlyist
Step-by-step explanation:
Compute the magnitude and phase spectra of the following signals (i.e. compute the Fourier coefficients and determine the magnitude and phase of each one of them). a. a[n] = 4 sin(in/3) b. x[n] = cos(2n7/3) + sin(2n7/5) c. x[n] = cos(2n7/3) sin(2n/5) (a trig. identity that might be useful: cos(x) sin(y) = 1/2 (sin(x + y) – sin(x – y))
The magnitude spectrum of Fourier coefficients a[n] = 4 sin(nπ/3) is: |C[k]| = 0 so the phase spectrum is undefined. Fourier coefficients of x[n] = cos(2nπ/3) + sin(2nπ/5) for all other values of k, C[k] = 0, so the magnitude and phase spectra are zero. The Fourier coefficient for cos(x) sin(y) = 1/2 (sin(x + y) – sin(x – y)) C[k] is zero when k is not equal to ±2/3 and ±2/5.
To compute the Fourier coefficients of a[n] = 4 sin(nπ/3), we use the formula:
C[k] = (1/N) * Σ[n=0 to N-1] a[n] e^(-j2πkn/N)
where N is the period of the signal (in this case, N = 6 since sin(nπ/3) has a period of 6), and k is the frequency index.
For k = 0, we have:
C[0] = (1/6) * Σ[n=0 to 5] 4 sin(nπ/3) = (4/6) * (sin(0) + sin(π/3) + sin(2π/3) + sin(π) + sin(4π/3) + sin(5π/3))
C[0] = (4/6) * (0 + √3/2 + √3/2 + 0 - √3/2 - √3/2) = 0
For k = ±1, we have:
C[1] = (1/6) * Σ[n=0 to 5] 4 sin(nπ/3) e^(-j2πn/6) = (4/6) * (sin(0) - sin(π/3) - sin(2π/3) + sin(π) + sin(4π/3) - sin(5π/3))
C[1] = (4/6) * (0 - √3/2 + √3/2 + 0 + √3/2 - (-√3/2)) = 0
C[-1] = (1/6) * Σ[n=0 to 5] 4 sin(nπ/3) e^(j2πn/6) = (4/6) * (sin(0) - sin(π/3) - sin(2π/3) + sin(π) + sin(4π/3) - sin(5π/3))
C[-1] = (4/6) * (0 - √3/2 + √3/2 + 0 + √3/2 - (-√3/2)) = 0
For all other values of k, we have C[k] = 0. Therefore, the Fourier series of a[n] is:
a[n] = 0
The magnitude spectrum is:
|C[k]| = 0
The phase spectrum is undefined.
To compute the Fourier coefficients of x[n] = cos(2nπ/3) + sin(2nπ/5), we use the formula:
C[k] = (1/N) * Σ[n=0 to N-1] x[n] e^(-j2πkn/N)
where N is the period of the signal (in this case, N = lcm(3, 5) = 15 since both cos(2nπ/3) and sin(2nπ/5) have periods of 3 and 5, respectively), and k is the frequency index.
For k = 0, we have:
C[0] = (1/15) * Σ[n=0 to 14] (cos(2nπ/3) + sin(2nπ/5)) = (1/15) * (5 + 0 - 5 + 0 + 5 + 0 - 5 + 0 + 5 + 0 - 5 + 0 + 5 + 0 - 5 + 0 + 5) = 5/3
To compute C[k] for k ≠ 0 and k ≠ 5, we can use the trigonometric identity:
cos(x) sin(y) = 1/2 (sin(x + y) – sin(x – y))
Let x = 2kπ/3 and y = 2nπ/5, then:
cos(2kπ/3) sin(2nπ/5) = 1/2 (sin(2kπ/3 + 2nπ/5) – sin(2kπ/3 – 2nπ/5))
= 1/2 (sin(10knπ/15 + 6kπ/15) – sin(10knπ/15 - 2kπ/15))
= 1/2 (sin((2k + 3n)π/3) – sin((2k - n)π/3))
The first term is zero when (2k + 3n) is an odd multiple of 3, and the second term is zero when (2k - n) is an odd multiple of 3. Therefore, C[k] = 0 when k + 3n is odd or k - n is odd.
For k = 3n, we have:
C[3n] = (1/15) * Σ[m=0 to 14] (cos(2mπ/3) sin(2nπ/5))
= (1/30) * Σ[m=0 to 14] (sin((2m + 3n)π/3) – sin((2m - n)π/3))
= (1/30) * (sin(5nπ/3) – sin(nπ/3) + sin(7nπ/3) – sin(5nπ/3) + sin(9nπ/3) – sin(7nπ/3) + sin(11nπ/3) – sin(9nπ/3) + sin(13nπ/3) – sin(11nπ/3) + sin(15nπ/3) – sin(13nπ/3) + sin(17nπ/3) – sin(15nπ/3) + sin(19nπ/3) – sin(17nπ/3))
= (1/30) * (sin(nπ/3) – sin(19nπ/3)) = 0
Therefore, the only non-zero coefficients are C[0] = 5/3 and C[5] = -5/3. The magnitude and phase spectra are:
|C[0]| = 5/3, arg(C[0]) = 0
|C[5]| = 5/3, arg(C[5]) = π
For all other values of k, C[k] = 0, so the magnitude and phase spectra are zero.
To compute the Fourier coefficients of cos(x) sin(y) = 1/2 (sin(x + y) – sin(x – y))
x[n] = 1/2 (sin(2nπ/3 + π/2) - sin(2nπ/3 - π/2)) * 1/2 (sin(2nπ/5) - sin(-2nπ/5))
Using the formula for the Fourier coefficients of a sinusoidal signal:
C[k] = (1/N) Σ[n=0 to N-1] x[n] e^(-j2πnk/N)
we can compute the Fourier coefficients for x[n]:
C[k] = (1/N) Σ[n=0 to N-1] x[n] e^(-j2πnk/N)
= (1/N) [Σ[n=0 to N-1] 1/2 sin(2nπ/3 + π/2) e^(-j2πnk/N) - Σ[n=0 to N-1] 1/2 sin(2nπ/3 - π/2) e^(-j2πnk/N)] [Σ[n=0 to N-1] 1/2 sin(2nπ/5) e^(-j2πnk/N) - Σ[n=0 to N-1] 1/2 sin(-2nπ/5) e^(-j2πnk/N)]
= 1/4 [C1(k-2/3) - C1(k+2/3)] [C1(k-2/5) - C1(k+2/5)]
where C1(k) is the Fourier coefficient of the signal cos(2nπ/3), which is given by:
C1(k) = (1/N) Σ[n=0 to N-1] cos(2nπ/3) e^(-j2πnk/N)
= (1/N) Σ[n=0 to N-1] 1/2 [e^(-j2πnk/3) + e^(j2πnk/3)]
= 1/2 [δ(k-1/3) + δ(k+1/3)]
Therefore, the Fourier coefficient C[k] is zero when k is not equal to ±2/3 and ±2/5.
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y=-2x+4y=−2x+4y, equals, minus, 2, x, plus, 4 Complete the missing value in the solution to the equation. ((left parenthesis ,-2),−2)
After solving the equation for x, the resultant answer is (3, -2).
What are equations?The definition of an equation in algebra is a mathematical statement that shows the equivalence of two mathematical expressions.
For example, the equation 3x + 5 = 14 comprises the two equations 3x + 5 and 14, which are separated by the 'equal' sign.
So, we have the equation:
y = -2x +4
Now, get value of x for y = -2 as follows:
Fill in the equation with the value of y and find x:
-2 = -2x +4 . . . . use -2 for y
-6 = -2x . . . . . . . subtract 4
3 = x . . . . . . . . . .divide by -2
Therefore, after solving the equation for x, the resultant answer is (3, -2).
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Complete question:
y=−2x+4y, equals, minus, 2, x, plus, 4
Complete the missing value in the solution to the equation.
This month my metro water services bill was $36.34 and my Madison Suburban Utilty District bill was $26.03. My total water bill was $
Total water bill for the month is $62.37.
It seems that you may have accidentally left out the total amount of your water bill.
The total amount by simply adding the amounts of the individual bills together:
Total water bill =\($36.34 + $26.03\)
= \($62.37\)
You have not provided enough information to determine your total water bill.
You have only given the amounts of your individual bills from Metro Water Services and Madison Suburban Utility District.
To find your total water bill, you simply need to add the two bills together.
So, the total amount you owe for water this month would be:
Total water bill = \($36.34 + $26.03\)
= \($62.37\)
It appears that you may have forgotten to include the full amount of your water bill by accident.
Simple addition of the separate bill amounts yields the following sum:
Water bill total = \($36.34 + $26.03\)
= \($62.37\)
Your total water bill cannot be calculated because not enough information has been given.
Only the amounts of your individual Metro Water Services and Madison Suburban Utility District bills have been provided.
You just need to combine the two invoices together to get your total water bill.
As a result, this month's total water bill for you would be:
Water bill total = \($36.34 + $26.03\)
= \($62.37\)
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Could you please help me with this geometry problem and explain to me how to do it, thank you.
step 1
Find out the measure of angle 18
we have that
m<18=m<6 ------> by corresponding angles
m<6=37 degrees ----> given
so
m<18=37 degrees
step 2
Find out the measure of angle 19
we have that
m<19+m<18=180 degrees -------> by form a linear pair
so
m<19+37=180
m<19=143 degreesConsider the following graph and write the coordinates of point F in the empty box. D F 3 N 1 -5 4 -3 -2 -1 0 1 2 3 4 5 2 -3 E -5
The x coordinate of point F is 4 and y coordiate of point F is 3.
So coordinate of point F is,
\((4,3)\)Answer (4,3)
show that
[a+x]ⁿ=aⁿ[1+×/a]ⁿ, a≠0
Answer:
\(Proof~that~(a+x)^n=a^n(1+\frac{x}{a})^n\\R.H.S. = a^n(1+\frac{x}{a})^n = [a(1+\frac{x}{a})]^n [a^nb^n=(ab)^n] \\~~~~~~~~~~~= (a+x)^n =L.H.S. ~proved\)
Of 120 students from College of Education DIVERS State 19 read both accoch tacy and sociology to read Accountacy or Sociology but not french 27 read Sociology but not accountary or french, 53 read sociology or french but 19 read French but not AccoLLA not Accountacy tacy or Sociology an French but not sociology and and 8 read Accountay Assume that each Student reads at least one of the courses. How many students read; (1) All three courses. (11) Only one course (11) two courses (N) Accountacy irrespective of sociology or french
(1) 6 students read all three courses.
(II) 37 students read only one course.
(III) 77 students read exactly two courses.
(IV) 73 students read Accountancy irrespective of Sociology or French.
How to solveLet A represent the number of students reading Accountancy, S represent the number of students reading Sociology, and F represent the number of students reading French.
Let X be the number of students reading all three.
From the information given:
A ∩ S = 19
A + S - 27 = 120 - 53 + 19 = 86 (number of students reading Accountancy or Sociology but not French)
S - A - X = 27
S + F - X = 53
F - X = 19
A - X = 86 - 19 = 67
Total = A + S + F - (A ∩ S) - (A ∩ F) - (S ∩ F) + X = 120
Solving, we get X = 6, A = 73, S = 52, F = 25.
(1) 6 students read all three courses.
(II) 37 students read only one course.
(III) 77 students read exactly two courses.
(IV) 73 students read Accountancy irrespective of Sociology or French.
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-12\(-12\ \textless \ \frac{1}{2}\left(4x+16\right)\ \textless \ 18\)
The solution to the given inequality is -10 < x < 5.
How to solve a compound inequality involving the and operation?
To solve a compound inequality involving the and operation, we solve each inequality, then find the intersection of these solutions.
For this problem, the inequality is given by:
-12 < 0.5(4x + 16) < 18.
Multiplying all the terms by 2:
-24 < 4x + 16 < 36
Hence:
4x + 16 > -24
4x > -40
x > -10.
4x + 16 < 36
4x < 20
x < 5
The intersection of these two solutions is:
-10 < x < 5.
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A tank in the shape of a hemisphere has a diameter of 24 feet. If the liquid that fills the tank has a density of 92.5 pounds per cubic foot, what is the total weight of the liquid in the tank, to the nearest full pound?
The total weight of the liquid in the tank is approximately 12,628 pounds.
To calculate the weight of the liquid, we need to determine the volume of the hemisphere and then multiply it by the density of the liquid. The formula for the volume of a hemisphere is V = (2/3)πr³, where r is the radius of the hemisphere.
In this case, the diameter of the tank is given as 24 feet, so the radius is half of that, which is 12 feet. Plugging this value into the formula, we get V = (2/3)π(12)³ ≈ 904.78 cubic feet.
Finally, we multiply the volume by the density of the liquid: 904.78 cubic feet * 92.5 pounds per cubic foot ≈ 12,628 pounds. Therefore, the total weight of the liquid in the tank is approximately 12,628 pounds.
In summary, to calculate the weight of the liquid in the tank, we first determine the volume of the hemisphere using the formula V = (2/3)πr³. Then, we multiply the volume by the density of the liquid.
By substituting the given diameter of 24 feet and using the appropriate conversions, we find that the total weight of the liquid is approximately 12,628 pounds.
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a rectangle park has a perimeter of 80m one side measures 16m what are the lengths of the other three sides
Answer:
16m 24m and 24m
Step-by-step explanation:
Given the fact that it's a rectangle, and 1 side is 16m, we know that 1 of the other sides will be 16m. After that and some simple subtraction, we get the other 2 sides are 24m.
h(x) = 3x-2 then h(-6) =
Step-by-step explanation:
step 1. h(-6) = 3(-6) - 2
step 2. h(-6) = -18 - 2
step 3. h(-6) = -20.
4/5^3=?
Write your answer as a fraction in simplest form.
The simplest fraction form of the given expression 4/5^3 is 4/125.
What is a fraction?A fraction is part of a whole. In arithmetic, numbers are represented as the quotient of the numerator divided by the denominator. In simple fractions, both are integers. A complex fraction has a fraction in the numerator or denominator. A true fraction has the numerator less than the denominator
What is a fraction's simplest form?Simplifying a fraction means finding the equivalent fraction, truncated as much as possible.
According to the information from the question given:
Simplified form of fraction= 4/5^3
=4/(5x5x5)
=4/125
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ASAP 40 points
Attached picture
Answer:
A
Step-by-step explanation:
I would recommend following along with Brian McLogan, a renowned math teacher. He teaches this great. Hope this helps: "How to Determine All of the Zeros of a Polynomial"
Add.
18 5/12 + 8 10/17 + 23 7/12 +28 7/17=?????????????????????????????????????????????????
Answer: 79
Step-by-step explanation:
How many tenths make up 4 wholes?
Answer:
40
Step-by-step explanation:
Hope that helped have a nice day!
Pls help Find the value for n try to use x/y Pls pls pls help il mark brainliest pls i really need help pls pls help
Answer:
coprs said the United of a group that had to take the first time and was not the first person in a while and
Step-by-step explanation:
A car company charges customers an initial charge plus a daily charge to rent cars. The initial charge is $40 and the daily charge is $35. The rental company charged Frank $180. Create an equation that can be used to find the number of days, x, that Frank rented the car.
Answer:
Total Charge = Initial Charge + Daily Charge x Number of Days
Step-by-step explanation:
Let's assume that x is the number of days that Frank rented the car.
The initial charge for the rental is $40, which is a one-time charge, so it does not depend on the number of days.
The daily charge for x days is $35 per day. Therefore, the total charge for x days can be calculated as:
Total Charge = Initial Charge + Daily Charge x Number of Days
Total Charge = $40 + $35x
We know that Frank was charged $180, so we can set the total charge equal to $180 and solve for x:
$40 + $35x = $180
Subtracting $40 from both sides gives:
$35x = $140
Dividing both sides by $35 gives:
x = 4
Therefore, Frank rented the car for 4 days.
At times 6 x 10 To the six power cubic feet of water go over Niagara Falls every minute there are 1440 minutes and one day at this rate how many cubic feet of water would go over Niagara Falls in one day
Answer:
6.718464×10^13 / 67184640000000
Step-by-step explanation:
6×10^6 = 46656000000 × 1440 = 67184640000000
PQRS is a rhombus. ∠ SPQ = 120° and SP = 8.
Find each of the following.
20). ∠ SPO
21). ∠ POS
22). ∠ PSO
23). ∠ PO
24). ∠ SO
25). ∠ The area of PQRS
In the rhombus PQRS, if angle ∠ SPQ = 120° then ∠SPO is 30°
∠POS is 90° and ∠PSO is 60 degrees, ∠PO is 90° and ∠SO is 150°
PQRS is a rhombus.
∠ SPQ = 120° and SP = 8.
We have to find angles,∠SPO = (180° - ∠SPQ) / 2
= (180° - 120°) / 2
= 30°
∠POS = 90°
Now we have to find angle PSO
∠PSO+∠SPO+∠POS =180
30+90+∠PSO=180
120+∠PSO=180
∠PSO=180-120
∠PSO=60 degrees
∠PO = 360° / 4 = 90°
∠SO = 180° - ∠POS = 180° - 30°
= 150°
The area we find by using formula diagonal 1 × diagonal 2/2
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HELP PLEASE I WILL GIVE MAX POINTS HELP
Answer:
90
Step-by-step explanation:
45% = 45/100
45/100 × 200 = 90
The amount in an account, which was opened 180 days ago, is RM205. If the account was offered a simple interest of 5% per annum, find the original principal.
The original principal was RM 200 when rate of interest was 5% p.a. for 180 days amounted to RM205.
What is Simple interest?
Simple interest is a quick and simple formula for figuring out how much interest will be charged on a loan. The daily interest rate, the principle, and the number of days between payments are multiplied to calculate simple interest.
Although some mortgages employ this calculation approach, this kind of interest typically relates to auto loans or short-term loans.
Given, time period = 180 days.
Time ( T) in years = 180/365 year
Amount (A) = RM 205
Rate of interest (R) = 5% p.a. = 0.05
The formula to calculate amount (A) with respect to principal (P) is:
A = P(1+RT)
⇒ 205 = P(1 + 0.05*180/365)
⇒ 205 = P(1.025)
⇒ P = 205/1.025
⇒ P = 200
Hence, principal comes out as RM200.
The original principal was RM 200 when rate of interest was 5% p.a. for 180 days amounted to RM205.
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Using Simple Interest, The original principal was RM 200 when rate of interest was 5% p.a. for 180 days amounted to RM205.
What is Simple interest?Simple interest is a quick and simple formula for figuring out how much interest will be charged on a loan. The daily interest rate, the principle, and the number of days between payments are multiplied to calculate simple interest.
Although some mortgages employ this calculation approach, this kind of interest typically relates to auto loans or short-term loans.
Given, time period = 180 days.
Time ( T) in years = 180/365 year
Amount (A) = RM 205
Rate of interest (R) = 5% p.a. = 0.05
The formula to calculate amount (A) with respect to principal (P) is:
A = P(1+RT)
⇒ 205 = P(1 + 0.05*180/365)
⇒ 205 = P(1.025)
⇒ P = 205/1.025
⇒ P = 200
Hence, principal comes out as RM200.
The original principal was RM 200 when rate of interest was 5% p.a. for 180 days amounted to RM205.
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3 6 9 12 15 18 21 24 27 30 is odd or even numbers?
Answer: Half of them are even and half of them are odd.
Step-by-step explanation:
The even numbers are 6, 12, 18, 24, and 30. An even number is defined as a number that is divisible by 2, meaning it has no remainder when divided by 2. For example, 6 divided by 2 equals 3 with no remainder, so 6 is even.
The odd numbers are 3, 9, 15, 21, and 27. An odd number is defined as a number that is not divisible by 2, meaning it has a remainder of 1 when divided by 2. For example, 9 divided by 2 equals 4 with a remainder of 1, so 9 is odd.
Therefore, out of the given numbers, half of them are even and half of them are odd.
________________________________________________________
An agricultural company called Phatsima Pty. Ltd. owns an rectangular fuel tank that measures 75 cm by 65 cm by 30 cm.
How many millilitres of fuel are needed to fill their tank?
If the fuel price is R20.35 per liter. How much will it cost to fill half of their tank?
Choose an option below that has both answers correct.
a.
1. 146 250.00 ml and 2. R 1 488.10
b.
1. 150 000.00 ml and 2. R 2 976.19
c.
1. 73 125.00 ml and 2. R 1 488.10
d.
1. 146 250.00 ml and 2. R 2 000.00
Which
graph shows the solution to the
system of linear inequalities?
y > 2/3x + 3
y < - 1/3x + 2
-
Answer:there is no graphs
Step-by-step explanation:
poop
7.) According to the quantity equation, changes in the money supply will lead directly to
changes in the price level if velocity and real GDP are unaffected by the change in the
money supply. Will velocity change over time? What factors might lead to changes in
velocity? Are those changes related to changes in the money supply?
According to the quantity theory of money, changes in the money supply will lead directly to changes in the price level if velocity and real GDP are unaffected by the change in the money supply.Velocity can change over time, and changes in velocity may be caused by various factors.
For example, changes in velocity can be caused by shifts in payment practices, changes in the use of credit, changes in the availability of bank deposits or cash, or shifts in demand patterns.Changes in velocity may be related to changes in the money supply.
For example, if the money supply increases, the demand for money may increase, causing the velocity of money to decrease. Conversely, if the money supply decreases, the demand for money may decrease, causing the velocity of money to increase.
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50points!
True or False, (-1,5) is a solution for these systems of equations.
y = -x + 4
y = 0.2x
Answer:
am not sure but I think is true. I am hopeful
Answer:
FalseStep-by-step explanation:
Substitute to verify:
5 = - (-1) + 45 = 5True for the first equation5 = 0.2(-1)5 = -0.2False for the second equation, so the answer is falseGretta is saving for retirement. She deposits $125 each month at 6% annual interest for 35 years. According to her calculations, at the end of 35 years, she should have $178,088.79 in her account. How much of this did Gretta contribute and how much of this is interest?
Answer:
Gretta's Contribution = $52,500
Interest = $125,588.79
Step-by-step explanation:
Gretta contributes $125 each month, for 35 years. Therefore, to find the amount she contributed, we multiply those pieces together (12 months in each year).
125 x 12 x 35 = $52,500
Therefore, over the 35 years, Gretta contributed $52,500.
If there was $178,088.79 in her account, and she contributed $52,500, then the rest is interest.
$178,088.79 − $52,500 = $125,588.79
There was $125,588.79 in interest earned on Gretta's account.
Ty bought a new computer for $499. This brand depreciates at a rate of 12% of the original price per year. The value y of Ty's computer, x years after he purchased it, is found using an equation in the form y = mx + b. What is the approximate value of m?
Answer:
the approximate value of m is -0.12, indicating that the value of Ty's computer decreases by 0.12 (or 12%) each year.
Step-by-step explanation:
o express this depreciation rate as a slope in the equation y = mx + b, we need to determine how much the value changes (the "rise") for each year (the "run").
Since the value decreases by 12% per year, the slope (m) would be -12%. However, we need to express the slope as a decimal, so we divide -12% by 100 to convert it to a decimal:
m = -12% / 100 = -0.12