The first choice,
... a. s(t) = ac[1 + μam cos (2πfmt)] cos (2πfct)
has the carrier frequency cos(2πfct) amplitude modulated by the message signal.
The other expressions represent frequency and phase modulation of various kinds.
Answer: 1. is 50 2. is 111 3. is 26 4. is 45 and 5. is 51
Step-by-step explanation: The formula for Pythagorean theorem is A^2 plus B^2 = c^2
Sry that took so long did it wrong at first
Answer:
-5.25, -3.5, -1.75, 0, 1.75
Step-by-step explanation:
The recursive relation tells you this is an arithmetic sequence with a common difference of 1.75. Each term is 1.75 more than the one before.
To find the 2nd term, add 1.75 to the first term: -5.25 + 1.75 = -3.5
To find the 3rd term, add 1.75 to the second term: -3.5 + 1.75 = -1.75
To find the 4th term, add 1.75 to the third term: -1.75 + 1.75 = 0
and so on ...
Answer:
4.9 x 10∧12
Step-by-step explanation:
(1) x+y+z=1300
(2) x+y=780 => x = 780 - y
(3) y+z=850 => z = 850 - y
Replace x and z with y in function (1)
780 - y + y + 850 - y = 1300
1630 - y = 1300
y = 330
Therefore, x = 780 - y = 780 - 330 = 450
z = 850 - y = 850 - 330 = 520
Dave can do 450 catalog orders per day
Frank can do 330 catalog orders per day
Kathy can do 520 catalog orders per day
