Answer:
60%
Step-by-step explanation:
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.
138 short sleve shirts
step 1) add up the ratio of short to long sleve shirts: 3 + 7 = 10
step 2) divide the total # of shirts by 10: 460 / 10 = 46
step 3) because you are finding how many short sleeve shirts are sold, you multiply 46 x 3 = 138 short sleave shirts
X = 1/cos(30)
X = 1.154700538
X = 1.2 (nearest tenth)
Answer:
b
Step-by-step explanation:
you add 80 and 16 together and subtract it from 180
so you do 180-96
and you get 84
