Select the correct equation that represents an am signal. a. s(t) = ac[1 + μam cos (2πfmt)] cos (2πfct) b. s(t) = ac cos [2πfct + βfm *sin(2πfmt)] c. s(t) = ac cos [2πfct + μp cos (2πfmt)] d. c(t) = ac cos (2πfct ± φ)

Which expression converts 45 degree to radians

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

Lines b and c are parallel. what is the measure of 2? m2 = 31° m2 = 50° m2 = 120° m2 = 130°