A particular sound wave can be graphed using the function y = -10 sin 4x. Find the amplitude and period of the function. A. Amplitude=10, period= 1/2π
B. Amplitude=2π, period= -10
C. Amplitude=-10, period= 2
D. Amplitude=1/2π, period= 10

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a. p.