19. let f(x, y) = and let c be the upper half of the unit circle. which of the following is not equivalent to sf. dr? xydx + x²ydy b) sint cost dt dr 20. which theorem is useful in physical problems which require the computation of the net total flux of a vector field across a closed surface? a) the fundamental theorem for line integrals b) green's theorem c) the divergence theorem d) stokes' theorem

Abag of jelly beans contain 13 pink, green, 20 yellow, 10 black, 7 red, and 11 orange jelly beans. approximately what percent of the jelly beans are pink and yellow?

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality