Evaluate sin(x+y) exactly if cos x=3÷4 and cos y= -3÷5

What is the point-slope form of theequation for the line with a slope of-2 that passes through (1, 4)? a y + 1 = -2(x + 4)b y-1=-2(x-4)c y + 4 = -2(x + 1)d y - 4 = -2(x - 1)

What is the missing constant term in the perfect square that starts with x^2 -20x

Someone me! if you’re smart you can solve this!