Use the squared identities to simplify 2sin^2xsin^2x a. 3-4cos(2x)-cos(4x)/4 b. 3+4cos(2x)+cos(4x)/4 c. 3-4cos(2x)+cos(4x)/4 d. 3+4cos(2x)-cos(4x)/4

Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?

Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?