HELPPP FAST PLS Select the correct answer. Which expression is equivalent to cos(4x) + cos(2x)?
O A. 2cos(3x)cos e
OB. -2sin(3x)sint
OC. 2sin(3x)sins
OD. -2cos(3x)cost

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?