In DEF, if d=e, de=x+4, ef=4x-8, df=7x-35, find x and the measure of each side

Aformual for 8 bottles of window cleaner calls for 6 cups of rubbing to customers alcohol 2 1/4 gallons of water and 1 1/2 cups of ammonia alcohol would the forula call if a factory made 1,280 bottles for stores to sell to customers

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Write the expression as a constant , a single trigonometric function, or a power of a trigonometric function. sin x cos x/ tan x