If the weight of a package is multiplied by 7/10 the result is 21 pounds. Find the weight of the package.

Bring the fraction a/a-4 to a denominator of 16-a^2

Will mark brainlist what is the slope of the line passing through the points (-2, -8) and (-3,-9)? -7/5-5/71-1

(c) a vine called the mile-a-minute weed is known for growing at a very fast rate. it can grow up to 0.5 ft per day. how fast in inches per hour can the mile-a-minute weed grow up to? show your work using the correct conversion factors.