1/f=1/a+1/b solve for f

An investment company pays 9 % compounded semiannually. You want to have $ 19,000 in 10 years

A florist is making centerpieces. He uses 2 dozen roses for every 5 centerpieces. How many dozens of roses will he need to make 20 centerpieces?

A ladder that is 22 feet long is propped up against a 15-foot-tall building. Use the drop downs to answer the following questions.

What number would x be for 2x+1/3 and 2x be the same equation

Manuel's age is 8 years less than twice Niko's age. If we let y represent Niko's age, write an algebraic expression for Manuel's age.

Ian has a list of 3 visit on a road trip with some friends. He needs to finalize the plans for the trip. How many different orders can he plan to visit the cities

From a group of 8 people, including George and Nina, 3 people are to be selected at random to work on a certain project. What is the probability that the 3 people selected will include George but not Nina? A) 5/56 B) 9/56 C) 15/56 D) 21/56 E) 25/56

5 (2x+6) - 17+0+0+0+0+0+0+0

What type of number is 3 - 771? Complex number Question in Khan Academy

2T+2T-8+3+5k there is a 2 as an exponent on the 5k but I can't wright it so FYI