Megan is placing fifteen 1-foot by 1-foot stepping stones in her garden. the garden is 10 feet wide and 15 feet long. what is the area of her garden that is not covered by stepping stones?
a. 85 ft2
b. 135 ft2
c. 150 ft2
d. 165 ft2

Need ! give step by step solutions on how to solve number one \frac{9-2\sqrt{3} }{12+\sqrt{3} } number two x+4=\sqrt{13x-20} number three (domain and range) f(x)=2\sqrt[3]{x} +1

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?