77.) x= {-5, 6}
78.) x= {-4, 9}
79.) x= {5/3, 2}
80.) x= {1/9, 3}
81.) x= {-6, 18}
82.) x= {-3√3 +4, 3√3 +4}
83.) x= {-7, -3}
84.) x= {-√85 +9 /2, √85 -9 /2}
Answer:
9
Step-by-step explanation:
Car:
19 + 28 +17 +39 + 22 + 44 + 56 = 225
225/7 = 32.14
bus:
32 + 26 +25 + 40 + 39 + 49 + 22 = 233
233/7 = 33.29
the bus has the higher average
Answer:
3/20
Step-by-step explanation:
its 3/20 because its really the only possible answer that has 20 has its denominator
