Answer:
Luis:

Marina:

Answer: Marina got the better percent score than Luis
Marina:
.457/100 .797/100 .815/100 .242/100
Answer: 60 Km
Step-by-step explanation: Because if you divied 95*285= 3 so you know that it will take him 3 times the amount has given to us so we just have to do 3* 20 km which is 60
-Alissa
Hope i helped sorry if this is wrong it makes sense to me but then again i am not the best at math sooo..... sorry if this is wrong but i am pretty sure it is right :/
Answer:
frac{21x^6y^5}{14x^2y^9}
Factor the number =\frac{7\cdot \:3x^6y^5}{14x^2y^9}
Factor the number 14=7. 2 =\frac{7\cdot \:3x^6y^5}{7\cdot \:2x^2y^9}
Cancel\:the\:common\:factor:}\:7 =\frac{3x^6y^5}{2x^2y^9}
Step-by-step explanation: