Answer:
125
Step-by-step explanation:
put 9 where the n's are and sovle
(9-4)(3*9-2)
5*25
125
.394= 197/500
you can't make it a mixed number since there isn't a whole number as with an improper fraction.
Answer:
Step-by-step explanation:
tan P = 
= 
tan Q = 
Answer:
It is not valid since there is more than one variable being changed at one.
Step-by-step explanation:
Jackson changed the brand of soil, but he also changes the amount of water, and the amount of sunlight the plants are receiving, so his conclusion that the soil was more effective is not valid.
