Answer:
11
Step-by-step explanation:
180 - 112 = 68
4x + 16 +5x - 3 + 68 = 180
simplify.
9x + 81 = 180. subtract 81 from 180
9x = 99. divide 99 by 9
x = 11.
Answer:
2d = 58 (If you are just finding d then d = 29)
Step-by-step explanation:
69 + 53 = 122
180 - 122 = 58
4/5 is 0.8 and 2/3 is 0.66 so 4/5 is bigger
Answer:
$330
Step-by-step explanation:
What is mean/average?
It is the "sum of all the numbers" divided by the "number of numbers".
An average of 200 for 6 numbers means:

THus, if we were to add the 6 numbers, we would get "1200". Let the 6th number be x, so we can write:
120 + 110 + 200 + 300 + 140 + x = 1200
870 + x = 1200
x = 1200 - 870
x = 330
To make the average $200, Pedro needs to make $330 on 6th day.