Answer:
1/11 if you mean the proportion of the cost of the topping to the cost of the whole pizza
Step-by-step explanation:
Since Boris use m minutes
Since he pays a monthly fee of 22 dollars (fixed amount)
Since the cost of each minute
Answer:
0
Step-by-step explanation:
If the answer is between 0 to 0.49, the best estimate is 0.
If the answer is between 0.5-1.49, the best estimate is 1.
If the answer is 1.5 or greater, the best estimate is 2.
Without giving the fractions 1/10 and 1/12 a common denominator, we know the answer is between 2/12 and 2/10.
2/12 is less than 2/10. 2/10 is 0.2, which is less than 0.5.
Since the final answer is less than 0.5, the best estimate is 0.
Remark
The population that is middle class is (4/5) * 2000 * 4/5 = 8000/5 = 1600
The others are 2000 - 1600 = 400 which should be 1/5 of the population.
