Answer:
16 year olds had the higher ratio of black belts to brown belts.
Step-by-step explanation:
15 year olds: 8/28 students had black belts
8/28 = 28.6% had black belts
16 year olds: 10/27 students had bald belts
10/27 = 37.0% had black belts
Answer: 13/12
Step-by-step explanation:
Common denominator:12
9/12 plus 4/12 equals 13/12 equals 1 1/12
C. YFC hope this helps!!!
Solution: Estimated time for the work is 40 hour work week.
Estimated payment to 3 laborers working 40 hours at cost $14 per hour is:
$1680
Estimated payment to 6 masons working 40 hours at cost $24 per hour is:
$5760
Estimated cost of material = $3143
Contractor wishes to make a profit of $500
Therefore, the mathematical expression that will give the estimated cost of the job is:

The estimated total cost is:
Cost =$11083
Answer:
The simplified expression is:

Step-by-step explanation:
Given the expression

solving the expression

∵
∵ 
∵ 
Therefore, the simplified expression is:
