So to set up the equation we have:
<span><span><span>4M</span><span>4+M</span></span>=<span>127</span></span>
<span>28M=12(4+M)</span>
<span>28M=48+12M</span>
<span>28K−12M=48</span>
<span>(28−12)M=48</span>
<span>16K=48</span>
<span>M=<span>4816</span></span>
<span>M=3</span>
So Marna can clean the chimney alone in 3 hours
Answer:
19/37
Step-by-step explanation:
The mathematics faculty at a college consists of 9 professors, 8 associate professors, 10 assistant professors, and 10 instructors. If one faculty member is randomly selected, find the probability of choosing a professor or an instructor
Total number of people in the faculty =
9 professors + 8 associate professors+ 10 assistant professors+ 10 instructors
= 37 people
Hence,
The probability of choosing a professor or an instructor
= P( Professor) + P( Instructor)
= 9/37 + 10/37
= 19/37
You would make 3,600a year. Hope this helped!
Answer:
7/10
Step-by-step explanation:
3/10+2/5=3/10+4/10=7/10
Answer:
-14.54, 2.54
Step-by-step explanation:
Solve by using the quadratic forumla
