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:
Step-by-step explanation:
In both the point, y-coordinates are same. So, the line is parallel to x-axis
Slope of the line parallel to x-axis =0
m = 0
Equation : y =6.7
Answer:
6.3°
Step-by-step explanation:

3/4+7/10 common denominator is 20
3/4+7/10
=5•3/20 +2•7/20
=15/20 +14/20
=29/20
=1 9/20