The coefficient (letter chosen) that is used does not matter as it is only to show that it is an unknown variable, if you have more than one variable you need more than one type of coefficient (use different letters for different ones you dont know).
Answer:
326.6 m^2
to nearest tenth.
Step-by-step explanation:
The radius of the flower bed = 1/2 * 22 = 11m
The radius of the whole area included the sidewalk = 11 + 4 = 15 m
So the area of the sidewalk = area of the whole - area of flower bed
= 3.14 * 15^2 - 3.14* 11^2
= 326.6 m^2.
Answer:
(4,4)
Step-by-step explanation:
The intersection point of 10y-11x=-4 and -2y+3x=4 is (4,4) on a graph.
Answer:
4 hrs
Step-by-step explanation:
Let h be the number of hours spent teaching lessons
Then 8h is the amount earned from swimming lessons
Total amount earned = amount from swimming lessons + $20 registration fee
Total amount earned = $52
Therefore, 52=8h+20
32=8h
h=4 hrs (Answer)
