Answer:
(1/2, 5)
Step-by-step explanation:
8x + 7y = 39
-2(4x - 14y = -68)
-8x + 28y = 136
add the two equations together
35y = 175
y = 5
8x + 7(5) = 39
8x = 4
x = 1/2
3 1/2
d=10m
r=10/2=5m
The Area is:
(πr^{2}) /2
(π5^2) / 2
=25π/2
=12.5π
$54
First
45 times .05= 2.25
Second
45 plus 2.25
Third
45 times .15= 6.75
Fourth
45+2.25+6.75
