Answer:
Step-by-step explanation:
-9x + 6y = -30
-7x + 12y = -16
18x - 12y = 60
11x = 44
x = 4
-36 + 6y = -30
6y = 6
y = 1
(4,1)
-9x + 6y = -30.............(1)
-7x + 12y = -16 ............(2)
(2) - 2(1)
-7x+12y - 2(-9x+6y) = -16 - 2(-30)
simplify
or
x = 4 .......................(3a)
substitute (3) in (1)
-9(4) + 6y = -30
6y = -30 + 36
y = 1 ......................(3b)
Using results from (3a) and (3b), we have
solution : (4,1)
Area of the base = 24 cm²
Height of the prism = 5 cm
Volume of the prism = 120 cm³
50 miles(D)
20 x 2.5
