You have to multiply whatever number your working with by 2
Answer:
x=−8 and y=−4
Step-by-step explanation:
8x−17y=4;−8x+15y=4
add eqn1 and 2
to eliminate x
you will get y=-4
put it zin eqn 1
x=-8
Answer: the cost of the steel per square 0.03m
Step-by-step explanation:
The formula for determining the total surface area of a cylinder is expressed as
Total surface area = 2πr² + 2πrh
Where
r represents the radius of the cylinder.
h represents the height of the cylinder.
π is a constant whose value is 3.14
From the information given,
Total surface area = 56π
Radius = Diameter/2
radius = 12/2 = 6
height = 8 feet
Therefore,
Area = 2 × 3.14 × 6² + 2 × 3.14 × 6 × 8
Area = 226.08 + 301.44
Total surface area = 527.52
Suppose the total cost of the steel will be $17,408.16. the steel cost per square meter is
527.52/17408.16 = 0.03
Answer:
The point is (2,-2)
Explanation: