exam
Maths Puzzle
Numerical Ability
Solve by substitution or elimination method:
1. 3x - 2y = 8
-12x + 88 = 32
2. 7x - 5y = 14
-4x + y = 27
3. -4x + 3y = 5
12x - 9y = -15
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exam Other Question
Solve the system by substitution.
x+y=12
y=2x
The cost of stainless steel tubing varies jointly as the length and the diameter of the tubing. If a 5 foot length with diameter 2 inches cost $48.00, how much will a 13 foot length with diameter 6 inches cost?
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