exam Maths Puzzle Numerical Ability

Solve the system by graphing, addition and substitution methods.
3x - y = 1
3x - y = 2

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exam Other Question

find the area of a rectangle with length, l = 2x + 3 and width, w = 2x - 3
a. 4x2
b. 4x2 - 12x + 9
c. 4x2 - 9
d. 4x2 + 9 Solve the triangle using Law of sines or cosines.
A=42(angle A)
b=120 (side b)
c=160 (side c)