exam
Maths Puzzle
Numerical Ability
Can you please help me solve the problem...instructions...solve the system by substitution.
3x - 2y = -19
y = 2x + 12
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exam Other Question
Solve this system of inequalities graphically.
3x - y is less than or equal to 6
x is greater than or equal to 1
y is less than or equal to 3
the mass of an object varies jointly within its density and its volume. If 156 grams of iron has a volume of 20 cm^3 and a density of 7.8 gm/cm^3, what is the volume of 312 grams of iron with the same density?
Answer:(blank)cu.cm.