exam
Maths Puzzle
Numerical Ability
How many quarts of pure antifreeze should Frida add to 10 quarts of a 20% antifreeze solution to make a 50% antifreeze solution?
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exam Other Question
Define the solutions to: Q(w) = w^2 – 10w + 9
@ The thing to recognize is that the equation is of a quadratic form. Hence, reverse FOIL can be easily used.
a. x = ±1, ±3
b.
The electricity costs of a business decreased from $12,000 one year to $10,920 the next. What is the rate of decrease?