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Is The elimination method is useful when you can eliminate one of the variable terms from an equation by adding or subtracting another equation?
Yes, for solving simultaneous equations.
Why is integers useful?
Integers are whole numbers without decimals or fractions which are useful because calculations are easier to work out.
What is a Real life situation using LCM?
Adding or subtracting fractions requires the use of a common multiple. It is rare that the LEAST common multiple is required - it is useful to keep the numbers small and manageable.
What statement describes why scientific notation is useful?
It makes calculations with very large and small numbers easier by allowing the 10-factors to be multiplied or divided by adding or subtracting their indices. (The principle of logarithms.)
What is a quick common denominator?
When you're adding or subtracting fractions with different denominators, if you multiply the denominators that's your Quick Common Denominator. I'ts useful for denominators that don't have a low Least Common Factor.
