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The measure of an angle is 117°. what is the measure of a supplementary angle?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups