exam
Maths Puzzle
Numerical Ability
graph the relation. then tell whether the relation is a function
x=-4,-2,0,2,4
y=-1,0,1,2,3
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exam Other Question
directions: write a rational number in simplest form for each decimal expansion. my decimal is 0.15 with a line over 15 to make it repeating. my fraction is 25/165. am i correct?
A chemist has 300 grams of 20% hydrochloric acid solution. He wishes to drain some off and replace it with an 80% solution so as to obtain a 25% solution. How many grams must be drain and replace it with 80% solution.