Draw me a dot diagram to show me why 9 is a square number?

Sara can take no more than 22 pounds of luggage on a trip.her suitcase weighs 112 ounces.how many more pounds can she pack without going over the limit?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Type the correct answer in each box. use numerals instead of words. if necessary, use / fir the fraction bar(s). the graph represents the piecewise function: h