The ratio of the number of female passengers to the number of male passengers on a bus was 4 : 5. At the next bus stop, 5 passengers alighted, and 8 passengers boarded the bus. There is a total of 39 passengers now. How many female passengers were there in the bus at first? ​

3× __ -2=15 7 2× __+1=7 5 7× =22 15 5× __+10=2 8 × __+4=20 6 × =10 3 × __+2=8 6 × __+8=8 9 × __+7=20 6

Martin likes to make flower bouquets that have 3 daffodils and 4 tulips per vase. a daffodil has a mass of d grams, a tulip has a mass of t grams, and the vase has a mass of u grams. the expression 5(3d + 4t + v) describes the mass of 5 bouquets. match each amount in the situation with the expression that represents it. situation expression number of bouquets mass of one bouquet mass of the tulips in one bouquet 4t mass of the daffodils in one bouquet 3d + 4t + v

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0