A biology class has a total of 47 students. The number of females is 15 less than the number of males How many males and how many females are in the class

31 m, 16 f

Step-by-step explanation:

m + f = 47

m = f + 15

Substitute

(f + 15) + f = 47

2f + 15 = 47

2f = 32

f = 16

m + f = 47

m + 16 = 47

m = 31

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72