Identifique se cada um dos elementos: -4; 1/3; 3; 0,25 pertence ou não a cada um desses conjuntos

A = { x | x é um número inteiro}

B = { x | x < 1}

C = { x | 15x - 5 = o}

D = {x | -2 x 1/4}

12 is 33 1/3% of 36 what is the whole

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.