Which pair of ratios form a proportion?

3 : 4 and 4 : 5

10 : 12 and 16 : 18

7 : 10 and 10 : 14

5 : 8 and 20 : 32

Given the statements, "a square root of 16 is 4," and "a square root of 9 is -3," complete the following blanks with the correct truth-values. p is and q is , so the statement, "a square root of 16 is 4 or a square root of 9 is -3" is .

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Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?