For questions 3 and 4, write an equation and solve. y decreased by 23 is 52.9 a. 52.9 – 23 = y; y = 29.9 b. y – 52.9 = 23; y = 75.9 c. y – 23 = 52.9; y = 75.9 d. 52.9 – y = 23; y = 29.9

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.

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample

Which of the following is an example of a rational number? a. π b. √ 9 c. √ 8 d. 3.8362319