Tyrel evaluated the expression 212−34. Which is one way he can check his work? The answer minus 212 should equal 34. The answer plus 212 should equal 34. The answer minus 34 should equal 212. The answer plus 34 should equal 212.

What is the value of x in the following equation? -3x-2=2x+8

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4

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.