Which expression is equivalent to 4a + 4/2a times a squared/a + 1 ?
2 (a + 1) squared Over a cubed
6a
2a
6 a squared Over a + 1

What is the value of x in the diagram below?

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

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers