Use angle relationships to write an equation in order to solve for each variable. Determine the indicated angles. In a complete sentence, describe the relevant angle relationships in the following diagram. Find the measurement of angel DAE.

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

Nine more than four times a number is the same as one less than twice the number. find the number?

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed