The first term of an arithmetic sequence is 2 and the fourth term is 11. find the sum of the first 50 terms.

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

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

Which of these tools or constructions is used to inscribe a hexagon inside a circle?