Ray recorded the amount he paid for his phone bill each month for the year in this table. $28$27
$26$25
$32$26
$30$25
$30$28
$28$30
The range of the data is , and the interquartile range is .

Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)

(a) compute the maclaurin polynomial m2(x) for f(x) = cos x. (b) use the polynomial of part (a) to estimate cos π 12. (c) use a calculator to compute the error made using the estimate from part (b) for the value of cos π 12. remember that the error is defined to be the absolute value of the difference between the true value and the estimate.

Which statement justifies why angle ebc measures 90?