The duration of routine operations at Charlotte General has approximately a normal distribution with an average of 125 minutes and a standard deviation of 18 minutes. a. What proportion of operations last at least 120 minutes?
b. What proportion of operations lasted between 90 and 130 minutes?
c. What proportion of operations lasted less than 122 minutes?

Find the arc length parameter along the given curve from the point where tequals=0 by evaluating the integral s(t)equals=integral from 0 to t startabsolutevalue bold v left parenthesis tau right parenthesis endabsolutevalue d tau∫0tv(τ) dτ. then find the length of the indicated portion of the curve r(t)equals=1010cosine tcost iplus+1010sine tsint jplus+88t k, where 0less than or equals≤tless than or equals≤startfraction pi over 3 endfraction π 3.

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27