9. A hot cup of coffee cools according to the equation IT * (t) = 68 * (1/2) ^ (1/22) + 18 where T(t) the temperature, in degrees Celsius, and is the time in minutes . a) Which part of the equation indicates that it models exponential decay ? b) What value of t makes the exponent in the equation equal to 1? c) What is the significance of this value? d) What was the initial temperature of the coffee e) Determine the temperature of the coffee after 40 min to the nearest degree

Drag and drop the answers into the boxes to complete this informal argument explaining how to derive the formula for the volume of a cone. since the volume of a cone is part of the volume of a cylinder with the same base and height, find the volume of a cylinder first. the base of a cylinder is a circle. the area of the base of a cylinder is , where r represents the radius. the volume of a cylinder can be described as slices of the base stacked upon each other. so, the volume of the cylinder can be found by multiplying the area of the circle by the height h of the cylinder. the volume of a cone is of the volume of a cylinder. therefore, the formula for the volume of a cone is 1/3 1/2 1/3πr^2h 1/2πr^2h πr^2h πr^2

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

Me asap on # : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.