An object travels back and forth along a straight line. Its velocity, in centimeters per second, is given by the function v(t) = Equals 13 sine (StartFraction pi Over 45 EndFraction t), where t is time in seconds. What is the maximum velocity of the object?

0 cm/s
13 cm/s
26 cm/s
90 cm/s

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.

I've been working on this for a few days and i just don't understand, it's due in a few hours. you.the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α.part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part bsuppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i.e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case.part cnow try a numerical problem. what is the direction of the vector w = < -1, 6 > ?

Awoman who is 64 inches with a shoulder width of 16 inches. write an equation relating the height h to the width w. find the height of a woman who has ashoulder width of 18.5 inches