Nurse Jackson examines immunization records for this past winter at the school where she works.
Got flu Didn't get flu Total
Vaccinated
120
380
500
Not vaccinated 160
140
300
Total
280
520
800
How many students were not vaccinated and did not get the flu?
A. 140
B. 300
O C. 380
O D. 160
no

The polygon tool to draw a rectangle with a length of 5 units and a height of 3 units. one of the sides of the rectangle falls on line ab , and the rectangle has a vertex of a. each segment on the grid represents 1 unit.

Write the slope intercept equation for line ab.

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).