When doing blood testing for a viral infection, the procedure can be made more efficient and less expensive by combining partial samples of different blood specimens. if samples from four people are combined and the mixture tests negative, we know that all four individual samples are negative. find the probability of a positive result for four samples combined into one mixture, assuming the probability of an individual blood sample testing positive for the virus is 0.06.

step-by-step explanation: 4 cause 2+2=4

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock

it has to have an angle of 90 degrees

time is equal to distance over rate so

t = d/r

need a little bit more information for the second question.