In a winter of an epidemic flu, 2000 babies were surveyed by a well-known pharmaceutical company to determine if the company's new medicine was effective after two days. among 120 babies who had the flu and were given the medicine, 29 were cured within two days. among 280 babies who had the flu but were not given the medicine, 56 were cured within two days. is there any significant indication that supports the company's claim of the effectiveness of the medicine?

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

you have 6 equal triangles, find the area of one of them (b*h/2) and multiply by 6

(8*4: 2)*6 =

32 cm² is your answer

well, because the $0.25 is an added cost depending on how many minutes, the answer would be y = 30 + 0.25x.