Arecent advertisement claimed that 2 out of every 5 doctors recommend a certain herbal supplement to increase energy levels. if a local hospital employs 90 doctors, how many doctors would you expect to recommend the supplement?

Using the principle of proportional relationship, the expected number of doctors which would recommend herbal supplement is 36

Setting up the relationship thus :

2 = 5 doctors

x = 90 doctors

Cross multiply

5x = 90 × 2

5x = 180

x = 180 / 5

x = 36

Therefore, we expect 36 doctors to recommend the supplement out of the 90 employed.

Learn more : link

36

Step-by-step explanation:

90 x 0.4 = 36

0.4 = 2/5

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions