There are Math books and Science books on a large shelf. The ratio of Math books to Science books is 4:5. If there are 27 total books on the shelf, how many Math books are on the shelf?

12 are math

Step-by-step explanation:

if ratio of math to science is 4 to 5 then 4/9 of 27 are math and 5/9 of 27 are science

27 x 4/9 = 12

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.