Is the expression a monomial? explain. qs + 5 yes; it only has one term with a variable. yes; it only has variables and numbers. no; it is a binomial. no; it is a product.

A monomial has only one term (mono means one). These are examples of monomials:

1) 5xyz,
2) 19m^2 n^2 p^2,
3) x,
4) abc.

qs + 5 has two terms: qs and 5. Then it is a binomial (bi means two).

Therefore, the right answer is: No, it is a binomial.

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!