The y-term has a coefficient of -3, and the x-term has a coefficient of 1. the expression does not have a constant term. which expression could she have written?

" -3 y + x"

Step-by-step explanation:

There seems to be a term in the variable "y" and another one in the variable "x". The coefficient of the term in y is "-3" which means that the term in the variable "y" should read: = -3y".

The coefficient of the term in x is "1", which means that this term should read: "1 x", or simply "x".

There is no "constant" term, which means that there is no term with just a numerical value (and no letters).

Therefore, the most likely expression the person could have written is: " -3 y + x"

none of the option is correct.

step-by-step explanation:

it says to find which expression equals 9^3 sqrt 10 = ?

9^3 sqrt 10 = 729 sqrt 10.

checking option a. 5 sqrt 10 + 4 sqrt 10

5 sqrt 10 + 4 sqrt 10

= 9 sqrt 10.

checking option b. 5^3 sqrt 10 + 4^3 sqrt 10

5^3 sqrt 10 + 4^3 sqrt 10

= 125 sqrt 10 + 64 sqrt 10

= 189 sqrt 10.

checking option c. 5 sqrt 10 + 4^3 sqrt 10

5 sqrt 10 + 4^3 sqrt 10

= 5 sqrt 10 + 64 sqrt 10

= 69 sqrt 10.

checking option d. 5^3 sqrt 10 + 4 sqrt 10

5^3 sqrt 10 + 4 sqrt 10

= 125 sqrt 10 + 4 sqrt 10

= 129 sqrt 10.

hence, none of the option is correct.