James used substitution to solve this system of equations which equation could be the result of his first step?

OPTION D.

Step-by-step explanation:

Given the sytsem of equations:

1-  Solve for one of the variables from any equation and substitute it into the other equation.

2- Solve for the other variable in order to get its value.

3-  Substitute this value  back into one of the original equations. and find the value of the other variable.

In this case youu can observe that the second equation is already solved for "y", therefore, in  order to use the Substitution Method, the first step is: Substitute the second equation into the first one.

Therefore, the  equation that could be the result of James' first step is:

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

4x and 6y

im not sure though