Answer:
x2 +2x−xy when x = 250 and y = −120 ... sic Algebra: Patterns and Equations (13:18)
Step-by-step explanation:
Answer:

Step-by-step explanation:
The equation to solve is:

To get rid of the "square", we need to take square root of both sides:

Then we use algebra to find the value(s) of x. Remember, when we take square root, we have to add up a "+-" (on the right side). Shown below:

So these are 2 answers for x.
Answer:
x = 23
Step-by-step explanation:
AE = EC
so, 5x + 3 = 118
5x + 3 = 118
Bring +3 to the other side so -3
5x = 118 - 3
5x = 115
Bring 5 to the other side so:
x = 115 ÷ 5
x = 65
The correct answer is B -8 just do the work :)
Answer:
x = 4, y = 9.
Step-by-step explanation:
3x -2y = -6 and y = x+5
Substitute y = x + 5 in the first equation:
3x - 2(x + 5) = -6
3x - 2x - 10 = -6
x = -6 + 10
x = 4
So y = 4 + 5 = 9.