<u>First Solution</u>
-2x + y = 1
-2x + 2x + y = 1 + 2x
y = 1 + 2x
<u>Second Solution</u>
-2x + y = 1
-2x + y - y = 1 - y
<u>-2x</u> = <u>1 - y</u>
-2 -2
x = -0.5 + 0.5y
0.5 + x - x = -0.5 + 0.5 - x + 0.5y
0.5 = -x + 0.5y
-0.5y - 0.5 = -x + 0.5y - 0.5y - 0.5
2 · (-0.5y) = 2(-x - 0.5)
y = -2x - 1
<u>Third Solution</u>
-2x + y = 1
-2x + y - 1 = 1 - 1
-2x + y - 1 = 0
-2x + 2x + y - 1 = 2x
y - 1 = 2x
y - 1 + 1 = 2x + 1
y = 2x + 1
Answer:
x+y=-10
x-y=-2
Step-by-step explanation:
The answer is 10 people. The way you know is because the surveyor asked the person for one answer, so if you results were 1, 0, ,10 ,7 ,13 ,2 ,9,15 ,0 and 3, then obviously only 10 people were asked because you have 10 answers.
Answer: altitude at starting point is -11ft or 11ft below sea level
Step-by-step explanation:
Equation for this situation will be
A = Ag - 11
A = actual altitude
Ag = altitude gained.
At starting point, altitude gained is zero, therefore;
A = 0 - 11
A = -11ft
Answer:
25
Step-by-step explanation:
Formula
2xy + 1
Givens
x = 3
y = 4
Solve
2*(3)*(4) + 1
24 + 1
25
