Answer: -10 + 144
Step-by-step explanation:
Subtract alike terms (2x -12x) since the 144 does not have a variable you cannot subtract it
<h2>(x, y) = (21/13 , 84/13)</h2>
Step-by-step explanation:
x + 3y = 21
- 4x + y = 0
y = 4x
<h2>_____________</h2>
x + 3y = 21
x + 3(4x) = 21
x + 12x = 21
13x = 21
x = 21/13
y = 4x
y = 4 (21/13)
y = 84/13
(x, y) = (21/13 , 84/13)
Answer:
<h2>f(-2) = 12.5</h2>
Step-by-step explanation:

f(-2) → put t = -2 to the equation of the function:

Use 
