Do a number line and put the numbers
Answer:
(x,y)—>(6,2)
Step-by-step explanation:
Add both equations to eliminate y
9x=54
x=6
plug x=6 into either equation
2(6)+6y=24
6y=24-12
y=12/6=2
Answer:
A) 32
Step-by-step explanation:
f(x) = 2x² - 24x
If f(x) = 1280, then 2x² - 24x = 1280
Subtract 1280 from both side ⇒ 2x² - 24x - 1280 = 0
Divide both sides by 2 ⇒ x² - 12x - 640 = 0
Factorise ⇒ (x - 32)(x + 20) = 0
Solve ⇒ x = 32 or -20
Therefore, x = 32 (as x ≥ 0)