Break into 2 equatins to get x's:
2x-6<4 and 2x-6>-4
Solve for x in both:
2x-6<4
2x<10
x<5
2x-6>-4
2x>2
x>1
Graph both inequalities on the same number line:
<---0-----1-----2-----3-----4-----5-----6--->
Answer:
The cost will be $16 for four attendees.
Step-by-step explanation:
Cost for one attendee: $12 ÷ 3 = $4
Cost for four attendees: $4 × 4 = $16
So, it says x + y = -2
we just plug in the numbers so,
2 + - 4 = -2
This equation is true and can also be written as
2 - 4 = -2
It also then says that 2x - y = 8
Again, you just plug in the numbers
2 * 2 - (-4) = 8
This equation is true and can also be writen as,
2*2 + 4 = 8
Rationalise the denominator of 1/2√3
Detailed answer is in the image attached.
Hope it helps you....
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F = 2 solutions
G = 2 solutions
H = infinitely
J = 2
