Answer:
x≥4
Step-by-step explanation:
We want to solve for x in

Let us add 3 to both sides:

We simplify to get:

Divide through by 2 to get:

All sides of an equilateral triangle are equal, so all three sides are 9 cm.
To find h, use the pythagorean theorem. This requires use of only one right triangle, where we use b as our h.
a^2+b^2=c^2
(4.5)^2+b^2=(9)^2
(20.25)+b^2=(81)
b^2=(81/20.25) or 4
square root both sides
b=2
8y^2 + 12x - 4y^2 + 24x
= 4y^2 + 36x
Answer:nothin much
Step-by-step explanation: