Ok I guess?
I think I will get them right
That big triangle is made up of 2 congruent 30-60-90 triangles with each base measuring 4.5. You could use the tangent ratio to get tan60 = x / 4.5. Multiply both sides by 4.5 to get 4.5 tan60 = x. Do that on your calculator in degree mode to get that x = 7.79 or 7.8
A straight angle is a flat line, or 180 degrees.So Take that number and divide by 3. I get 60, so I double that to get two thirds, and the answer is 120 degrees.
It’s the square root of 2 (100%)
-b-2>8
add 2 to both sides
-b>10
multiply both sides by -1
b>-10