Answer: C
<BFE is 148 degrees
Step-by-step explanation:
We have angles <BFC (57 degrees) and <CFD (34 degrees), but what is <DFE?
1. The angle symbol in the vertexes shows that <BFC is congruent to <DFE, meaning that they are the same
2. Knowing this, we can safely say that <DFE is equal to 57 degrees because <BFC is also 57 degrees.
3. Now, we have all the angles we need to find out <BFE.
4. <BFC+<CFD+<DFE=<BFE
5. Substitute to get
57+34+57=<BFE
91+57=<BFE
148=<BFE
6. Now we know that the answer is 148 degrees.
centre: (0,0)
Radius: square root of 30
A = 1/2*b*h
6.22 = 1/2*3.11*h
6.22 = 3.11/2*h
6.22*2 = 3.11*h
12.44 = 3.11*h
12.44/3.11 = h
4 = h
so height is 4 meters
3(x+2) -x < 8
Simplify the left side:
3x + 6 -x < 8
2x + 6 < 8
Subtract 6 from both sides:
2x < 2
Divide both sides by 2:
X < 1