C = 2 pi r
C = 2 pi 15
C = 30 pi in.
answer is A. 30 pi in.
Answer:
9
Step-by-step explanation:
- so lets use a variable for this so if this (_____) = x
you're equation would be x-11=(-2)
2. Add 11 to both sides
x-11=-2
x-11+11=-2+11
3. x=9
4. 9-11=-2
9-11+11=-2+11
Therefore your answer is 9
Answer:
Step-by-step explanation:
Both pairs of vertical angles formed at point E are equal. Therefore, the two triangles share two angles. If two triangles share two angles, they must also share the third angle, since the sum of the interior angles of a triangle add up to 180 degrees. Therefore, all three angles of the two triangles are equal, which is a proof of similarity.
Solve for x of first equation,
17-3=8x
14=8x
7/4 = x
x= 7/4
Put the x value in 4x+9,
4x+9 = 4(7/4) + 9 = 7+9 =16
Therefore, the value of 4x+9 is 16.