It is C because a straight line is 180 degrees, eliminating A. That being said, the “bigger angle” is 12x-30 because it is obtuse. B and D are both acute, while C is obtuse. You can also find the answer by finding x as in the equation 3x+(12x-30)=180. By simplification, x=14. So, plugging it in, 12(14)-30=138.
Answer:
Dilate Circle A by a scale factor of 4.
Step-by-step explanation:
Figure 1 shows Circles A (red) and B (green) before any transformations.
Figure 2 shows Circle A dilated about its centre by a factor of 4.
It is now apparent that every radius in A' has a corresponding radius in B, so the circles are similar.
3x^2-6x+5
for ax^2+bx+c=0
discriminant is b^2-4ac
when
1. b^2-4ac>0, there are 2 real roots
2. b^2-4ac=0, there is 1 real root
3. b^2-4ac<0, there are 2 complex roots
3x^2-6x+5
a=3
b=-6
c=5
(-6)^2-4(3)(5)
36-60
-24
answer is -24 is the discriminant
Answer:
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