Answer:

Step-by-step explanation:
and 

The question is -x/3 = 2 which is 1/3x=2
multiply both sides by 3, and you'll get x = 6
Answer:
These triangles have scale factor 2 : 1 from big one to the small one.
Hope it helps.
Answer:
The area of the shaded region is 7π square centimeters.
Step-by-step explanation:
Note that Circle B has a radius of 3 cm, and the two smaller circles, Circles O and C, both have a radius of 1 cm.
The area of a circle is given by:

Therefore, the area of Circle B, the entire circle, is:

The area of Circle O is:

And likewise, the area of Circle C is:

The area of the shaded area is the area of the Circle B subtracted by the area of Circles O and C. Hence:

Substitute and evaluate:

The area of the shaded region is 7π square centimeters.
Answer:
18
Step-by-step explanation:
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