Answer:

Step-by-step explanation:
This is an isosceles triangle, therefore you must <em>double</em><em> </em><em>up</em><em> </em><em>D</em><em>A</em><em> </em>to get 40.
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1.
3x + 3 = 21
3x = 21-3
3x = 18
x = 18/3
Therefore,
x = 6
So option ( B) is the correct one.
2.

Therefore option (B) is the correct one here too.
Answer:
60
Step-by-step explanation:
A circle is 360 degrees. If we rotate through 1/6 of the circle
360 *1/6 = 60
We rotate through 60 degrees
A ton is 2,000 lb , so 2 tons would be 4,000 lb. 4,000+445.5=4,445.5
The two elephants combined weigh 4,445.5 lb.