Answer:
31
Step-by-step explanation:
Answer: (not enough information) Is there a picture that goes along with the problem?
Step-by-step explanation:
The area of a triangle is base length x height then divide all by 2,
so 12 x 10 /2
=60 ft²
Any of the tens i think (10=60, 20+50, etc.), but i am not too sure what is implied by regrouping. if i am right in thinking this only means "carrying" a digit after adding, then anything that adds up to 70 would work unless the sum of the digits in the ones place exceeded 9.