Answer:
19km
Step-by-step explanation:
The formula for the perimeter of a triangle is: S+S+S.
So;
19km+19km+a=57km
a=57km-19km-19km
=19km
Answer:
780
Step-by-step explanation:
you just found anything that is higher than 5 to the next tenth
27 is the answer to this question
Answer:
1/6
Step-by-step explanation:
the distributive property one side has to equal the other
Turn the mixed number in to a fraction
7/4 x 2/5
14/20 = 7/10
7/10, Hope this helps!