Step-by-step explanation:
distance between (12.-7) and (-3, -7)

=12+3
=15 units
Answer: 8
Step-by-step explanation:
Given
Lian has
and she has twice as many dimes as nickels
Suppose she has
nickels
So, the number of dimes is 
Nickel is equivalent to 5 cents and dime is equivalent to 10 cent

Therefore she has 8 dimes with her.
Answer:what is cop?
Step-by-step explanation:
The area of triangle BXA is 15*sqrt(2).