Let the first number be x and decide number be y
therefore x+y = -42
also. x-y = 52 using the process of elimination
we get: 2x = 10
we divide both sides by 2, which gives us x=5
then we substitute the value of x in the first equation
that gives us. 5+y = -42
thus. y = -47
Not enough information
Explanation: in order for them to be congruent it must have at least two equal sides or 2 equal angles
871 miles ........... 13 hours
469 miles ............x hours
x = 469×13/871 = 7 hours
Answer: The answer for x is 28.
Step-by-step explanation: Divide 70 by 10 and you get 7, which is the slope. Then multiply 4x7 and that gets you 28!
