Let the number of hour it took them to have completed the same number of problems be x, then
15 + 10x = 9 + 12x
12x - 10x = 15 - 9
2x = 6
x = 6/2 = 3
After 3 hours, they must have completed the same number of homeworks.
Answer:
x= - 16
Step-by-step explanation:
substitute y=0 then multuply both sides move the variable to the left and change the sign.
Answer:
B
Step-by-step explanation:
Answer:
a²+b²=c²
Step-by-step explanation:
a= side of right triangle
b= side of right triangle
c= hypotenuse
Hope this helps have a nice day:)
