Answer:
128
Step-by-step explanation:
Set this up as a proportion with miles on the top and km on the bottom:
If we want to know how many km are in 80 miles, we put the variable with the km stuff on the bottom and 80 on top and cross multiply to solve for the variable:
so
5x = 640 and
x = 128
That means that 80 miles is equivalent to 128 km
Answer- (-47)
Pow de Dow wow
Answer: this is not worth 5 points
Step-by-step explanation:
Check the picture below
is a right-triangle, and you can pretty much see how long "y" and "x" are.
make sure your calculator is in Degree mode.
Answer:
Let 2x + y - 10 = 0 be equation (a).
Let x - y - 5 = 0 be equation (b).
Make y the subject in equation (b):
Substitute for y in equation (a):
Find y in any equation of your choice:
