Answer:
The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other.
Step-by-step explanation:
Answer:
14.5945195193
Step-by-step explanation:
Answer:
135
Step-by-step explanation:
The equation is 135+90+x=360. x=360-(225)=135
Answer:
57 mph
Step-by-step explanation:
just devide 342 by 6
The perimeter is the distance all the way around.
That's the sum of all the sides.
A triangle has 3 sides.
In an equilateral triangle, they're all the same length.
If one of them is 9.9 cm, then all of them add up to (3) · (9.9 cm) .
