Answer:
no solutions
Step-by-step explanation:
10x+2y=42
5x+y=20
Multiply the second equation by -2 to use elimination
-2(5x+y)=20*-2
-10x -2y = -40
Add this to the first equation
10x+2y=42
-10x -2y = -40
--------------------------
0 = 2
This is never true. This means there are no solutions
Answer: Well you’re solving for “x,” so you’ll need to isolate this variable. This means we need to “get rid of” the fraction 2/3 that is attached to it. The faction is attached by the operation multiplication, so to remove it we must divide it on both sides. And division with fractions requires the reciprocal. (Try watching an explanation if you’re confused on why division requires reciprocals).
Answer:
The answer is B
Step-by-step explanation:
r = c/2π
c = 16π
r = 16π/2π
= 8
I think it represent the a point on a graph
Answer:
The first thing you do is make the denominators equal on both sides.
Step-by-step explanation:
As a example if you have the equation:
+ 
=
you would multiply the denominator by the smallest multiple. I would do 2 * 5= 10
this would make the equation
next you have to do the same with the numerator.
so sence you multiplied the by five you will get 
same with the other fraction except you multiplied it by two. x 2 = 
next you add and simplify if needed
