Answer
10
Step-by-step explanation:
So you know that:
2x+y=14+y
and
5x-y=x+13y
Here you have two equations with two unknown variables:
If you isolate x from the second equations you get:
x=(7/2)y
Insert that in the first equations and solve for y:
2*(7/2)y+y=14+y
y=2
Insert that value for y in one of the two equations (i chose the first):
2x+2=14+2
x=7
Therefore x=7
Hope that helped.
Actually you could start with isolating x, and then insert that in one of the two equations.
Answer:
The slope is 3
Step-by-step explanation:
For this, you do y2-y1 over x2-x1
In this case, 12-0 and 4-0, leaving you 12/4, which is 3.
Hope this helps!
Answer:
90
Step-by-step explanation:
In the quadrilateral formed by two tangents and the associated radii, the central angle and the external angle are supplementary. Here, that means that x° is supplementary to itself, so must be 90°.
x = 90
Answer:
a rational number
Step-by-step explanation:
a rational number + a rational number will always be a rational number.
