X+4y=10
-x+5y=8
what is the solution set

x=2  y=2

(2,2)

Step-by-step explanation:

We can solve this system by elimination.

x+4y=10

-x+5y=8

9y = 18

Divide each side by 9

9y/9 = 18/9

y =2

Now we need to find x

x +4y =10

x +4(2) = 10

x +8 =10

Subtract 8 from each side

x+8-8 = 10-8

x=2

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180