Angle QRT is an exterior angle to the triangle. The rule is that the exterior angle of a triangle is equal to the sum of its remote interior angles. Those remote interior angles are angle RTS and angle TSR. So our equation is 
. We can remove the parenthesis and simplify by combining like terms to get 9x = 5x + 9 + x and 9x = 6x + 9 and 3x = 9. That means that x = 3.
Use the drop-down menus to complete each equation so the statement about its solution is true. 5−4+7x+1=
1 answer:
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<u>Answer:</u>
(2, 7) or (-6, 1)
<u>Step-by-step explanation:</u>
We are given two equations:
; and
Since y is the subject for both the equations so we can put the values of y equal to each other to get:
Factorizing the expression to get:
Putting x = 2 and x = -6 in any of the equations to get the values of y:
and
Therefore, solution to these equation is (2, 7) or (-6, 1).