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loran55667
29.09.2019 •
Mathematics
2x+4y=2 2x-2y=-8 using system of elimination
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Ответ:
2x-2y=-8
+
-2x-4y=-2
SO: 2x-2x= 0. -2y-4y= -6y and -8-2= -10. The new equation is: -6y=-10 so y= 5/3. Then you plug that in for x and you get (for the first equation) 2x-10/3=-8. -8+10/3= 2x. 2x= -14/3. x=-7/3.
Plug this back in and check.
Hope this helps, happy solving! :)
Ответ:
see below
Step-by-step explanation:
Let's solve for x first. Since opposite sides of a parallelogram are congruent, 5x = 5 which means x = 1. Similarly, opposite angles of a parallelogram are congruent so m∠X = m∠V = 107°. Since ∠YWV and ∠XYW are alternate interior angles, that means that ∠XYW = 42°.