Answer:
Angle H=128°
Explanation:
1. set your two known equations equal.
5y+47°=7y+45°
2. solve for Y.
y=1
3) 5(1)+47=52°
7(1)+45=52°
4. add angles together 52+52=104
5. all angles of a rhombus must equal 360°
6. 360-104=256
7. Divide anwser by 2 since there are two unknown angles and angle h and j are equal.
8. 256÷2=128
9. h=128°