cathyjuan
27.10.2019 •
Mathematics
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Ответ:
Step-by-step explanation:
1. x + 5.3 = 10.1
combine the like terms
x = 10.1 - 5.3
x = 4.8
2. x - 4.2 = 12.9
combine the like terms
x = 12.9 + 4.2
x = 17.1
3. 1.5x = 60
divide both sides by 1.5
x = 60/1.5
x = 40
4. x/1.3 = 1.8
cross multiply
1.3 goes to 1.8 and x stands alone
x = 2.34
Hope this helps
Ответ:
m∠X + m∠Y + m∠Z = 180°
m∠X + m∠Y = 180°- m∠Z
m∠Z > 180° - m∠Z
2 m∠Z > 180° /:2
m∠Z > 90° ( A, B and C are not possible )
D ) m∠X + m∠Y < 90°