Answer: Substances.
Step-by-step explanation:
Battery acid,
Coke,
Vinegar,
Blood,
Beer,
Soda,
Urine,
Saliva,
Eggs.
In a triangle, the three interior angles always add to 180°
m∠R + m∠S + m∠<span>T = 180
</span><span>(2x+10) + (2x+25) + (x-5) = 180
</span>2x+10 + 2x+25 + x-5 = 180
5x + 30 = 180
5x = 150
x = 30