Sale price = $450
original price = 25%y
dicount = +20%
solution = $450 × 45%
= $202.5
= $652.5
i am a mathematics teacher. if anything to ask please pm me
True. An equilateral has equal sides, which is possible, and <span>equiangular Has equal angles, which if you have same side lengths, have same angles; right angles</span>
Answer:
7.5 meters
Step-by-step explanation:
7500÷1000=7.5
You divide by 1000
Assume you need x liters 10% acid, y liters 80% acid
Then 10%x + 80%y = 65%*70, and x+y = 70
I get: x = 15, y = 55
