Answer:
:-):-)
Step-by-step explanation:
1) p<1000
2)p>500
3)By combining the above two, we get: 500<p<1000
Andre will agree as he thinks that the no. of paper clips in the box is less than 1000. But lin will not as she thinks that the no. of clips is more than 500.
4)This time, they both will agree as the no. of paper clips is more than 500 but less than 1000.
The correct answer is -5n+1
Work in volumes of pure acid
Vol pure acid in 15% solution = 36*0.15 = 5.4 L
Volume of pure acid when x L of pure acid has been added = 0.40(x + 36)
so x + 5.4 = 0.40(x + 36)
x + 5.4 = 0.40x + 14.40
0.60x = 14.4 - 5.4 = 9
x = 9 / 0.6 = 15 L
Answer is 15 liters
