Answer:
-3/4
Step-by-step explanation:
-1 1/4 + 1/2 = -5/4 + 1/2 = -5/4 + 2/4 = -3/4
Please help! -screenshot-
A chemist wants to dilute a 30% phosphoric acid solution to a 15% solution. He needs 10 liters of the 15% solution. How many liters of the 30% solution and water must the chemist use?
The chemist needs to use 5 liters of the 30% solution and 5 liters of water.
Answer:
30% solution x liters
30%(water) 10-x liters
15% 10 liters
Step-by-step explanation:
Please help, screenshot!
Answer:
4/7
Step-by-step explanation:
class total = 21
chance of picking one of 12 boys out of 21.
12/21 which can be simpilfied to 4/7
Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?