|
What amount of each mixture, one 95% alcohol nad the other 15% alcohol, must be used to make 10 liters of a mixture which is 45% alcohol?
What equation or equations will express this problem?
1. 0.95x + 0.15y=10
0.45(x+y)=0.45*10 star is multiply
2. 0.95x + 0.15x=0.45
3. 0.95x + 0.15(10-x)=0.45*10
4. x+y=10
0.45x+0.95y=0.45*10
second question
A lever 12m long balances weight of 48kg on one end and 24kg on the other end. Find the length of the two arms of the lever.
third question
How is the following system of equations classified?
fourth qestion
A bicyclist and a hiker leave the same place at the same time and travel in the same direction. the bicyclist travels three times as fast as the hiker. At the end of 3 hr they are 24 miles apart. How fast does the hiker travel?
can I get help with any type of calculus qestion?
You have to be a registered user to answer this question!
This feature of our site requires you to log in or register.
Click here to register, it is free!
Register in one easy step!.
Reset your password if you forgot it.
| |
