Answer:
1. x= - 20/13
2. 7x-21
Step-by-step explanation:
It only has two number sentences because 81 divided by anything else wont work only 9 would. Also since 9 times 9 is equal to 81
Answer:
18 more bags
Step-by-step explanation:
87 + 95 = 182
200 - 182 = 18
Let x be your first alloy
2/5x+7/10(30-x)=1/2(30)
4x+210-7x=150
3x=60
x=20
So, you need 20 lbs of the first alloy, and 10 parts of the second to make 30 lbs of half iron and half silver alloy!
