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!
Answer:1100
Explanation:89% of 10,000 is 8900 subtract 8900 from 10,000 bam you got 1100
your welcome
Answer:
y=-10
Step-by-step explanation:
y=-2(3)-4
y=-10
14/112 = 7/56 = 1/8
Hope it helps
Tryfind the relationships between x and y.
I am sure that it is y=4x because when you multiply 4 to the -2 it becomes -8...
and then you plug in the 32 into the y:
32=4x
then divide 4 from the both sides for the value of x.
<u>x=8</u>