Answer:
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K=y•x
Inverse means 1/variable
y=k•1/x
y=k/x
k=y•x
x=5
y=2.4
k=2.4 • 5
k=12
Answer is:
y=12/x
Good luck.
Let nails 7/pound=N1
nails 3/pound=N2
let N1=x
N2=6
then total=x+6
7x+6*3=(x+6)*4
7x+18=4x+24
3x=6
x=2
so 2 pounds on Nails costing 7/pound must be added
Answer:
B
Step-by-step explanation:
Since the denominators are different, you multiply the denominators together to get 12. Now that you have a new denominator, the numerator has to change. You multiply the numerator by 12. (This is a terrible explanation, I'm sorry.)
Answer:
-2480
Step-by-step explanation:
31 * -80 =-2480
Not sure how to explain this more, but I hope this helps!
