X = 5
Move the variable then cells to like terms and simplify
1 nickels =$0.05
1 dime= $0.1
let the number of nickels be x and that of dimes be y.
total number of coins is given by:
x+y=42
hence:
y=42-x.......i
total amount of cash will be:
0.05x+0.1y=3.30.........ii
substituting i in ii we get:
0.05x+0.1(42-x)=3.30
0.05x+4.2-0.1x=3.3
-0.05x=-0.9
x=-0.9/(-0.05)
x=18
hence the the number nickels is x=18, the number of dimes will be y=42-x=42-18=24
Answer:
The answer to your question is: k(-5) = -115
Step-by-step explanation:
Function k(n) = n³ - 3n find k(-5)
k(-5) = (-5)³ - 3(-5) substitution
k(-5) = -125 + 15 simplify
k(-5) = -115
I have actually, but all I did was block the number, as I was not aware that they had any of my details.
