I will give two solutions, one where everything is cubed and one where just the 3 is cubed, because I don't know what you meant.
Just the 3 is cubed solution(Which I think is correct because it has a nicer answer):
Answer:
Step-by-step explanation:
We have that 
.
We can subtract 
from both sides of the equation to get 
.
We can then divide by 
to get 
.
So, 
and we're done!
Everything is cubed solution:
Answer:
![\sqrt[3]{5}-3/2](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B5%7D-3%2F2)
Step-by-step explanation:
We have that 
.
We can take the cube root of both sides to get ![2x+3=\sqrt[3]{40}](https://tex.z-dn.net/?f=2x%2B3%3D%5Csqrt%5B3%5D%7B40%7D)
.
Note that 
, so ![\sqrt[3]{40}=\sqrt[3]{2^3*5}=2\sqrt[3]{5}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B40%7D%3D%5Csqrt%5B3%5D%7B2%5E3%2A5%7D%3D2%5Csqrt%5B3%5D%7B5%7D)
.
So, we want to solve ![2x+3=2\sqrt[3]{5}](https://tex.z-dn.net/?f=2x%2B3%3D2%5Csqrt%5B3%5D%7B5%7D)
.
We can subtract 
from both sides to get ![2x=2\sqrt[3]{5}-3](https://tex.z-dn.net/?f=2x%3D2%5Csqrt%5B3%5D%7B5%7D-3)
.
We can then divide both sides by to get ![x=\sqrt[3]{5}-3/2](https://tex.z-dn.net/?f=x%3D%5Csqrt%5B3%5D%7B5%7D-3%2F2)
.
So, ![\boxed{x=\sqrt[3]{5}-3/2}](https://tex.z-dn.net/?f=%5Cboxed%7Bx%3D%5Csqrt%5B3%5D%7B5%7D-3%2F2%7D)
and we're done!
-1.1% is the decrease in cost
Answer:
14 nickels
7 dimes
Step-by-step explanation:
1. find out how many dimes there has to be to get $1.40
1 dime= .10
1.40/.10=14 dimes
14/2=7
so there are 7 dimes
since a nickel is half the amount of a dime there will be twice as many to make up the other half which is $0.70
.70/.05=14
there are 14 nickels
proof:
$0.10(7)+$0.05(14)= $1.40
hope this helps!
The actual area is 10×15=150, so
1/5×15=3
1/5×10=2
3×2=6, so
The area of the rectangle is multiplied by:
150÷6=26
The answer is 3 :) hope this helped. Btw all the explanation is in the picture
