Answer: 130
Step-by-step explanation:
Let x be the original number of hip- hop CDs in the music store.
Given : A music store has sold 3/5 of their hip-hop CDs, but 10 were returned.
i.e. The number of hip- hop CDs in the store will be :
Original No. of CDs - CDs sold + CDs Returned
![x-\dfrac{3}{5}x+10](https://tex.z-dn.net/?f=x-%5Cdfrac%7B3%7D%7B5%7Dx%2B10)
If the store has 62 Hip-Hop CDs now , then required euation will be :-
![x-\dfrac{3}{5}x+10=62](https://tex.z-dn.net/?f=x-%5Cdfrac%7B3%7D%7B5%7Dx%2B10%3D62)
Subtract 10 from both sides , we get
![x-\dfrac{3}{5}x=52](https://tex.z-dn.net/?f=x-%5Cdfrac%7B3%7D%7B5%7Dx%3D52)
![\Rightarrow\ \dfrac{5x-3x}{5}=52](https://tex.z-dn.net/?f=%5CRightarrow%5C%20%5Cdfrac%7B5x-3x%7D%7B5%7D%3D52)
![\Rightarrow\ \dfrac{2x}{5}=52](https://tex.z-dn.net/?f=%5CRightarrow%5C%20%5Cdfrac%7B2x%7D%7B5%7D%3D52)
![\Rightarrow\ x=52\times\dfrac{5}{2}=130](https://tex.z-dn.net/?f=%5CRightarrow%5C%20x%3D52%5Ctimes%5Cdfrac%7B5%7D%7B2%7D%3D130)
Hence, the number of CDs they originally have = 130
False.
Only log(x^2)=2log(x)
For example, let x=10
(log(10))^2=1^2=1
yet 2log(10)=2*1=2
286. you just subtract the two numbers
Answer:
40
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Step-by-step explanation:
4÷1/2=8
5×8=40