Answer: $8.25 is your answer.
Step-by-step explanation:
12 x 3 = 36
2.75 for 12 so 2.75 times 3 = 8.25
Per cent means out of 100. 47/100
Answer:
x=1,2
Step-by-step explanation:
x^2-3x+2=0
(x-1)(x-2)
x-1=0
x-2=0
x=1,2
Answer: ![x=\frac{3}{5}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B3%7D%7B5%7D)
Step-by-step explanation:
Move all terms to one side.
![25x^2+9-30x=0](https://tex.z-dn.net/?f=25x%5E2%2B9-30x%3D0)
Rewrite
in the form
, where
and ![b=3](https://tex.z-dn.net/?f=b%3D3)
![(5x)^2-2(5x)(3)+3^2=0](https://tex.z-dn.net/?f=%285x%29%5E2-2%285x%29%283%29%2B3%5E2%3D0)
Use the Square of Difference: ![(a-b)^2=a^2-2ab+b^2](https://tex.z-dn.net/?f=%28a-b%29%5E2%3Da%5E2-2ab%2Bb%5E2)
![(5x-3)^2=0](https://tex.z-dn.net/?f=%285x-3%29%5E2%3D0)
Take the square root of both sides.
5x-3=0
Add 3 to both sides.
5x=3
Divide both sides by 5.
x= 3/5