Kilo = 1,000
Hecto = 100
Deca = 10
Base (unit) = 1
Deci = 0.1
Centi = 0.01
Milli = 0.001
Answer:
We have been given an equation ![x^2+9x+20=0](https://tex.z-dn.net/?f=x%5E2%2B9x%2B20%3D0)
We will factorize it by middle term splitting.
Step 1: ![x^2+5x+4x+20=0](https://tex.z-dn.net/?f=x%5E2%2B5x%2B4x%2B20%3D0)
Taking common factors out by clubing first two terms ad last two terms
Step 2: ![x(x+5)+4(x+5)=0](https://tex.z-dn.net/?f=x%28x%2B5%29%2B4%28x%2B5%29%3D0)
Step 3: ![(x+4)(x+5)=0](https://tex.z-dn.net/?f=%28x%2B4%29%28x%2B5%29%3D0)
Equating both above factors to zero as:
Step 4: ![(x+4)=0\Rightarrow x=-4](https://tex.z-dn.net/?f=%28x%2B4%29%3D0%5CRightarrow%20x%3D-4)
And
.
Answer:
18% and 0.18
Step-by-step explanation:
converting fraction 9/50 as a percent leaves u with 18%
This is a proportion so
6/15=2/c
make the left side top number equal to the right side top number and you will find c
6/15=2/c
6/3=2
6/15 times (1/3)/(1/3)=2/5
2/5=2/c
c=5
the other way is multiply both sides by c/2
6c/30=1
multiply both sides by 30
6c=30
divide both sides by 6
c=5