If a 12 oz bottle of shampoo lasted for 16 weeks, we have a ratio of 12:16 which can be shortened to 3:4.
Now if we have 18 oz bottle we know that it's 1/2 more than 12 oz bottle, so the ratio will be also 1/2 more. So if it was 12:16, the new ratio will be:
12 + (1/2 * 12) : 16 + (1/2 * 16)
12 + 6 : 16 + 8
18 : 24
It means that 18 oz bottle should last for 24 weeks. Of course the ratio has to stay the same in its lowest form in both situations and as 18:24 can be shortened to 3:4, it proves it's correct :)
Reta a:
reta x:
Retas paralelas possuem coeficientes angulares iguais ⇒ mₐ=mₓ
(-4,-2)
∴
y=3/4x+1
Answer:
Many techniques will simplify your work as you perform operations with algebraic fractions. As you review the examples, note the steps involved in each operation and any methods that will save you time.
A parallel set of lines are two lines that do not touch one another, but are on the same plane and are equidistant forever. Think about two highways that run next to each other but never touch or cross. CF, therefore, could be parallel to BE, AH, and DG.
