What is the ratio of $.81 to $1 and $2.63 to $1?
2 answers:
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<em>Option:</em>
<em>a. for every 13 dogs, there are 25 cats. </em>
<em>b. there are twice as many cats as dogs at the shelter. </em>
<em>c. the shelter has more dogs than cats. </em>
<em>d. there are 25 animals in the shelter.</em>
Answer:
a. for every 13 dogs, there are 25 cats.
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Step-by-step explanation:
Represent Dogs with D and Cats with C;
So;
By comparison:
This implies that:
For every 13 D, there are 25 C
Hence: Option A is true
You can factor a parabola by finding its roots: if
has roots , then you have the following factorization:
In order to find the roots, you can use the usual formula
In the first example, this formula leads to
So, you can factor
The same goes for the second parabola.
As for the third exercise, simply plug the values asking
you get
Add 3 to both sides:
Divide both sides by 1.5: