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20 of the cats at the pet store are white, which is 25% of all of the cats. How many cats are there at the pet store?
2 answers:
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So,
First, notice that all of the answer options are in completed square form. So all we have to do is complete the square for the initial equation and see which equation it matches.
Isolate the constant term.
Add the necessary amount to both sides (halve the x term and square it).
Factor the completed square.
This equation is identical to the equation in option B.
The correct answer is B.
First, notice that all of the answer options are in completed square form. So all we have to do is complete the square for the initial equation and see which equation it matches.
Isolate the constant term.
Add the necessary amount to both sides (halve the x term and square it).
Factor the completed square.
This equation is identical to the equation in option B.
The correct answer is B.
Answer:
Step-by-step explanation:
It is already in its simplest form. When you simplify a square root, you break the number down into prime numbers.
For example, can be changed into
. Since 2 is in there twice, you'd take it out and make
.
13 is already a prime number, so you cannot simplify it further.