First, factor out a 3.
3(x² - 9)
In any quadratic ax² + bx + c, we can split the bx term up into two new terms which we want to equal the product of a and c.
In this case, we have x² + 0x - 9. (the 0x is a placeholder)
We want two numbers that add to 0 and multiply to get -9.
Obviously, these numbers are 3 and -3.
Now we have 3(x² + 3x - 3x - 9).
Let's factor.
3(x(x+3)-3(x+3))
<u>3(x-3)(x+3)</u>
There are multiple shortcuts which you could make here, FYI:
Instead of splitting the middle, if your a value is 1, you can go straight to that step (x+number)(x+other number).
Whenever you have a difference of squares, like a²-b², that factors to (a+b)(a-b).
3/5 converted to percentage gives 60%
How do we convert a fraction to a percentage?
First and foremost, the maximum percentage value any number could have is 100% , hence, in order to convert a number or fraction or even a decimal to percentage, we simply multiply it by 100
3/5 to percent:
In order to convert 3/5 to percentage, we would multiply by 100
3/5=3/5*100
3/5 in percent=300/5
3/5 in percent=60
3/5 in percent =60%
As a result, the correct option is 60%,which is the third option, option C
Find out more about percentage on:brainly.com/question/18488471
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Full question:
Convert 3/5 to a percent.
A.30%
b.35%
c.53%
d.60%
Answer:
m= 450 - (5*n)
Step-by-step explanation:
m is the money left
n is the days
Answer:
6/90/45/30/18/9/2
Step-by-step explanation:
15: 3/5/15/1
45: 45/1/9/5/15/3/
90: 90/1/9/10/45/2/15/6/3/30/5/18
Answer:
Answer as a fraction: 4/15
Answer as a decimal: 0.267
The decimal version is approximate rounded to three decimal places.
Step-by-step explanation:
6 apples, 4 peaches
6+4 = 10 pieces of fruit total
The probability of picking an apple is 6/10 = 3/5
After you pick and eat the apple, there are 10-1 = 9 pieces of fruit left. Also, the probability of picking a peach is 4/9, as there are 4 peaches out of 9 fruit left over.
Multiply out 3/5 and 4/9 to get (3/5)*(4/9) = (3*4)/(5*9) = 12/45 = 4/15
Using a calculator, 4/15 = 0.267 approximately.
