The correct answer is the first option, which is:
5(x+3)(x-3)
The explanation is shown below:
1. To solve the problem shown in the figure attached, and factor the given equation, you must apply the following proccedure:
1.You have the following equation given in the problem: 5x^2-45. As you can see, it is a quadratic equation.
2. When you factor it, you obtain:
5(x^2-9)
5(x+3)(x-3)
3. Therefore, the answer is the optiones mentioned before.
Seven twenty-two am
7:22am
The greatest common factor is 3
Assuming you're concerned with interest rate problems, r is generally involved in something like the formula ...
... i = prt
So, r will have the units of ...
... r = i/(pt) = (dollars)/(dollars·year) = 1/year
That is, r is <em>(some fraction) per year</em>.
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Often, the fraction is expressed as a percentage. The fraction will be unitless (as percentages are), leaving the units of r as year⁻¹.