Complementary angles mean that the two angles, when added together, equal 90°.
Let's call the first angle x, and its second, complementary angle 2x. So, we have x + 2x = 90.
Solving for x, we get x = 30.
Since the first angle was called x, that...

Quotient rule: "low d'high - high d'low, square the denominator and away we go"
This essentially means "[ (bottom function)*(derivative of the top function) - (top function)*(derivative of the bottom function) ] / (bottom function)2
Applying the quotient...

You have to use the quadratic equation to solve this problem.
The general formula for the quadratic equation is x = {-b +- sqrt [ b2 - 4(a)(c) ]} / (2a)
Applying this formula to this problem, we get: {-(-7) +- sqrt [ (-7)2 - 4(2)(4) ]} / (2a)
From...

Maybe it's just my end, but I don't see the expression.

Hi John,
To solve this problem, first thing you'll want to do is multiply out the first set of parenthesis. So, you want to multiply (5x-2) times (x2-x3). This gives 5x3 - 5x4 - 2x2 + 2x3 = -5x4
+ 7x3 - 2x2
Now, take (-5x4 + 7x3...

This is actually pretty straight forward. Just multiply 3 all the way through.
So, we get 6x^2 + 18x + 9.

Awesome, thanks for posting an example.
So in this problem, we want to replace the x in f(x) with
h(x). That would give us f(12/x). So in the function for f(x), where there is an
x, we replace it with (12/x).
So, f(h(x)) becomes f(12/x) = (12/x)^2 +...

Hi,
Well, unless you have a specific example to work with, I may not be able to guide you to understanding how to use functions in a graph or a table. I think those are best understood with examples.
Domain is all the possible values that x can take on. Range...

Hi Theresa,
Circumference = 2*pi*r and area = pi*r*r.
So, the circumference would be 2*pi*11cm = 22pi cm.
Furthermore, the area would be pi*11cm*11cm = 121pi cm2
Hope this helps.

Hi Dalia,
To find the inverse of the function the first step is to solve for t. To do this, get
t by itself.
We get √(3t) = y - 2.
Squaring both sides, we get 3t = y2 - 4y + 4.
Dividing both sides by 3, we get t =...