hectictar

There actually is a reason for existing.

So the figure is a tetrahedron?

surface area = (1/2)(perimeter of base)(slant height) + (area of the base)

surface area = (1/2)(1.2)(0.75) + 0.07

surface area = 0.45 + 0.07

surface area = 0.52 square feet

32 + 32 + 32 + 32 = 128

\(x + \frac{1}{x} = 2 \\ x + \frac{1}{x} - 2 = 0 \\ \frac{x^2}{x} + \frac{1}{x} - \frac{2x}{x} = 0 \\ \frac{x^2+1-2x}{x} = 0\)

We want to know what makes the numerator = 0.

You can also just say multiply both sides by x.

\(x^2+1-2x = 0 \\ (x-1)(x-1) = 0 \\ x = 1\)

(You can easily test this and see that 1 + 1/1 = 2)

So

\(1^2 + \frac{1}{1^2} = 1 + 1 = 2\)

52% = 52/100 = 0.52

I guess 2 years of spanish class paid off haha 

I think I know what is happening.

\(\frac{5\sqrt{5}}{5\sqrt{5}} = 1\)

BUT

\(5 \times \frac{\sqrt{5}}{5} \times \sqrt{5} = 5\)

If you do not put parenthesees around the denominator, the calculator only thinks that the number immediately after the "/ "  goes in the denominator.

You need to enter it into the calculator like this:

[5sqrt(5)]/[5sqrt(5)]

f(a) = g(a)

So

a + 2 = 2(a) - 1

Add 1 to both sides.

a + 3 = 2a

Subtract a from both sides.

3 = a

\(\sqrt{-1} = i\)

p/6 = 9

The question is, "What number, when divided by 6, equals 9?"

To find out, multiply both sides of the equation by 6.

(p/6)*6 = 9*6

p = 54

So 54/6 = 9, which it does.