kitty<3

This problem states that log base 10 (x) equals 0.55, so take the corresponding exponential equation.

For example:

$${{log}}_{{\mathtt{2}}}{\left({\mathtt{8}}\right)} = {\mathtt{3}}$$

$${{\mathtt{2}}}^{{\mathtt{3}}} = {\mathtt{8}}$$

So since the problem's equation is:

$${{log}}_{{\mathtt{10}}}{\left({\mathtt{x}}\right)} = {\mathtt{0.55}}$$

Then:

$${{\mathtt{10}}}^{{\mathtt{0.55}}} = {\mathtt{x}}$$

x = $${{\mathtt{10}}}^{{\mathtt{0.55}}} = {\mathtt{3.548\: \!133\: \!892\: \!335\: \!754\: \!6}}$$

Puedes hacer las cuentas; tienes una pregunta específica?

You can solve this problem one step at a time:)

One elephant eats 500 lbs of food, so 2 elephants would eat (2*500) lbs, which is 1000 lbs of food.

That is how much 2 elephants eat each day, and there are 7 days in a week.

So the pounds of food for 2 elephants in a week would be (1000*7) lbs

= 7,000 lbs of food

*to feed the two elephants at the zoo, not "all the elephants" in the world*

Complementary angles are two angles whose degree measurements add up to 90 degrees. The first angle would be (x + 14.4) and its complementary angle would be x.

Therefore, you would set up this problem as:

x + (x + 14.4) = 90

2x + 14.4 = 90

2x = 75.6

x = 37.8  (one angle)

And (x + 14.4) = 52.2 (other angle).

To check: $${\mathtt{37.8}}{\mathtt{\,\small\textbf+\,}}{\mathtt{52.2}} = {\mathtt{90}}$$

Well, this site does have a really good calculator:) http://web2.0calc.com/

Enter: -4/5 + 3/20

$${\mathtt{\,-\,}}{\frac{{\mathtt{4}}}{{\mathtt{5}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{3}}}{{\mathtt{20}}}} = {\mathtt{\,-\,}}{\frac{{\mathtt{13}}}{{\mathtt{20}}}} = -{\mathtt{0.65}}$$

And if you prefer to do the problem by hand:

Convert (-4/5) into a fraction over 20 by multiplying it by (4/4)

= -16/20

Then add 3/20 to -16/20:

= -13/20

First, you would need to find the slope of the line. 

Use the formula  $${\mathtt{m}} = {\frac{\left({\mathtt{x1}}{\mathtt{\,-\,}}{\mathtt{x2}}\right)}{\left({\mathtt{y1}}{\mathtt{\,-\,}}{\mathtt{y2}}\right)}}$$

Plug in the points: 

$${\mathtt{m}} = {\frac{\left({\mathtt{6}}{\mathtt{\,-\,}}{\mathtt{3}}\right)}{\left({\mathtt{5}}{\mathtt{\,-\,}}{\mathtt{4}}\right)}}$$

m=3

Now use the slope and a point to write the equation in point-slope form:

$$\left({\mathtt{y}}{\mathtt{\,-\,}}{\mathtt{y1}}\right) = {m}{\left({\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{x1}}\right)}$$

$${\mathtt{y}}{\mathtt{\,-\,}}{\mathtt{3}} = {\mathtt{3}}{\mathtt{\,\times\,}}\left({\mathtt{x}}{\mathtt{\,-\,}}{\mathtt{4}}\right)$$

Simplify it:

y= 3x-12+3

y= 3x-9

Prom is traditionally in your junior year, 11th grade. Calculate 11 - 5 years:)

Expanding on Dragonslayer's answer, yes, it is possible to have a negative square root, such as $${\mathtt{\,-\,}}{\sqrt{{\mathtt{4}}}} = -{\mathtt{2}}$$

However, the square root of a negative number does not exist in the real number system, so there is this term called $${i}$$  to express $${\sqrt{-{\mathtt{1}}}}$$. Square roots of negative numbers are expressed in terms of $${i}$$ 

The Associative Property, also called the "grouping property," works for addition and multiplication expressions. It states that the order you group terms in an equation does not affect the answer. For example:

For addition:

$${\mathtt{a}}{\mathtt{\,\small\textbf+\,}}\left({\mathtt{b}}{\mathtt{\,\small\textbf+\,}}{\mathtt{c}}\right) = \left({\mathtt{a}}{\mathtt{\,\small\textbf+\,}}{\mathtt{b}}\right){\mathtt{\,\small\textbf+\,}}{\mathtt{c}}$$

Or:   $${\mathtt{2}}{\mathtt{\,\small\textbf+\,}}\left({\mathtt{3}}{\mathtt{\,\small\textbf+\,}}{\mathtt{4}}\right) = \left({\mathtt{2}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}}\right){\mathtt{\,\small\textbf+\,}}{\mathtt{4}}$$

In multiplication:

$${a}{\left({\mathtt{bc}}\right)} = {\mathtt{ab}}{\mathtt{\,\times\,}}{\mathtt{c}}$$

Or:  $${\mathtt{2}}{\mathtt{\,\times\,}}\left({\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{4}}\right) = \left({\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{3}}\right){\mathtt{\,\times\,}}{\mathtt{4}}$$

An expression.

If it were an equation, you could solve for x.

4x+x^2 can also be written as:

x^2+4x

or factored as:  

x(x+4)