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Its the power you need to raise 10 to to get the number. 

For example, Log10 of 100 is 2. That means you have to raise 10 to the power of 2 (in other words, square it) to get 100. 

Or the Log10 of 1000 is 3. So you have to raise 10 to the power of 3 (cube it) to get 1000. 

and the Log10 of 10 is 1. 

Obviously, the Log10 of most other numbers are not so tidy. 

So, your turn. What's the Log10 of a million? - that's it, 6 

• You must determine how many grams are in a tonne. You then must then use the 
  • molecular weight of carbon to determine the moles of carbon in that many grams
    • (i.e. (grams C)/(M.W. of C)). As there is one mole of Carbon in each mole of
      • carbon dioxide, then multiply the resulting moles of carbon by the molecular
        • weight of CO2 and you will have your answer. OR... One metric ton (tonne) of
          • of carbon is equivalent to approximately 3.66 metric tons of carbon dioxide

Find the inverse sine of 1/2.  Then find the cosine of that number

V = 4/3(pi)r^3 , r = 3/2 = 1.5
V = (4/3)(3.14)(1.5^3)
= 14.10
Now divide by 2 for 1/2 of the ball. 
V/2 = 14.10 = 7.05 
AWNSER IS  7.05 in^3

you dont have enough information

Multiply the price x (1 + sales tax rate expressed as a decimal)

For example.......something with price of $100 and an 8% sales tax =

$100 (1 + .08)   = $100(1.08) = $108

you cant figure it uot you dont have enough data (take that teachers)

√12 = √(4*3) = √4 * √3  =  2√3

A pendulum swings through an angle of 1.8 radians. The distance it travels is 32 inches. How long is the pendulum

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Using  s = rθ, we have

32inches = r (1.8)

r = [32 inches / 1.8]  ≈ 17.78 inches 

enneadca is a 19 sided polygon

4/5*6/7=(4*6)/(5*7)=24/35

A negative exponent just means that the base is on the wrong side of the fraction line, so you need to flip the base to the other side. For instance, "x^–2" (ecks to the minus two) just means "x², but underneath, as in 1/(x²)".

• Write x^–4 using only positive exponents.

• Write x² / x^–3 using only positive exponents.

• Write 2x^–1 using only positive exponents.

Note that the "2" above does not move with the variable; the exponent is only on the "x".

• Write (3x)^–2 using only positive exponents.

Unlike the previous exercise, the parentheses meant that the negative power did indeed apply to the three as well as the variable.

my notes from math class

for real

that is not a math question

Correct, but you might ask for a discount if you're buying eleven !

Sorry, but that last answer is simply not correct. If you take the square root of a decimal quantity, (less than 1), the result is a larger decimal.

For example,

$$0.5^{2}=0.25, \text{ so } \sqrt{0.25}=0.5.$$

Yes. You will just get a smaller decimal

Well, this is my working out;

5 choc ices = 340 pence

1 choc ice = 68 pence

11 choc ices = 88 x 11 = 748 pence

So the answer is 748 pence

Do you mean y(x) = √(25x-75) + 3.  If so here is a part of its graph:

It goes off to infinity to the right, but doesn't go further left than x = 3 because the term under the square root sign would be negative there. 

I don't know what is meant by "make it easy to graph using a translation".

82.5 because 80 plus 85 equals 165 and 165 divided by 2 equals 82.5

The function g/f is (x-2)/(3x-6).  This is valid for all real numbers except x = 2, because when x =  2 we have (x-2)/(3x-6) = 0/0, which is undefined.  So the domain is all numbers except x = 2.

GOOGLE IT!

We start by giving a label, say x, to the sister's age (you can think of x as a label on a box inside which is the number representing her age).  We have to use the information we are given in order to calculate x (the number in the box).

We are told that the age of Carlos is 2*x + 5 and that this equals 13, so the equation is

2*x + 5 = 13.

Subtract 5 from both sides of this equation

2*x = 8

Divide both sides by 2

x = 4

So his sister is 4 (this is the number in the box labelled x) 

the anawer is 1.2e41