geno3141

If you have equal amounts of each, you would end with 10%, but if you have more of one than the other, the percentage gets closer to the percentage of the larger amount.

If you have x quarts of 18% and y quarts of 2%, then use this formula: [.18x + .02y] / [x + y]

Write  -1 1/3  as a common fraction: -4/3

-4/5 x -4/3  =  16/15

A negative times a negative is positive; multiply the numerator times the numerator and the denominator times the denominator. 

2x + 9 + 3x - 1  =  x + 12

Simplify the left side:

5x + 8  =  x + 12

Get all the x-terms to one side; subtract x from both sides:

5x - x + 8  = x - x + 12

     4x + 8  =  12

           4x  =  4

             x  =  1

However, if you mean that 3/7ths of the loan was $2800, then the way to solve it is:

         (3/7)(loan) = 2800

multiply both sides times 7/3:

         (7/3)(3/7)(loan) = (7/3)(2800)

                         loan  =  7/3 x 2800

To solve:  1/2*X*X = X,

I will write it as:  1/2X² = X

To get rid of fractions, I would multiply both sides by 2:

                                            2(1/2X²) = 2(X)

which becomes:                            X² = 2X

I would subtract 2X from both sides to get all the X-terms to one side:

                                               X² - 2X = 2X - 2X

                                               X² - 2X = 0

Factor:                                   X(X - 2) = 0

So, either      X = 0      or     X - 2 = 0  --->  X = 2

What do you mean by solving it?

Do you mean:

how to graph it?

how to find a value for f(x), when you know x?

how to find the value for x that will make f(x) = 0?

how to find its inverse?

If the total tuition is $2800.00 and the loan was for 3/7 of the total tuition,

you can translate "3/7 of the total tuition" into math this way:  'of' becomes 'times' and 'the total tuition' is $2800:   3/7 x $2800.  Use the calculator to multiply 3/7 times 2800.

Or, am I completely misunderstanding you?

Isn't tau (τ) the same as 2π?

So, when you want to use τ, enter (2π).

Are you asking that: if tuition was $2800.00 and you received a loan for 3/7ths of the tuition, how much is the loan?

If so, multiply 3/7 times 2800:  (3/7) x $2800 =  the answer.

You can use the calculator at this site to obtain the answer.

The mean is calculated by adding all the individual wages and then dividing by the number of persons.

The mean can be influenced by a few very large, or very small numbers.

If you employ 8 persons, and their salaries are:

$80,000.00

$72,000.00

$20,000.00

$20,000.00

$20,000.00

$20,000.00

$20,000.00

$20,000.00

To find the mean, add them together (you will get $272,000) and you divide by the number of employees (8), you will get a mean salary of ($272,000 ÷ 8) $34,000.00; quite a bit more than wnat most of the employees earn. Two of the employees earn more than the mean wage; six earn less.