geno3141

z-score for a sample:  z  =  [ (sample mean) - (known mean) ] / [ (std. dev. / √(sample size) ]

z  =  [ 46.2 - 47 ] / [ 6.0 / √(16) ]  =  -.9428

Now find the normalcdf for a z-score this small (or smaller).

7 - 4x  =  21 + 3x

Get all the x-terms to one side by getting rid of the maller x-term:  add  4x  to both sides:

7 - 4x + 4x  =  21 + 3x + 4x

7  =  21 + 7x

Get the x-term alone on its side:  subtract 21 from both sides:

7 - 21  =  21 - 21 + 7x

-14  =  7x

Divide both terms by 7:

-2  =  x

There are various averages:

One is the mean:  this is found by adding all the numbers together and divide by the number of numbers:

                             (5 + 8 + 13 + 67 + 23) / 5   =   ?

Another is the median:  this is the middle number when they are arranged by size:

                              What is the middle number in this sequence:  5, 8, 13, 67, 23?

Another is the mode:  this is the number used most often. In this case no number is used more often than the                                       rest, so there is no mode.

One way is by comparing logs:

log(2014^2015)  =  2015·log(2014) = 6657.679...

log(2015^2014)  = 2014·log(2015) = 6654.809...

Making 2014^2015 > 2015^2014.

We need to find the area. Given three sides, we can use Heron's formula:

     Area  =  √[ s·(s - a)·(s - b)·(s - c) ]     where the semiperimeter     s = (a + b + c) / 2

     a  =  10          b = 13          c = 14

--->   s  =  (10 + 13 + 14) / 2   =   18.5

--->   Area  =  √[ 18.5·(18.5 - 10)·(18.5 - 13)·(18.5 - 14) ]   =   62.4

--->   Weight  =  62.4 x 1.7  =  106 ounces

I would suggest using the calculator at this site.

99 + 99/99

Moving from left to right, match the digits one at a time; they are tied with 29 and 29 but .9 is larger than .8

Therefore, 29.9 is larger than 29.8.

Further digits, won't change which number is larger.

29.94 is larger than 29.875.

Enter each of these in the calculator at this site, just the way you typed them here, and finish by hitting the = key.

Let x represent the number of earrings produced in a month.

Let y represent the total cost.

y  =  0.60x + 10000