HELP HELP HELP I INSERTED THE PIC !!

230 downloads

Step-by-step explanation:

==>Given:

Standard Version size (SV) = 2.5 MB

High Quality Version size (HQV) = 4.6 MB

Download ratio of SV to HQV = 1:4

Total size downloaded by both versions = 4807 MB

==>Required:

No. of standard version downloads

==>Solution:

=>Find the total size of SV version downloaded

Ratio of download: SV:HQV = 1:4

Which means for every download 2.5MB (1*2.5) of SV made, 18.4MB (4*4.6) of HQV was made

Thus, SV:HQV = 2.5MB : 18.4MB

=>Total size of SV downloaded = 2.5/(2.5+18.4) * 4807

= 2.5/20.9 * 4807 = 575.0 MB

=>No. of standard version downloads = 575.0/2.5 = 230 downloads

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation: