Multiply the number of days by the amount of time you save each week.
There is no graph to find the volume
We have the <span> Trigonometric Identities : </span>secx = 1/cosx; (sinx)^2 + (cosx)^2 = 1;
Then, 1 / (1-secx) = 1 / ( 1 - 1/cosx) = 1 / [(cosx - 1)/cosx] = cosx /
(cosx - 1 ) ;
Similar, 1 / (1+secx) = cosx / (1 + cosx) ;
cosx / (cosx - 1) + cosx / (1 + cosx) = [cosx(1 + cosx) + cosx (cosx - 1)] / [ (cosx - 1)(cox + 1)] =[cosx( 1 + cosx + cosx - 1 )] / [ (cosx - 1)(cox + 1)] = 2(cosx)^2 / [(cosx)^2 - (sinx)^2] = <span> 2(cosx)^2 / (-1) = - 2(cosx)^2;
</span>
Divide the kilograms with the volume
The total number of chocolate doughnuts she bought was 10.
According to the given question.
Each box contains 4 cream filled doughnuts.
She bought 20 total cream filled doughnuts.
Number of boxes which contains 20 cream filled doughnuts
= 20/4
= 5 boxes
There are 2 chocolate flavored doughnuts in each boxes, so she bought chocolate flavored doughnuts = 5 × 2 = 10
Hence, the total number of chocolate doughnuts she bought was 10.
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