Answer:1. 152.4
2. 0.0009
3. 680
Step-by-step explanation:
Answer:
$128. Correct answer: $208. Explanation: (320) / (0.8) = 400. The couch has been marked down an additional 40% from the sale price of $320. $320 * 0.6 ... The next day, the store ran a sale of 20% off all items. What is the ... Explanation: 25% off means that the new price of the television will be 75% of the original price:.
Step-by-step explanation:
Answer:
the answer is 96
Step-by-step explanation:
hope this helps :)
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>