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>
Answer:
C is correct
Step-by-step explanation:
Answer:
16.4
Step-by-step explanation:
How many times does 5 go into 8? One time, subtract 8-5 which is three. Bring down the two which gives you 32. How many times does 5 go into 32? 6. Bring down a zero again. Keep bringing down zeroes. Usually don't go beyond three decimal points.
Using a geometric sequence, the number of emails sent on day 7 is given as follows:
A. 93,312.
<h3>What is a geometric sequence?</h3>
A geometric sequence is a sequence in which the result of the division of consecutive terms is always the same, called common ratio q.
The nth term of a geometric sequence is given by:
In which 
is the first term.
This situation can be modeled by a geometric sequence with first term and common ratio given as follows:
Hence the number of people that receive the email on day n is:
On day 7, the amount is:
Hence option A is correct.
More can be learned about geometric sequences at brainly.com/question/11847927
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$0.59/pound is that constant of proportionality.
PricePaid = k * x, where k is the constant of proportionality and x is the number of pounds of bananas purchased.
Then PricePaid = ($0.59/pound)x is the formula. It's a case of direct proportion.
