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Delicious77 [7]
3 years ago
13

Simplify: sec x – sec x (sin x)2

Mathematics
2 answers:
givi [52]3 years ago
5 0

Answer:

Sec (x) - 2 tan (x)

Step-by-step explanation:

CaHeK987 [17]3 years ago
5 0

Answer:

Cos x

Step-by-step explanation:

HINT:

1 -   Sin² x = Cos² x

Sec x = \frac{1}{Cos x}

Sec x - Sec x*(Sin x)² = Sec x (1 - Sin² x)

                                  = Sec x * Cos²x

                                  = \frac{1}{Cos x}*Cos^{2} x

                                  = Cos x

                               

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bekas [8.4K]
The answer to this question is D
4 0
3 years ago
A customer buys a different book that has an original selling price of $38. The book is discounted 25%. The customer must pay a
Marina CMI [18]

Answer:

$30.21

Step-by-step explanation:

100% -25%= 75%

Discounted price of the book

= 75% ×$38

= $28.50

Since the customer must pay an additional 6% of the discounted price,

percentage of discounted price paid

= 100% +6%

= 106%

Total amount paid

= 106% × $28.50

= $30.21

_________________________________

Alternative working:

Original selling price= $38

Since the book is discounted 25%,

100% ----- $38

1% ----- $0.38

75% ----- 75 ×$0.38= $28.50

Since the sales tax is based on the discounted price, we let the discounted price be 100%.

100% ----- $28.50

1% ----- $0.285

106% ----- 106 ×$0.285= $30.21

∴ The total amount the customer pays for the discounted book is $30.21.

7 0
3 years ago
Suppose you are starting your own company selling chocolate covered strawberries. You decide to sell the milk chocolate covered
lidiya [134]

Answer:

Step-by-step explanation:

Let x_m and x_w be the production level of milk and white chocolate-covered strawberries respectively. According to the given data, we know the total profit will be

P(x_m,x_w)=$2.25x_m+$2.50x_w

The restrictions can be written as

x_m+x_w \leq  800

x_w\leq x_m/2

x_w\leq 200

All the restrictions can be plotted in the same graph to find the feasible region where all of them are met. The graph is shown in the image below

The optimal solution will be the level of production such that

* All restrictions are met

* The total profit is maximum

The optimal level of production can be found in (at least) one of the vertices of the feasible region. We'll try each one as follows

P(0,0)=0

P(400,200)=$2.25 (400)+$2.50 (200) = $1400

P(600,200)=$2.25 (600)+$2.50 (200) = $1850

P(800,0)=$2.25 (800)+$2.50 (0) = $1800

We must produce 600 milk chocolate-covered strawberries and 200 white chocolate-covered strawberries to have a maximum profit of $1850/month

4 0
3 years ago
Select three ratios that are equivalent to<br> 4:3<br><br> Choose 3 answers:
VARVARA [1.3K]

Answer: 8:6, 12:9, and 16:12

6 0
3 years ago
Read 2 more answers
Please show your work please
Nadusha1986 [10]
The correct answer is 4. 
5 0
4 years ago
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