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IgorLugansk [536]
4 years ago
15

Verify the identity algebraically. 7 sec(y) cos(y) = 7

Mathematics
1 answer:
Temka [501]4 years ago
7 0

Answer:

7 sec(y) cos(y) = 7

Use identity sec(y) = 1/cos(y).

7 * 1/cos(y) * cos(y) = 7

7 * 1 = 7

7 = 7

You might be interested in
What is the sale price rounded to the nearest dollar?
AlekseyPX

Answer:

317

Step-by-step explanation:

1st markdown

original price:440

Markdown percent  20%

The new price = original price - original price* markdown percent

                         = 440 * 440*20%

Changing the percent to a decimal

                        = 440 * 440*.20

                        = 440-88

                         =352

New selling price = 352

2nd markdown

original price:352

Markdown percent  10%

The new price = original price - original price* markdown percent

                         = 352 * 352*10%

Changing the percent to a decimal

                        = 352 * 352*.10

                        = 352-35.20

                         =316.80

New selling price = 316.80

Rounding to the nearest dollar 317

7 0
3 years ago
Lacey and Rick have signed a contract to purchase a home. The closing date is June 27, and the buyer owns the property on the da
Tanya [424]

Answer:

Lacey and Rick will owe $ 7662.88  in prorated expenses

Step-by-step explanation:

The number of days till june 27 us

Jan 31 +  Feb 28   + March 31  + April 30  +  May 31  + June 26 =177 days

In a year we have 365 days

The owner has paid tax for 177 days

Now  Lacey and Rick have to pay tax for  =365 -177 days  = 188 days

Now  for one day tax amount will be

=\frac{14,878.15}{365}

= 40.76

Now the tax amount for 188 days is

= 40.76 \times 188

= 7662.88

5 0
3 years ago
What is the MEAN of the following data set?<br><br> 31, 27, 19, 18, 22, 21, 25, 29, 34, 30
azamat

Step-by-step explanation:

31+27+19+18+22+21+25+29+34+30 divided by 10

3 0
2 years ago
The zeros of a function are x=2 and x=-7. What are its x intercepts and factors?
torisob [31]

the zeros and the x-intercepts are the same with different names

x -intercepts are (- 7, 0 ) and (2, 0 )

if x = a is a zero then (x - a ) is a factor

thus (x + 7 ) and (x - 2 ) are the factors


7 0
4 years ago
Read 2 more answers
What is the measure of the third angle in the similar triangles below?
WARRIOR [948]

Answer:

65

Step-by-step explanation:

We know that,

The Sum of all angles of the triangle is 180°.

As given in the question,

Triangle PQR is similar to Triangle WXY

Therefore ,

Let the third angle be 'x'.

35° + 80° + x = 180°

115 + x = 180°

x = 180° - 115°

x = 65°.

Hence, 65° is the appropriate answer to the question.

I hope my answer helped!!

7 0
4 years ago
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