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Yuliya22 [10]
4 years ago
14

Evaluate: (sec²37° -cot²53°)tan21°tan69°-sin51°cos49°-cos51°sin49°

Mathematics
1 answer:
olchik [2.2K]4 years ago
8 0
= 1 * 1 - (sin (51 + 49)

= 1 - 0.9848 
= 0.0152  answer
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You just multiply 6.4 by how many hours, and that’s your answer. So it’s 12.8 miles in 2 hours
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3 years ago
Evaluate the difference quotient?
goldenfox [79]
F(x) = x^2 + 4x - 5

[f(a + h) - f(a)] / h

f(a) = a^2 + 4a - 5
f(a + h) = (a + h)^2 +4(a + h) - 5
             = a^2 + 2ah + h^2 + 4a + 4h - 5

f(a + h) - f(a) = a^2 + 2ah + h^2 + 4a + 4h - 5 - ( a^2 + 4a - 5)
----------------      ------------------------------------------------------------
       h                                              h

                       =  2ah + h^2 + 4h            h (2a + h + 4)          2a + h + 4
                           -------------------        =  -------------------    =
                                       h                              h
3 0
4 years ago
4y + 3q - 5q^3<br><br> PLS ANSWER ASAP
Ilya [14]

Answer:

4y+q(3-5q^2)

Step-by-step explanation:

common taking from 3q-5q^3

6 0
3 years ago
The sum of the angle measures of a triangle is 180°. Find the value of x . Then find the angle measures of the triangle.
Lady bird [3.3K]

Answer:

Step-by-step explanation:

The sum of the angle measures of a triangle is 180°. Find the value of x . Then find the angle measures of the triangle.

find the value of x

x + 2x + x + 8 = 180

4x = 180 - 8

4x = 172

x = 172 : 4

x = 43

find angles

2x = 43 * 2

2x = 86°

-------

x = 43°

--------

x + 8 = 43 + 8

x = 51°

-----------------------

check

86 + 43 + 51 = 180°

the answer is good

6 0
2 years ago
Tommy went to the store to buy 13 bricks. If he left at 11:00 am and the store is 15 minutes away, what time will Tommy get back
Anon25 [30]

Answer:

11:30

Step-by-step explanation:

The store is 15 mins away, so 30 mins is the round trip.

Have a nice one.

4 0
3 years ago
Read 2 more answers
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