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rodikova [14]
2 years ago
14

Write the equation for the inverse of the function. y= cos(x - pi/2)

Mathematics
1 answer:
Mama L [17]2 years ago
4 0

Answer:

f^{-1}(x)=\cos^{-1}(x)+\pi/2

\text{or}\ f^{-1}(x)=\pi - \sin^{-1}(x)

Step-by-step explanation:

Basic definition of inverse.

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Choose the expression which represents the simplest form of (-4x2)
Lelechka [254]

Answer:

Step-by-step explanation:

No idea

7 0
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Complete the table by providing justification for each step of the proof
exis [7]
4(x² - 2) = 28

1. Distribute the 4
4x² - 8 = -28

2. Plug in 3 and -3
4(3)² - 8 = 28
4(-3)² - 8 = 28

3. Square 3 and -3
4(9) - 8 = 28
4(9) - 8 = 28

28 = 28

The reason both answers are the same is because whenever you put a negative number to an even power, the result becomes positive because any negative multiplied by a negative number is always positive.
28 = 28
5 0
3 years ago
What is the vaule of 12(3x+5x),when x=7
german
Fist plug in 7 in to the X values like so 12 (3 (7) +5 (7)) then solve in side the parenthesis 3×7 =21 and 5×7=35 then add them 35+21=56 and then you are left with 12(56) or 12×56= 672

8 0
3 years ago
0.4% of 100<br><br><br> Please help
mylen [45]
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6 0
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Read 2 more answers
Solve the simultaneous equation 2x+5y=6 and 5x-2y=9​
Ilia_Sergeevich [38]

Answer:

x = \frac{57}{29} \ , \ y = \frac{12}{29}

Step-by-step explanation:

                            2x + 5y = 6     --------( 1 )

                            5x - 2y = 9     --------( 2 )

                        _____________

     ( 1 ) x 5 =>     10x + 25y = 30   -----------( 3 )

     ( 2 ) x 2 =>    10x - 4y = 18       ----------- ( 4 )

                       ______________

    ( 3 ) - ( 4 ) =>    0 +  29y = 12

                                   y = \frac{12}{29}

Substitute y in ( 1 ) =>

                            2x + (5 \times \frac{12}{29}) = 6\\\\2x + \frac{60}{29} = 6\\\\2x = 6 - \frac{60}{29}\\\\2x = \frac{174 - 60}{29}\\\\x = \frac{114}{29 \times 2}\\\\x = \frac{57}{29}

4 0
3 years ago
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