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2 years ago

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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What is the total surface area of the square pyramid?

harkovskaia [24]

Answer:

Step-by-step explanation:

$A_1 = a^2 = 14^2 = 196$

$A_2 = 4(\frac{b * h}{2}) = 4(\frac{14 * 12}{2}) = 4(\frac{168}{2}) = 4 * 84 = 336$

$SA = A_1 + A_2 = 196 + 336 = 532\ cm^2$

5 0

3 years ago

Simplify the expressions. i32 = i25 = i86 = i51 =

maw [93]

Simplify the expression using the definition of an imaginary number i = sqrt -1

i32 = 1

i25 = i

i86 = -1

i51 = -i

3 0

2 years ago

How to factor 25x^2 - 81= 0

dalvyx [7]

Your question is a difference of squares. both terms that need to be factored are squared. to solve take the square root of each put into two terms one of addition and one of subtraction.

anwser= (5x-9)(5x+9)

the reason this works is because when you foil you get
25x²-45x+45x-81
the middle terms cancel revealing
25x²-81

4 0

2 years ago

Will give brainliest give the answer and steps

Inessa05 [86]

What variable??????????

8 0

2 years ago

I need help to these questions. Convert these fractions to a decimal 7/8 , 4 3/8. Thanks

ehidna [41]

Simple...

you have: $\frac{7}{8}$ and $4 \frac{3}{8}$

Now, the first one is easy just divide it...

$\frac{7}{8} =0.875$

Now....

$4 \frac{3}{8}$ needs to be converted...

Multiply the whole number*denominator...

4*8=32

Now add the numerator....

32+3=35

Now use the original denominator...

$\frac{35}{8}$

Now divide...

$\frac{35}{8}=4.375
$

Thus, your answer.

7 0

2 years ago

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