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3 years ago

Write the equation for the inverse of y = cos 2x

Mathematics

1 answer:

AlladinOne [14]3 years ago

3 0

Answer:

Inverse = (arcos x) / 2.

Step-by-step explanation:

y = cos 2x

2x= arcos y

x = (arcos y) / 2.

Inverse = (arcos x) / 2.

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Given an arithmetic sequence with a7=19 and a12=54 find a15

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3 years ago

Which expressions are equivilant to 6^16?

belka [17]

The expressions which are equivalent to 6¹⁶ are

$(6^{8}) ^{2}$

$(6^{-2}) ^{\times -8}$

and $(6^{-4}) ^{\times -4}$

<h3>Equivalent expressions </h3>

From the question, we are to determine which of the given expressions are equivalent to 6¹⁶

From one of the laws of indices, we have that

$x^{y\times z} = (x^{y})^{z}$

The given expression, 6¹⁶, can be expressed as

$6^{8\times 2}$

$6^{-2\times -8}$

$6^{-4\times -4}$

Then,

$6^{8\times 2}= (6^{8}) ^{2}$

$6^{-2\times -8}= (6^{-2}) ^{\times -8}$

$6^{-4\times -4}= (6^{-4}) ^{\times -4}$

Hence, the expressions which are equivalent to 6¹⁶ are

$(6^{8}) ^{2}$

$(6^{-2}) ^{\times -8}$

and $(6^{-4}) ^{\times -4}$

Learn more on Equivalent expressions here: brainly.com/question/21643960

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4 0

2 years ago

Could I have help will all these questions

Vesnalui [34]

I hope this helps you

1)

a=360/30

a=12

2) parallelogram

3)

3x+10+x+148+117+90=450

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3 years ago

( − 9 , 7 ),(−6,−3)

lina2011 [118]

Answer: If you wanting to find the slope, the answer would be m = -10/3

Step-by-step explanation: Use the slope formula to find the slope m.

Hope this helps you out! ☺

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4 years ago

Solve: s = 4 + √ s + 2<br><br> a. s=2<br> b. s=7<br> c. s=2 or s=7<br> d. no real solution

lyudmila [28]

Rewrite s = 4 + sqrt(s+2) as s-4 = sqrt(s+2)

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combine like terms: s^2 - 9s + 14 = 0

Factor this: (s-7)(s-2)=0

Solve for s: s={7, 2}

4 0

4 years ago

Read 2 more answers