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Dahasolnce [82]
3 years ago
15

PLEASE HELP IF MORE THAN ONE PERSON ANSWERS ILL GIVE BRAINLIEST!!!

Mathematics
1 answer:
lina2011 [118]3 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

The area of the shaded portion is the area of the outer circle subtract the area of the inner circle

area of larger circle = πr² ← r is the radius = 11

area = π × 11² = 121π

area of smaller circle = πr² ← r = 9

area = π × 9² = 81π

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

shaded area = 121π - 81π = 40π m² ≈ 126 m²

   

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Determine the values of x when f(x)=40 for the function f(x)=2(x-3)^2-8
SpyIntel [72]

Answer:

x = 3 ± \sqrt{24}

or

x = 3 + \sqrt{24}, x = 3 - \sqrt{24}

Step-by-step explanation:

given f(x) = 2(x - 3)^2 - 8, find when f(x) = 40

So, we plug in 40 for f(x) in the 1st equation and solve for x.  (Aim to got x on its own)

40 = 2 (x - 3)^2 - 8

+ 8          + 8

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

48 = 2 (x - 3)^2

/2            /2

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

24 = (x - 3)^2

square root both sides

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

\sqrt{24} = x - 3

x = 3 ± \sqrt{24}

5 0
3 years ago
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jek_recluse [69]

Answer:

The answer is c.

Step-by-step explanation:

12*12 = 144 so It would be 12

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3 0
3 years ago
Read 2 more answers
A fraction reduces to 36. If its denominator is 6x5, what is its numerator?
olchik [2.2K]
If you would like to find the numerator of a fraction, you can do this using the following steps:

denominator ... 6 * 5 = 30
numerator ... x = ?

36 = numerator / denominator
36 = x / 30
x = 36 * 30
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The correct result would be 1080.
4 0
3 years ago
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chubhunter [2.5K]

Answer:

The answer is A. 3x + 3

Step-by-step explanation:

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A swimming pool is open for 7 1/2 hours during the day the pool keeps one lifeguard shift is 1 1/16 hours long how many shifts a
mariarad [96]

Answer:

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Step-by-step explanation:

That would be 7 1/2 divided by 1 1/16

=  15/2 / 17/16

= 15/2 * 16/17

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=  120/17

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6 0
3 years ago
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