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Nataliya [291]
3 years ago
9

What is the frequency of the function f(x)?

Mathematics
1 answer:
Alex73 [517]3 years ago
8 0

Answer:

  frequency = 1/(2π)

Step-by-step explanation:

The frequency of the function is found by comparing the argument of the cosine function to (2πfx), where f is the freuqency.

  2πfx = x . . . . the argument of the cosine is x in f(x)=2cos(x) -4

  2πf = 1 . . . . . . divide by x

  f = 1/(2π) . . . . . the frequency of the function f(x)

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In a basketball game, a regular basket was worth 2 points and a long-distance basket was worth 3 points. If there were 45 basket
-BARSIC- [3]

Answer:

B. r + l = 45; 2r + 3l = 96

39 regular; 6 long-distance

Step-by-step explanation:

There were 45 baskets, so

(1) r + l = 45

There were 96 points in the game, so

(2) 2r + 3l = 96

Solve equation (1) for l

                    l = 45 – r     Substitute the value for l in Equation (2)

2r + 3(45 – r) = 96      Remove parentheses

 2r + 135 - 3r = 96      Combine like terms

         -r + 135 = 96      Subtract 135 from each side

                  -r = -39      Multiply each side by -1

                  r = 39      Substitute the value of r in Equation (1)

           39 + l = 45        Subtract 39 from each side

                   l = 6

===============

Check:

(1) 39 + 6 = 45

         45 = 45

(2) 2×39 + 3×6 = 96

           78 + 18 = 96

                   96 = 96


4 0
4 years ago
A.3/4<br> B.4/3<br> C.-4/3<br> D.-3/4<br> I need help so bad pls
Pavlova-9 [17]
I’m pretty sure that it is b
3 0
3 years ago
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Worth 10pts!!! Can someone help?
gulaghasi [49]

Answer:

-4

Step-by-step explanation:

The average rate of change of the interval [a,b] is (f(b)−f(a)) / (b−a)

Replacing a=−5, b=4, f(x)=−x^2−5x+12.

 (f(b)−f(a))/(b−a) =12−5x4− 4^2 − (12−5 x(−5)−(−5)^2)/ (4−(−5))= −4.

3 0
3 years ago
Please help will give brainliest
almond37 [142]

Step-by-step explanation:

\frac{32.5}{33.8}  = 0.9615

5 0
3 years ago
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Need any help with this that you guys can give. thank you
lesya [120]
I'll do number 11 for you 

Area of a sector can be found using 
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A =  \pi  (6^{2} )( \frac{75}{360} )
A ≈ 23.56 m²

Oh, I guess rounded to the nearest tenth is 23.6
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3 years ago
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