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Veronika [31]
3 years ago
13

Please please please please help i need to pass please

Mathematics
1 answer:
labwork [276]3 years ago
4 0

Answer:

D

Step-by-step explanation:

Solution:-

The standard sinusoidal waveform defined over the domain [ 0 , 2π ] is given as:

                                   f ( x ) = sin ( w*x ± k ) ± b

Where,

                 w: The frequency of the cycle

                 k: The phase difference

                 b: The vertical shift of center line from origin

We are given that the function completes 2 cycles over the domain of [ 0 , 2π ]. The number of cycles of a sinusoidal wave is given by the frequency parameter ( w ).

We will plug in w = 2. No information is given regarding the phase difference ( k ) and the position of waveform from the origin. So we can set these parameters to zero. k = b = 0.

The resulting sinusoidal waveform can be expressed as:

                           f ( x ) = sin ( 2x )  ... Answer

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ACDF is a trapezoid and
Sholpan [36]

Answer:

x = 7

Step-by-step explanation:

See the attached figure.

As shown: A C D F is a trapezoid and BE is a mid-segment.

The mid-segment of the trapezoid is the average of its bases.

BE = 0.5 ( A F + C D)

Given: CD = 18 , BE = 2x + 10   and   A F = 6x - 12

So,

2x + 10 = 0.5 ( 18 + 6x - 12)

Solve for x

2x + 10 = 0.5 (6 + 6x)

2x + 10 = 3 + 3x

10 - 3 = 3x - 2x

∴ x = 7

<u>So, the value of x is 7</u>

8 0
3 years ago
Joan went to the bookstore. At
kiruha [24]

Answer:

\frac{1}{4} of the books in the book store are mystery fiction books.

Step-by-step explanation:

Let x represent all the books in the books store.

Then, the fraction of books that are fiction books is \frac{3}{4}x

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The fraction of the books at the  bookstore that are mystery fiction  books is \frac{1}{3}\times \frac{3}{4}x=\frac{1}{4}x.

Therefore \frac{1}{4} of the books in the bookstore are mystery fiction books.

8 0
3 years ago
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3(x+5)=9 what is the value off x
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Answer:

x = -2

Step-by-step explanation:

4 0
2 years ago
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A town doubles it’s size every 35 years if the population is currently 5,00, what will be the population be in 140 years?
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Answer:

8,000

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after 35 years 1000

after 70 2000

after 105 4000

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i might be wrong but hope this helped there is probs a faster way to do this tho.

5 0
3 years ago
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