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Naddika [18.5K]
3 years ago
8

Please HELP ME!!! Write an equation and solve it the answer choices are down below thank you!!!

Mathematics
1 answer:
sesenic [268]3 years ago
4 0
I do not understand why you or your teacher have written down a certain number of minutes by each equation, but I will do my best to answer your question. I hope that I’m able to help.

1,2) 20 + 3.5x = 30 + 2.75x
-20 -20
3.5x = 30 + 2.75x - 20
-2.75x -2.75x
0.75x = 10
/0.75 /0.75
x = 13.333...

3,4) 3.5x + 2.75x = 20 + 30
6.25x = 50
/6.25. /6.25
x = 8


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Given this function: f ( x )=−2cos(4 πx ) Find the following:
Neporo4naja [7]

Answer:

Period =½

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Minimum=-2

Step-by-step explanation:

The given function is

f(x) =  - 2 \cos(4 \pi \: x)

The period is given by:

\frac{2\pi}{b}  =   \frac{2\pi}{4\pi} =  \frac{1}{2}

The equation of the midline is y=0 since there is no vertical shift

The amplitude of this function is 2 so the range is -2≤y≤2.

Hence the maximum value is 2 and minimum value is -2

4 0
4 years ago
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8_murik_8 [283]

Answer:

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Step-by-step explanation:

For acute angles, the sine of an angle is the cosine of its complement, and vice versa.

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  sin(θ) = cos(90° -θ) . . . . relation between sine and cosine

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2 years ago
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