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prisoha [69]
3 years ago
14

What is the results of adding these two equations? 6x+2y=-2 3x-2y=-5

Mathematics
1 answer:
Bess [88]3 years ago
5 0

Answer:

x=-7/9, y=4/3. (-7/9, 4/3).

Step-by-step explanation:

6x+2y=-2

3x-2y=-5

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

9x=-7

x=-7/9

6(-7/9)+2y=-2

-42/9+2y=-2

2y=-2-(-42/9)

2y=-2+42/9

2y=-18/9+42/9

2y=24/9

y=(24/9)/2

y=(24/9)(1/2)

y=24/18

y=4/3

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Identify the beginning of a sample period for the function: : f(t)=2csc(t+pi/4)-1
tamaranim1 [39]
ANSWER

- \frac{\pi}{4}

EXPLANATION

The given function is,

f(t) = 2 \csc(t + \frac{\pi}{4} ) - 1

This function has a period of
2\pi
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f(t) = \csc(t )

A sample period of this parent function is

[ 0 , 2\pi]

Which begins at zero.

For the transformed function,

f(t) = 2 \csc(t + \frac{\pi}{4} ) - 1
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The transformed function will have a sample period,

[ - \frac{\pi}{4} , \frac{7\pi}{4} ]

Therefore a sample period begins at

- \frac{\pi}{4}
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Answer

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