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stepan [7]
3 years ago
14

There is a pair of x and y values that make each equation true in this system of equations

Mathematics
1 answer:
MAXImum [283]3 years ago
5 0

Given Equations

  • 5x+3y=8--(1)
  • 4x+7y=34--(2)

Let it has solution (x,y)

Add both

\\ \sf\longmapsto 5x+4x+3y+7y=8+34

\\ \sf\longmapsto 9x+10y=42

It will also have same solution (x,y)

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I need help with three math (algebra) problems?
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3 years ago
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Alexus [3.1K]
Well you can try rewriting it to this

answer is   d  270

first start of by factoring  and subtracting the 1 into the right side

sin(x)  ( 2 sin (x)  + 1)  = -1  

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sin( x) = -1   and   2 sin (x) +1 =  -1 

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<em>(c). </em>\frac{1}{2}<em> </em>

Step-by-step explanation:

The <u><em>cosine</em></u> is the <em>"x" coordinate</em> of the terminal point on the unit circle.

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3 years ago
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