This is what I found
Step-by-step explanation: <em>If you look at the figure, the angle marked red is equal to 70° because vertical angles are equal. So, that also means that the opposite angle 2 is also 70°. So, the first equation is:</em>
<em />
<em>70 = 5x + y</em>
<em />
<em>Next, the green angle as marked is equal to</em>
<em>Green angle = 180 - 70 = 110</em>
<em>Being vertical angles, angle 1 is then equal to 110°. So,the second equation is</em>
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<em>110 = 5x + 3y</em>
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<em>Subtract the two equations:</em>
<em />
<em> 5x + y = 70</em>
<em> - 5x + 3y = 110</em>
<em>________________</em>
<em> -3y = -40</em>
<em> y = -40/-3 = 13.33°</em>
<em />
<em>Substituting y to either one of the equations,</em>
<em>5x + 13.33 = 70</em>
<em>Solving for x,
</em>
<em>x = 11.33°</em>
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The formula for an arithmetic sequence is An=A1+(n-1)d.
Using this knowledge, you can set up the equation easily to be An=1+(12-1)-5
You then simplify this to 1-55 using PEMDAS, giving you the answer for the twelfth term being -54, you then do this for every term if you want (or you could just subtract 5 by the terms after 14 till you get to -54. After all that, you add the twelve terms up to get -319 as your final answer
Answer:
No solution
Step-by-step explanation:
we have
Apply distributive property left side
subtract 2x both sides
------> is not true
therefore
The system has no solution (two parallel lines)
Answer:3 and 3/4 :)
Step-by-step explanation: 15/4= 3 R 3 3 and 3/4
