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$10.00 MATH 116 1A WEEK 8

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I NEED HELP WITH MATH 116 1A, WEEK 8 QUIZ ON CHAPTER 8 AND 9
 
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$10.00 The A+ Solution with all details

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$10.00 Here are A+ grade explanations for you

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Preview: ... -7x + y = 57<br> What is the solution of the system (-7, 8)<br> <br><br> 15. solve by the elimination method<br> 0.3x – 0.2y = 4<br> 0.4x + 0.3y = 49/23<br> What is the solution system<br><br> <br><br> 21. two angles are complementary the sum of the measure of the first angle and half the secon ...

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$10.00 Please see the solution and give a rating.

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$8.00 step by step detailed solution with A++ answers("MAT 116 1A week 8")

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Preview: ... ow many ties?<br> Solution:<br>Suppose number of wins are x<br>And number of tied are =x-11<br>So according to the questions<br>2*x+1*(x-11)=64<br>2x+x-11=64<br>3x=64+11<br>3x=75<br>X=75/3<br>X=25<br>So number of wins are 25 and number of tied are 25-11 =14<br><br><br>2. -9/8x> -7/16 the solution set is {xlx[ ] [ ]}<br>Solution:-<br>Do cross multiply<br>-9x*16 ≥ -7*8<br>-144x ≥ -56<br>Divide both sides by -144<br>-144x/-144 ≤ -56/-144<br>X ≤ 7/18<br>So the solution set is {x|x ≤ 7/18}<br><br><br>3. A cellular phone company offers a contract for which the cost c, in dollars, of t minutes of telephoning is given by C= 0.25(t -600)+ 48.95 where it is assumed that > 600 minutes, what times will keep cost between $90.70 and $116.45?<br>The telephone time must be between ( )minutes and ( ) minute<br>Solution:-<br>According to the question <br>C is between $90.70 and $116.45<br>So 90.70 ≥ C ≤ 116.45<br> 90.70 ≥ 0.25(t -600)+ 48.95 ≤ 116.45<br>Subtract 48.95 each side<br>90.70-48 ...

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