course Mth 158
* 1.1.20 (was 1.1.12). Explain, step by step, how you solved the equation 5y + 6 = -18 - y
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Your solution:
I added y then subtracted 6 to get 6y=-24 then divided by 6 to get y=-4
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Question:
1.1.38 \ 44 (was 1.1.30). Explain, step by step, how you solved the equation (2x+1) / 3 + 16 = 3x
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Your solution:
\first I subtracted 16 then I multiplied each side by 3. 2x+1=9x-48 I added 48 and then I subtracted 2x to get 49=7x then divided by 7 to get 7=x
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Question:
* was 1.1.44 \ 36. Explain, step by step, how you solved the equation (x+2)(x-3) = (x+3)^2
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Your solution:
I used foil on (x+2)(x-3) and got x^2-x-6=x^2+6x+9 then I subtracted a x^2-+x and subtracted 9 from each side to get -15=7xthen I divided by7 to get x=-15\7
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Question:
* 1.1.58 (was 1.1.54). Explain, step by step, how you solved the equation (8w + 5) / (10w - 7) = (4w - 3) / (5w + 7)
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Your solution:
I cross multiplied to get 40w^2+81w+35=40w^2-58w+21. I subtracted 40w^2 and 58w to get 139w+35=21. I subtracted 35 and divided by 39 to get w=-14/139
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Question:
* 1.1.70 (was 1.1.78). Explain, step by step, how you solved the equation 1 - a x = b, a <> 0.
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Your solution:
I subtracted 1 and divided by a to get x=(1-b)/a
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Question:
* 1.1.82 (was 1.1.90). Explain, step by step, how you solved the equation v = -g t + v0 for t.
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Your solution:
I subtracted v sub 0and divided by –g to get (v-v sub 0)/-g
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You're obviously doing the right stuff. I can't critique or comment further unless you complete the self-critique process (see my notes on previous submissions). However I see no reason for concern regarding your progress and from what I see here I expect that you will perform well on tests.