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MATH HELP JUST A COUPLE OF QUESTIONS...?

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  • MATH HELP JUST A COUPLE OF QUESTIONS...?


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Answer #1 | 30/12 2013 07:08
COUPLE means 2.
Positive: 71.428571428571 %
Answer #2 | 30/12 2013 07:58
1. -8 2. -28 3. -9 4. 5/2 5. no question 6. 9 or -9 7. -3 8. 3 9. no solution 10 and 11 no clue 12. y = 2x - z/2
Positive: 60 %
Answer #3 | 30/12 2013 12:30
Here is a step by step solution for the first one: http://www.symbolab.com/solver/equation-calculator/z%20%2B%2017%20%3D%209%20 You can easily do the rest using that website. Hope it helps
Positive: 60 %
Answer #4 | 30/12 2013 07:31
1 =z + 17 = 9 =z=9-17=-8 2 =52 – 2x = 4 =2x=52-4 x=24 3 =4x = –36 =x=-9 4 =Question 4. 4. what number must multyply each side of the equation 2/5x=10 to produce x=25 5(2/5x)=10*5 2x=50 x=25 the number is 5 6=2|s| = 18 =2|9|=18 or 2|-9|=18 s=9or -9 7 =x + 4 – 7x = 22 =-6x+4=22 =-6x=18 x=-3 8= 3(x – 2) + 5x = 18 =3x-6+5x=18 8x-6=18 8x=24 x=3 9= 6 – 4x = 4(3 – x) = 6-4x=12-4x no solution 10= let length=4x+3 and width x perimeter=2w+2l=86 =2(4x+3)+2(x)=86 =8x+6+2x=86 =10x+6=86 =10x=80 x=8 width =8in length =4x+3=32+3=35 length=35in 11= A) -3/X= -15 =-3=-15x=x=1/5 (B) -2/X= 16 -2=16x =x=-1/8 (C)2/X= 2 =2=2x =x=1 (D)3/X/=0 3=0 no solution D is no solution 12. z=4x+2y =2y=z-4x y=(z-4x)/2
Positive: 40 %
Answer #5 | 30/12 2013 07:26
Very naughty situation that "a couple" becomes TWELVE ! Will do a COUPLE viz Qu. 9 and Qu. 10 Qu. 9 6 - 4x = 4 (3 - x) 6 - 4x = 12 - 4x No real solutions Qu 10 L = 4W + 3 P = 2 ( L + W ) 86 = 2 ( 5W + 3) 43 = 5W + 3 W = 8 in L = 35 in Hope this helps in some way.
Positive: 33.333333333333 %

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