(a) ac=cd\n(b) 3x +5y=2z\n(c) x+4=t over 7
215826
(a) ac is equal to cd and It can be used to express to length and breath of a square.\n\n(b) 3x plus 5y is equal to 2z and it can be used to express to compare inapplicable two concepts.\n\n(c) x plus 4 is equal t and it is greater 7 and x would be 5 or 5 over value.
395312
3x + 4 < x + 8\n2x < 4\nx < 2\n\n{x | x < 2}
370005
1.always\n\n2.always\n\n3.2w+8=120\n2w=112\nw=56\n5z+56=180\n5z=124\nz=24.8*\n\n5.1/2(5x+1)=x+4\n5x+1=2x+8\n3x=7\nx=7/3
133898
1 is answer A, 2 is not answer B, C or D
649355
1. 2\n\n2. 2a^2b\n\n3. 6xyz^2(2z-3y)\n\n4. 3a(4a-b+3ab^2)\n\n5.(d+2)(d+3)\n\n6.(x-9)(x-2)\n\n7. (4x-1)(x+3)\n\n8. (4b-9)(4b+9)\n\n9.(y+7)^2\n\n10. (2m+7n)^2
395658
Simple substitution.\n\n5(3) - 2(2) + 4(4)\n15 - 4 + 16\n27
546896
Line AC = 6, line BC= 2x+2, line AB=x+1\nSo 2x + 2 = 6\n2x = 4\nx = 2 <-- option C
376134
3x+2y-z=-11\n-10x-2y+4z=34     (3)*-2\nadding \n-7x+3z=23     (4)\n2x-3y+4z=11     (2)\n15x+3y-6z=-51  (3)*3\nadding\n17x-2z=-40    (5)\n(4)*-2     14x-6z=-46\n(5) *-3    -51x+6z=120\nadding\n-37x=74\nx=-2\nsub14+3z=23\nz=3\nsub y=-1\nsolution set{-2,-1,3}
512937
∫ax(2 -x)dx\n= ∫(2ax - ax²)dx\n= 2a * ½x² - a * ⅓x³ + c\n= ax² - ⅓ax³ + c
337606
1. c\n2. c\n3. c\n4. c\n5. c
373536
Factor out first........\n\n3x(3x-5y)\n\n__________\n\n(3x-5y)(3x+5y)\n\n\nCancel:  the 3x-5y goes away both top and bottom.  That should give you a hint as to what to do next.
542608
You need to find a common denominator for each one.\n(7x+3)/x\n\n(40c+18z)/(15cz)\n\n(8+21)/6y = 29/6y
435671
OK,as the first one is already done,I am doing the rest for you\n4(2x-6)=x+2 =>8x-24=x+2  =>8x-x=2+24  =>7x=26  =>x=26/3=8 2/3  (3) 2(x+5)+1=3(x-1)+4   =>2x+10+1=3x-3+4 =>2x-3x=-3+4-10-1  => -x=-4  =>x=1  (5)x+6=4(4x-1)   =>x+6=16x-4  =>x-16x=-4-6  => -15x=-10  =>x=-10/-15=2/3 [after reducing]
675297
(1) C\n   B = D + 2\n   M = B + 4\n   M = ( D + 2 ) + 4\n   M = D + 6\n\n(2) E\n   B = 2H\n   M = B + 6\n   M = ( 2H ) + 6\n   M = 2H + 6\n\n(3) D\n   12 bulbs / x minutes\n   12 bulbs / ( x minutes ( 1 hours / 60 minutes ) )\n   12 (60) bulbs / x ( 1 hour )\n   ( 2 (12) (60) ) bulbs / x ( 2 hours )\n\n(4) D\n   Stop 1: x\n   Stop 2: x + y\n   Stop 3: ( x + y ) / 3\n   Stop 4: ( ( x + y ) / 3 ) + 2 = ( x + y + 6 ) / 3
397251
3x^2(5x^2 – 2x + 6) – 2x(x^2 + 3x + 9)\n15x^4-6x^3+18x^2-2x^3-6x^2-18x\n15x^4-8x^3+12x^2-18x\nx(15x^3-8x^2+12x-18)
227060
-3x + 5y = 8\nx + 2y = 1\n\n(-3x + 5y) + (x + 2y) = 8 + 1\n-3x + 5y + x + 2y = 9\n-2x + 7y = 9\n\n7y = 2x + 9\ny = (2/7)x + (9/7)\n\nx + 2y = 1\nx + 2((2/7)x + (9/7)) = 1\nx + (4/7)x + (18/7) = 1\n7x + 4x + 18 = 7\n11x + 18 = 7\n11x = -11\nx = -1\n\ny = (2/7)x + (9/7)\ny = (2/7)(-1) + (9/7)\ny = (-2 + 9)/7\ny = (7/7)\ny = 1\n\nx = -1\ny = 1
545890
17.\n5x+7y=-1  (1)\n-2y+3z=9  (2)\n7x-z=27    (3)\n(3)*3\n21x-3z=81\n-2y+3z=9\nadding\n21x-2y=90 *7\n147x-14y=630\n10x+14y=-2\n157x=628\nx=4\nsub in (1)\ny=-3\nsubin (2)\nz=1\n\n\n18.\nr-s+3t=-8    (1)     \n2s-t=15       (2)\n3r+2t=-7      (3)\n\n(2)*2  4s-2t=30\n          3r+2t=-7\nadding\n4s+3r=23\n(2)*3  6s-3t=45\n       r-s-3t=-8\nadding\n5s+r=37\n4s+3r=23\n15s+3r=111\nsubtracting\n11s=88\ns=8\nsub in (2)\n16-t=15\nt=1\nsub in (3)\n3r+2=-7\nr=-3