Transcription of Mid-Chapter Quiz for Chapter 8 - Cengage
1 Mid- Chapter quiz for Chapter 843365.(d)(e) Students: 140; Nonstudents: 25; Major contributors: 35(f)(not possible)3195319546524657555515s1822xd27 30215x27xx8x18x118231951822x555y15yyx18x 1200499518z5100z5z5y115y1x18x1200140355x 5251x13520025z55s35d5y5 y12002001995z55z557z5y1y1x120033952200z5 92z55z5y17y12y2x120049950z100z4z555y15y into the first equation to obtainor will quiz for Chapter is not the is a solution. 26526 2016526 252 50248525s10d212s4d5?2s10, 4d5124fi25s1d212s22d5?2s1, solutionyx 4 1134 1 3 4 523 6x+9y=92x 3y=6434 Chapter 8 Systems of , 2d x55 2x510 2x26542x23s2d54 y52 , 24d, s1, 4dy54y524x51x523 05sx13dsx21d 05x212x23 52x252x12 52x252sx11d y52sx11d solutionyx423561 2 15364324xy =xy = 2 4(4, 4)(4, 4) solutionsyx 3 22345 3 4 5213y=1+2x x2y=x 1(2, 1)( 1, 2) , 2dyx1 15267 2 1 3 43214(4, 2)x=42x y= , 21dyx 256 4 3 2 123y=(5x 13)y=(1 2x)1133(2, 1) , 0dyx 2642 6 8 4648(8, 0)2x+7y=163x+2y= , 12d, s212, 5dyx 16 4 84816 8 1616x2+y2=1697x 17y= 169( 12, 5)(5, 12)
2 Mid- Chapter quiz for Chapter , 34132 53413 545013241613y55190132232 x5227023959013 239x52270 6x245x12885186x29s5x232d518 y55x2326x29y5182y525x132 , 10d 55 520215x52s10d215 y510 2x1 , 1d y5 1 x 5 8 y5 1 x1 10y5 18 248y5248 x1 10y5 185x1 2y5 42 x1 10y5 , 4d y5 4 x 5 22 y5 4 x1 113y5 383 2923y523683 x1 113y5 383 7x2 5y5 234 x1 113y5 383 7x2 5y5 234 3x1 11y5 38436 Chapter 8 Systems of y1z526 x12y2z514 x1 model:Labels:Amount SolutionAmount Solution System of equations: 20x150y5600 x1y520 21 AmountSolution 1By substitution gallons at 20% solutiongalllons at 50% solution 202x5623 x51313 , 212, 1d c5 1 b 5212 a 5 12 c5 1 b1 32c5 1 a 212c5 0 26b2 8c5 25 b1 32c5 1 a1 b1 c5 1 26b2 8c525 22b2 3c522 a1 b1 c5 19a1 3b1 c5 44a1 2b1 c5 2 a1 b1 c5 , 21, 3d z5 3 y 5 21 x 5 5 z5 3 y1112z5 312 x 1 4z5 17 532z5 1592 y1112z5 312 x 1 4z5 17 25y2 z5 2 2y1 11z5 31 x 1 4z5 17 x2 5y1 3z5 1923x1 2y2 z5220 x 1 4z5 17 Section and Linear Systems437 Section and Linear ::712413.
3 5 3 3y2 z5 5 x 12z521017. x1 6y27z 52322x115y15z1w5 9 5x18y12z c522 b 5 3 a 5 1 c522 b 5 3 a 1 c521 23c5 6 b 5 3 a 1 c521 22b2 3c5 0 b 5 3 a1 b1 c5 2 22b2 3c5 0 22b 526 a1 b1 c5 2 85 as2d21 bs2d1c 4a12b1c5 8245as21d21bs21d1c a2 b1c524 25 as1d21 bs1d1c a1 b1c5 2
