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Sample Math Placement Test

Sample Math Placement Test

Sample Math Placement Test

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26.! ! !!!!!"! ! !!= !! !!!!!"!!! !!!is undefined when the denominator is zero.t + 3t − 3 = 0 ⇒ t = 3 or t = −327.!! ! ! !!! !! !!=! !! ! !! ! !! ! =! !! ! ! ! ! ! =(!!) !! ! ! ! (!) ! =!"(!)(!")(!) = ! !28. −7x ! y ! z !! = −7x ! 11z 5= −7x2z 529.30.!!!!! ! != !!!! !!!!! ! ! ! = !(!)!! !! = !"!!= !"= !!! ! !!! ! !!! !! −10! ! ! ! ! !! ! ! ! ! != !! ! ! ! !! ! ! !" ! = !!!! ! ! ! = !! ! ! !31.! ! !!÷ !!!!"= ! ! !!x !! !!!!!"!!!!" ! ! !!!!!" !!!!" !!!!"=m − 3 (m + 3) (m − 6)(m + 4)x2(m − 6) 5(m − 3)=(m + 3)(m + 4)1032.!− !+ !x 2 !!!!! ⇒ !− !+ !!x 3 x 3 !!x 2 !!! !!! !x 3x 2x 3 − 3 x − 3 x − 1 + 4 2x x − 12x 3 x − 3 x − 1⇒ 2x4 − 3x 2 + 12x − 9 + 8x 2 − 8x2x 3 x − 3 x − 1x 2 !!!⇒⇒ 2x4 − 3 x 2 − 4x + 3 + 8x x − 12x 3 x − 3 x − 1⇒ 2x4 + 5x 2 + 4x − 92x 3 x − 3 x − 133. −3 k − 1 = −2 k − 4 ⇒ −3k + 3 = −2k + 8 ⇒ −1k = 5 ⇒ k = −534.!− ! = !!!! ! !! ⇒ !!!(!)(!!!)(!!!)(!)= !!! ⇒ !!!!!!!"(!!!)(!) = !!!−3x + 10 2x = 5 x − 2 x ⇒ −3x + 10 2 = 5 x − 2⇒ −6x + 20 = 5x − 10 ⇒ −11x = −30 ⇒ x = 3011 = 2 8 1135.!= !!!! !⇒ E r = e R + r ⇒ Er = eR + er ⇒ Er − er = eR⇒ r E − e = eR ⇒ r =36. (1.15)(x) = 36 000 ⇒ x =eRE−e36 0001.1537. Equation 1: 2 L + 2 W = 300Equation 2: L = ! W + 10!⇒ x = $31 304.45 = original salary


Substitute equation 2 into equation 1:2 4 3 W + 10 + 2 W = 300 ⇒ 8 3W + 20 + 2 W = 300⇒ 8 3 W + 6 W = 280 ⇒ 14 W = 840 ⇒ W = 60 cm3Substituting W=60 back into equation 1:2 L + 2 (60) = 300 ⇒ 2L = 180 ⇒ L = 90 cm38. (x)(0%) + (1)(90%) = (x + 1)(80%) ⇒ 0 + .90 = 0.80x + 0.8 ⇒ 0.1 = 0.80x⇒ 0.125 L = x39. cos B = 6.508.20⇒ B = cos−16.508.20⇒ ∠B = 37.6o40. cos 64.3 ! = 11.5x⇒ x = 26.5 m

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