Mathematics, 28.04.2021 19:30 pedropaulofpedrosapp
The work of a student to solve a set of equations is shown: Equation 1: m = 8 + 2n Equation 2: 3m = 4 + 4n Step 1:β3(m) = β3(8 + 2n) [Equation 1 is multiplied by β3.] 3m = 4 + 4n [Equation 2] Step 2:β3m = β24 β 6n [Equation 1 in Step 1 is simplified.] 3m = 4 + 4n [Equation 2] Step 3: β3m + 3m = β24 β 6n + 4n [Equations in Step 2 are added.] Step 4:0 = β24 β 2n Step 5:n = β12 In which step did the student first make an error?
Answers: 3
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Solve the system by the elimination method. x + y - 6 = 0 x - y - 8 = 0 when you eliminate y , what is the resulting equation? 2x = -14 2x = 14 -2x = 14
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Which speed is the fastest (use 1 mile β 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined
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The volume of a cone is 37x3 cubic units and its height is x units. which expression represents the radius of the cone's base, in units? 1 s o 3x o 6x obx 93x2
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Suppose that one doll house uses the 1 inch scale, meaning that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. if the doll house is 108 inches wide, what is the width of the full-sized house that it's modeled after? in inches and feet.
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The work of a student to solve a set of equations is shown: Equation 1: m = 8 + 2n Equation 2: 3m =...
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