Mathematics, 09.10.2019 21:40 aubreymoore9441
12. (08.05 hc)
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? (1 point)
step 4
step 3
step 2
step 1
13. (08.06 lc)
variable g is 8 more than variable w. variable g is also 4 less than w. which pair of equations best models the relationship between g and w? (1 point)
g= w β 8
g = w + 4
w = 8g
w = g β 4
g= w + 8
g = w β 4
w = 8g
w = g + 4
Answers: 2
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Answers: 1
12. (08.05 hc)
the work of a student to solve a set of equations is shown:
equati...
the work of a student to solve a set of equations is shown:
equati...
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