Mathematics, 17.07.2019 16:00 NREYESLDS2806

The work of a student to solve a set of equations is shown: equation a: y = 16 – 2z equation b: 7y = 2 – 4z step 1: –7(y) = –7(16 – 2z) [equation a is multiplied by –7.] 7y = 2 – 4z [equation b] step 2: –7y = 16 – 2z [equation a in step 1 is simplified.] 7y = 2 – 4z [equation b] step 3: 0 = 18 – 6z [equations in step 2 are added.] step 4: 6z = 18 step 5: z = 3 in which step did the student first make an error?

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 16:00, cksbanks

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Answers: 2

continue

Mathematics, 21.06.2019 18:40, bankskry

That table shows measurements (in invhes$ from cubes with different side lengths. which pairs of variables have a linear relationship? check all that apply

Answers: 3

continue

Mathematics, 21.06.2019 19:00, vava1804

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Answers: 2

continue

Mathematics, 21.06.2019 19:30, taylor511176

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

Answers: 1

continue

You know the right answer?

The work of a student to solve a set of equations is shown: equation a: y = 16 – 2z equation b: 7...