Mathematics, 16.09.2019 07:30 carlo123

Astudent is asked to solve the equation below and to justify her/his steps. identify what, if anything, is incorrect in her/his math or justification.
z – 3 = 11
step
justification
z – 3 = 11
given
z – 3 + 3 = 11 + 3
addition property of equality
z = 14
a.
the student mislabeled the work in the second step as "addition property of equality."
b.
the student improperly applied the addition property of equality in the second step.
c.
the student computed the sums improperly to arrive at an erroneous answer in step 3.
d.
there is no error. the student's justification is correct.

Answers: 1

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 14:20

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b? will mark the

Answers: 1

Answer

Mathematics, 21.06.2019 16:30

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

Answers: 3

Answer

Mathematics, 21.06.2019 18:50

Standard deviation of 19,29,21,22,23

Answers: 1

Answer

Mathematics, 21.06.2019 20:30

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2