subject
Mathematics, 06.10.2019 02:20 newben

The work of a student to solve the equation 3(2x – 4) = 8 + 2x + 6 is shown below:
step 1: 3(2x – 4) = 8 + 2x + 6
step 2: 5x – 7 = 14 + 2x
step 3: 5x – 2x = 14 + 7
step 4: 3x = 21
step 5: x = 7
in which step did the student first make an error and what is the correct step? (5 points)
step 2; 6x – 12 = 14 + 2x
step 2; 6x – 7 = 2(6 + x + 4)
step 3; 5x – 2x = 14 – 7
step 3; 5x + 2x = 14 + 7

ansver
Answers: 1

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 18:50, cody1097
Which of the following is a function? a.) {(-2, -4/5), (-1,-,,-1)} b.) {(-2,,1/,3/,1)} c.) {(-22)} d.) {(-21)}
Answers: 3
image
Mathematics, 21.06.2019 22:00, alyssa32900
Sara has been reading about different types of financial grants, including federal pell grants, academic competitiveness grants, smart grants, and teach grants. which statement about these grants is true? filling out a fafsa will not her apply for these grants. she will not have to pay back any funds she receives from these grants. these grants only go to students with less than a 3.0 gpa. she will have to pay back all the funds she receives from these grants.
Answers: 2
image
Mathematics, 21.06.2019 22:30, fluffpupkiki
5. (04.07)which of the following exponential functions goes through the points (1, 12) and (2, 36)? (2 points)f(x) = 3(4)^xf(x) = 4(3)^-xf(x) = 3(4)^-xf(x) = 4(3)^x
Answers: 1
image
Mathematics, 22.06.2019 01:30, nickocasamplonp6mlob
Simplify 1/3 12x - 6 a. -2x-1 b.-2x-8 c.-x+4 d.3x+10 e. 4x-2
Answers: 1
You know the right answer?
The work of a student to solve the equation 3(2x – 4) = 8 + 2x + 6 is shown below:
step 1: 3...

Questions in other subjects:

Konu
Mathematics, 29.01.2020 07:47