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- 1. Multiple ChoiceFind the error in the problem below
19 - 2k = 3k - 1
+3k +3k
19 + 1k = -1
-19 -19
k = -20They should have divided by 1 for the last stepThey should add 19 instead of subtracting 19I can not find an errorInstead of adding 3k they should subtract 3k - 2. Multiple ChoiceFind the Error
What error did the student make when solving the equation:
1/5x + 6 = 3/5x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2The student found an incorrect common denominatorThe student did not multiply all terms by the common denominatorThe student did not use opposite operations appropriatelyThe student did not correctly eliminate the variable from one side of the equation - 3. Multiple ChoiceHow many solutions does the equation below have?
5 + 2(n + 1) = 2nIdentityOne SolutionNo SolutionTwo Solutions - 4. Multiple ChoiceHow many solutions does the equation below have?
5h - 7 = 5(h - 2) + 3IdentityNo solutionThree SolutionsOne Solution - 5. Multiple ChoiceHow many solutions does the equation below have?
6(3a +1) - 30 = 3(2a - 4)IdentityNo SolutionThree SolutionsOne Solution - 6. Multiple ChoiceIs the solution below correct?
5d = 2d - 18
-2d -2d
3d = -18
d = 6YesNo - 7. Multiple ChoiceIs the solution below correct?
-6z + 13 = 7z
+6z +6z
13 = 13z
z = 1YesNo - 8. Multiple ChoiceA hang glider, 25 meters above the ground, starts to descend at a constant rate of 2 meters per second. Which equation shows the height h after t seconds?h = 25t + 2th = -25t + 2h = 2t + 25h = -2t + 25
- 9. Multiple ChoiceTwo rectangular walls each with a length of 12 feet and a width of 23 feet need to be painted. It costs $0.08 per square foot for paint. How much will it cost to paint the walls?$22.08$34.50$23.04$44.16
- 10. Multiple ChoiceSolve
6.78x - 5.2 = 4.33x + 2.150.66-0.27-1.243 - Answer choicesTagsAnswer choicesTags