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anonymous
 one year ago
12. Which equation is an identity? (1point)
A.8(5x + 2)= 5x  6
B.7z + 10  z = 8z  2(z5)
C.8m  4 = 5m + 8  m
D.6y + 5 = 6y  5
13. Which equation has no solution? (1point) A. 7v + 2 = 8v  3
B. 3x  5 = 3x + 8  x
C. 4y + 5 = 4y  6
D. 7z + 6 = 7z  5
14. Solve the following equation (1point)
5(z  4)  z = 4z  20
A. 4
B. 4
C. Infinitely many solutions
D. No solution
15. Solve the following equation (1point)
4 + 2y = 9 + 2y
A. 4
B. 4
C. Infinitely many solu
anonymous
 one year ago
12. Which equation is an identity? (1point) A.8(5x + 2)= 5x  6 B.7z + 10  z = 8z  2(z5) C.8m  4 = 5m + 8  m D.6y + 5 = 6y  5 13. Which equation has no solution? (1point) A. 7v + 2 = 8v  3 B. 3x  5 = 3x + 8  x C. 4y + 5 = 4y  6 D. 7z + 6 = 7z  5 14. Solve the following equation (1point) 5(z  4)  z = 4z  20 A. 4 B. 4 C. Infinitely many solutions D. No solution 15. Solve the following equation (1point) 4 + 2y = 9 + 2y A. 4 B. 4 C. Infinitely many solu

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorry the reply took so long. An identity is an equation which is true for every value of the variable is called an identity equation. To make it shorter, I will do 1 example. B says that 7z + 10  z = 8z  2(z5) Well 7z  z would be 6z + 10. the other equation is 8z  2z10 simplified it is 6z10 6z10 and 6z + 10 are not the same, so it is not b. The answer is C.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Skipping down to 14. 5(z  4)  z = 4z  20 Simplify 5z  20  z = 4z  20 4z  20 = 4z  20 The answer would be infinite. No matter what you put in for z, the answer will always be the same. C.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0#15 4 + 2y = 9 + 2y No solutions.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So 12= C 13= C 14= C 15= no solutions

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0not completely 100% on those answers, but its the best I can do. :)
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