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30 May, 23:03

Are the two expressions equivalent?

Expression A: 11z+9z

Expression B: (11+9) z

A.

No, because for z = 5, the value of Expression A is 100 and the value of Expression B is 64.

B.

No, because for z = 5, the value of Expression A is 64 and the value of Expression B is 100.

C.

Yes, because for z = 5, the value of Expression A is 100 and the value of Expression B is 100.

D.

Yes, because for z = 5, the value of Expression A is 64 and the value of Expression B is 64.

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Answers (1)
  1. 31 May, 01:28
    0
    C

    Step-by-step explanation:

    11z+9z (11+9) z

    20z (20) z

    (11•5) + (9•5) (11+9) 5

    55+45 (20) 5

    100 100
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