Woo Jin is solving the following equation for - id7437437414267983 от owlsandR5 23.12.2021 10:31

Question

Mathematics: Woo Jin is solving the following equation for x xx. 7 − 4 x = x + 3 7−4x= x+3 ​ 7, minus, 4, x, equals, square root of, x, plus, 3, end square root His first few steps are given below. ( 7 − 4 x ) 2 = ( x + 3 ) 2 49 − 56 x + 16 x 2 = x + 3 (7−4x) 2 49−56x+16x 2 ​ =( x+3 ​ ) 2 =x+3 ​ Is it necessary for Woo Jin to check his answers for extraneous solutions?

owlsandR5 · Accepted Answer

option DStep-by-step explanation: The formulae for standard error = standard deviation/√nBut population standard deviation = 1.8 and sample size = n = 81Standard error = 1.8/√81 = 1.8/9 = 0.2...

Woo Jin is solving the following equation for x xx. 7 − 4 x = x + 3 7−4x= x+3

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Woo Jin is solving the following equation for x xx. 7 − 4 x = x + 3 7−4x= x+3 ​

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Woo Jin is solving the following equation for x xx. 7 − 4 x = x + 3 7−4x= x+3