barbarajean1314 barbarajean1314

14-02-2018
Mathematics

contestada

Which statement is NOT true? If x2 = 1, then x = 1. If x = –1, then x2 = 1. If x = 1, then x2 = 1. x2 = 1 if and only if x = 1 or x = –1.

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susanwiederspan susanwiederspan

20-02-2018

These are all true, except A is only half true.

The square root of 1 is +/- 1, so if [tex]x^2=1[/tex], then [tex]x=1, x=-1[/tex].

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tunerrcarz tunerrcarz

09-04-2020

A is only half true, but all others are true

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An attractive force of 7.2 N occurs between two point charges that are 0.10 m apart. If one charge is -4.0 µC, what is the other charge? (µC = 1.0 × 10^-6 C) a