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30 April, 17:02

Solve 4r2 - 7 = 29.

a. + - 6

b. + - 3

c. + - 4

d. + - 5

+3
Answers (1)
  1. 30 April, 19:17
    0
    4r^2-7=29

    +7 both sides

    4r^2=36

    :4 both sides

    r^2=9

    square root both sides

    r=+/-3 B
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