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antiseptic1488 [7]
4 years ago
10

What are the possible values of x if (4x – 5)2 = 49? Check all that apply.

Mathematics
2 answers:
grin007 [14]4 years ago
8 0

Answer:

3, -1/2

Step-by-step explanation:

(4x – 5)^2 = 49

Take the square root of each side

sqrt((4x – 5)^2) = ±sqrt(49)

4x-5 = ±7

Add 5 to each side

4x -5 + 5 = 5 ±7

4x = 5±7

Divide each side by 4

4x/4 = (5±7)/4

x =  (5±7)/4

First take the positive

x =( 5+7)  /4 = 12/4 = 3

Then the negative

x = (5-7)  /4 = -2/4 = -1/2

marissa [1.9K]4 years ago
7 0

Answer:

B and C

Step-by-step explanation:

taken on edge2020

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