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Dima020 [189]
3 years ago
9

I need help with this one too. Please!!

Mathematics
2 answers:
Anestetic [448]3 years ago
8 0
The answer will be 18 years
skad [1K]3 years ago
3 0
Time = 70 / r
If r = 4.6, then
Time = 70 / 4.6
= <span> <span> <span> 15.22 years


</span></span></span>
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What are the possible values of x if (4x - 5)2 = 49? Check all that apply.<br> uw we we
kogti [31]

Answer:

x = - \frac{1}{2}, x = 3

Step-by-step explanation:

Given

(4x - 5)² = 49 ( take the square root of both sides )

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4x = 5 ± 7, thus

4x = 5 - 7 = - 2 ( divide both sides by 4 )

x = \frac{-2}{4} = - \frac{1}{2}

or

4x = 5 + 7 = 12 ( divide both sides by 4 )

x = 3

As a check

Substitute these values into the left side of the equation and if equal to the right side then they are the solutions.

x = - \frac{1}{2}

left side = (- 2 - 5)² = (- 7)² = 49 = right side ⇒ solution

x = 3

left side = (12 - 5)² = 7² = 49 = right side ⇒ solution

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