lame3245 lame3245

02-03-2019
Mathematics

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Please help!
f *( x ) = 2 sqrt ( x - 5 ) + 4

What's the value of f(21)

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hroscoe hroscoe

02-03-2019

Answer: 4 (assuming the number 4 at the end of the equation IS NOT under the radical

Step-by-step explanation:

Plug 21 in for x:

2squareroot (21-5) + 4

2squareroot 16 + 4

2(4) + 4= 12

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