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tiny-mole [99]
3 years ago
5

Which of the following is an extraneous solution of square root 4x+41=x+5

Mathematics
1 answer:
vaieri [72.5K]3 years ago
8 0
Answer: x=8

Hope this Helps! (╹◡╹)

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Which of the following metric prefixes is largest? <br><br>A.nano<br>B.milli<br>C.centi<br>D.micro
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Answer:


Step-by-step explanation:

The right answer is "Centi" on apex

8 0
3 years ago
F(x) = <img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%2B7%7D%20-%5Csqrt%7Bx%5E2%2B2x-15%7D" id="TexFormula1" title="\sqrt{x+7} -\
elena-s [515]

Answer:

x >= -7  ................(1a)

x >= 3   ...............(2a1)

Step-by-step explanation:

f(x) =  \sqrt{x+7}-\sqrt{x^2+2x-15}  .............(0)

find the domain.

To find the (real) domain, we need to ensure that each term remains a real number.

which means the following conditions must be met

x+7 >= 0  .....................(1)

AND

x^2+2x-15 >= 0 ..........(2)

To satisfy (1),  x >= -7  .....................(1a) by transposition of (1)

To satisfy (2), we need first to find the roots of (2)

factor (2)

(x+5)(x-3) >= 0

This implis

(x+5) >= 0 AND (x-3) >= 0.....................(2a)

OR

(x+5) <= 0 AND (x-3) <= 0 ...................(2b)

(2a) is satisfied with x >= 3   ...............(2a1)

(2b) is satisfied with x <= -5 ................(2b1)

Combine the conditions (1a), (2a1), and (2b1),

x >= -7  ................(1a)

AND

(

x >= 3   ...............(2a1)

OR

x <= -5 ................(2b1)

)

which expands to

(1a) and (2a1)   OR  (1a) and (2b1)

( x >= -7 and x >= 3 )  OR ( x >= -7 and x <= -5 )

Simplifying, we have

x >= 3  OR ( -7 <= x <= -5 )

Referring to attached figure, the domain is indicated in dark (purple), the red-brown and white regions satisfiy only one of the two conditions.

3 0
3 years ago
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100 points!!! Whoever answers this question correctly, I will give you 100 points on my second question. If you can't use the an
Paha777 [63]

Answer:

ummmm Tupac

Step-by-step explanation:

7 0
3 years ago
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Help my cousin pls<br> Credit: 10 points
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Ummm, we can't choose one of the problems if we can't see any of the problems...

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