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Elena L [17]
3 years ago
7

Given the equation square root of 2x-1=7 solve for x and identify if it is an extraneous solution. I came up with the answer 25

but is it an extraneous solution?
Mathematics
1 answer:
alexira [117]3 years ago
3 0

Step-by-step explanation:

To check if a solution is extraneous, simply plug it back into the original equation.  If it works, then solution isn't extraneous.

√(2x−1) = 7

√(2(25)−1) = 7

√(50−1) = 7

√(49) = 7

7 = 7

So the solution isn't extraneous.

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4 0
3 years ago
The ratio of rock music to total CDs that ella owns is 25/40. Paolo has 50 rock music CDs. The ratio of rock music to total CDs
qaws [65]
They own a total of 120 CDs.

GIVEN:
Ella: ratio of rock music to total CDs that she owns 25/40
Paolo: has 50 rock music CDs. The ratio of rock music to total CD is equal to Ella's ratio.

Proportion: a/b = c/d where ad = bc

25/40 = 50/x
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x = 80  total of Paolo's CDs

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5 0
3 years ago
If 3x plus 2 equals 90 then what is the value of x
Firdavs [7]

Hello!

3x+2=90

Explanation:

↓↓↓↓↓↓↓↓↓↓↓↓↓

First you had to subtract by 2 from both sides of the equation.

3x+2-2=90-2

Simplify

3x=88

Then you divide by 3 from both sides of the equation.

\frac{3x}{3}=\frac{88}{3}

Simplify it should be the correct answer.

x=\frac{88}{3}

Answer⇒⇒⇒⇒⇒x=88/3

Hope this helps!

Thank you for posting your question at here on Brainly.

Have a great day!

-Charlie

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D.
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8 0
3 years ago
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