3 years ago

Explain what it means for a solution of an equation to be extraneous.

1 answer:

4 0

Answer:

Extraneous Solutions An extraneous solution is a root of a transformed equation that is not a root of the original equation because it was excluded from the domain of the original equation. Example 1: Solve for x, 1 x − 2 + 1 x + 2 = 4 (x − 2) (x + 2).

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Which equation is y = (x + 3)2 + (x + 4)2 rewritten in vertex form?

SSSSS [86.1K]

Answer:

its B. y=2(x+7/2)^2+1/2 :)

Step-by-step explanation:

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3 years ago

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Johan found that the equation –2|8 – x| – 6 = –12 had two possible solutions: x = 5 and x = –11. Which explains whether his solu

emmasim [6.3K]

Answer:

He is not correct because he made a sign error.

Step-by-step explanation:

-2 |8-x| - 6 = -12

-2 |8-x| = -12 + 6

-2 |8-x| = - 6

2 |8-x| = 6

|8-x| = 3

2 possible solutions:

8-x = 3 ----> x = 5

8-x = -3 ----> x = 11

Comparing the answer choices, we can see that Johan got the sign of x = 11 wrong.

Hence the correct answer is:

He is not correct because he made a sign error.

3 0

3 years ago

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What is the mean of the values in the dot plot?<br><br><br> Enter your answer in the box.

e-lub [12.9K]

Answer:

Mean = 33

Step-by-step explanation:

Mean = sum of scores /no of scores

Mean = 132/4
Mean = 33

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3 years ago

Let f(x)= 8x^3 - 28x + 61 and g(x) = 2x+5. fins f(x) over g(x).

Rina8888 [55]

8x^3-28x+61/2x+5

4x^2-10x+11 with a remainder of 6

Not sure if there is supposed to be a remainder but there is one

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3 years ago

30 could be am awnser but so could 28 and 35

STatiana [176]

Answer: definitely 35

Step-by-step explanation:

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4 years ago