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3 years ago

How can you tell when the LCM of two numbers will equal one of the numbers or equal the product of the numbers

1 answer:

7 0

When one number will divide exactly into the other one then the other one will be the LCM. For example the LCM of 4 and 8 = 8 .

When they do not divide as above then the product of the numbers may be the LCM. For example the LCM of 3 and 4 = 3*4 = 12.

The product is not always the LCM. It might be a lower number . For example the LCM of 4 and 6 is not 24 but 12. ( 24 / 2).

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Two possible solutions of √11-2x=√x^2+4x+4 are –7 and 1. Which statement is true? A) Only x = –7 is an extraneous solution.

11111nata11111 [884]

Answer:

Option D)Neither solution is extraneous.

Step-by-step explanation:

we have

$\sqrt{11-2x}=\sqrt{x^{2}+4x+4}$

we know that

two possible solutions are x=-7 and x=1

<u><em>Verify each solution</em></u>

Substitute each value of x in the expression above and interpret the results

1) For x=-7

$\sqrt{11-2(-7)}=\sqrt{-7^{2}+4(-7)+4}$

$\sqrt{25}=\sqrt{25}$

$5=5$ ----> is true

therefore

x=-7 is not a an extraneous solution

2) For x=1

$\sqrt{11-2(1)}=\sqrt{1^{2}+4(1)+4}$

$\sqrt{9}=\sqrt{9}$

$3=3$ ----> is true

therefore

x=1 is not a an extraneous solution

therefore

Neither solution is extraneous

7 0

3 years ago

Read 2 more answers

If the first equation in a linear system is 4x - 2y = -2 what would the second equation have to be for the system to have infini

alekssr [168]

Answer:

<h3>The question, </h3>

<h3>Let me explain, </h3>

<h3>For infinity many solutions </h3>

They must be parallel to each other,

For instance,

If 4x - 2y = - 2 is the equation then,

<h3>Another equation be 4x - 2y +k = </h3>

Where k can be any numerical value.

<h3 />

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Answer:how much is one message?

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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Afina-wow [57]

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3 years ago