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Assoli18 [71]
3 years ago
6

What is the value of x please help me

Mathematics
1 answer:
Tju [1.3M]3 years ago
7 0

Answer:

<h2>x = 4</h2>

Step-by-step explanation:

ΔLMN and ΔPMQ are similar. Therefore thw sides are in proportion:

\dfrac{LM}{PM}=\dfrac{NM}{QM}

We have:

LM = 3 + 9 = 12

PM = 9

NM = x + 12

QM = 12

Substitute:

\dfrac{12}{9}=\dfrac{x+12}{12}                <em>cross multiply</em>

9(x+12)=(12)(12)

9(x+12)=144             <em>divide both sides by 9</em>

\dfrac{9(x+12)}{9}=\dfrac{144}{9}

x+12=16             <em>subtract 12 from both sides</em>

x=4

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Yay, implicit differnentiation

when you take the derivitive of y, you multiply it by dy/dx
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dy/dx y^2=2y dy/dx

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ok
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3 years ago
Evaluate: 7( 14 - 8) - 6²<br><br><br>5<br><br>6<br><br>7<br><br>8 <br><br>please help if possible 3
irakobra [83]

Answer:

6

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

7(14 - 8) - 6²

<u>Step 2: Evaluate</u>

  1. Exponents:                                                                                                        7(14 - 8) - 36
  2. (Parenthesis) Subtract:                                                                                     7(6) - 36
  3. Multiply:                                                                                                             42 - 36
  4. Subtract:                                                                                                             6
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Step-by-step explanation:

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