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adell [148]
3 years ago
5

4x + 9 = 2x + 15 .. I need help

Mathematics
1 answer:
valkas [14]3 years ago
3 0

Answer:

x = 3

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

Equality Properties

Step-by-step explanation:

<u>Step 1: Define Equation</u>

4x + 9 = 2x + 15

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Subtract 2x on both sides:                    2x + 9 = 15
  2. Subtract 9 on both sides:                      2x = 6
  3. Divide 2 on both sides:                          x = 3

<u>Step 3: Check</u>

<em>Plug in x into the original equation to verify it's a solution.</em>

  1. Substitute in <em>x</em>:                    4(3) + 9 = 2(3) + 15
  2. Multiply:                               12 + 9 = 6 + 15
  3. Add:                                     21 = 21

Here we see that 21 does indeed equal 21.

∴ x = 3 is the solution to the equation.

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Step-by-step explanation:

11.04 = 10(1.02)^n

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n = 4.99630409516

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So a reasonable domain would be 0 ≤ x < 5

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f(0) = 10(1.02)^0

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The y-intercept represents the height of the plant when they began the experiment.

f(1) = 10(1.02)^1

f(1) = 10(1.02)

f(1) = 10.2

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f(1)=10.2

Average rate= (fn2-fn1)/(n2-n1)

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<h3>Frequency Table:</h3>

Color                              Brown    Yellow     Red      Green     Orange    Total

<h3>Absolute Frequencies</h3>

Observed Frequency     67           22           51           24           24         188

Expected Frequency     56           38           38           38            18         188    

<h3>Relative Frequencies:</h3>

Observed Frequency   36%         12%       27%         13%          13%

Expected Frequency    30%        20%      20%        20%          10%

<h3>What is a frequency table?</h3>

A frequency table is a display of the number of occurrences of a particular value or characteristic.

A frequency table makes it easy to display and interpret a distribution of data.

The absolute frequencies shows the absolute values of the observed and expected frequencies, while the relative frequencies shows the percentage values of the observed and expected frequencies.

<h3>Data and Calculations:</h3>

Color                              Brown    Yellow     Red      Green     Orange    Total

Observed Frequency     67           22           51           24           24         188

Expected Frequency     30%        20%       20%        20%         10%      100%

Learn more about frequency tables at brainly.com/question/1094036

#SPJ1

<h3>Question Completion:</h3>

Fill in the following table on the frequency of the colors, indicating the absolute and relative frequencies of the distributions.

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