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andriy [413]
3 years ago
12

Solve the equation. √x-4=8 The solution isx =

Mathematics
2 answers:
inysia [295]3 years ago
5 0

Answer:

x = 68

Step-by-step explanation:

Black_prince [1.1K]3 years ago
3 0

Answer:

x = 68

Step-by-step explanation:

Square both sides of the equation. This gives us:

x - 4 = 64

Then add 4 on both sides. This gives us:

x = 68

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(2A)<br> Find f(2x + 4) for f(x) = 1 - x2
Aleksandr-060686 [28]

Answer:

f(2x + 4) = -4x² - 16x - 15

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>

Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients
  • Expanding (FOIL)

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

f(x) = 1 - x²

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em> [Function f(x)]:                                                                          f(2x + 4) = 1 - (2x + 4)²
  2. Expand [FOIL]:                                                                                                  f(2x + 4) = 1 - (4x² + 16x + 16)
  3. (Parenthesis) Distribute negative:                                                                   f(2x + 4) = 1 - 4x² - 16x - 16
  4. Combine like terms:                                                                                          f(2x + 4) = -4x² -16x - 15
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2 years ago
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3 years ago
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Elza [17]
6/10 and 13/20, sorry i would explain this but its late, cheers.
Hope this Helps.
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3 years ago
A swimming pool had 2.5 million liters of water 2million liters evaporated what percent of weather evaporated
Rufina [12.5K]
2million/2.5million=80%
8 0
3 years ago
Jo and Gary share marbles in the ratio 3:1 jo gets 12 how many marbles does gary get
Schach [20]

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8 0
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