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sashaice [31]
2 years ago
10

Expand and simplify(x - 1)(2x + 3)​

Mathematics
2 answers:
kykrilka [37]2 years ago
4 0

Answer:

2x^2+x-3

Step-by-step explanation:

jenyasd209 [6]2 years ago
4 0

Answer:

2x² + x - 3

Step-by-step explanation:

You need to foil the equation.

Foil = (a + b)(c + d) = ac + ad + bc + bd

(x - 1)(2x + 3)

x · 2x = 2x²

x · 3 = 3x

-1 · 2x = -2x

-1 · 3 = -3

Putting them together gets us:

2x² + 3x - 2x - 3

Add like terms to simplify it.

2x² + x - 3

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gladu [14]

Answer:

x = 4√5

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

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Trigonometry</u>

[Right Triangles Only] Pythagorean Theorem: a² + b² = c²

  • a is a leg
  • b is another leg
  • c is the hypotenuse<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

Leg <em>a</em> = 8

Leg <em>b</em> = 4

Hypotenuse <em>c</em> = <em>x</em>

<em />

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

  1. Substitute in variables [Pythagorean Theorem]:                                            8² + 4² = x²
  2. Evaluate exponents:                                                                                         64 + 16 = x²
  3. Add:                                                                                                                   80 = x²
  4. [Equality Property] Square root both sides:                                                    √80 = x
  5. Rewrite:                                                                                                             x = √80
  6. Simplify:                                                                                                             x = 4√5
3 0
2 years ago
Whole numbers with more digits are ____ than the whole numbers with fewer digits.
Kipish [7]
Whole numbers with more digits are greater than whole numbers with fewer digits. 
 
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3 0
3 years ago
Find the area of the figure
lana [24]

Answer:

Below

Step-by-step explanation:

First I found the area of the portion that extends off (if that makes sense??)

It is a triangle, so use A = bh/2

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A = (6)(3)

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Total area = 18 + 6

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Hope this helps! Best of luck <3

5 0
3 years ago
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Write 7.12 as a mixed number in simplest form.
andrezito [222]

Answer:

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Step-by-step explanation:

8 0
2 years ago
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Jason has a piece of wire that is 63.9 inches long. He cuts the wire into 3 equal places. Estimate the length of one piece of wi
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Answer: 21.3

Step-by-step explanation:

63.9 divided by 3 equal pieces is 21.3!

5 0
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