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zlopas [31]
3 years ago
12

----------- are used to represent an unknown quantity in a mathematical expression.

Mathematics
2 answers:
anastassius [24]3 years ago
4 0
A letter or symbol is used to represent an unknown quantity
Ber [7]3 years ago
4 0

Answer:

variables

Step-by-step explanation:

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You drive 8 miles from your house to your friend's house. Your house is at an elevation of 240 feet. Your friend's house is at a
dedylja [7]
(680 - 240) / 8 = 440/8 = 55 ft per mile
7 0
3 years ago
Solve 5x^2-2=-12 by taking the square root
k0ka [10]

Answer:

x = ±i√2

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>Algebra II</u>

Imaginary root <em>i</em>

  • <em>i</em> = √-1

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

5x² - 2 = -12

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

  1. [Addition Property of Equality] Add 2 on both sides:                                    5x² = -10
  2. [Division Property of Equality] Divide 5 on both sides:                                 x² = -2
  3. [Equality Property] Square root both sides:                                                    x = ±√-2
  4. Rewrite:                                                                                                             x = ±√-1 · √2
  5. Simplify:                                                                                                             x = ±i√2
7 0
3 years ago
* 70% had the cold lunch prepared by Mr. Femi
MissTica

Answer:

Step-by-step explanation  i dont know what it is cuz im not in ur class

so figure it out

3 0
3 years ago
Simplify 1/3 + 1/5 - 1/7 divided by 1/x
fgiga [73]
41x
—— = the answer.
105
4 0
3 years ago
A pen talking pyramid has a volume of 1536in what is the volume of the pentagonal pyramid if measures are multiplied by 1/4
Natasha2012 [34]
\bf \textit{volume of a pyramid}\\\\&#10;V=\cfrac{1}{3}Bh\qquad &#10;\begin{cases}&#10;B=\textit{area of its base}\\&#10;h=height\\&#10;----------\\&#10;B=\frac{1}{4}B\\\\&#10;h=\frac{1}{4}h&#10;\end{cases}\implies V=\cfrac{1}{3}\cdot \cfrac{B}{4}\cdot \cfrac{h}{4}&#10;\\\\\\&#10;V=\cfrac{1}{3}\cdot \cfrac{1}{4\cdot 4}Bh\implies V=\cfrac{1}{16}\left( \cfrac{1}{3}Bh \right)

so, you'd end up with a pyramid with a volume "one sixteenth" of the original then

now, the original had a volume of 1536, the quarterized version will then just be one sixteenth of that, or 1536 * 1/36
7 0
3 years ago
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