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3 years ago

----------- 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:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality

Division Property of Equality

Addition Property of Equality

Subtraction Property of Equality

Algebra II

Imaginary root i

i = √-1

Step-by-step explanation:

Step 1: Define

Identify

5x² - 2 = -12

Step 2: Solve for x

[Addition Property of Equality] Add 2 on both sides: 5x² = -10
[Division Property of Equality] Divide 5 on both sides: x² = -2
[Equality Property] Square root both sides: x = ±√-2
Rewrite: x = ±√-1 · √2
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]

$\bf \textit{volume of a pyramid}\\\\
V=\cfrac{1}{3}Bh\qquad 
\begin{cases}
B=\textit{area of its base}\\
h=height\\
----------\\
B=\frac{1}{4}B\\\\
h=\frac{1}{4}h
\end{cases}\implies V=\cfrac{1}{3}\cdot \cfrac{B}{4}\cdot \cfrac{h}{4}
\\\\\\
V=\cfrac{1}{3}\cdot \cfrac{1}{4\cdot 4}Bh\implies V=\cfrac{1}{16}\left( \cfrac{1}{3}Bh \right)$

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