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4 years ago

Solve for x. 8x=4x−328x=4x−32 A. 8 B. 4 C. −4−4 D. −8

Mathematics

2 answers:

Marat540 [252]4 years ago

6 0

8x = 4x-32
8x - 4x = -32
4x = -32
x = -32/4
x =-8

kari74 [83]4 years ago

3 0

8x = 4x-32

8x - 4x = -32

4x = -32

x = -32/4

x =-8

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5. If the tree's circumference is 141.3ft, what is its diameter?

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Answer:

d ≈ 45 ft

General Formulas and Concepts:

Symbols

π (pi) ≈ 3.14

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

Geometry

Circumference of a Circle Formula: C = πd

Step-by-step explanation:

Step 1: Define

Circumference C = 141.3 ft

Step 2: Solve for d

Substitute in C [Circumference Formula]: 141.3 ft = πd
Substitute in π (approximation): 141.3 ft ≈ 3.14d
[Division Property of Equality] Divide both sides by 3.14: 45 ft ≈ d
Rewrite: d ≈ 45 ft

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