Question

PLEASE HELP ILL GIVE BRAINLIEST !! FAKE ANSWERS WILL GET REPORTED.

Answer 1

Answer:

b ≈ 3.9

General Formulas and Concepts:

Pre-Algebra

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

Trigonometry

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

• a is a leg
• b is another leg
• c is the hypotenuse

Step-by-step explanation:

Step 1: Define

Identify variables

a = 1

c = 4

Step 2: Solve for b

1. Substitute in variables [Pythagorean Theorem]:                                            1² + b² = 4²
2. Evaluate exponents:                                                                                         1 + b² = 16
3. [Subtraction Property of Equality] Subtract 1 on both sides:                         b² = 15
4. [Equality Property] Square root both sides:                                                    b = √15
5. [√Radical] Evaluate:                                                                                         b = 3.87298
6. Round:                                                                                                               b ≈ 3.9