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3 years ago

Please help me. Any help is greatly appreciated

Mathematics

2 answers:

timama [110]3 years ago

4 0

Let’s add the two speeds together so we can tell how far apart they are, so they move apart at 1,200 mph. At 3 PM, this is how far away they will be from each other. At 4 PM, they will be double that, which is 2,400. They still need to go 300 miles, which is a quarter of how fast they go in an hour, meaning they need to go for another quarter of an hour. That is 15 minutes, making the time 4:15 when they are 2,700 miles apart, which is answer b.

iragen [17]3 years ago

3 0

Answer:

Step-by-step explanation:

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4. What value of x makes the inequality true? 3(2x - 1) - 11x S -3x + 5

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Answer:

A. {x: x ≥ -4}

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Distributive Property

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Algebra I

Terms/Coefficients
{Builder Set Notation}

Step-by-step explanation:

Step 1: Define

Identify

3(2x - 1) - 11x ≤ -3x + 5

Step 2: Solve for x

[Distributive Property Distribute 3: 6x - 3 - 11x ≤ -3x + 5
[Subtraction] Combine like terms: -5x - 3 ≤ -3x + 5
[Addition Property of Equality] Add 5x on both sides: -3 ≤ 2x + 5
[Subtraction Property of Equality] Subtract 5 on both sides: -8 ≤ 2x
[Division Property of Equality] Divide 2 on both sides: -4 ≤ x
Rewrite: x ≥ -4

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