# Tutor profile: Ashlee W.

Inactive

Ashlee W.

Chemistry Graduate from Top Tier College

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## Questions

### Subject: Pre-Algebra

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Question:

Solve 7X - 2 - 4X = 25

Inactive

Ashlee W.

Answer:

Answer: 1) combine X values: 7X - 4X = 3X 3X - 2 = 25 2) get X on it's own...reverse sign of numerical value by adding +2 to both sides: 3X = 27 3) get X on it's own again: divide both sides by coefficient: 3X/3 and 27/3 solution: X = 9

### Subject: Basic Math

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Question:

3 * (3 + 7) - 4^2 / 2

Inactive

Ashlee W.

Answer:

Following PEMDAS: parenthesis: 3+7 = 10 3* 10 - 4^2 / 2 exponent: 4^2 = 16 3 * 10 - 16 /2 Multiplication: 3 * 10 = 30 30 * 10 - 16 /2 Division: 16 / 2 = 8 30 - 8 Subtraction: 30 - 8 = 22 Answer: 22

### Subject: Basic Chemistry

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Question:

What molecular chemistry structure does SO3 follow?

Inactive

Ashlee W.

Answer:

Trigonal Planar : where S has 3 double pair bonds and each O has 2 lone pairs

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