# Tutor profile: Khristian L.

Inactive

Khristian L.

Senior at CUNY NYC College of Technology, Future engineer

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## Questions

### Subject: Basic Math

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Question:

Jonathan has $10 that he earned from selling candy at school. He goes to the store in hopes of buying a baseball card that costs $8.50, but is on sale for 20% off. What is the price he has to pay? How much money will he have left?

Inactive

Khristian L.

Answer:

20% of 8.50 is 1.70. 8.50-1.70= 6.80, Therefore the final price will be $6.80. His change will be $10.00-6.80 = $3.20

### Subject: Mechanical Engineering

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Question:

Find the natural frequency of a bodily system that has a spring with a stiffness of 6,000 and a mass of 25.6kg.

Inactive

Khristian L.

Answer:

Solution: Wn= sqrt(k/m) so; sqrt(6,000/25.6) wn= 15.31

### Subject: Algebra

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Question:

Solve for x: 2x+5=-35

Inactive

Khristian L.

Answer:

x=-20

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