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Tutor profile: Isaiah B.

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Isaiah B.
Civil Engineer in Public Sector, Tutor For Half A Year
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Questions

Subject: Pre-Algebra

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Question:

Round 32,399 to the thousands place.

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Isaiah B.
Answer:

When rounding, always look at the number to the right of the number you are rounding. In this example, we will focus on the 3 in the hundreds place, as this is to the right of the thousands place, which we have been asked to round to. If it is 5 or greater, we round up. If it is less than 5, we round down. In this case 3 is less than 5, so we will round down to 32,000.

Subject: Algebra

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Question:

Simplify the following into one single exponent: (x^-3)(x^0)/(x^6)

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Isaiah B.
Answer:

First, simplify x^0 into 1. Any number to the power 0 will always be equal to 1. Then, turn x^-3 into 1/(x^3). Now multiply (1/x^3)(1/x^6). This simplifies to 1/x^9, which equals x^(-9).

Subject: Physics

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Question:

A truck covers a distance of 15 km with a force causing it to accelerate at a rate of 0.7 m/s^2. Calculate the work done on the truck.

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Isaiah B.
Answer:

Work can be calculated using this formula: W=Fd (Work equals force times distance) In this case F=0.7 m/s^2 and d=15 km Therefore, work=W=Fd=(0.7 m/s^2)(15 km) = 10.5 J

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