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# Tutor profile: Ingrid B.

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Ingrid B.
Elementary Teacher for 14 years (2nd, 3rd, and 4th)
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## Questions

### Subject:Pre-Algebra

TutorMe
Question:

What is a variable?

Inactive
Ingrid B.

A variable is an unknown number.

### Subject:Basic Math

TutorMe
Question:

Explain why in subtraction, the subtrahend must be larger than the minuend.

Inactive
Ingrid B.

In subtraction, the subtrahend must be larger than the minuend because you can only subtract a smaller number from a larger number. Their positions cannot be switched as in addition.

### Subject:Physical Science

TutorMe
Question:

Compare and Contrast gravity and friction. Be sure to include at least 2 ways they are alike and 2 ways they are different. Examples should also included.

Inactive
Ingrid B.

Gravity and Friction are alike in that they are both forces. They affect our daily lives a great deal. However, whereas friction helps things move, such as cars, gravity holds things in place only. In addition, we can live slightly without friction, but it would be more difficult to function without gravity.

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