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# Karina R.

## Explains it All

### San Francisco, CA (94122)

Hourly fee \$85.00
Save up to 15%
 Background check passed as of 1/17/14 You don't pay for tutoring unless you find a good fit! You don't pay for tutoring unless you find a good fit!

# the shorter diagonal of a regular hexagon is 6. What is the length of the longer diagonal? (answer)

Hi Marsha, In order to answer this clearly, I'm going to need you to look at this image http://i.imgur.com/nJh8x.png Now, you know that the interior angles of a regular polygon must add up to 180(n-2), which in this case, with n=6, gives you 720. That means that each of the interior...

# Torque applied to the end of an axle will result in the same torque being felt at the other end of the axle. (answer)

You should think of torque as the rotational equivalent of a force. When you apply a force to one end of an object (i.e., you push it), the other end also moves. If this didn't happen, you would be compressing the object, squeezing it, as it were. The same happens with torque. If the object is...

# Find the general solution? (answer)

This is just one of those polynomial cases. You start by assuming that y is of the form (x+1)^r, calculate y' and y'', plug them back in, factor what you get, and solve the r equation that you get so that the whole thing can be zero. You get more than one value of r, so the general solution...

# Video

Watch and learn from videos created by private tutors

# The face in Spanish

The video teaches how to say some basic words in Spanish: the parts of the face.

# Colors in Spanish

Purple, blue, light blue, green, red, yellow and black in Spanish.

# Superman, save me!

Ever wonder what comic books sound like in Spanish? Well, watch this to find out!

# Blog

What's happening in the world of private tutoring?

## The Tortoise and the Hare at School

A recent survey question from the WyzAnt people got me thinking. The question asked how many hours of tutoring in took, on average, to help a student go up a letter grade. I found myself hesitating before answering, because I have done two different types of tutoring, with two very different results. In the end, I decided to answer based on my favorite type of tutoring: 7 to 10 hours. Let's... read more

My latest thoughts have again been inspired by one of those little surveys WyzAnt like to ask their tutors. This time the question was about what we, as tutors, think parents should ask of us before hiring us to help their children. A seemingly innocent, simple question which, nevertheless, left me thinking. To be honest, I hadn't really considered this before. I do a lot of the asking... read more

## My Teaching Philosophy

Over the many years I have been tutoring, I have time and again found myself hating the teachers that assign the homework and tests my students have to work on. Of course, this doesn't happen every time, or even most times, but it happens often enough that it prompted me to write this.   The reason I dislike these teachers so much is not related to how much work they create for... read more

### Karina's Hourly Rate

Hourly Fee: \$85.00

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Cancellation: 8 hours notice required

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### Background Check Status for Karina R.

Karina R. passed a background check on 1/17/14. The check was ordered by Karina through First Advantage. For more information, please review the background check information page.

After sending a message to Karina, you will be able to order a new background check for \$7.99. As part of your tutor selection process, we encourage you to run updated background checks. Please also review the safety tips for hiring tutors.