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## Teodor M.'s Resources

The Domain is going to be ALL Real Numbers less what x cannot be in the denominator. So, set the denominator equal to zero and solve.   (x^2-1) is a difference of two squares and factors to: (x-1) (x+1) therefore, x cannot = 1   In Interval notation you find:   D:...

(4200)(5/8) = 2625   Hope that helps.   Teodor M.

8,046.72 meters converts to 5 Mi.   This can be found as follows:                                               (8046...

Change everything into 10ths as follows:   1/10 + 2.5/10 = 3.5/10 of an hour to make one bracelet. Then change to 20ths so the numerator is a whole number. Divide your time available by the time it takes to make one.                                                                 ...

Another way to look at this problem is that it is a special case 3-4-5 triangle at a 6-8-10 measurement. So, expect special cases in your math. This combination of sides comes up a lot and is the basis for much of the beauty in nature including the equal angular (Fibonacci) spiral.

3m/s is the correct for the average speed which is derived from the formula (Vf-Vi)/t or dV/dt

Last year I started back at college to complete the degree I always wished I had completed 25 years ago--a degree in Electrical Engineering. And, as a student I faced all the same obstacles high school graduates face--how to pay for it?   That's when I went ballistic on every website with any information on scholarships for people in my category: non-traditional; STEM; science and... read more

This post is all about #mentoring. There is no excuse for any student to ever say, "I can't!" As a mentor, I lead my kids by example. I am back in college for the degree I always wanted to get but didn't. Someday, I will be an engineer! That just gets me excited to be alive and be a teacher. But, I'm 41. I old right? 25 years out of school? I can't do it.   Well, I hear... read more

Save over \$38,000 on college? How you may ask? Well, in my neck of the woods, I'm not just your average Wyzant Tutor of 5 years, I'm also a College Career Guidance Tutor. For many of my 11th and 12th grade students I suggest 3 important methods to save parents tens of thousands of dollars on college tuition, with the helpful byproduct of completing college a year early! And, who would want that... read more

x^2 -4x -5   We know it is a parabola   we know it faces up   we know the zeros or factors are "-" and a "+" and the "-" is greater   it factors to: (x-5)(x+1)   the zeros are x=5, -1 this is where...

6.3 * 7.8 are both 2 significant digits and 6.3 is more than 6 7.8 in almost 8 meaning it is over 48. The answer is 49.

As a fraction 19/5 is in its simplest form, however if you are looking for a mixed fraction it is 3 4/5

One of the most important questions a parent can ask a prospective tutor is "How many years have you been tutoring this subject?". Tutors who have been teaching a subject for years, who have taught it in a classroom, such as I have, and have taught their subject, such as Chemistry on the AP level as I do, separates a college prep or college-level instructor from an after-school tutor... read more

Many of my students know that I am an avid scuba diver. One important byproduct of that is the intense use of math and science especially chemistry and physics that we have to use in diving. From a very early age, I have had a great ability in mathematics and the sciences. Chemistry was a strong point for me in high school and I excelled in Advanced Chemistry and Organic Chemistry. Today I work... read more

The most amazing experience my students have is when they get to France on vacation, or fly to Montreal on business and they get off the plane into a whole another world... and then they speak the French I taught them in our one-on-one lessons and they are not only understood but fluent in French! That's not a dream but a reality when you are taught to speak the language properly! Books teach... read more