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:
(4200)(5/8) = 2625
Hope that helps.
8,046.72 meters converts to 5 Mi.
This can be found as follows:
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...
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...
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...
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...
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...
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...