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# How many of each kind of ticket were sold?

There were 305 tickets sold for a basketball game. The activity cardholders' tickets cost \$1.25 and the non-cardholders' tickets cost \$2.50. The total amount of money collected was \$578.75. How many...

# Be Like Water...

Humans have a tremendous capacity to learn and adapt. However, we consistently build barriers that hinder our natural ability to change and grow. Many people, regardless of age, perceive themselves as not being talented enough to excel at math and science. They view math and science as the realms in which only scientists, engineers, mathematicians, and geniuses truly soar. Nothing could... read more

# Summer Tutoring

SUMMER OPPORTUNITIES Now that students, teachers, parents and tutors have had a chance to catch their breath from final exams, it's time to make use of the weeks we have before school starts back. Consider all that could be accomplished in the next few weeks: Areas of math that students NEVER REALLY GRASPED could be fully explained. This could be elementary skills like adding fractions,... read more

# How to maximize your mathematics tutoring experience

Hi math students :) When preparing for a mathematics tutoring session, try to have the following things at hand... Textbook (online or e-text) Syllabus, assignment, tips/hints/suggestions, answer sheet/key Class notes Pencils, pens, erasers, paper (graph paper, ruler, protractor) All necessary formulas, laws, tables, constants, etc. Calculator that you will use on tests Do... read more

# cannot understand how to connect g(x) = (x-2)^2 to the correct graph

I'm trying to understand matching functions to their graphs.  I've been given pictures of graphs and four functions.  I am suppose to match each function to the correct graph.

Show that the set V of all 2x2 upper triangular matrices is asubspace of M22 I need to turn this in tonight by 12 pm. Please, help!

# Find the domain and codomain and determine whether T is linear

w1=5x1-x2+x3 w2= -x1+x2+7x3 w3= 2x1-4x2-x3 My solution so far: From the system I can tell that it is R3, so domain is R3, since there w1, w2, w3 I can tell that codomain is...

# Determine whether w is in the range of the linear operator T

T:R3 - R3: T (x,y,z) = (2x-y, x+z, y-z); w= (3,3,0) Here is my solution: T (3,3,0) = (2x3-3, 3+0, 3-0) T (3,3,0) = (3, 3, 3)  What I am doing wrong? And how to explain...

# Why must the determinant of a matrix with integer entries be an integer?

My answer would be because it involves only addition, subtractions and multiplications, no divisions. But I am not 100%sure.

# what is a straight edge

a sraight line is a line that has a one end point and a arrow that keeps going the other direction

# Linear Algebra

. Indicate whether the statement is true or false. Justify your answer. (a) If Ax=b has infinitely many solutions, then so does Ax=0 (b) If Ax=b is inconsistent, then Ax=0 has only the trivial...

# Practice makes Perfect

I used to be a great math student. It would come naturally me, I never really had to "study" for the tests to get my A's. This all took a turn when I took PreCalculus in Highschool. I remember getting my first test back and seeing a 67/100. I was horrified! I was in shock! When my mother found out, she repeated her famous line "Practice makes Perfect!" She made me sit down with my textbook... read more

# Have you tried Wolfram Alpha? What are you waiting for?

If you get stuck doing homework problems often, have a hard time doing your classwork, or sometimes you just can't follow your lecture notes try going to Wolfram Alpha. Wolfram Alpha is a computational knowledge engine that is designed to handle mathematical problems and computation, and scientific problems. It has its limitations but it is a really awesome tool that gives a lot of detail when... read more

# The New School Year Is Upon Us!

The new school year beckons - be it middle or high school, college or post graduate study. Fall college visits, applications and essays are also just around the corner. Get a jump on what you or your child may need in terms of support for specific academic subjects, computer skills, standardized tests (SSAT, ISEE, PSAT, SAT, ACT, ASVAB, GRE, etc.). I look forward to continuing my track record... read more

# Bridging the Summer Gap

It is no surprise that students lose some of their edge for education over the summer. After all the saying goes, "if you don't use it, you lose it." Summer is a great time to prepare students for the next school year. Tutoring can provide a means to not only stop the loss but also allow students to gain valuable skills for the next year. Imagine the edge your student could have in next years'... read more

# Linear First Order Differential Equations, November 8th 2009

An online class on solving linear, first-order differential equations (both homogeneous and nonhomogeneous).