mcetner
eNotes EducatorAchievements
1
Educator Level
17
Answers Posted
2
Answers Bonused
About
Earned Badges

eNotes Educator
This badge is awarded to all eNotes Educators. Only official Educators can answer students' questions on our site. Educators are teachers, professional researchers, and scholars who apply to our...
Recent Activity

Answered a Question in Math
Step 1: define variables: let x = the number of trips the 10 ton truck makes, and let y = the number of trips the 12 ton truck makes. Step 2: write equations: total number of trips: x + y = 20. ... 
Answered a Question in Math
Since you know the probability of drawing a red ball is 7/15, and you know the amount of balls in the box is 30, then you can make a proportion: probability 7/15 = x/30. Solve for x by... 
Answered a Question in Math
The easiest way to figure out this type of question without being confused is to use dimensional analysis. That means when you divide, the units that you don't want will cancel, and what you want... 
Answered a Question in Math
Another way to answer this question is that you know any linear function can always be written y = mx + b, where m is the slope. Find m first, (4  3)/(2  1)=1/3. Then plug in one point to solve... 
Answered a Question in Math
The slope of the tangent line means derivative. So, take the derivative of y = cosx  2, and get dy/dx = sinx. Evaluate at pi/2, and sin(pi/2) = 1. So the slope of the tangent line at that...
Showing 15 of 17