Katy U.

Experienced STEM Tutor

Tutor Satisfaction Guarantee

SAT II Mathematics Level 2

TutorMe

Question:

What is an equation of a line perpendicular to the line 2y = 4x + 9 ?

Katy U.

Answer:

The first thing to do is to rearrange the equation into a y= form. This results in y = 2x + 4.5 A perpendicular line has a slope that is the negative reciprocal of the slope of the line. This means that the slope of the line is -0.5 Thus, any line with the slope -0.5 will be perpendicular to the line in the question. For example y = -0.5x + 3

Pre-Calculus

TutorMe

Question:

tan(π/4) = 1 tan(π/6) = √3 / 3 What is the tan (π/12) ?

Katy U.

Answer:

Using the angle-difference identity for tangent, we can see that tan ((π/4)-(π/6)) = tan (π/12). This means that tan (π/12) = (tan(π/4) - tan(π/6)) / (1 + tan(π/4)*tan(π/6)) = (1 - √3 / 3) / (1 + 1*√3 / 3) =(3-√3) / (3 + √3) =0.2680

Basic Chemistry

TutorMe

Question:

Describe the type of bonding exhibited by NaCl.

Katy U.

Answer:

NaCl exhibits ionic bonding. This is an electrostatic attraction between two oppositely charged ions. In this case, Na+ is a positive ion, or cation, and Cl- is a negative ion, or anion.

Send a message explaining your

needs and Katy will reply soon.

needs and Katy will reply soon.

Contact Katy

Ready now? Request a lesson.

Start Session

FAQs

What is a lesson?

A lesson is virtual lesson space on our platform where you and a tutor can communicate.
You'll have the option to communicate using video/audio as well as text chat.
You can also upload documents, edit papers in real time and use our cutting-edge virtual whiteboard.

How do I begin a lesson?

If the tutor is currently online, you can click the "Start Session" button above.
If they are offline, you can always send them a message to schedule a lesson.

Who are TutorMe tutors?

Many of our tutors are current college students or recent graduates of top-tier universities
like MIT, Harvard and USC.
TutorMe has thousands of top-quality tutors available to work with you.