Enable contrast version

Tutor profile: Ben C.

Inactive
Ben C.
Software Engineer at Microsoft
Tutor Satisfaction Guarantee

Questions

Subject: Spanish

TutorMe
Question:

Fill in the blanks: Mi hermana siempre se ___ enojada cuando ella __ que caminar con el perro.

Inactive
Ben C.
Answer:

Mi hermana siempre se __pone__ enojada cuando ella _tiene_ que caminar con el perro. (My sister always gets mad when she has to walk the dog).

Subject: Chemistry

TutorMe
Question:

Calculate the molar mass of $$H_2O$$

Inactive
Ben C.
Answer:

Hydrogen has a molar mass of 1, and Oxygen has a molar mass of 16. Therefore, the molar mass is $$1*16 + 2*1 = 18$$.

Subject: Calculus

TutorMe
Question:

Evaluate the following derivative at $$x=2$$ $$ \frac{\partial }{\partial x} (5x^3 + 4x^2 - 2x - 7)$$

Inactive
Ben C.
Answer:

First we take the derivative of the expression using the power rule: $$ \frac{\partial }{\partial x} (5x^3 + 4x^2 - 2x - 7) = 3*5x^{3-1} + 2*4x^{2-1} - 2*1x^{1-1} - 0 = 15x^2 + 8x - 2$$ Then we evaluate it for $$x=2$$: $$15(2^2) + 8(2) - 2 = 15(4) + 16 - 2 = 60 + 16 - 2 = 74$$

Contact tutor

Send a message explaining your
needs and Ben will reply soon.
Contact Ben

Request lesson

Ready now? Request a lesson.
Start Lesson

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 Lesson" 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.