Enable contrast version

Tutor profile: Stefanie D.

Inactive
Stefanie D.
High School Math Teacher
Tutor Satisfaction Guarantee

Questions

Subject: Pre-Calculus

TutorMe
Question:

Use the trigonometric formulas to find the exact value of the expression. sin⁡〖40°〗 cos⁡〖10°〗- cos⁡〖40°〗 sin⁡〖10°〗

Inactive
Stefanie D.
Answer:

For the formula sin(A - B) = sinAcosB - cosAsinB we are working backwards from the expanded version sinAcosB - cosAsinB to the condensed version sin(A - B). In the problem A = 40 and B = 10 so we get sin(40 - 10) which becomes sin(30) and sin(30) is asking for y coordinate on the unit circle at the angle 30 degrees which is 1/2 Solution: 1/2

Subject: Geometry

TutorMe
Question:

In a 30-60-90 triangle, the length of the hypotenuse is 6. What is the length of the shortest side

Inactive
Stefanie D.
Answer:

The shortest side (the side opposite from the 30 degree angle) is half the length of the hypotenuse (the side across from the 90 degree angle). Therefore, the shortest side is 6/2 = 3

Subject: Algebra

TutorMe
Question:

For a volleyball match, 250 tickets were sold. Student tickets cost $5 each, and adult tickets cost $7 each. A total $1450 was collected from ticket sales. How many adult tickets were sold? How many student tickets were sold?

Inactive
Stefanie D.
Answer:

Define your variables a = number of adult tickets sold and s = number of student tickets sold. Setup a system of equations modeling the information in the problem. a + s = 250 7a + 5s = 1450 Solve the system by substitution or elimination method a + s = 250 -5a - 5s = -1250 2a = 200 a = 100 7a + 5s = 1450 7a + 5s = 1450 If there are a total of 250 tickets and 100 of them are adult tickets, then 250-100 = 150 student tickets. Solution: 100 adult tickets and 150 student tickets

Contact tutor

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

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.
BEST IN CLASS SINCE 2015
TutorMe homepage
Made in California by Zovio
© 2013 - 2021 TutorMe, LLC
High Contrast Mode
On
Off