Enable contrast version

Tutor profile: Justin K.

Inactive
Justin K.
Primary and Secondary School Mathematics (includes SAT and ACT Math)
Tutor Satisfaction Guarantee

Questions

Subject: Geometry

TutorMe
Question:

The United States Golf Association specifies that a golf ball must be spherical in shape and be no less than 42.7mm in diameter. What is the required volume of the golf ball (round to the nearest tenths)?

Inactive
Justin K.
Answer:

The formula for the volume of a sphere is V = 4/3 * pi * r^3 where r is the radius of the sphere. Since the diameter is given, to find the radius, use the following formula for diameter (d = 2r) and manipulate the variable to solve for r (r = d/2). Plug in 42.7mm for d, and you get 21.35 mm. From there, use the volume formula and plug 21.35 mm for r, and you get 40764.5 mm^3 (cubed). Remember for volume you add the cubed exponent to the final answer since the question asked for volume.

Subject: Basic Math

TutorMe
Question:

A recipe to serve six people calls for 2 1/4 cups of flour, 2/3 cups of sugar, and 1 tablespoon of vanilla extract. How much of each ingredient will you need if you make the recipe for three people?

Inactive
Justin K.
Answer:

The recipe is for six people, and 3 is one half of six, so you multiply each ingredient by 1/2 to get the amount of each ingredient, which is 1 1/8 cups of flour, 1/3 cups of sugar, and 1/2 tablespoon of vanilla extract.

Subject: Algebra

TutorMe
Question:

Please draw line graph of the form y = 2x - 3

Inactive
Justin K.
Answer:

You start by looking at the y intercept form, which is -3. You plot (0, -3) on a coordinate plane. Then, you look at the slope, which is 2, so you start at (0, -3) and you go up 2 and across right to get coordinate (1, -2). Using a straight edge, draw a line through both points and extend the line in both directions.

Contact tutor

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

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.