Katie Sullivan

Case Western Reserve University
Teacher

Biography

Teaching math is a passion. I worked as an engineer in the business world before entering the classroom. My background allows me to bring real world perspective to my teaching.

Education

BS Physics
Case Western Reserve University

Educator Statistics

Numerade tutor for 4 years
148 Students Helped

Topics Covered

The Power of Algebraic Language: Unlocking Mathematical Potential
Mastering Equations and Inequalities: Your Guide to Mathematical Success
Understanding Complex Numbers: A Comprehensive Guide

Katie's Textbook Answer Videos

1

Katie's Quick Ask Videos

03:01
Algebra and Trigonometry

A plane is flying within sight of the Gateway Arch in St. Louis, Missouri, at an elevation of 30,000 ft. The pilot would like to estimate her distance from the Gateway Arch. She finds that the angle of depression to a point on the ground below the arch is 19°. (Round your answers to the nearest foot.)
(a) What is the distance between the plane and the base of the arch?
(b) What is the distance between a point on the ground directly below the plane and the base of the arch?

Katie Sullivan
02:34
Algebra

You call two exterminator companies to compare prices. The All-Right Termite Exterminator company charges $50 to come to your house plus $45 an hour. Termites R Us charges $100 to come to your house plus $32.50 an hour.

(4 pts) Create the equation modeling the cost for the All-Right Termite Exterminator company to exterminate the termites. Let C = the amount that All-Right charges and let h be the number of hours on the job.

(4 pts) Create the equation modeling the cost for the Termites R Us company to exterminate the termites. Let C = the amount that Termites R Us charges and let h be the number of hours on the job.

Under what conditions is All-Right Termite Exterminator a better deal than Termites R Us? Explain.

(5 pts) Under what conditions is All-Right Termite Exterminator the same deal as Termites R Us? Explain.

Katie Sullivan
02:40
Algebra

The resistance, R, of a wire varies directly as its length and inversely as the square of its diameter. If the resistance of a wire 100 ft long with a diameter of 0.21 inches is 10183 ohms, what is the resistance of 2700 ft of the same type of wire with a diameter of 0.08 inches? (Leave k in fraction form or round to at least 3 decimal places. Round off your final answer to the nearest hundredth.)

Katie Sullivan
01:53
Geometry

Choose a shape that has some symmetry and that we can see in the
real world. Describe all of the symmetries that your chosen
shape has, and then discuss where we can see or find this shape and
how it is used. Why do you think that this particular shape
appears or is used instead of a different shape?

Katie Sullivan
02:05
Geometry

When a small rectangular pool is drained, the dimensions are 120 in long, 80 in wide, and 100 in tall. Using your knowledge of 1D, 2D, and 3D shapes, answer these questions.

a. Draw a picture of this pool and label all of the 2-dimensional measurements.

b. Find how many cubic feet of water the pool can hold. Show your work.

Katie Sullivan
01:17
Algebra

900 bags of onions were purchased at $2.53 per bag. The desired
markup is 47% based on selling price, but 20% spoilage is expected.
What should the selling price per bag be (in $ per bag)? (Round
your answer to the nearest cent.)

Katie Sullivan
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