Stephanie Hirsch

Numerade Educator
Teacher

Biography

I love math, teaching, and indulging in curiosity. Math is awesome, but you only really get that when you understand it so I have spent the last 15+ years focused on improving math education both as an educator and as a curriculum designer. In addition to solving problems and puzzles, I am an avid baker and only sometimes geek out on the math and science involved in cookie making.

Education

Stephanie has not yet added their education credentials.

Educator Statistics

Numerade tutor for 3 years
186 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
Mastering Sequences and Series: An Introduction
Mastering Exponential and Logarithmic Functions: Your Ultimate Guide
Find the Whole Range of Numbers - Input and Output
Mastering Fractions and Mixed Numbers: A Comprehensive Guide
Discover the Wonders of Geometry: An Introduction to Shapes and Space
Master Algebra Basics: Your Introduction to Algebra
Mastering Quadratic Functions: Unlocking Their Power
Solving Systems of Equations and Inequalities: A Comprehensive Guide
Mastering Polynomials: Essential Tips and Tricks | [Brand Name]
Rational Functions: Understanding Their Properties and Applications
Mastering Matrices: An Introduction to the Fundamentals
Discover the Power of Ratio Proportions and Measurements
Maximize Your Results with our Percent-Based Solutions
Unlocking the Power of Functions: Boost Your Programming Skills
The Power of Integers: Unlocking Their Potential
Discover the Properties of Congruent Triangles | Exploring Geometry
Exploring Relationships Within Triangles
Discover the Power of Polygons: Unleash Your Creativity with Our Comprehensive Guide
Discover the Power of Similarity - Boost Your Results Today!

Stephanie's Textbook Answer Videos

00:53
Prealgebra

Translate and simplify.
Twice 575

Chapter 1: Whole Numbers
Section 5: Divide Whole Numbers
Stephanie Hirsch
02:15
Prealgebra

One number is 3 less than another number. Their sum is 65. Find the numbers.

Chapter 9: Math Models and Geometry
Section 7: Solve a Formula for a Specific Variable
Stephanie Hirsch
0:00
Algebra 2

A model for the height of an arrow shot into the air is $h(t)=-16 t^{2}+72 t+5$ where $t$ is time and $h$ is height. Without graphing, consider the function's graph.
a. What can you learn by finding the graph's intercept with the $h$ -axis?
b. What can you learn by finding the graph's intercept(s) with the $t$ -axis?

Chapter 5: Quadratic Equations And Functions
Section 1: Modeling Data with Quadratic Functions
Stephanie Hirsch
02:37
Algebra 2

Geometry A box has length $2 x+1$ units, width $x+4$ units, and height $x+3$ units. To build the box using $x^{3}, x^{2}, x,$ and unit $(1)$ blocks, how many of each will you need?

Chapter 6: Polynomials And Polynomial Functions
Section 2: Polynomials and Linear Factors
Stephanie Hirsch
01:05
Algebra 1 Common Core

In set-builder notation, how do you write the solutions of $5+d \leq 8 ?$

Chapter 3: Solving Inequalities
Section 5: Working With Sets
Stephanie Hirsch
1 2 3 4

Stephanie's Quick Ask Videos

01:22
Prealgebra

Ms. Garcia asked her students to use the scatterplot and trend line to predict the average miles per gallon of a vehicle weighing 2,250 pounds. Jim and Kim gave the following answers:

Jim said that a 2,250-pound vehicle would get about 28 miles per gallon.
Kim said that a 2,250-pound vehicle would get about 25 miles per gallon.

Whose answer best fits the data in the scatterplot? (4 points)
Explain how you know. (8 points)

Stephanie Hirsch
01:40
Geometry

How far is it across the lake?
Lake
4 km
6 km

Stephanie Hirsch
05:44
Prealgebra

A tunnel with a parabolic arch is 12m wide. If the height of the arch 4m from the left edge is 6m, can a truck that is 5m tall and 3.5m wide pass through the tunnel?

Stephanie Hirsch
01:09
Prealgebra

For the following exercises, simplify the rational expressions.
$$
\frac{m-12}{m^{2}-144}
$$

Stephanie Hirsch
02:09
Prealgebra

On a world globe, the distance between New York and Cairo, two cities that are actually 5619 mi apart, is 8.5 in. On this same globe, how far apart are Madrid and Rio de Janeiro, two cities that are actually $5045 mathrm{mi}$ apart? Round your answer to the nearest tenth.

Stephanie Hirsch
04:04
Algebra

The cost to produce bottled spring water is given by $C(x)=16 x-63,$ where $x$ is the number of thousands of bottles. The total income (revenue) from the sale of these bottles is given by the function $R(x)=-x^{2}+326 x-7463$. since profit $=$ revenue $-$ cost, the profit function must be $P(x)=-x^{2}+310 x-7400$ (verify).
how many bottles sold will produce the maximum profit? What is the maximum profit?

Stephanie Hirsch
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