Noah Mekonnen

Numerade Educator
Tutor

Biography

I want to make sure that my students understand math

Education

Noah has not yet added their education credentials.

Educator Statistics

Numerade tutor for 4 years
67 Students Helped

Topics Covered

Unlocking the Power of Functions: Boost Your Programming Skills
Mastering Integration Techniques for Optimal Results
Mastering Partial Derivatives: Essential Techniques and Tips
Exploring the Functions of Multiple Variables
Stand Out with Differentiation Strategies | Boost Your Business
Mastering Integrals: Tips and Tricks for Calculus Success
Integration
Introduction to Combinatorics & Probability: Understanding the Basics
Functions
Exploring the World of Derivatives: A Comprehensive Guide
Introduction to Sequences and Series

Noah's Textbook Answer Videos

02:09
College Algebra

Use the following information. A state government gives property owners a tax rebate with the anticipation that each property owner will spend approximately $p \%$ of the rebate, and in turn each recipient of this amount will spend $p \%$ of what he or she receives, and so on. Economists refer to this exchange of money and its circulation within the economy as the "multiplier effect." The multiplier effect operates on the idea that the expenditures of one individual become the income of another individual. For the given tax rebate, find the total amount put back into the state's economy, assuming that this effect continues without end.
$$
\begin{aligned}
&5400\\
&75 \%
\end{aligned}
$$

Chapter 8: Sequences, Series, and Probability
Section 3: Geometric Sequences and Series
Noah Mekonnen
02:10
College Algebra

Use the following information. A state government gives property owners a tax rebate with the anticipation that each property owner will spend approximately $p \%$ of the rebate, and in turn each recipient of this amount will spend $p \%$ of what he or she receives, and so on. Economists refer to this exchange of money and its circulation within the economy as the "multiplier effect." The multiplier effect operates on the idea that the expenditures of one individual become the income of another individual. For the given tax rebate, find the total amount put back into the state's economy, assuming that this effect continues without end.
$$
\$ 600
$$$$
72.5 \%
$$

Chapter 8: Sequences, Series, and Probability
Section 3: Geometric Sequences and Series
Noah Mekonnen
02:11
College Algebra

Human blood is classified as either $\mathrm{Rh}+$ or $\mathrm{Rh}-.$ Blood is also classified by type: $\mathrm{A},$ if it contains an A antigen but not a $B$ antigen; $B$, if it contains a $B$ antigen but not an A antigen; AB, if it contains both A and B antigens; and $\mathrm{O}$, if it contains neither antigen. Draw a Venn diagram illustrating the various blood types. Based on this classification, how many different kinds of blood are there?

Chapter 10: Counting and Probability
Section 1: Counting
Noah Mekonnen
03:49
Precalculus: Graphs and Models, A Right Triangle Approach

Test algebraically whether the graph is symmetric with respect to the $x$ -axis, the $y$ -axis, and the origin. Then check your work graphically, if possible, using a graphing calculator.
$$3 x=|y|$$

Chapter 2: More on Functions
Section 4: Symmetry
Noah Mekonnen
09:12
Precalculus: Graphs and Models, A Right Triangle Approach

Test algebraically whether the graph is symmetric with respect to the $x$ -axis, the $y$ -axis, and the origin. Then check your work graphically, if possible, using a graphing calculator.
$$x y-x^{2}=3$$

Chapter 2: More on Functions
Section 4: Symmetry
Noah Mekonnen
1 2 3 4 5

Noah's Quick Ask Videos

02:52
Algebra

The area of a circle is directly proportional to the square of its radius. If the area of a circle with a radius of 2 ft is 12.56 ft², what is the area of a circle with a radius of 9 ft? (Round off your answer to the nearest hundredth.)

Noah Mekonnen
03:03
Precalculus

Suppose that the cost to a manufacturer of producing x units of a certain motorcycle is given by C(x) = 240x + 4000, where C(x) is in dollars.
(a) Find the marginal cost.
(b) Find the cost of producing 700 motorcycles.
(c) Use your answers in parts (a) and (b) to find the cost of producing 701 motorcycles.

Noah Mekonnen
02:05
Calculus 1 / AB

Are there power series that diverges everywhere? If so, exhibit
one. If not explain why it cannot happen.

Noah Mekonnen
06:04
Calculus 1 / AB

List corresponding features of the graphs of a function f, its first derivative f', and (an) antiderivative F. Describe a strategy whereby, given a plot showing the graphs of f, f', and F, you can determine which is which. Apply your strategy to identify the graphs A (blue), B (red) and C (green) as the graphs of a function f, its first derivative f', and (an) antiderivative F:
is the graph of the function f.
is the graph of the function's first derivative f'.
is the graph of an antiderivative of the function F.

Noah Mekonnen
08:09
Calculus 1 / AB

Consider the region bounded by y = 2 - 2x^2, y = k, and the y-axis, as shown below. Here, k is a positive constant smaller than 1.

Set up an integral for the area of the region using slices, as shown:

where the bounds of integration are:

Evaluate your integral to find the total area. Give an exact symbolic answer involving k.

Noah Mekonnen
22:14
Calculus 1 / AB

Let A = [1 2; 8 18], b1 = [-1; 0], b2 = [3; 16], b3 = [3; 22], and b4 = [6; 40].
a. Find A^-1 and use it solve the four equations Ax = b1, Ax = b2, Ax = b3, and Ax = b4.
b. The four equations in part (a) can be solved by the same set of operations, since the coefficient matrix is the same in each case. Solve the four equations in part (a) by row reducing the augmented matrix [A b1 b2 b3 b4].

a. Find A^-1. Select the correct choice below and, if necessary, fill in the answer box to complete your choice

A. The inverse matrix is A^-1 =
(Type an integer or simplified fraction for each matrix element.)
B. The matrix is not invertible.

Solve Ax = b1.
x =
(Type an integer or simplified fraction for each matrix element.)

Noah Mekonnen
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