Leslie Bain

Numerade Educator

Teacher

Biography

I have enjoyed teaching math for over 15 years. My goal is to help my students understand math problems by breaking them down into clear and concise steps.

Education

Leslie has not yet added their education credentials.

Educator Statistics

Numerade tutor for 4 years

20 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

Leslie's Textbook Answer Videos

1

Leslie's Quick Ask Videos

A substance has a half-life of 2.045 minutes. If the initial amount of the substance was 132.8 grams, how many half-lives will have passed before the substance decays to 4.15 grams? What is the total time of decay?
It will take ___ half-lives to decay to 4.15 grams.
The total time of decay is ___ minutes.

Astronomers use the distance modulus function M(r) = 5 log r - 5, where M is the distance modulus and r is the distance of a star from Earth in parsecs. (One parsec is approximately 1.92 x 10^13 miles, or approximately 20 trillion miles.) Use this function to answer the question below. Round to the nearest tenth. The distance modulus of "Star Alpha" is -1.41. How many parsecs from Earth is this star?

thoughtful 12 tokens seeds: []Good optics.

Good

Newton's Law of Gravitation says that two objects with masses m1 and m2 attract each other with a force F that is jointly proportional to their masses and inversely proportional to the square of the distance r between the objects. Newton discovered that the constant of variation is 6.67 × 10^(-11). In a small laboratory experiment, two 600 kg masses are separated by 0.5 meters. What would the gravitational force between the objects be? Force = ___ Newtons.

(b) Find all the vertical asymptotes of f(x), showing all
working.
(c) Find the horizontal asymptote of f(x) if it exists, showing
all working

he concentration C of a drug in a patient's
bloodstream t hours after injection is given
by
C(t) =
6t
6 + t2
What happens to the concentration of the drug
as t increases?

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