News & Resources

Algebra Test 4 #9d

Colleen wrote: I believe I found an error in the answer key in the 5th Ed. Algebra 1 Teachers Guide.  On Test 4, #9.d., the answer in the key (p. 88) should be (x - y squared)squared, shouldn't it, rather than (x + y squared) squared?    Dr. Callahan answered: You are...

Algebra Course Description for Transcript

Algebra Course Description for Transcript

If you are looking for details for a transcript for Elementary Algebra by Jacobs course, here is the description you need. Elementary Algebra (this course is the equivalent of an Algebra I course) provides a formal development of the algebraic skills and concepts...

Geometry Midterm #74

Question from Kerry: The answer key for the Geometry Midterm Review #74 says the answer is square root of 80, but shouldn't it be the square root of 52?  It says (4-0) squared + (8-2)squared = 16+64, but it should be = 16+36, shouldn't it? Answer from Dr. Callahan:...

Geometry Ch11.3 #38-41

Hannah asked: I am doing Harold Jacobs Geometry,  I am on chapter 11 lesson 3.  I got to problems 39-41 and got stuck.   Dr Callahan Answered: Let us start at #38. We can see that <ABC = 120 so <ADB = 30. Therefore we know AB = BD based on Theorem 10 page 159....

Geometry Ch5.1 #44

Cathy asked: Need some help with this problem - Geometry Ch. 5.1 #44:The answer key for this question states that we can't draw any definite conclusion about whether angle 3 and 4 are vertical angles.  We previously proved angles 3 and 4 to be equal; based on the...

Let’s Learn Together! 

Nulla quis lorem ut libero malesuada feugiat. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vivamus suscipit tortor eget felis porttitor volutpat. Donec rutrum congue leo eget malesuada. Proin eget tortor risus.

(134) 908-4622

0