by DaleCallahan | Jun 4, 2019 | Algebra, Algebra Chapter 10
Error in Solutions Manual The Solutions Manual has the answer from the older version of the book (which used a flag of 104 x 235. Flags have grown since then. 😉) Just FYI – the older flag was flown in Detroit on the side of the J.L. Hudson Store – which no...
by DaleCallahan | May 23, 2019 | Geometry, Geometry Chapter 11, Geometry Tests
Question from Anya Course: Geometry Chapter/Lesson/Problem11 test7b Issue: I’m supposed to find Angle APM. To find the angle, I used tan APM=20/70, which gives 15.9 degrees. The solutions manual used sin APM=20/70, which gives 16.6 degrees. Sine is...
by DaleCallahan | May 3, 2019 | Algebra, Algebra Chapter 5
Ch5.6 #15 As before – all are similar so I will pick the harder one. Givens AB = CD AB = 9(x-2) CD = x + 3(x+5) Therefore, 9(x-2) = x + 3(x+5) Now multiply out and solve 9x – 18 = x + 3x + 15 9x – x – 3x = 15 + 18 5x = 33 x = 6.6 Now go back and find the...
by DaleCallahan | May 3, 2019 | Algebra, Algebra Chapter 5
Now let’s look at Ch 5.6 #14. Parts a-c are similar – so will do part c since the harder. Area = x + 20 = (x-1)4 > I am just stating all things that are equal based on the given. x+20 = (x-1)4 x+20 = 4x -4 > multiplied out 20 + 4 = 4x – x > moved similar...
by DaleCallahan | May 3, 2019 | Algebra, Algebra Chapter 5
For problem 5.6, parts a-d are all pretty much the same. Here I will do part d) since a hair more complex. The steps the same for the others. Since AB = CD, we can substitute the following AB is x + 6(x+2) CD is 2(x+10) To get x + 6(x+2) = 2(x+10) So to find the...
