Today our new content was to rationalize denominators and to use the pythagorean theorem or shortcuts in context.
In all but 3rd period, we also wrote C-88 and C-89 into Geometric Truth. 89 needs no sketch. 88 needs a right triangle with sides a, b, and hypotenuse c.
Fill-in-the-blanks: C-88 is is equal to the square of the hypotenuse. C-89 is "then it will is a right triangle".
We also practiced acute vs obtuse in all but 3rd block.
The homework #8 is p 510:1-4,6,11-12. Also p 508: 9-12. Answers to p 510: : 1) the bat will not fit as the diagonal is less than 34 in. 2) 10 m 3) 4 hours (remember that distance = speed times time) 4) it slides 8 ft (sketch is essential), 6) $7200 11) r = 12
If you are in 3rd period, you do not do 11-12 on p 512. You do the 1-14 on Simplifying Expressions from the online Algebra Practice. (Follow instructions on next post down.)
#1 on p 510: you need the "3-D" Pythagorean Theorem:
Diagonal of the box ^ squared = a^2 + b^2 + c^2 where a, b, and c are the dimensions of the box. (did not teach this in 1st block).
A quiz on Pythagorean Theorem and the 30-60-90 and 45-45-90 shortcuts will be given on Fri-Mon, Feb 7-10, 20 pts. A bonus question will be the proof of the Pythagorean Theorem that we did for warm-up today (except in 3rd period). You will be given the first sketch, well labeled.
Test scores on similarity for 1st - 3rd will be posted tomorrow before school.
In all but 3rd period, we also wrote C-88 and C-89 into Geometric Truth. 89 needs no sketch. 88 needs a right triangle with sides a, b, and hypotenuse c.
Fill-in-the-blanks: C-88 is is equal to the square of the hypotenuse. C-89 is "then it will is a right triangle".
We also practiced acute vs obtuse in all but 3rd block.
The homework #8 is p 510:1-4,6,11-12. Also p 508: 9-12. Answers to p 510: : 1) the bat will not fit as the diagonal is less than 34 in. 2) 10 m 3) 4 hours (remember that distance = speed times time) 4) it slides 8 ft (sketch is essential), 6) $7200 11) r = 12
If you are in 3rd period, you do not do 11-12 on p 512. You do the 1-14 on Simplifying Expressions from the online Algebra Practice. (Follow instructions on next post down.)
#1 on p 510: you need the "3-D" Pythagorean Theorem:
Diagonal of the box ^ squared = a^2 + b^2 + c^2 where a, b, and c are the dimensions of the box. (did not teach this in 1st block).
A quiz on Pythagorean Theorem and the 30-60-90 and 45-45-90 shortcuts will be given on Fri-Mon, Feb 7-10, 20 pts. A bonus question will be the proof of the Pythagorean Theorem that we did for warm-up today (except in 3rd period). You will be given the first sketch, well labeled.
Test scores on similarity for 1st - 3rd will be posted tomorrow before school.