This Blog exists for the collective benefit of all 7th grade math students. While the posts are specific to Mr. Chamberlain's class, we welcome comments from everyone. The more specific your question (including your own attempts to answer it) the better.
EVEN MORE WELCOME ARE ANSWERS FROM FELLOW STUDENTS. BLOG ON!
Total Pageviews
6,514
Friday, October 29, 2010
hw #2-7 Powers & Exponents
pg 88-89 #3-36 mult of 3
You will be having a unit test soon... you can ask questions here about anything in this unit...
Did anyone get 405 for #36 on the hw because it doesn't give the answer and I got the wrong answer on #33, but then I figured it out and fixed it. maggie
The answer to #33 is -360 so yourright you can also look in the back of the book to check your answers. We didn't have to do #22 last class because we were only supposed to do the odds. For #21you just had to divide 12 by o.5 because you had to use the d=rt formula. So you were trying to solve for r because they already gave you the d and t. Maggie
Did anyone get 405 for #36 on the hw because it doesn't give the answer and I got the wrong answer on #33, but then I figured it out and fixed it.
ReplyDeletemaggie
On #36 I also got 405 so it is probably the right answer. Can anybody also tell me if the answer for #33 is -360.
ReplyDeleteAre the formulas given on the test or do we have to memorize them.
For page 84 #21 and 22 I did not understand the problem at all and it is not in the answer list.
Marc
The answer to #33 is -360 so yourright you can also look in the back of the book to check your answers. We didn't have to do #22 last class because we were only supposed to do the odds. For #21you just had to divide 12 by o.5 because you had to use the d=rt formula. So you were trying to solve for r because they already gave you the d and t.
ReplyDeleteMaggie
Yes, Maggie, you are correct.
ReplyDeleteI agree with you Marc... I don't like the way they worded #21-22. What they meant (and should have said) was this:
Use the formula d=rt for #21 & 22
#21) Find the rate r (in miles per hour or mph) when d=12 miles and t=0.5 h
#22) Find t (in hours) when d=120km and r=45 km/hr
Let me know if that makes more sense.
Mr. C.
P.S. Since no one else has questions, I guess there is no need for me to review any homework?
how do you figure out number 18?
ReplyDeletenever mind i figured it out number 18. this post is for the post above this one.
ReplyDeleteThe bigger question is the comparison between #17 & #18. The question is:
ReplyDelete-2^5 =? (-2)^5
... and another question #23 & #24
-3^4 =? (-3)^4
The negative sign is essentially a multiplier. In other words, -2 could be written as -1*2 ... -3 could be written as -1*3 and so on.
Does this info help you or CONFUSE YOU even more? As I said, we will examine both questions (AND MORE) in class tomorrow... WHAT FUN!!
i was not here on wed. i did pg 94-95 3-18 21-36 mult 3 luke told me there was more if so please tell me what it is
ReplyDeleteI suggested that if you finished hw #2-8 you should take a GOOD LONG LOOK at the UNIT REVIEW homework, since you have a UNIT TEST on Thursday...
ReplyDeletehw#2-9: Due Thurs Nov 11
pg 98 #1-10
pg 100 #1-61 Odd