- Sun Jan 01, 2012 3:45 am
- Forum: Beginning Algebra
- Topic: question!! i think this is algebra...
- Replies:
**3** - Views:
**2284**

jamie had x dollars in the bank. he took out 1/2 of it. then he took out 1/3 of the remaining sum to get something else. what fraction of the original amount remained in his account? i did 1-(1/2-1/3) Does the exercise say that "then he took one-third of the original sum", or that "t...

- Sat Dec 31, 2011 9:02 am
- Forum: Beginning Algebra
- Topic: 1st term is 50; each sub. is 1/2 prev. term if even, else...
- Replies:
**1** - Views:
**1119**

The first term in a series of numbers is 50. Each subsequent term is 1/2 the term before it if it was even. or 1/2 rounded up to the next whole number if it is odd. What is the 3rd number in this sequence? a)13 b)24 c)30 d)40 i dont get this. so, the second number is 45, and the third is 1/2 x 45= 2...

- Sat Dec 31, 2011 8:59 am
- Forum: Beginning Algebra
- Topic: 1/4 of students failed final exam; of rest, 1/3 scored A
- Replies:
**2** - Views:
**1622**

In Mr. Joe's class, 1/4 of the students failed the final exam. Of the remaining class, 1/3 scored an A. What fraction of the class passed but didnt get an A? a)1/4 b)5/12 c)1/2 d)7/12 i got c) because I made the teacher have 100 kids, and 1/4 = 25 failed. then 75 (remaining) x 1/3= 25 got an A. The ...

- Sat Dec 31, 2011 8:53 am
- Forum: Beginning Algebra
- Topic: Quantative Reasoning: p^2+q^2=25, 2pq=10, find (p-q)^2
- Replies:
**1** - Views:
**3642**

if p^{2}+q^{2}= 25 and 2pq=10, what is (p-q)^{2}?

a)250

b)100

c)50

d) 5

i dont get this...the answer is b) and i guessed c).

i only know that pq=5 and possible values for the p and q in p^{2}+q^{2}= 25 are p=4 and q=3 or vice versa.

a)250

b)100

c)50

d) 5

i dont get this...the answer is b) and i guessed c).

i only know that pq=5 and possible values for the p and q in p

- Sat Dec 31, 2011 8:49 am
- Forum: Pre-Algebra
- Topic: chumway motors discounts the car cost by 10% and then...
- Replies:
**1** - Views:
**1785**

chumway motors discounts the car cost by 10% and then it takes off 20% of the new price. What discount does this represent from the original price of the car? a) 28% b) 30% c) 40% d) 72% i got d) because i set a fake price($1000)...and then did the 10%(new price: $900) discount and then the 20%(np: ...

- Sat Dec 31, 2011 8:45 am
- Forum: Beginning Algebra
- Topic: question!! i think this is algebra...
- Replies:
**3** - Views:
**2284**

jamie had x dollars in the bank. he took out 1/2 of it. then he took out 1/3 of the remaining sum to get something else. what fraction of the original amount remained in his account? a)1/6 b)1/5 c)1/4 d)1/3 ummm so i did 1-(1/2-1/3) which i got 1/6...a) my answer sheet says d) (this is from a isee t...

- Thu Dec 15, 2011 5:53 pm
- Forum: Beginning Algebra
- Topic: finding restrictions: 4a^2-b^2-2a+b / (2a+b)^2-1
- Replies:
**1** - Views:
**1777**

ok i understand how to solve the problem, but i dont get how to get the restrictions. i have to solve this problem and then put restrictions on it 4a^2-b^2-2a+b / (2a+b)^2-1 the answer is 2a+b / 2a+b+1 but on my answer sheet the restrictions also says b is not equal to 1-2a and -(2a+1) my teacher al...

- Sat Oct 29, 2011 7:46 pm
- Forum: Beginning Algebra
- Topic: factoring trinomials: factor xy2+ 2xy- 3x-y2+2y-1
- Replies:
**1** - Views:
**1926**

please help me factor this

xy^{2}+ 2xy- 3x-y^{2}+2y-1

xy