Mathematics - 17 July 2007

2007-07-17 07:14:53 · 5 answers · asked by Anonymous

The amount of money that salesperson makes varies directly as the total amount of sales made. If the salesperson receives $7,500 for selling a house for $120,000, how much will he or she make if he/she sells a house for $150,000?

Your help would be very much appreciated. Thank you

2007-07-17 07:10:53 · 7 answers · asked by Anonymous

if p, r, and s are 3 different prime numbers greater than 2, and n=p times r times s, how many positive factors, incluiding 1 and n does n hav

the answer in the book says 8 but i hav no clue how to get it.
plz explain

2007-07-17 07:09:33 · 4 answers · asked by Anonymous

which # is the discriminant of a quadratic equation whose roots are real, unequal, and irrational?
a. 0
b.7
c.-5
d.4

plzzzz explain thanks

2007-07-17 07:03:59 · 5 answers · asked by ? 1

Convert all complex #'s to trigonometric form & simplify. Write answers in standard form.

2007-07-17 06:59:32 · 4 answers · asked by Deutschjoe 3

2007-07-17 06:59:18 · 6 answers · asked by jessica f 1

why does this ordered pair NOT represent a function? plzz explain thanks!

(3,-2) (3, -4) (4, -1) (4, -3)

2007-07-17 06:59:11 · 2 answers · asked by ? 1

2007-07-17 06:49:20 · 9 answers · asked by yuleydis77 1

2007-07-17 06:47:30 · 7 answers · asked by yuleydis77 1

2007-07-17 06:27:07 · 9 answers · asked by jessica f 1

The sand on a beach is being washed away by slowly by erosion. In 1870, a lighthouse was 1500
feet from the shoreline. In 1990, the lighthouse was only 150 feet from the shoreline. If the
erosion continues at this rate, how many more years will it be before the lighthouse is at the
shoreline? Write an equation that will tell you the distance of the lighthouse from the shore at
any year, where t is the year.

2007-07-17 06:00:24 · 10 answers · asked by beauty mirna 3

Q2 Colleges can purchase your name and mailing address from the Student Search Service after you
take the PSAT or SAT. (Unless you check the box to keep this information private.) Colleges pay
the Service $185 plus 28 cents for each name bought.
A. How much will a college pay for a list of 1000 names?
B. One college made an order in the amount worth over $48,000. How many names did the
college order?
C. The service had $17 million dollars in orders last year. If the orders came from 700 colleges,
how many names did all these colleges order? If there were 1.3 million students whose names
were available, what was the average number of mailings sent to each of those students?

2007-07-17 05:54:25 · 7 answers · asked by beauty mirna 3

x(y+2)+y(4-x)=9
x(y+3)+y(8-x)=14

x^2+y=1-x(1-x)
x(x+1)+2y=5-x(2-x)

2007-07-17 05:42:42 · 5 answers · asked by later120 1

2007-07-17 05:41:58 · 4 answers · asked by jessica f 1

y=2x+5
4x+y =2

2007-07-17 05:39:34 · 4 answers · asked by Anonymous

2007-07-17 05:25:38 · 9 answers · asked by dhsteiner01 1

2007-07-17 05:14:10 · 3 answers · asked by Anonymous

2007-07-17 05:02:44 · 4 answers · asked by Deutschjoe 3

1: -3x > -9

x > -3
x > 3
x < -3
x < 3


2: When dividing by a negative number, the direction of the inequality symbol MUST be reversed.
True
False
-
-


3: When multiplying by a negative number, the direction of the inequality symbol MUST be reversed.
True
False
-
-


4: -12x < 24
x > -2
x < -2
x < 24
x > 24


5: Note: ≥ is the greater than or equal to symbol and ≤ is the less than or equal to symbol.
-3x ≤ 9

x ≤ -3
x ≥ -3
x ≥ 3
x ≤ 3


6: 2x - 14 < 9x
x > -1/2
x < -1/2
x < -2
x > -2


7: -2 + 4x ≥ 4
x ≥ 3/2
x ≤ 3/2
x ≥ 2/3
x ≤ 2/3


8: 2x + 4 > x + 6
x > 4
x < 4
x > 2
x < 2

2007-07-17 04:54:35 · 6 answers · asked by fucking stupid ass 2

I can already do it in around 5 min. But truthfully the only point to really being able to know how to do is to be able to impress people with it haha. No one is willing to sit there for 5min and stare at you figure it out, it just loses the appeal. I know practice blah blah, but any specific moves or techniques or anything? any info, would be helpful... thx

2007-07-17 04:54:12 · 4 answers · asked by bob g 2

I'm taking this online course and I'm stuck on this one question.

2007-07-17 04:43:20 · 2 answers · asked by Anonymous

Find the general solution of this differential equation. t*(dy/dt) + 2*y = sin(t) for t > 0. Thanks.

2007-07-17 04:27:05 · 2 answers · asked by jimmycheesemaster 2

..I think the answer will be with the "log" symbol...

2007-07-17 04:19:12 · 11 answers · asked by Anonymous

I can't get the answer to this problem! well, i know how to do it, but the numbers are weird and my online hw program says it's wrong! I tried 2 diff answers and only have one try left. Help!

Solve this systems of equations by substitution:
3x+5y = -19
2x+7y= -31

it's not y = (131/11) and x = (-288/11) or ugly numbers like that cuz i input those and it was incorrect..but did anyone else get that?? thanks!

2007-07-17 04:18:56 · 10 answers · asked by jenny s 1

I need to find the integral of: x / radical(3 - x^4) dx

Thanks!

2007-07-17 04:05:41 · 3 answers · asked by Anonymous

8. A goodness-of-fit chi-squared of 5.950 with 5 degrees of freedom has an associated p-value of 0.311. This suggests



a. there is not sufficientevidence to reject the null hypothesis.

b. the null hypothesis should be rejected.

2007-07-17 04:03:57 · 3 answers · asked by Anonymous

3x^2 - 12x +12

2007-07-17 03:57:11 · 8 answers · asked by peaches 1

Alrighty people. Just trying to do my summer homework packet, and I'm experiencing major brain fartage. It would seem as though I should just add 20 and 5 in the parenthesis, but in the back of my brain, I'm thinking I should dustribute the 'negative one', like 20-1(20+5) to make it 20-20-5. Please help me!

2007-07-17 03:51:46 · 13 answers · asked by JM 2

I do. VERY VERY often.

2007-07-17 03:30:01 · 16 answers · asked by moon 111 2

integral of (sinx)^4*(cotx)^3

help please.

2007-07-17 03:21:26 · 2 answers · asked by jessica y 1