Mathematics - 19 September 2007

5x-18=3x+2

i suck at this help plz

2007-09-19 14:05:50 · 8 answers · asked by Anonymous

Solve each system of equations. If the system has no solution, say that it is inconsistent

{3x - 6y = 2
{5x + 4y = 1

Can you please help with this?

2007-09-19 14:04:36 · 10 answers · asked by w s 3

1in= 2.54cm
12in= 1ft
1yard=36in
1m= 39.37in

and its supposed to be a 2-step english to metric conversion and are suppossed to use the guessing method (not actually guessing.... its a real method)

2007-09-19 14:04:34 · 9 answers · asked by Pheobe Halliwell 1

solve the inequality and express the solutions in terms of intervals.
-2< I x I <4

I know the answer should be (-4, 4) but I don't know how they got that answer. Please help!

2007-09-19 13:58:38 · 4 answers · asked by evie ♥'s her Dodgers 5

elisa sold 110 tickets for the football game. Each adult ticket costs $2.50 and each student ticket costs $1.10. elisa collected $212. how many of each kind of ticket did she sell? use a guess and check table and write an equation to solve.

2007-09-19 13:57:28 · 6 answers · asked by Anonymous

Please include some examples = )

2007-09-19 13:54:02 · 5 answers · asked by Abiku 6

again i need help isolating x. i tried the exponent laws but i got stuck after this line

log x^3 = log 1728 - log64

2007-09-19 13:52:45 · 1 answers · asked by C.L. ~Raptors~ 4

It takes a couple four hours to row 28 miles with the river current. If it takes them 7 hours to cover the same distance when rowing against the current, find the speed of the river current.

2007-09-19 13:52:35 · 5 answers · asked by Anonymous

I need help with the following questions. I am terrible at math and I want to check my answers. I NEED a good grade on this test!!
1) If you subtract 13 times a number from 3 times its square, the result is 10. Translate into an equations and solve.

2)A photograph is 7in long & 5in wide. It is surrounded by a border of uniform width. If the area of the border is 64 sq in, what is the width of the border?

3) Factor this completely: a*2 + 14ab + 45b*2
(the * means the next number is the exponent)

4) Facotr completely: x*3 + 64

Factor completely: 5x*4 + 18x*2 + 9

THANK YOU FOR ANY AND ALL HELP!!

2007-09-19 13:50:27 · 2 answers · asked by Nikki M 2

A blue light flashes every 2 minutes.
A white light flashes every 3 minutes.
At 8 pm they flash together

a) At what time will this happen again?
b) The lights are adjusted at 9:30 pm. at which they flashed together. Now the blue light flashes every 6 minutes and the white light flashes every 10 minutes. At what time will they next flash together?

2007-09-19 13:46:21 · 2 answers · asked by NinjaX 2

help me solve this..it says "use elimination"

2007-09-19 13:44:16 · 10 answers · asked by Anonymous

2007-09-19 13:42:26 · 12 answers · asked by Gavin J 2

ppleazzzz


A dime is about 1mm thick.How many dimes are in a stack of 1 cm high?




Flying at an avreage speed of 525 miles per hour, how far can a passenger fly in 2,3,and 4 hours?



A whole pizza was cut into eights.If hector eats3/8 of this pizza and rita eats 1/4 of the pizza,then what fraction of the pizza remains?


the ceiling fan company sold 7400 fans this year and 6900 fans lastyar.How many more fans did they sell this year compared to last yea?


write the prime factorization between of 120


list all prime numbers between 70 and 90

2007-09-19 13:37:49 · 3 answers · asked by Anonymous

Solve the equation to find the unknown value

Rudy bought a can of three tennis balls and a new grip for his racquet. The grip cost $7.49. The total of the items was $9.38 i n all. How much did each tennis ball cost?

Ya I know it's $0.63 each but I need to know what the equation is o_O...help? my heads too lazy

2007-09-19 13:31:35 · 8 answers · asked by bilbobagginz 3

I'm in Honors Pre-Calculus and we're going over some things we learned in Algebra 2. I'm having a lot of trouble gripping it (just like I did in Algebra 2). I'm going over recursive formula and "U sub 1" is how it's described in the book. I have an example from a previous quiz that I bombed.. could someone explain how recursive formula works and go step by step through this problem with me?

Problem #6:
Dante deposited $10,000 into an account with an annual interest rate of 3.75%, compounded quarterly. He plans to deposit $750 each quarter just after the interest is compounded.

a. Write a recursive formula for Dante.

b. What will his balance be after 5 years?

I have no idea how to write a recursive formula or figure it out.. I'm completely lost and swamped with over-due homework because I couldn't do it.

Any help will be greatly appreciated..
Thank you in advance. :]

2007-09-19 13:29:21 · 4 answers · asked by Anonymous

log x = log 3 + 2 log x

The answer is x =1/3 but i don't know how to get it. Can anyone help?

2007-09-19 13:27:53 · 8 answers · asked by C.L. ~Raptors~ 4

please...

2007-09-19 13:25:38 · 3 answers · asked by Anonymous

Ever since the first day back at school my bf asks me what is the answer to 0 divided by 0. Anybody got an answer for it?

2007-09-19 13:24:47 · 30 answers · asked by Steffy 1

These are hyperbolas
a. xy greater than or equal to 8
b. xy greater than or equal to 1
c. xy greater than or equal to 0

b. xy less than or equal to -1

2007-09-19 13:23:49 · 2 answers · asked by Zoology 1

The sum of two numbers is 82. Their difference is 24. Write a system of equations that describes this situation. Solve by elimination to find the two numbers.


Anyone know???

2007-09-19 13:22:56 · 10 answers · asked by Anonymous

1in= 2.54cm
12in= 1ft
1yard=36in
1m= 39.37in

and its supposed to be a 2-step english to metric conversion and are suppossed to use the guessing method (not actually guessing.... its a real method)

2007-09-19 13:08:57 · 5 answers · asked by Pheobe Halliwell 1

i'm supposed to solve for x and y.

here is the problem

5-y=3x
y=2x

i don't understand it at all.
what so ever.

please help me.

please.

2007-09-19 13:08:05 · 24 answers · asked by lalala 2

2007-09-19 13:07:35 · 3 answers · asked by eric j 1

Evaluate the indefinate integral of
(1+x)/(1+x^2) dx

The answer is 1/2 ln (1+x^2) + arctan (x)....

2007-09-19 13:06:09 · 3 answers · asked by rman1201 4

please explain

2007-09-19 13:02:54 · 2 answers · asked by eric j 1

do you do distributive property first or combining like terms first?

2007-09-19 13:02:19 · 5 answers · asked by Anonymous

*= squared

if just not sure what to do when you get to the poing of combining like terms

ill get u started


(a*+2)(a*+2)

just multiply these

for other exponents, just do this (^#)

thanks

2007-09-19 13:01:43 · 4 answers · asked by Anonymous

please explain

2007-09-19 13:01:07 · 1 answers · asked by eric j 1

y = 3x + 1
so y intercept would be
0 = 3x + 1
3x = -1
x = - 1/3
how do u get - 1/3 from 3x = -1 ??
so wut would the y intercept be if y = 2/3x + 6

0 = 2/3x + 6
2/3x = -6
then wut?

2007-09-19 12:58:12 · 2 answers · asked by Anonymous

I'm in Alg II/Trig and I haven't done this stuff in a long time. I don't have my book with me and I can't find the answer online. I know it's not just adding the powers, like x^2 + x^3 = x^5, because that's how you multiply exponents. So how do you add, exactly? Is there even a way??

2007-09-19 12:56:08 · 8 answers · asked by tinomart99 3