Mathematics - 13 August 2007

2007-08-13 16:17:21 · 9 answers · asked by chellapandi k 1

solve by extracting the square roots

(r+6) squared =10

solve using the quadratic formula.

7x squared + 12x = -3

thanks!

2007-08-13 16:16:29 · 3 answers · asked by sexycheerleader2009 3

who was the one who came up with algebra?

2007-08-13 16:13:20 · 8 answers · asked by bandgirl818 1

I think I lknow the answer to this one but I'd like some feed back. The question reads as followed: Suppose at the kickoff of a football game, the kick return man catches the ball at the left side of the goal line and runs for a TD diagonally across the field. How many yards did he run? (The field is 100 yards long and 160 feet wide.)

Well just from playing the sport I know that 40 yards = 160 feet. When I worked the problem I got 120 yards ran by the return man.

2007-08-13 16:05:22 · 5 answers · asked by Anonymous

Given the polynomial

p(x)=2x^3+17x^2+23x-42 and one of its factors x+6

a. how many zeros will there be? how do u know that?

b. find the remaining factors of the polynomial

c. please explain in words how you found the others.

2007-08-13 16:00:41 · 3 answers · asked by Anonymous

Will you help me with this geometry question, please?
Thank you a bunch.
And show/explain how to get the result?

I go 100 miles North, 100 miles west, and 100 miles south, ending up at the same spot where I began. Where did I begin?

Thanks a bunch. <3

2007-08-13 16:00:39 · 3 answers · asked by Anonymous

3 dice are tossed. what is the probability of getting exactly one five??

2007-08-13 15:57:09 · 10 answers · asked by Anonymous

A company specializing in magazine sales over the phone found that in 2500 calls, 360 resulted in sales and were made by male callers, and 480 resulted in sales and were made by female callers. If the company gets twice as many sales per call with a females voice than with a males, then how many of the 2500 calls were made by females?

2007-08-13 15:52:51 · 4 answers · asked by mustang_muscle06 1

A) I am a counting number. If you were to multiply me by 3 and add 6 the result would be 30. What number was I to start with ?

B) The sum of 2 consecutive numbers is 33 what are the numbers.

C) The lenght of a rectangle is 5cm longer then its width. If the perimenter of the rectangle is 50cm , What is the lenght ?

D The combined age of mike and tom is 39. If mike is twice as old as tom how old is mike?

E) The length of a rectangle is twice its width. If the perimeter of the rectangle is 36cm, what is the lenght ?

2007-08-13 15:41:59 · 14 answers · asked by Az S 1

{ π/6 , 5π/6 }

{π/3 , 5π/6 }

{π/2 , 3π/2 }

{2π/3 , 4π/3 }

{2π/3 , 5π/3 }

2007-08-13 15:29:50 · 3 answers · asked by Anonymous

Question 1:
-----------------
The height h in feet of an object after t seconds is given by the function
h = –16t2 + 40t + 10.
How long will it take the object to hit the ground? Round your answer to the nearest thousandth.

Question 2:
----------------

Find the constant term that should be added to make the following expression a perfect-square trinomial.
x2 + 2x

Question 3:
------------------

Identify the axis of symmetry, create a suitable table of values, then sketch the graph (including the axis of symmetry).

y = –x2 + 3x – 3


Question 4:
---------------

Identify the axis of symmetry, create a suitable table of values, then sketch the graph (including the axis of symmetry).

y = x2 – 4x

Question 5:
---------------

The length of a rectangle is 1 cm more than 2 times its width

2007-08-13 15:28:37 · 6 answers · asked by Anonymous

A = 1w; solve for w



and



V = 3.14r^2h; solve for h

2007-08-13 15:18:04 · 2 answers · asked by Anonymous

I did this before but I forgot to include a parenthesis:

2 x (3-(4/2 x 5 -3) - (-5) + 6 squared)=

Just the 6 is squared, not the whole problem.

2007-08-13 15:01:20 · 5 answers · asked by q 2

best answer 10 points

2007-08-13 15:01:04 · 13 answers · asked by Anonymous

Pick the letter that cordspondes with each #.
1) y=2x²
2)x²
3) -1/3x²
_________
consider the shape of a parabola to be a "bowl". If the bowl is face up, then we say the "curve" is concave up. In respect to your equations, the standard form of the equation

y=ax^2 +b

"a" tells you if the curve is concave up or down ( pos or neg)
"b" tells you where it crosses the y axis when x is 0

My problems don't make sense, im given 8 equations and a empty graph that show parabala with out any x or y unit boxes.
Problems:
1) y=2x²
2)x²
3) -1/3x²

#3) is telling my that this parabala will be fat in a negative parabala, but there are like 4 negative parabala that shows the same thing. How do I know which is the right one?, they all look the same.

#1) would be skinny and postive parabala curve. There are 4 other postive parabala, how do I know to pick a right one?

Please, explain/show work.

2007-08-13 14:55:03 · 2 answers · asked by Anonymous

Will you help me with this geometry question, please?
Thank you a bunch.

What is the lowest value of n for which an n-gon has interior angles of non-integer degree measure?

Thanks a bunch. <3

2007-08-13 14:53:31 · 6 answers · asked by Anonymous

Okay hi everyone I just need you to answer my questions!!!
Convert to decimal:
fraction:4 top 8 denominator ( bottom)
fraction: 4 top 6 denominator

2007-08-13 14:50:23 · 11 answers · asked by Sarina D 3

ok its pretty simple but i dont know wat to put on my answer sheet.

Test the number for divisibility by 2, 3, 4, 5, 6, 8,9, and 10.
1. 128 2. 432 3. 22,480 4. 638,928

2007-08-13 14:48:02 · 9 answers · asked by Anonymous

An urn contains 6 red and 4 white balls. Three are drawn without replacement. If the third ball is red, determine the probability that the second was white.

And can I plz get an explanation? Thanks!

2007-08-13 14:44:49 · 5 answers · asked by Anonymous

(9m)^3/2

(27b)^1/3 / (9b)^-1/2

if x^3/4 = 27, what is the vaule of x?

if b^-1/2 = 4, what is the value of b?

if (2m)^-6 = 16, what is the vaule of 2^3m?


PLEASE HELP?! MY ANSWERS ALWAYS COME UP TO BE LARGE NUMBERS THAT DO NOT FIT.

best answer = 10 points! <3

2007-08-13 14:42:33 · 5 answers · asked by Anonymous

How do you solve this:

3 ( x + 1) = 2 ( x + 11)

- I know to use the distrubuting prop. but after the 2nd step I get confused,pleez help!


The length of a rectangle is 5 cm greater than it's width. The perimeter is 58 cm. Find the dimensions of the rectangle.

~thankz!

2007-08-13 14:41:12 · 18 answers · asked by Anonymous

How do i explain this equation to her? My friend, i mean. She has a bit of a problem with math...

-6-3(2k+4)=18

I know its foil but she cant ver much get it. So can someone explain it in a way youd tell a say, 9 year old? I don't mean to insult you!

2007-08-13 14:36:17 · 10 answers · asked by ????????? 4

y - 7 > 3 + 2y


i got -1y>10?

2007-08-13 14:24:17 · 11 answers · asked by Anonymous

Find an equation of the circle with center at
(-3, 5) that is tangent to the y-axis in the form of (x-A)^2+(y-B)^2=C where are constants.

A=_____
B=_____
C=_____

2007-08-13 14:23:23 · 2 answers · asked by Anonymous

These are mah problems,I am clueless.....HOW? "^"carrot means exponent! "/" equals fraction/division.

#1 V= 3.14/3 r^2h,solve for h #2 S=L(1 - r) ,solve for r

Solve for x

#3 4/9 (x + 3) = g

#15 1/2 (x - 3) + (3/2 - x) = 5x

#18 u/5 + u/10 - u/6 = 1


I am so lost,If you can make any since of any of these please explain,thanky!

2007-08-13 14:11:01 · 3 answers · asked by None 3

2007-08-13 14:05:52 · 1 answers · asked by Julie B 1

Please show all work.

Thank you very much :)

2007-08-13 14:05:18 · 5 answers · asked by Elizabeth 3

I need both of these solved i can't do them on my own thanks.

5/x + 3 + x/4 = -3


x/2x + 10 = x - 9/x - 7

2007-08-13 13:44:48 · 6 answers · asked by daniel's sweety 1

2007-08-13 13:44:48 · 6 answers · asked by melissa 1

2007-08-13 13:41:07 · 5 answers · asked by rachel 1