Mathematics - 28 August 2007

expand and multiply

(5 - 6x) square

2007-08-28 04:21:47 · 9 answers · asked by Anonymous

what are the three ways to measure an angle or get it.
i know radians and degrees, whats the third?

2007-08-28 04:21:32 · 3 answers · asked by delux191jnz 2

A box has:
volume = (x² + 5x + 6)(x + 5)
height = x + 2

find the area of the bottom of the box

2007-08-28 04:19:01 · 4 answers · asked by rainwater 3

here it the question that i can't figure out...

A glass and mirror store is selling mirrors and frames. The store charges 10 Cents for each square inch of mirror, and 25 cents for eack linear inch of frame.

If there was a mirror that measured 40 inches on one side, what would the other measuremenr be if the price was $85?


thanks for the help

2007-08-28 04:13:56 · 3 answers · asked by Anonymous

2007-08-28 04:09:49 · 13 answers · asked by wgag69 1

2007-08-28 04:09:15 · 7 answers · asked by Anonymous

350 lbs of sugar were poured into 4 and 3/8 lb packages how many packages were filled?

2007-08-28 04:01:54 · 12 answers · asked by Rhyannonn C 5

2007-08-28 03:58:02 · 11 answers · asked by Anonymous

If 3x = 8y and 12y=7z and kz = 72 x
SOlve for k

2007-08-28 03:55:50 · 10 answers · asked by homeworkmom 1

.............................

2007-08-28 03:55:42 · 9 answers · asked by ann s 1

you can write in any style>>>>>>>>>>>

2007-08-28 03:44:49 · 36 answers · asked by Anonymous

Hey. If some of you have seen my recent posts you will know that i have been working of the volume of a cylinder. The length was 1.1m and the diamter was 90cm.

From doing the calculations i got the answer 699435 or 0.699435 etc, varies if i convert. In my book the anwer is 0.70m3. Could it be 0.7m3? I was wondering how to i round off the anwer i got from my calculations? From the book i have been learning from i've only used rounding off when given how many decmal places to move, but it doesn't tell me here. Why do i convert it into metres? Is it because metres are larger than centimetres? Please could you give me a guide like answer on to how to anwer these questions in a maths exam.

Also most importantly if i was in an exam i had the exact question could i put 699435m3 etc. as my anwer or has it got to be 0.70m3? Would an examiner whilst marking my paper give me no marks becuase i didn't round off? How do i know when to round off and not to?

Please help. Thank you.

2007-08-28 03:39:22 · 3 answers · asked by Jay Garrick 1

I know you hae to move the decimal point when you multiply and divide decimals but why do you have to do so?

2007-08-28 03:34:39 · 5 answers · asked by cdgasmartie2005 1

(2x^2)^3 (4x^3)^-1 and (3x^-2)(3x^2/2)^2

2007-08-28 03:20:34 · 9 answers · asked by Anonymous

School starts tomorrow, and this one problems has been driving me crazy all summer.

Some cylindrical pool has 2292 gallons of water, 5 feet in depth, and I need to find the radius. But to use the formula (V=pi*r^2*h), I need the volume, and gallons don't work with feet, right? I Googled how to convert gallons to cubic feet, and i got 306.395 ft^3. I should be using that data, right?

I've never had to convert gallons to cubic feet, and nowhere in the packet does it show you how. Am I thinking to much about this, or were my instincts correct?

2007-08-28 03:18:27 · 6 answers · asked by JM 2

see above. im pretty sure its 1 buuut just to make sure..

2007-08-28 03:09:17 · 7 answers · asked by rock it ! 1

The top of two poles of height 20 m and 14m are connected by wire.if the wire makes an angle of 30 degree with the horizontal ,then what is the length of horizontal?

2007-08-28 02:56:05 · 6 answers · asked by gunaroopam r 1

Math Lovers?

Gerry wants to inflate an exercise ball. The ball has a radius of 15 inches. If a pump can push cubic inches of air every second, how many seconds will it take to inflate the whole ball.

- If you do find the answer, explain how you got the answer and I'll give you the best answer, points. and 5 stars*****!

2007-08-28 02:19:50 · 13 answers · asked by KayKay 2

is (x^3+a^3) always precisely divisible by (x+a)? What's the proof?

Thanks

2007-08-28 01:20:07 · 3 answers · asked by Anonymous

2007-08-28 01:17:24 · 4 answers · asked by Anonymous

Please explain it, as though i am the thickest person alive. Then i will understand =] Thanks!

2007-08-28 01:10:07 · 4 answers · asked by Anonymous

Because im getting ready for school this year.

2007-08-28 01:01:14 · 23 answers · asked by Anonymous

This is not homework just out of general intrest.
I figured a cirle is just a shape with a constant radius and a side that is always perpendicular to its centre. So i figured you could break it down into tiny triangles and take the sum of the infinatly small integrals, ie integrate. But i am integrating 1/2 f(x) .dx And thats clearly not going to get the answer.
It seems logical in my head but it doesnt take into account pi, so if its the wrong approach how do you derive the area of a circle.

2007-08-28 00:40:40 · 6 answers · asked by Anonymous

I have a course in Algebra and basically recalling stuff from years back. I'm having difficulty with 2 problems and hope somebody could answer and explain them to me. Thanks sooo much. 2 Problems:

1.) (2x)^4 x^3 (the numbers with ^ in front are exponents fyi because it looks a little weird)

Simplify the expression and eliminate any negative exponents.
2.) (4u^2v^5)^2(3u^2v)^-2


Thanks again. =3

2007-08-28 00:21:32 · 5 answers · asked by Natalie 1

A. (a+b)^2-4ac=0
B. b^2-4ac=0
C. (a+b)^2+4ac=0
D. a^2+b^2-4ac=0
E. None of these

2007-08-28 00:21:23 · 3 answers · asked by Whatever 1