Mathematics - 27 September 2007

X-4(8-4x).

Please explain.

2007-09-27 06:48:33 · 4 answers · asked by ray 1

Which is an instance of a physical surface which might be used to illustrate the concept of a plane.

Consider two walls that meet in a corner as representing portions of two geometric planes. What geometric shape is formed by the set of points common to the two planes?

Consider three walls that meet in a corner as representing portions of two geometric planes. How many points are common to the three planes?

2007-09-27 06:44:43 · 2 answers · asked by Anonymous

A box has a rectangular base of 30cm by 25cm. Iron rods are to be placed in the box.
a.) Calulate the biggest sized rod that could be laid down in the box.
b.) Only one rod is to be placed in the box. Calculate the longest rod possible that can be placed in the box.

Answers:
a.) 39.05
b.) 41.83
But, how do you get thoose answers???

2007-09-27 06:36:53 · 9 answers · asked by youlookingood 1

int (root(4 - x^2)) = ?

I know the answer involves arcsin somehow but have no idea how to get there, im a bit rusty at these and would appreciate the method used as well as the answer

2007-09-27 06:26:03 · 6 answers · asked by ultimaninjabob 1

someone please help me I've been trying to figure this out for days now.. I'm trying to help my son with his math homework and I want to make sure I have the right answer but I ca't figure it out



Solve for the value of y and the measures of angles 1 and 3. Please show work. One of the lines crosses another line to form four angles labeled clockwise 1,2,3, and 4. The measures of these angles are:
(angle 1)M<1 = (6y +29)
(angle 2)M<2 = (4x+31)
(angle 3)M<3 = (1 2y -7)
(angle 4)M<4 = (6x - 11 )

2007-09-27 06:08:21 · 9 answers · asked by Jenn H 1

2007-09-27 05:59:50 · 11 answers · asked by Anonymous

2007-09-27 05:51:38 · 30 answers · asked by Trell A 1

About cones (math)
let a=cone angle at tip
s=sin(a/2 * pi/180)
d='diameter multiplier'
w=wedge cut out from circle (degrees)
d=1/s
w=s*360

2007-09-27 05:47:27 · 2 answers · asked by Anonymous

Solve

2007-09-27 05:47:01 · 9 answers · asked by shawntae6513 1

Need help

1.The intersection of two planes could be which of the following:

A) a ray
B) a segment
C) a line
D) a point

2. Find the midpoint between the points (2,-4) and (5,-2).

A) (-1,1.5)
B) (3,3.5)
C) (3.5,-3)
D) (-1.5,-1)

2007-09-27 05:34:41 · 8 answers · asked by Anonymous

what is the acual definition

2007-09-27 05:26:49 · 8 answers · asked by donswaheli 1

2007-09-27 05:21:55 · 7 answers · asked by mimilog 2

I am not looking for an answer to this problem, I was just wondering if anyone could tell me what method I would need to work it.

2007-09-27 05:21:09 · 4 answers · asked by Amanda D 3

2007-09-27 05:10:52 · 6 answers · asked by lethorian91 2

Differentiate the following function.

y=(3x^2+8x+2)/sqrt(x)

I am lost at this one. I am trying to use f(x-h)-f(x)/h to solve it but keep getting the incorrect answer. any help would be great. Thanks

2007-09-27 05:06:14 · 4 answers · asked by m_carl 1

I have box. the top has and area of 240 square inches, the side 300 squre inches and the end is 180 square inches what are the dimensions of the box

2007-09-27 04:58:35 · 6 answers · asked by --LEAFS 13-- 2

the following is a chart but it needs to be on a graph to determine the answer i need the final answers i have no idea how to arrive at the final answer

I need
the Angular speed of star in degrees per hour
Length of day in hours


Time----------------Angle
O hours 00 minutes--------20.0 degrees
0 hour 30 min---------24.4 degrees
1 hour 00 min------28.2 degree
1 hour 30 min ------33.4 degree
2 hour 00 min--------37.5 degree
2 hour 30 min------41.8 degree
3 hour 00 min-------45.9 degree
3 hours 30 min-----49.5 degree
4 hours 00 min-----53.0 degree
4 hour 30 min--------57.8 degree
5 hour 00 min-------60 degree
5 hour 30 min-----65.3 degree
6 hours 00 min .....69.9 degree
6 hours 30 min----72.8 degree
7 hours 00 min------76.4 degree
7 hours 30 min-------81.6 degree
8 hours 00 min-------83.9 degrees

I NEED the answer...... i have been trying but keep getting the wrong answer... i need the final answer who ever gives the correct answer get 10 points

2007-09-27 04:57:28 · 2 answers · asked by investing1987 3

2007-09-27 04:56:54 · 4 answers · asked by Ciavana 3

2007-09-27 04:49:05 · 5 answers · asked by i4unaidu 1

ln (1+x) = 1+ lnx

Thanks

2007-09-27 04:36:50 · 5 answers · asked by Mystic healer 4

HY I'm from Romainia and i want to ask 1 question : HOW CAN I SOLVE THIS??????????? : "" 2mx+3=3m+x ""where m is part of R
PLS help i realy don't have any ideas!! could you help????

2007-09-27 04:34:30 · 2 answers · asked by THE BMW DUDE 1

dy/dx= 1 / [x^2 - 1]

y=?

2007-09-27 04:31:39 · 5 answers · asked by Chocolate Strawberries. 4

A crystal growth furnace is used in research to determine how best to manufacture crystals used in electric components for the space shuttle. For proper growth of the crystal, the temperature must be controlled accurately by adjusting the input power. Suppose the relationship is given by the following equation, where T is the temperature in degrees Celsius and w is the power input in watts.
T(w) = 0.1w^2 + 2.156w + 20

(a) How much power is needed to maintain the temperature at 204°C? (Give your answer correct to 2 decimal places.)

(b) If the temperature is allowed to vary from 204°C by up to ±1°C, what range of wattage is allowed for the input power? (Give your answer correct to 2 decimal places.)
smaller value=?
larger value=?

2007-09-27 04:15:53 · 2 answers · asked by lady_divine@sbcglobal.net 1

How do you integrate:

dy/dx= 1 / [x^2 - 1]

2007-09-27 04:12:03 · 4 answers · asked by Chocolate Strawberries. 4

2007-09-27 04:09:57 · 12 answers · asked by kchotty 2

(7x+3)/3 < 43 I just need help on how to simplify the left side. I tried multiplying it by 3/1 but that doesn't give me the right answer. Please help! Thanks!

2007-09-27 04:09:45 · 5 answers · asked by ♫ ∫aoli 4

i suckk

2007-09-27 04:07:02 · 21 answers · asked by K_Dizzle35** Y!A_MoSt HaTed!* 5

can u plz tell how many inches equal one kilometre???

2007-09-27 04:00:30 · 12 answers · asked by shubhangi 1

2007-09-27 03:55:44 · 4 answers · asked by Grace 2

Hi, need some help with finding asymptotes. Thanks.

f(x)= -4x / x^2 + x - 6

Need horizontal and verticle. thanks for your help. im stuck

2007-09-27 03:52:23 · 4 answers · asked by MysteryMan 1