Science & Mathematics - 20 September 2007

ok here is the problem; sqrt 6x-2 = sqrt 3x+10

What does x equal? I did the problem but i think i got 3.33, is this the right answer? Please let me know thanks.

2007-09-20 09:28:11 · 3 answers · asked by Anonymous in Mathematics

given that the 1st, 2nd, and 4th terms of an arithmetic sequence are 11-x, 2x+1 and 3x+1 respectively: solve for x and then find t1, t2, t4 and then find S15

2007-09-20 09:27:27 · 1 answers · asked by the_hockey_guy1990 1 in Mathematics

A car is moving down a street at 55km/hr. A child suddenly runs into the street. If it takes the driver 0.75s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?

2007-09-20 09:26:33 · 1 answers · asked by Ade 1 in Physics

Does anyone know anything about naturally born wingless fruit flies? I need to know as much information as possible!

2007-09-20 09:22:56 · 4 answers · asked by Anonymous in Zoology

Number 15 especially.
Also, does anyone know how to right the little numbers next to the bottom right of the formulas?

1) Barium chloride: BaCl2
2) Zinc Fluoride: ZnF2
3)Lead(II) iodide: PbI2
4)Ammonium hydroxide: NH4OH
5)Potassium Chromate: K2CrO4
6)Bismuth(III) Chloride: BiCl3
7)Magnesium Perchlorate: Mg(ClO4)2
8)Copper(II) sulfate: Cu2(SO4)2
9) Iron (III) chloride: FeCl3
10) Calcium cyanide: CaCn2
11) Copper(I) Sulfide: Cu2S
12) Silver Carbonate: Ag2CO3
13)Cadmium hypochlorite: CdClO2
14) Sodium bicarbonate: NaHCO3
15) Aluminum acetate: Al(Ca2H3O2)3
16)Nickle(II) Phosphate: Ni3(PO4)2
17)Sodium Sulfite: Na2SO3
18)Tin(IV) oxide: Sn2O4

Thanks

2007-09-20 09:18:35 · 3 answers · asked by evilshenanegans 1 in Chemistry

i need this by tonight!!! its due tomorrow !!!! please help!!!

2007-09-20 09:14:59 · 2 answers · asked by dayna r 1 in Mathematics

What is 15% of 55 pounds or 105 dollars

and

What is 15% of 35 pounds or 70 dollars.

thanks

2007-09-20 09:14:32 · 8 answers · asked by breakthrough_usman 1 in Mathematics

Let "V" and "W" be finite dimensional vector spaces and
T: V-->W be linear.
a)prove that if dim (V) < dim(W), then "T" cannot be onto.
b) Prove that if dim(V) > dim(W), then T cannot be one one.

2007-09-20 09:13:47 · 4 answers · asked by amjad 1 in Mathematics

How do u convert a parametric equation into a cartesian equation????

2007-09-20 09:11:10 · 2 answers · asked by hello 1 in Mathematics

2007-09-20 09:10:29 · 26 answers · asked by sammy 1 in Astronomy & Space

a) express 3x^2 - 12x + 5 in the form A (x - B)^2 - C , where A, B and C are constants whose values should be stated

b) find the minimum value in
I) 3x^2 - 12x + 5
II) (3x^2 - 12x + 5) ^2

c)for each expression in b state a value of x which gives the minimum value

2007-09-20 09:09:28 · 3 answers · asked by Anonymous in Mathematics

2007-09-20 09:05:39 · 6 answers · asked by Anonymous in Mathematics

four of the five water molecules help by the formula unit of the salt are attached to the copper ion. The fifth water molecule is attached to the sulfate ion, but by a diffrent mechanism. how is the water molecule bonded to a sulfate ion.

2007-09-20 09:05:36 · 3 answers · asked by shashank 2 in Chemistry

2007-09-20 09:05:24 · 9 answers · asked by Antares 6 in Astronomy & Space

2007-09-20 09:01:38 · 11 answers · asked by Hector 2 in Chemistry

2007-09-20 09:00:34 · 4 answers · asked by trendelina z 1 in Earth Sciences & Geology

Writing: Find the length of a side of a square whose perimeter and area are the same number, though not the same unit.Explain your reaoning.

2007-09-20 08:57:54 · 6 answers · asked by EricaEcstasy 1 in Mathematics

it says graph each equation. The domain is R. what does htis mean? how do i do it?


y=2x+1

2007-09-20 08:57:26 · 2 answers · asked by Anonymous in Mathematics

Venus is the second planet from the sun, and Earth is the third planet fom the sun, on Venus it's like 800 degrees and here maybe on a good day get to 100-120 degrees if that.

2007-09-20 08:57:23 · 8 answers · asked by sammymac23 1 in Astronomy & Space

2007-09-20 08:55:16 · 7 answers · asked by bracedoc2000 1 in Mathematics

.. WHEN

1. The Earth Rotates around its own axis at a super speed of 1040 miles / hour

&

2. The Earth Rotates around the Sun at a breathtaking speed of 30 km (18.5 miles) / Second.

But we don't feel any movement ?

How is iT ?

Would we feel it if we had some planets too near to the earth?

Thinking of this makes my head rotate faster than the Earth.

Help me, Please!

Thanks in advance!
..

2007-09-20 08:53:42 · 7 answers · asked by Anonymous in Astronomy & Space

In mice black (B) coat color is dominant to brown (b), and the presence of color (C) is dominant to albino (c). A black mouse is found wandering around on the floor of the mouse room. Its exact genotype is unknown. What cross/es would you need to determine the exact genotype of this mouse? What are the possible outcomes

2007-09-20 08:53:40 · 3 answers · asked by AUNIDLY 1 in Biology

2007-09-20 08:53:10 · 25 answers · asked by Conspicuously Inconspicuous 2 in Physics

i need help with 2 problems. Please explain so i can understand how to do these

1. How many atoms of Kr contain 3.60 moles of Kr?

2. How many moles of SO3 contain 1.5 x 10^24 SO3?

2007-09-20 08:51:15 · 4 answers · asked by edge0125 1 in Chemistry

Please respnd soon, I need to know it for school tomorrow, and I go to bed at 8:30-9:00. Please respond soon!!I need to know.

2007-09-20 08:50:48 · 2 answers · asked by sammymac23 1 in Chemistry

1)find an equation of the straight line which passes through the origin and is perpendicular to the line y = 1/2x + 3

2)find a cartesian equation for the perpendicular bisector of the line joining A(2,3) and B(0,6)

2007-09-20 08:49:17 · 3 answers · asked by Anonymous in Mathematics

1.Mars
2.Earth
3.Mercury
4.Venus

2007-09-20 08:49:00 · 13 answers · asked by Lase B 1 in Astronomy & Space

2007-09-20 08:48:06 · 5 answers · asked by Anonymous in Astronomy & Space

2007-09-20 08:37:12 · 2 answers · asked by sophie's mom 1 in Chemistry

Assuming that acid rain contains 4.00×10^−5 M H2So4 , approximately what volume of rain is necessary to dissolve a 230 marble statue?

2007-09-20 08:34:47 · 1 answers · asked by stranger 1 in Chemistry