Sunday

January 22, 2017
Total # Posts: 143

**math**

You may find it simpler to rotate the curve and the line a quarter turn anti-clockwise around the origin. This gives y = x^2/4 and y = 1/2x + 2 They intersect at x = -2 and 4. Find the definite integral over the interval (-2, 4) of 1/2x + 2 - x^2/4. This gives 9 units

*December 15, 2010*

**Chemistry**

What is the pH when 25 mL of .20 M CH3COOH has been titrated with 35 mL of .10 M NaOH?

*November 29, 2010*

**chemistry**

if i have a molar concentration of acetic acid.046 mol/L how do i get the calculated molar mass of acetic acid

*November 18, 2010*

**8th grade math**

5%

*November 14, 2010*

**3rd grade**

10+10+0+0=20

*November 8, 2010*

**2nd grade**

7 mintutes. LABEL YOUR ANWSER

*November 4, 2010*

**College Geology Homework**

Suppose you have a sample of potassium feldspar from a rhyolite and you measure the ratio of atoms of 40Ar to 40K of 0.024 to 1, or for every 10000 atoms of 40K you find 240 atoms of 40Ar. For this problem, consider the decline of 40K from an initial value to the measured ...

*October 20, 2010*

**calculus**

Since the two tangents are mutually perpendicular and intersect on the y-axis they have gradients 1 and -1 The gradient function is y = 6x Hence x = 1/6, -1/6 So y = 1/12 both times So the coordinate of the intercept can be calculated using the equation of the tangents: Equate...

*October 3, 2010*

**algebra with pizazz pg 40 riddle**

-5-(15y-1)=2(7y-16)-y

*September 26, 2010*

**Calculus**

The absolute value of x is always positive; so is the square. So the shape will remain invariant under this transformation, and so will be its position.

*September 19, 2010*

**Social studies**

History of social studies in britain

*August 11, 2010*

**math**

REWRITE .25 AS A REDUCED FRACTION

*June 6, 2010*

**Chemistry**

what is the balanced equation of: Combination reaction: Li2O(s)+H2O(l)-->(?) I know what a combination reaction is but I don't know how to do it when it is complex like this one.

*April 20, 2010*

**geometry**

4#OUT OF 9#=ORDER? 4#OUT OF9#=ANY ORDER? EXM:1234?

*April 15, 2010*

**10th grade**

write the correct abbreviation for each metric init 1)kilogram 2)meter 3)Gram 4)milliliter 5)Millimeter 6)liter 7)kilometer 8)centimeter 9)Milligram

*April 4, 2010*

**Chemistry**

Determine the mass of antimony produced when 0.46g of antimony (III) oxide reacts with carbon.... (cont.)? ....occording to the following equation Sb2O3+3C ---> 2Sb+3CO please help me im soo lost, thank you!

*April 3, 2010*

**chemistry**

How many grams of gaseous required? If 0.260 mol of solid C and 20.0 g of solid TiO2 are reacted stoichiometrically according to the balanced equation, how many grams of gaseous Cl2 are required? 3TiO2(s) + 4C(s) + 6Cl2(g) → 3TiCl4(l) + 2CO2(g) + 2CO(g)

*February 17, 2010*

**English**

Is this a good thesis statement for an essay? If not, how should it be? In To Kill a Mockingbird, the auther Harper Lee chooses the protagonist Scout to be the narraotr of her novel because she is young, innocent and the narration is written in her adult perspective.

*November 22, 2009*

**calculus**

Equilateral triangle symmetrical about the y-axis means that the two sides which are the tangents have gradients -√3 and +√3. y' = -2x So the points of contact of the tangent to the parabola are (-√3/2, 9/4) and (√3/2, 9/4). Hence we can calculate ...

*September 23, 2009*

**Math**

1 2/4 + 1/3 =

*August 31, 2009*

**SCIENCE!!**

I love u guys for this

*January 28, 2009*

**algebra**

7n + the squareroot of n =18

*January 1, 2009*

**Maths/Physics**

From what I understand of this question if you keep breaking it in half you get: 4, 8, 16, 32, 64 etc. Which is 2^n+1 I'm just not sure where to go from there...

*November 18, 2008*

**Maths/Physics**

Is it possible to share a four fingered Kit Kat equally between 5 people if you can only break any one piece in half? Prove whether it is possible or impossible.

*November 18, 2008*

**chemistry**

What is the chemical composition of ozone, carbon dioxide, salt and water

*November 17, 2008*

**Business-Economics**

Describe any current or past news events related to wage inequality in the steel industry

*June 12, 2008*

**economics**

in general the role of board of directors is to: a) direct the day-to-day activities of the firm b) represent investor interests in management of the firm c) insure that the firm operates legally d)provide staff assistance to the CEO in strategic matters

*April 30, 2008*

**economics**

in general the role of board of directors is to: a) direct the day-to-day activities of the firm b) represent investor interests in management of the firm c) insure that the firm operates legally d)provide staff assistance to the CEO in strategic matters

*April 30, 2008*

**economics**

in the simple economics of a competitive market price increases under which condition: a) demand is constant. supply declines b) demand decreases. supply increases c) demand and supply rise concomitantly d) demand and supply decline concomitantly

*April 30, 2008*

**Health**

Carbohydrates, protains, and ____________ are the macronutrients. a) Lipids b) vitamins c) antioxidants d) minerals

*April 30, 2008*

**Science**

Air is composed of nitrogen, oxygen, argon, carbon dioxide, and other gasses. How may air be best described? a) a compound b) a mixture c) a solution d) an alloy e) an amalgam

*April 30, 2008*

**maths-probability**

Thank You

*April 16, 2008*

**maths-probability**

A family has four children. The probability of having a girl is 1/2. What is the probability of having 2 girls followed by 2 boys?

*April 16, 2008*

**maths-probability**

Thanks a lot

*April 16, 2008*

**maths-probability**

You get to throw a die. If you roll a 3, you win $6. If you roll a 1 or a 5, you win $3. If you roll an even number, you lose $6. Find your expectation for this game.

*April 16, 2008*

**Maths probability**

You get to throw a die. If you roll a 3, you win $6. If you roll a 1 or a 5, you win $3. If you roll an even number, you lose $6. Find your expectation for this game.

*April 15, 2008*

**Maths probability**

Thanks

*April 15, 2008*

**Maths probability**

Numbers is a game where you bet $1.00 on any three-digit number from 000 to 999. If your number comes up, you get $750.00. Find the expected winnings.

*April 15, 2008*

**math**

a rectangular mural is painted on a wall. if the mural is 12ft wide and covers 86.4sqft,what is the height of the mural?

*December 3, 2007*

**Math**

I'm in gr 11 doing Trigonometry 14.2 = b ---- ---- sin38 sin 67 a = 46 --- ---- sin20 sin130 (10.7)^2 = (9.5)^2 + (12.4)^2 - 2(9.5)(12.4) cos <B I just need someone to explain this to me because I just don't get it... thank you for any help

*September 23, 2007*

**Math**

Akite is 15m up in the sky. The angle the string makes with the ground is 50 degrees. How long is the kite string?

*September 4, 2007*

**Computer graphics**

Determine the equation for a cubic spline segment passing through two end points A (0, 5) and B (10, 20), having a slope of 2 and a curvature of -0.5 at A. Equation for cubic spline is:

*January 21, 2007*

**Math**

please solve -20+2h=20

*January 17, 2007*