# Questions Asked onApril 20, 2012

1. ## statistics

Using the Chi-square test I am having problems when I get to the part of adding the the fractions and getting the percent that must be rounded to three decimal places. I have looked in the text and searched the internet. Can you please me

2. ## Physics 30

If a truck moving at 30km/hr accelerates at 2.5m/s^2 to 50 km/hr, what time (in sec) does it take? a. 2.22s b. 5.56s c. 8 s d. 28.8s

3. ## Social Studies

Daughter was born on 7-19. Son on the 24 thof the 2 month and my sister in the 51st year of our lord father in the 42nd year. What is my sign?

4. ## Chemistry

A solution household bleach contains 5.25% NaClO, by mass. Assuming that the density of bleach is the same as water(1.0g/ml). Calculate the volume in mL of household bleach that should be diluted with water to make 500.0 ml of a pH= 9.80 solution. Here's

5. ## Chemistry

Calculate the concentrations of all species in a 0.810 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4 x 10^-2 and Ka2 = 6.3 x 10^-8 so I'm trying to find Na, SO3 2-, HSO3-, H2SO3, OH-, H+ and heres what I

6. ## Life orientation

5 ways in which the human or environmental problem impact lack of infrastructure on the community.provide relevant sources to support your claims.

7. ## Math/ Algebra 2

How many different ways can the letters in the word COMBINATIONS be arranged if the letter C is first and the letter S is last? Thank you in advance ^^

8. ## Chemistry

C6H5COOH(aq) + NO2-(aq) C6H5COO-(aq) + HNO2(aq) A table of ionizations is given to calculate the equilibrium constant for this overall reaction.. but when i looked onto the table the only thing given was the Ka for C6H5COOH [6.3×10^–5] and HNO2

9. ## Algebra 2

There are 8 movies you would like to see currently showing in the theater. Due to time offerings, 2 of the movies must be seen first and second respectively. A) In how many different ways can you want all the movies?

10. ## Math

One bag contains 4 pink marbles and 4 turquoise marbles, and a second bag contains 2 white marbles and 1 pink marble. If Angel randomly draws one marble from each bag.... A) What is the probability that they are both pink?

11. ## geometry

If all of the diagonals are drawn from a vertex of a quadrilateral, how many triangles are formed?

12. ## life orentation

provide 5 ways in you critically discuss how life style disease/behaviour impact on the teenager

13. ## chemistry

How do you calculate the solubility at 25°C in grams per liter of silver iodide in an aqueous solution that is 0.15 M inpotassium iodide and 0.25 M in ammonia.

14. ## Government

Does the U.S. have a responsibility to become involved in Syria or any other country where civilians are being killed by their leaders?

15. ## programming

write a payroll program that promt a user to enter his name,hourly rate,working hours in the week and display the amount earning by each employee in Rand.user is not allowed to enter any negative value for hourly rate and working hours.

139. ## chemistry

formula: 2KClO3 + NaCL = 2KCl + NaCl + 3O2 MASS OF TEST TUBE & MIXTURE = 34.03 G MASS OF EMPTY TEST TUBE = 31.29 G MASS OF MIXTURE = 2.74 G 1ST WEIGHT OF TEST TUBE & RESIDUE =33.64 G FINAL WEIGTH OF TEST TUBE & RESIDUE = 33.64 G MASS OF RESIDUE = 2.35 G

140. ## Physics

A wheel starts rotating from rest with uniform angular acceleration.After 3.0,its completes one revolution.Calculate a) angular velocity after 3.0s. b)angular acceleration c)angular velocity after completing d)time taken for second revolution

141. ## Chemistry

Write a balanced nuclear equation for the positron emission of each of the following nuclei: a) arsenic-74 b) oxygen-15

142. ## math

A statue is 62 inches in height. When it is shipped in a box, it will have padding that is 4 inches thick on each end. Will the statue fit into a box that is 2 yards in height?

143. ## Chemistry!! Help

Consider the following equilibrium: N2O4 2NO2 You may assume that delta H and delta S do not vary with temperature. At what temperature will an equilibrium mixture of 1 atm total pressure contain twice as much NO2 as N2O4?

144. ## Geometry

Find the missing side. Approximate the answer to three decimal places when appropriate. A=15 yd C=25 yd? Help!

145. ## calculus

Find the dimensions of the rectangle with area 256 square inches that has minimum perimeter, and then find the minimum perimeter. Dimensions: Minimum Perimeter:

146. ## Question (plz read!)

What is Equine Science????

147. ## Integral calculus

Yesterday I posted this number that I don't understand. There was a mistake in the question,this is the right one: ∫ (5^(3/x) - (x^8 + 9)^1/3 ) / 3x^2 will u, for sub. be = x^8 + 9? Then du is = 8x^7 dx x^7 dx = 1/8 du Thank you!

148. ## math

A recipe for cream of broccoli soup calls for 1 pint of cream and a quart of milk.to reduce the fat,Mrs.homes plans to use all milk. How many cups of milk should she use in the recipe?

149. ## math

If C dollars are deposited in an account paying r percent annual interest, approximate the amount in the account after X years if c=\$250, r=2.4% and x=23 years?

150. ## help

Introduction to quadratic equations? If you solve the equation by completing the square, fill in the blanks. 9x^2+9x+4=0 x^2+x+blank=-4/9+blank

151. ## math

A recipe for cream of broccoli soup calls for 1 pint of cream and a quart of milk.to reduce the fat,Mrs.homes plans to use all milk. How many cups of milk should she use in the recipe?

152. ## geometry

what is the lateral surface area of the cone with radius 9cm and slant 12.5cm? possible answers; 221cm^2 240cm^2 304cm^2 620cm^2 Could someone please help

153. ## statistics

Dr. Snyder teaches a large introductory statistics course. In the past, the proportion of students that receive a grade of A is 0.20. The proportion that receives a B is 0.30. The proportion that receives a C is 0.30. The proportion that receives a D is

154. ## math

The odds for being assigned homework are 5.5 to 1. Find this expressed as a probability.

155. ## Chemistry

What is the pH of a 0.0353M solution of NH4F and a 0.0000666M solution of NH4F?

156. ## Physics

A car is initially traveling at 20 m/s when it accelerates to 35 m/s in a time of 5 seconds. What is the acceleration of the car in m/s^2?

157. ## calculus

An open box is to be made out of a 8-inch by 14-inch piece of cardboard by cutting out squares of equal size from the four corners and bending up the sides. Find the dimensions of the resulting box that has the largest volume. Dimensions of the bottom of

158. ## Math

Which gender typically watches more television per month? Justify your answer. MALE |. . . . :. . . : .: .. . .: . . . . . FEMALE| . . .:. . . .::.. ::. .. . . | | | | | | | 700 1050 1400 1750 2100 2450 2800

159. ## physics

A wire of radius one meter is centered on the origin in the xy plane. This wire carries a total charge of +Q. Another wire of length two meters runs along the z-axis and is centered at the origin. It carries total charge -Q. What is the electric field

160. ## calculus

I've posted this question before and think I've made some progress but it some part of the second answer I got is wrong I've done the first question but I cannot get any farther. I'm so stuck. Please explain or just help me to figure out the next steps. A

161. ## physics

a one meter chain that weights one newton sits on a flat horizontal table that is one meter from the floor. the coefficient of friction between the chain and the table is 0.15. how much of the chain can dangle off the table until the chain pulls itself

Devin attempted to solve the inequality -2x+6>10 following the steps below: •subtract 6 from both sides of the inequality. •divide both sides of the inequality by -2. He finds that x>-2. Clearly explain why this is not a correct solution. In your

163. ## science

scientists often use----to better see how something work? a) models b)data c) procedures d) hypothesis

164. ## Calculus

Find the derivative of each 1) y = e^x(Sin²x) 2) y = (x²+1)e^-4 3) y = x²(e^Sinx)

165. ## calculus

A rancher wants to fence in an area of 3000000 square feet in a rectangular field and then divide it in half with a fence down the middle, parallel to one side. Length of fence:______ feet *obviously I'm bad at word problems but that's why I'm trying to