Saturday
November 29, 2014

Posts by Maddie


Total # Posts: 201

physics
A 78 g basketball is launched at an angle of 45.4◦ and a distance of 10.1 m from the basketball goal. The ball is released at the same height (ten feet) as the basketball goal’s height. A basketball player tries to make a long jump-shot as described above. The ...
November 20, 2014

socials studies 9
why do you think lawyers in the land claims trials refer to the royal proclamation of 1763 more than 200 years after it was proclaimed? I do not understand this question..
November 8, 2014

Physics
A billiard ball of mass m = 0.250 kg hits the cushion of a billiard table at an angle of θ1 = 58.8° and a speed of v1 = 28.4 m/s. It bounces off at an angle of θ2 = 71.0° and a speed of v2 = 10.0 m/s. (a) What is the magnitude of the change in momentum of the...
October 31, 2014

physics
A rocket blasts off from rest and attains a speed of 58.9 m/s in 14.4 s. An astronaut has a mass of 57.5 kg. What is the astronaut's apparent weight during takeoff?
October 28, 2014

Advanced algebra
The number of freshmen entering college in a certain year is 621. What type of data is 621? A. Discrete data B. categorical data C. Continuous data
August 18, 2014

Chem 1120
Oops, my problem states I2 is a gas. I forgot to include it. so does this change the equation?
July 13, 2014

Chem 1120
The KC for the reaction I2 --> 2I is 3.8 x 10 ^ -5 at 727 degrees C. Calculate Kc and Kp for the equilibrium of 2I -> I2 at the same conditions. I don't understand how to set up or solve this problem. I know Kc=[I]^2 / [I2] = 3.8x10^-5 for the first equation but I ...
July 13, 2014

gemotry
The coordinates of the endpoints of AB¯¯¯¯¯ and CD¯¯¯¯¯ are A(2, 3), B(8, 1), C(5, 2), and D(6, 5). Which statement about the line segments is true?
May 12, 2014

Math
Using these numbers, 2 4/9, 2 5/9, 2 6/9, 2 8/9, 3, 3 1/9, 3 3/9, 3 4/9 & 3 5/9. Build a square where the sum of every horizontal, vertical, and diagonal row is 9. The square has 3 rows across & 3 rows down for a total of 9 small blocks.
April 16, 2014

Maths
A debate team of 4 is to be chosen from a class of 29 where the order in which the members of the team are chosen does not matter. There are two twin brothers in the class. How many possible ways can the team be formed which will not include any of the twin brothers?
March 16, 2014

Language Arts
What is the simple subject in this sentence? These homes are built up from the bottom of the pond. a. these b. homes c. pond
March 12, 2014

Math
I have 10 dozen potatoes which must be equally divided into 20 bags. How many potatoes will be in each bag?
March 6, 2014

Math
an airplane is flying a compass of 340 degrees at 325 mph. A wind is blowing with the bearing 300 degrees at 30 mph. Find the component form of the velocity, and find the actual ground speed and direction of the plane.
February 28, 2014

Algebra 2
Why couldn't the chicken find her egg?
February 16, 2014

math
My numerator is 6 less than my denominator. I am equivalent to 3/4
February 11, 2014

math
thanks steve
February 11, 2014

math
My numerator is a prime number. The GCF of my numerator and denominator is 2. I am equivalent to 1/5.
February 11, 2014

math
Thank you so much chelle
February 11, 2014

math
My numerator is divisible by 3. My denominator is divisible by 5. My denominator is 4 less than twice my numerator. plz help very confused!
February 11, 2014

Math
How do I find a fraction equivalent to 3/4 with a numerator that is 6 less than my denominator.
February 11, 2014

chemistry
I still desperately need help guys! Homework due TOMORROW!
January 8, 2014

chemistry
Please explain, in simple English, why is milk a colloid?
January 8, 2014

Physics
Vector V1 is 6N along the negative axis. Vector V2 is 4.5 N and point 45 degrees north of the x axis. Find the x and y components of each vector and find the resultant R=V1+V2with the components.
November 26, 2013

physics
an eraser
November 26, 2013

Physics
A 2 g bullet flying at 390 m/s hits a 2.7 kg aluminum block at room temperature and embeds itself in the aluminum. After everything has come to equilibrium, how much has the entropy of the aluminum block increased?
November 26, 2013

physics
A 1700 kg car moving south at 19.5 m/s collides with a 2050 kg car moving north. The cars stick together and move as a unit after the collision at a velocity of 5.16 m/s to the north. Find the velocity of the 2050 kg car before the collision. m/s to the north
November 14, 2013

Physics
Imagine that if you drop an apple from a certain height, its final speed is 20 m/s when it reaches the ground. If you throw the apple vertically downward from the same height with an initial speed of 20 m/s, what will be its final speed? I tried 2mgh=1/2mv^2 so that the mass ...
October 7, 2013

Physics
A spring has an unstretched length of 9.8 cm. The potential energy stored in the spring is V when the spring is streched to a length of 11.8 cm. What is the stretched length of the spring when its potential energy is 2.2 V? What compressed length will result in a potential ...
October 7, 2013

Calculus
Determine whether Rolle's Theorem can be applied to f on the closed interval [a,b]. If Rolle's Theorem can be applied, find all values of c in the open interval (a,b) such that f'(x)=0. f(x) = x^(2/3) - 1 [-8,8] I plugged in both values and found out that they both...
September 26, 2013

math
Hi! I'm Maddie. I need some help on my homework. Here are three problems I need help with: A bowl contains only red marbles, blue marbles and green marbles. The probability of selecting a red marble from the bowl is 3/13. The probability of selecting a blue marble from the...
August 21, 2013

Math
Assuming lambda=0.02 and t=50, compute P(2)
June 25, 2013

Math
What is the range of values of the probability of an event?
June 25, 2013

math
You want to put $4,000 in a simple interest account. It has a 2.5% annual interest rate. How long will it take you to earn $500 in interest?
May 27, 2013

Math
How do you add fractions??
May 14, 2013

physics
What would be the final temperature when 125g of 25 degrees Celcius water is mixed with 85g of 45 Degrees Celcius water? ( hint: Equate the heat gained by the cool water with the heat lost by the warm water.)
May 3, 2013

7th Grade Language- Arts Ms.Sue~!
I just did the test and got 100% 1: A 2: c 3: B 4: D 5: B
April 24, 2013

Math
How do you find the total number of maximum and minimum points of the function whose derivative is given by f^1(x)=x(x-3)^2(x+1)^4 ???
April 21, 2013

Chemistry
Calculate the pH at the equivalence point when 50 mL of 0.098 M propionic acid is titrated with 0.340 M NaOH. I tried solving for the volume of NaOH and them using the total volume and then plugging it in to [H+][A-]/[HA] and used the Ka value for propionic acid but it was not...
April 15, 2013

Chemistry
Calculate the pH of a buffer solution that contains 0.60 M NaH2PO4, and 0.26 M Na2HPO4.
April 14, 2013

Chemistry
The pH of an 0.0870 M solution of weak acid A is 2.20. The pH of an 0.0830 M solution of weak acid B is 4.07. The pH of an 0.0890 M solution of weak acid C is 5.13. Identify the three acids from among those listed below (the Ka values are listed in Appendix E of your textbook...
April 12, 2013

Chemistry
I'm not really sure how to go about doing this problem... What is the pH of a 7.40 x 10-3 M solution of NH4Cl? Help is appreciated! Thank you
April 7, 2013

algebra
write and inequality describing this region. will an 18 wheeler hold 71 refrig's and 118 tv's or will it hold 51 refig's and 176 tv's?
March 24, 2013

Chemistry
Awesome! Thank you
March 14, 2013

Chemistry
An aqueous antifreeze solution is 31.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.039 g/cm3. Calculate the molality of the ethylene glycol.
March 14, 2013

Chemistry
Thank you :)
March 14, 2013

Chemistry
A solution of hydrochloric acid (HCl) contains 22.5% hydrochloric by mass. What is the molality of this solution I'm not sure how to start this problem...
March 14, 2013

Chemistry
maybe my homework set online is messed up because it is not taking either of these answers :( sorry. But thank you both for your help!
March 14, 2013

Chemistry
hmmm for some reason this did not work... How did you go about solving this problem? Could any of them be a tie?
March 14, 2013

Chemistry
Rank the following compounds in order of their solubility in water. (most soluble = 1 -- least soluble = 4)--Note that for the same solubility rank the same (a tie). (CH3)2CHOH HOCH2CH(OH)CH2OH CH3CH2OH (CH3)3COH
March 14, 2013

Chemistry
Thank you so much!
March 14, 2013

Chemistry
What is the molarity of nitrate ions in a solution containing 2.20 mg of Mg(NO3)2 dissolved in 7.35 L of water?
March 14, 2013

math
If x = 15 units, y = 7 units, and h = 4 units, then what is the area of the trapezoid
February 11, 2013

Algebra
Find the integers from 1 to 144 which are perfect squares and write the square root of each one.
February 5, 2013

Math
Ten boys are to share 3 3/4 pounds of candy equally. How much candy does each boy get?
February 3, 2013

Math
1). How many shelves each 2 3/4 feet in length can be cut from a piece of lumber that is 15 2/3 feet long?
February 3, 2013

Chemistry
What mass of CH4 is contained in a 443 mL sample of CH4 at −32◦C and 282 torr? Answer in units of g. I tried so many times and I don't get it!
January 16, 2013

Urgent language arts
True of false 1. In a persuasive essay, the thesis statement should represent an opinion. A. True B. False 2. The most common structure of a persuasive essay is A. Order of importance B. Chronological order C. Problem and solution 3. Which of the following is NOT a sentence A...
December 17, 2012

trig
If tan y = -4/3 and y is in Q I'VE find cos 2y
November 27, 2012

trig
If tan y = -4/3 and y is in Q I'VE find cos 2y
November 27, 2012

math
a ship sail S 40 degrees W four 4 hours how do i figure out this question
November 27, 2012

math
A ship sail S 40 degrees W for 4 hours at 30 kph. make a scale drawing
November 26, 2012

Physics A
how much work is being done a bookshelf being pulled 5 meters at an angle of 37 degrees from the horizontal? The magnitude of the component of the force that does the work is 43 Newtons
November 21, 2012

Physics
An airplane flies due north at 260 km/h with respect to the air. There is a wind blowing at 60 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?
October 25, 2012

Physics
An airplane flies due north at 260 km/h with respect to the air. There is a wind blowing at 60 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?
October 25, 2012

Algebra
write the standard form of the equations: through (1,3) and (-4, -4) through (5,4) and parallel to y=4
October 25, 2012

Algebra
write the following in standard form: slope= 2/3 y- intercept= 3
October 24, 2012

5th grade word problems
5 3 -- * -- 100 x 5x=300 x=60 1. put 5 over 100, oranges over oranges. And 3 over X. glasses over glasses 2. cross multiply, 5*x and 100*3 3. divide both sides of the equation by 5 to get x by it's self. 4. X=60, you can make 60 glasses with 100 oranges
October 24, 2012

3rd grade math HELP ASAP
373
October 24, 2012

3rd grade math
78
October 24, 2012

Science
oh I get it now, thank you
August 23, 2012

Science
um sorry but Ms.Sue it's not supposed to be the separate functions but how it all ties together
August 23, 2012

Science
I have this last question left and I'm stuck!!! Explain how cell organelles are similar to a factory. Must be 1/2 a page.
August 23, 2012

math
Grapes cost $2 per pound. How much does the given amount cost? 0.25 pounds.
August 19, 2012

math
There are a total of eight possible outcomes for three coins: HHH, HHT, HTH, THH, TTH, THT! HTT, TTT. Out of these eight outcomes, seven of these show at least one tail (all except HHH). After counting, we find that six of these seven outcomes have at least one head, so the ...
July 26, 2012

Math
Factor the polynomial completely. 6x^3 + 36x^2 - 240x
May 18, 2012

Science
The sun emits billions of watts of light,heat,and energy ever second. How much of this light,heat, and energy does the Earth benefit from?
March 28, 2012

calculus
FInd the area of the region bounded by the graphs of y= 3x^2+1 , y=0, x=-2.7, x=2.5
March 1, 2012

8th grade math
what does the problem look like?
March 1, 2012

math
12+ 2n=60 48= 2n 24= n :)
March 1, 2012

Math
(n-14)/ 12 = 248 n-14= 2976 n= 2990
March 1, 2012

math
make sure the ratio of the dimensions stays the same. say if you had a 3 x 4 picture you could change the dimensions to 6 x 8 and because they are the same ratio the image should not be distorted.
March 1, 2012

Physical Education
I have the ability to watch it, I'm just not allowed to because we have a bandwith limit.
February 23, 2012

Physical Education
That's the thing, the program doesn't /have/ an online teacher.
February 23, 2012

Physical Education
1. Aerobic activities can be done for an extended period of time and supply oxygen to your muscles. Such activities help develop _______________________. 2. You can change your _______________________ by exercising regularly and eating healthfully. 3. The ...
February 23, 2012

Pre Calc
A plumber charges $40 per hour for labor with a minimum labor charge of $30. For example, if she does her repairs in only 0.2 hours, then $40*0.2=$8, which is less than the minimum, so she would charge $30 for labor. We will assume she can repair any problem in one day – ...
February 6, 2012

math
mae has a oval racetrack. 2 curves, each is 1/2 of the circle and each on a radius of 21". 2 straight-aways connect the circle and are 46" long. what is the total distance around the circle?
January 26, 2012

math
mae has a oval racetrack. 2 curves, each is 1/2 of the circle and each on a radius of 21". 2 straight-aways connect the circle and are 46" long. what is the total distance around the circle?
January 26, 2012

Mixed numbers and improper fractions
125/12
January 25, 2012

Math
Does anyone know the answer to the math riddle "Did you hear about..." the answer is 12 words and it's pg 167.
December 6, 2011

chemistry
A reaction occurs where the concentration of reactant A changes from 0.74 moles/liter to 0.63 moles/liter in 20 seconds. what is the average rate of reaction?
November 17, 2011

social studies.
15. What was a result of WWII on women’s rights in the US? A.Women were greatly oppressed and suffered setbacks B.Women lost the vote during wartime C.Opportunities for women increased D. None of the Above I believe its C ? 16. What happened with most of the working women...
November 7, 2011

geometry
solve this proof: PR is congruent to DE, PT is congruent to DF, Angle R is congruent to Angle E, Angle T is congruent to Angle F.. Prove Triangle PRT is congruent to Triangle DEF
November 6, 2011

chemistry (please help)
A 2.8-L engine in a vehicle with air-conditioning uses 26.5-L of coolant. If the coolant has a density of 1.11 g/ml, what mass does the coolant add to the vehicle?
September 6, 2011

geometry
If the length of a rectangle is twice its width, w, write an expression to represent the perimeter of the rectangle. If the perimeter of the rectangle is 72 inches, what is the length and width of the rectangle?
September 6, 2011

Algebra
What is 3y^2-27? Explain please.
July 25, 2011

Math-geometry
Do it yourself.
July 13, 2011

math
1. Consider the function f(x) = x3 + 7x2 + 2x - 40 . a. Find the possible rational roots of f(x) = 0. b. Use synthetic division to divide f(x) by x - 2. Show all your work. Use your answer to explain whether or not x – 2 is a factor of f(x). c. Factor f(x) completely. ...
June 6, 2011

chemistry
what sample size of .9181M vinegar would require 27.50 mL of .5185M of NaOH for neutralization?
April 13, 2011

science
what is the dencity of an object that has a mass of 92 grams and a volume of 40 milliliters? ~thx!
March 31, 2011

math
7x^2-20x=3
March 16, 2011

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