Tuesday
September 23, 2014

Posts by heather


Total # Posts: 970

Physics
A glider of length 10.1 cm moves on an air track with constant acceleration. A time interval of 0.732 s elapses between the moment when its front end passes a fixed point circled A along the track and the moment when its back end passes this point. Next, a time interval of 1....
September 16, 2014

algebra
Find the standard form for the equation of a circle (x−h)^2+(y−k)^2=r^2 with a diameter that has endpoints (−8,−10) and (5,−4). Find the h= -1.5 k= -7 r=? I do not understand how to find the radius.
September 14, 2014

Quantitative Reasoning (math)
Your weight on the moon is relative to your weight on Earth. Neil Armstrong weighed 360 lbs. in his moon gear while on Earth, but on the moon he only weighed 60 lbs. What is the ratio of the Earth weight to the moon weight? How much would you weigh (approximately) on the moon?
September 11, 2014

Quantitative Reasoning (math)
One out of every five people who buys ice cream buy vanilla ice cream. If a store sells 125 ice cream cones in one day, about how many will be vanilla? I know how to solve the proportion once I set it up, but I cant figure out how to set it up
September 10, 2014

Algebra
The length of a rectangle is 1 foot less than twice the width, and the area of the rectangle is 21 ft.². Find the dimensions of the rectangle
September 7, 2014

Precalculus/Trig
I can't seem to prove these trig identities and would really appreciate help: 1. cosx + 1/sin^3x = cscx/1 - cosx I changed the 1: cosx/sin^3x + sin^3x/sin^3x = cscx/1-cosx Simplified: cosx + sin^3x/sin^3x = cscx/1-cosx I don't know where to go from there. 2. (sinx + ...
August 15, 2014

Precalculus/Trig
Prove the following identity: 1/tanx + tanx = 1/sinxcosx I can't seem to prove it. This is my work, I must've made a mistake somewhere: Converted 1/tanx: 1/sinx/cosx + sinx/cosx = 1/sinxcosx Simplified 1/sinx/cosx: cosx/sinx + sinx/cosx = 1/sinxcosx Found common ...
August 14, 2014

Math
Sorry- it was 1/3c = 6b^2 + 2. I can see your way of substituting, though!
August 4, 2014

Math
Actually, just did it again and got (D). However, it's an SAT question and I need the fastest way to solve it... what I did was plug in values for a and b (3 and 2, respectively) then find c (78) and plug a (3) back into each of the choices to see if c (78) and the answer ...
August 4, 2014

Math
If 2a = 3b, 1/3c = 6b^2, and b > 0, what is c in terms of a? The answer choices are: (A) 8a^2 + 6 (B) 8a^2 + 12 (C) 12a^2 + 6 (D) 18a^2 + 6 (E) 18a^2 + 12 Thank you!
August 4, 2014

SP180.1.2 Principles of Public Speaking
i need help with my outline. not sure where to go. i am at a complete loss i know i want my topic to be Why banning the use of cell phones while driving should be mandatory nationwide I. TITLE: Why banning the use of cell phones while driving should be mandatory nationwide A. ...
June 12, 2014

personal finance
If Bridgette marrow is a sophomore at state college ad is running out of money. wanting to continue her education, Bridget is considering a student loan. Explain her options. How can she best minimize her borrowing costs and maximize her flexibility?
June 8, 2014

algebra 2 and Trigeonomerty
a bag contains 12blue, 10 green and 6 red and 2 white marbles. a) If you draw 3 marbles without putting them back, what is the probability that all 3 are blue? 12/30 * 9/27 =0.133? b) If you draw 2 marbles without putting them back, what is the probability that neither is blue...
May 27, 2014

Economics help please!!!
In a specific industry, two dominant firms work together to set prices. We call this A. competition. B. collusion. C. market dominance. D. market influence. Answer this Question
May 22, 2014

Economics
Im thinking A. Am i correct?
May 22, 2014

Economics
Unemployment is on the rise though inflation is quite low. Gross Domestic Product is rising but more slowly than the goal rate. The Federal Reserve may buy government securities in open market operations in order to A. increase the money supply and encourage economic growth. B...
May 22, 2014

math
The test scores for a math class are shown below 83,85,82,93,83,84,95,87,86,94 what is the standard deviation of the data set?
May 19, 2014

math
there are 4 blue tile,s 3 yellow tiles, 5 red tiles, and 2 green tiles. he draws a tile replaces it, and draws another tile. what is the probability he will draw a blue tile on both
May 19, 2014

math
In triangle PQR, m<P=53 degrees, PQ=7.4, and PR=9.6. What is m<R to the nearest degree
May 19, 2014

Math Question
Find an equation that models a hyperbolic lens with a=16 inches and foci that are 40 inches apart. Assume that the center of the hyperbola is the origin and the transverse axis is vertical
May 19, 2014

Algebra help please!
Suppose you are researching the eating habits of people your age. What sampling method could you use to find the percent of students in your grade who eat five servings of fruit and vegetables each day? What is an example of a survey question that does not have bias?
April 14, 2014

math
Find the scale factor troy will to build his pool. The width is 625cm. The olympic pool is 50m long and 25m wide. Then find the length using the scale factor of troy pool
April 13, 2014

Chemistry
The final answer I got was NO + 3Cu^2+ + 4OH^- --> NO3- + 3Cu^+ + 2H2O Which was right. Thank you very much for your help.:)
April 9, 2014

Chemistry
So would this be right then NO + 2H2O + 3Cu^2+ + OH^- ---> 3Cu^+ + NO3^- + 4H^+ +OH^-
April 9, 2014

Chemistry
For a particular redox reaction NO is oxidized to NO3^- and Cu^2+ is reduced to Cu^+ . Complete and balance the equation for this reaction in basic solution. We are given this as a guide to start NO + Cu^2+ --> NO3^- + Cu^+ I started with: Cu^2+ + 2e- --> Cu No + 2H2O...
April 9, 2014

Geometry
#19. Given a regular octagon, find the measures of the angles formed by (a) two consecutive radii and (b) a radius and a side of the polygon.
April 8, 2014

Geometry
#7. Find the area of a polygon with the vertices of (-4,5), (-1,5), (4,-3), and (-4,-3).
April 7, 2014

physics
I have no idea that's why I came to this website
April 3, 2014

Geometry
The glide reflection Ry--x degree T <4,1> maps the P to (4,3). Find the coordinates of P. Please help I'm really confused.
March 31, 2014

Geometry
Thank you Steve.
March 27, 2014

Geometry
Given the lengths of the sides of a triangle, identify the triangle as acute, right, or obtuse. 37,12,34 5,12,13 20,21,28
March 27, 2014

algebra
y/4=15/20 how do I solve the proportion? please explain it to me. I have several to do
March 20, 2014

ratio
given the proportion a/b=5/19, what ratio completes the equivalent proportion a/5= / ? a. a/19 b. b/19 c. 5/19 d. 19/b
March 19, 2014

chemistry
If a tank contains 55.2 g of butane, what volume, in liters, of oxygen is needed to burn all the butane at 0.850 atm and 25 degrees Celsius? Need to show work too.
March 19, 2014

Earth science
The greenhouse effect is a result of A. consumption of fruits and vegetables that produce a biofuel. B. absorption and radiation of energy in the hydrosphere. C. absorption and radiation of energy in the atmosphere. D. consumption and radiation of energy in the atmosphere. D?
March 13, 2014

Earth science
1. Which of the following is not a natural cause of climatic change? A. Earth's tilt B. Solar activity C. Human activity D. Volcanic activity I think it is C
March 13, 2014

Algebra - Functions
Aaron is a salesman that earns a base salary of $1,200.00 per month and a commission of 5% on the amount of sales he makes. One month Aaron received a paycheck for $1,811.00. Find the amount of his sales for the month.
March 12, 2014

math
in the rhombus angle 1=140. what are angle 2 and angle 3? a. angle 2=140, angle 3=20 b. angle 2=40, angle 3=70 c. angle 2=40, angle 3=20 d. angle 2=140, angle 3=70
March 10, 2014

social studies
The Louisiana economy as were the economies of several other states was based on plantation slavery and there were no more slaves to raise cotton and other crops such as sugar cane. The people of Louisiana lost all of their money during the war so capital was also scarce. And ...
March 9, 2014

Math
What is an equation in slope-intercept form for y(-4,-2) and x (5,1)?
March 9, 2014

Math
Is the line through points P(3,-5) and Q(1,4) parallel to the line through points R(-1,1) and S(3-3)? Explain please.
March 9, 2014

chemistry
What mass of bromine gas will form from the complete reaction of 150 g potassium bromide and 120 g of chlorine
March 8, 2014

Math
Use roster notation to create and write two proper subsets of your original set. 3. Do the following and write your answers in roster notation. •Find the union of the sets. •Find the intersection of the sets. •Find the complement of each of the sets.
February 28, 2014

physics
Milk with a mass of 0.021 kg and a tempera- ture of 13C is added to 0.12 kg of coffee at 94C. What is the final temperature? Assume the specific heat capacities of the two liquids are the same as water, and disregard any energy transfer to the liquids’ ...
February 11, 2014

Math
Steve can run 3.5 miles in 30 minutes. If Steve increases his rate by 1/2 mile per hour, how far will he run in 2 hours?
January 27, 2014

American National Gov.
The American bureaucracy conjures up the following images except cumbersome “red tape.” civil servants who are inefficient, unresponsive, and unhelpful. officials who have amassed power and who act against the rights of citizens. a system that can act quickly in a ...
January 26, 2014

American History
I also choose B
January 26, 2014

American National Gov.
I'm sorry I didn't know how this board worked so I am going back and giving the best answers I can
January 26, 2014

American National Gov.
I think it's D but not 100% sure
January 26, 2014

American National Gov.
For Max Weber, the bureaucracy was the highest form of rationality because bureaucrats would become cogs in the wheel. it was impersonal. it was personal. it was ordered by impartial rules or laws
January 26, 2014

American National Government
Thanks I went back to my text the answer is A
January 26, 2014

American National Government
I believe the answer is A
January 26, 2014

American National Government
Theodore Lowi suggested the remedy for cumbersome bureaucracy was returning to juridical democracy. delegating even more authority. reducing the size of government. throwing money at the problem.
January 26, 2014

American National Government
The 2000 presidential election is an example of where it is possible to win the popular vote but not have a majority vote in the Electoral College. become President by losing both the Iowa Caucus and the New Hampshire Primary. become President without having a recount of ...
January 26, 2014

American National Government
I just read the definitations for these and I think A is the answer plaes let me know if it makes sense
January 26, 2014

American National Government
The tendency of Congress to defer to the President in foreign policy has at times led to an American dictatorship. a plebiscitary presidency. an imperial presidency. active-positive presidents
January 26, 2014

EMT basic
You and your partner are returning a patient from the Emergency Department to the local nursing home in an ambulance. Your partner is attending to the patient and you are driving. You put the radio on your favorite music station and crack the windows to let the crisp winter ...
January 18, 2014

Algebra 2 help.
For the function f(x)=(3-4x)^2, find f^-1. Determine whether f^1 is a function.
January 14, 2014

Stuck on this Algebra 2 question!
what is the solution of the system of equations? 2x+2y+3z=-6 3x+5y+4z=3 2x+3y+4z=-10
January 11, 2014

Anyone want to help me?
Solve the equation or formula for the indicated variable. s=6r^5t for t
January 10, 2014

help!!!!
Combine like terms. What is a simpler form of the expression. -3(-y-2)+5y
January 10, 2014

Finance
Now that you have a full time job you are ready to start investing for retirement. Your corporation will match 50 cents of each dollar that you put in your 401K account up to the first $7,000. You have altogether $15,000 that you can afford to save this year. How should you ...
December 19, 2013

math
6-mile perimeter. The length is 4 times the width.what is the length width
December 11, 2013

volcanoes
what supplies do you need to make a volcanoes lava if you were to make a volcano. What would be the best thing to use to make a volcano?
December 9, 2013

Science help,please...
I am just kidding. What grade stuff is this?
December 9, 2013

Science help,please...
What grade are you in and are you cheating?
December 9, 2013

Chemistry
Sodium vapor lamps are often used in residential street lighting. They give off yellow light with a frequency of about 5.91 × 1014 Hz. What is this wavelength in nm?
November 20, 2013

chemistry
Thank you
November 20, 2013

chemistry
Potassium metal, K, is more reactive than sodium, Na. Calcium, Ca, is less reactive than sodium. The comparative reactivity of these metals is K > Na > Ca. Explain the reactivity differences of K, Na and Ca based on their atomic structure.
November 20, 2013

chemistry
First off, how do you eve find out if it would be colored or colorless? Will aqueous solutions of the following salts be colored or colorless? Explain. a. Titanium (II) chloride b. Beryllium chloride c. Tin (II) nitrate d. Iron (III) nitrate
November 20, 2013

Chemistry
The most chemically reactive metal elements are the alkali metals. They react spontaneously with water or other substances in the atmosphere and must be stored under oil. a. What type of reactions will these metals undergo? b. Explain why these metals are so reactive in the ...
November 19, 2013

chemistry
The letters CHEMISTRY were spray painted in blue paint on the snow. After a while the sun comes out and the snow under the blue paint melts while the snow around the letters do not. Why did the snow under (rather than around) the blue paint melt?
November 19, 2013

Math
a parking lot can allocate 3 compact car spaces for every 2 spaces for full sized cars. if part of the lot has space for 40 full sized cars, how many compact cars could it hold if the parking lines were redrawn?
November 13, 2013

Math
Find the missing sides of the similar triangles ABC and DEF. AC=2 AB=5 CB=? DF=4 FE=8 DE=?
November 13, 2013

Math
Explain why the lengths of the corresponding sides of rectangles ABCD and EFGH vary proportionally. I cant post the picture of the triangles but the length of the first triangle DA=44 and the width AB=88. The second triangles length HE=35 and width EF=70
November 13, 2013

Math
Solve the proportion: 2/3 = 8/x-1
November 13, 2013

Math
Solve the proportion: x/20 = 5/8
November 13, 2013

chemistry
given 10.8 grams of substance y,if the substance absorbs 231 kilojoules of energy and the specfic heat of substance is 6.55 J/g*0C what is the heat change
November 7, 2013

math
the total capacity of 1 carton is the same as the total capacity of 2 identical cups. If 1.8 liters of water are needed to fill up 3 identical cups and 2 identical cartons, what is the capacity of a cup? express your answer correct to 2 decimal places
October 17, 2013

Physics
A person pushes on a 56-kg refrigerator with a horizontal force of -251 N; the minus sign indicates that the force points in the −x direction. The coefficient of static friction is 0.7. (a) If the refrigerator does not move, what are the magnitude and direction of the ...
October 2, 2013

Physics 2
A 3.0-g string, 0.14 m long, is under tension. The string produces a 200-Hz tone when it vibrates in the third harmonic. The speed of sound in air is 344 m/s. Find the tension in the string.
September 29, 2013

math
Lisa runs 6 miles in 55 minutes, at the same rate, how many miles would she have ran in 44 minutes?
September 16, 2013

Physics
Suppose that the gravitational acceleration on a certain planet is only 3.1 m/s2. A space explorer standing on this planet throws a ball straight upward with an initial velocity of 35 m/s a) What is the velocity of the ball 4 seconds after it is thrown? m/s (b) How much time ...
September 7, 2013

child day care
first founded as a parent cooperative, is/are one of the best examples of successful early childhood school-family partnership.
August 22, 2013

world history
identify and describe two ways in which American federalism has changed since the ratification of the constitution
August 7, 2013

Math
-7(2a2-4) Multiply
August 4, 2013

MATH
but when h is 0 t=0....
July 19, 2013

MATH
Given that logbase2 a+logbase2 b=3 , calculate all the possible integer values of a if b is also an integer value. Explain your reasoning.
July 15, 2013

MATH
Given that x=logbase3 5 and y=logbase3 2 , rewrite logbase3 60 in terms of x and y.
July 15, 2013

algebra
change pints to gallons. 1 1/2 pints = 3/16 gallon 3/16 x _____ = ____ create proportion. 6^3 24^3 6^3 * x = 24^3 * 3/16 216 * x = 13824 * 3/16 simplify 216 * x = 2592 divide both sides by 216 x = 12 gallons
June 17, 2013

Physics
A car is stopped at a traffic light. When the light turns green, the driver accelerates so that the car is going 10 m/s after 5s. What is the car’s average acceleration?
June 3, 2013

Aviation
Does the engine of a Cessna 162 have an alternate air source? How many fuel pumps does the Cessna 162 have? Your help is very much appreciated!
May 31, 2013

ashford university
Use two commas around “extra information” in a sentence to show that it is not important to the meaning of that sentence if taken out. For example: “The hardware store down the street, which had been paved recently, is open until midnight five days a week.”
May 17, 2013

HCS/212
7. Have you personally or professionally noticed any changes in the way health care information or services are researched or accessed? Explain your response. 8. Are you finding that there is an increase or a decrease in options for finding or researching information about ...
April 28, 2013

algebra
Complete the following word problems. 14.It takes 9 hours for Isabella to rake leaves by herself,but her brother Matthew can work three times as fast.If they work together, how long will it take them to rake leaves? Rate Time Work Done Isabella Matthew
April 24, 2013

Chemistry
What are the healthcare applications of biochemical, pharmaceutical and diagnostic chemical reactions?
April 18, 2013

Calculus 3
wow thank you! How did you find the limits for x and y?
April 5, 2013

Calculus 3
Let G be the region in the first octant that is inside both the cylinders x^2+y^2=1 and y^2+z^2=1. Use a triple integral to evaluate the volume of G.
April 5, 2013

Calculus 3
The following parametric equations describe a portion of a shperical surface: x=4cosusinv y=4sinusinv z=4cosv where 0<=u<=pi/4 and 0<=v<=pi/2 Find the surface area of this portion of the sphere.
March 30, 2013

c-justice 200
Should judicial review be eliminated? Provide a detailed explanation for your answer. b) If judicial review were eliminated, what alternative means could be used to interpret the meaning of the Constitution?
March 27, 2013

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Next>>

Search
Members