Wednesday
December 7, 2016

# Posts by ANDREA

Total # Posts: 837

Math
Write the perfect squares that are greater than 70 and less than 120.
May 18, 2011

algebra
A gardener wants to create a triangular garden in the shape of a right triangle with shortest side length x – 2y ft. and the middle length side x + 4y ft. What is an algebraic expression for the area of the garden? Be sure to multiply this out and express in simplest ...
April 28, 2011

Algebra 2
If a 20 in. by 30 in. picture has a wooden frame "x" in. wide surrounding it, which equation can be used to find the total area of the picture and frame?
April 26, 2011

childcare
HERE R THE CORRECT ANSWERS; 1-D PAGE25 2- 3-B PAGE18 AND 19 4- 5-C PAGE15 6-A PAGE 30 7- 8- 9-D PAGE 21 10- 11-B PAGE 20 12-C PAGE 10 13-B PAGE 10 14- IM NOT REALLY SURE BCZ IN PAGE 19 SPECIFY THAT CHILDREN OF AGE 6TO 8 THEY CAN TAKE CARE OF THEIR OWN PERSONAL NEEDS BUT ON THE...
April 14, 2011

Statistics
z Score: When Reese Witherspoon won an Oscar as Best Actress for the movie Walk the Line, her age was converted to a z score of -0.61 when included among the ages of all other Oscar-winning Best Actresses at the time of this writing. Was her age above the mean or below the ...
April 8, 2011

Statistics
America Online occasionally conducts online polls in which Internet users can respond to a question. If a graph is constructed to illustrate results from such a poll, and the graph is designed objectively with sound graphing techniques, does the graph provide us with greater ...
April 8, 2011

Statistics
Unauthorized Downloading: A Harris Interactive survey involved 1644 people between the ages of 8 years and 18 years. The accompanying table summarizes the results. Does this table describe a relative frequency distribution? Why or why not? Downloaded Material Percent Music 32...
April 8, 2011

Statistics
The production of ages at inauguration of all U.S. Presidents who had professions in the military is 62, 46, 68, 64, 57. Why does it not make sense to construct a histogram for this data set?
April 8, 2011

Statistics
In an editorial, the Poughkeepsie Journal printed this statement: "The median price--the price exactly in between the highest and lowest--..." Does that statement correctly describe the median? Why or why not?
April 8, 2011

Statistics
When the Indianapolis Colts recently won the Super Bowl, the numbers on the jerseys of the active players were 29, 41, 50, 58, 79,..., 10 (listed in the alphabetical order of the player's names). Does it make sense to calculate the mean of those numbers? Why or why not?
April 8, 2011

geometry
what measure of an exterior angle of a hexagon? a)45 B)60 C)120 D)150
April 7, 2011

Biology . Ahh , help me with this question please
summarize how unicellular organisms may have given rise to the first animals ? Please , & thank you(:
April 7, 2011

my daughter came home with input/output table don't understand how to do it Input Output 4 33 5 36 11 54 16 69
April 5, 2011

Math
The capacity of a measuring pitcher is 96 fluid ounces. How many quarts can the pitcher hold?
March 14, 2011

Calculus
the height of an object thrown on the surface of a certin planet is s(t)=80t-16t^2. what is the velocity? what is the acceleration? when is the velocity zero?
March 14, 2011

Chemistry
0.05 L
March 9, 2011

Math
Alicia went on a steamboat ride up the Mississippi River. The boat travels 24 miles per hour in still water. How long will it take her to travel 48 miles upstream if the current of the river is 8 miles per hour?
March 7, 2011

social studies
what are two homework questions about pope leo III????
March 6, 2011

yeah the graph they gave me was triangle shape was above the x-axis. the two ends of the legs are touching the x-axis but does not cross all the way to the negative side.
March 1, 2011

Physics
In a velocity vs. time graph, the graph illustrates a triangle shape. A. why might a smart student say the object reverses direction? B. why might a smart student say the object doesn't reverse direction? C. Does the object reverse direction? Explain why.
March 1, 2011

In a velocity vs. time graph, the graph illustrates a triangle shape. A. why might a smart student say the object reverses direction? B. why might a smart student say the object doesn't reverse direction? C. Does the object reverse direction? Explain why.
March 1, 2011

science
how do i figure out the science metric conversion of .003 m = mm?
February 27, 2011

science
what is the answer to the problem .003m = mm?
February 27, 2011

physics
The International Space Station, launched in November 1998, makes 15.65 revolutions around the earth each day in a circular orbit. Apply Newton's second law to the space station and find its height (in kilometers) above the earth's surface.
February 23, 2011

Chemistry - Enthalpy change and stoichiometry
how to calculate enthapy change of products
February 23, 2011

English
Is there euphony, cacophony, onomatopoeia in the poem Phenomenal Woman by Maya Angelou? Examples are needed.
February 22, 2011

physics
One of the tenets of the pseudoscience (i.e., "false science") of astrology is that, in some mysterious way, the positions of the planets at the time of a person's birth somehow influence the characteristics of that person. To see if this proposition seems ...
February 22, 2011

physics
A block slides a distance d down a frictionless plane and then comes to a stop after sliding a distance s across a rough horizontal plane. What fraction of the distance s does the block slide before its speed is reduced to one-third of the maximum speed it had at the bottom of...
February 22, 2011

physics
Consider two frictionless inclined planes with the same vertical height. Plane 1 makes an angle of 25.0 degree with the horizontal, and plane 2 makes an angle of 55.0 degree with the horizontal. Mass m_1 is placed at the top of plane 1, and mass m_2 is placed at the top of ...
February 22, 2011

physics
Which of the following statements about work is or are true? (More than one statement may be true.) A. Negative net work done on an object always reduces the object's kinetic energy. B. If the work done on an object by a force is zero, then either the force or the ...
February 22, 2011

physics
A 15.0 kg stone and a 150 kg stone are released from rest at the same height above the ground. There is no appreciable air drag. Which of the following statements is or are true? (More than one statement may be true.) A. Both stones have the same initial gravitational ...
February 22, 2011

physics
A 1.00 g grasshopper and a 0.100 g cricket leap vertically into the air with the same initial speed in the absence of air drag. Which of the following statements must be true? (More than one statement may be true.) A. The grasshopper goes 10 times as high as the cricket. B. ...
February 22, 2011

physics
Two balls having different masses reach the same height when shot into the air from the ground. If there is no air drag, which of the following statements must be true? (More than one statement may be true.) A. Both balls left the ground with the same speed. B. Both balls left...
February 22, 2011

college
Given that the distance from the earth to the sun is 1.5 times 10 to the power m and the
February 16, 2011

statistics
An urn contains 4 blue balls, 5 yellow balls and 7 red balls. if a single ball is selected, find the probability thet the ball is Red? Not blue? blue or yellow
February 15, 2011

algebra
The number of Hybrid vehicles sold weekly at a local car lot increased from 11 in 2006 to 19 in 2008. Predict the number of Hybrid vehicles sold weekly in 2011. My answer: rate = 19 - 11 2008 - 2006 rate = 8 2 rate = 4 then I subtracted 2011 from 2008 got 3 and multiplied that...
February 15, 2011

chemistry
Thanks for helping :) I understand that part, but I don't get in what direction each of the conditions listed above would the equilibrium shift to and how the colour would change.
February 15, 2011

chemistry
When varsol and iodine in potassium iodide aqueous solution is mixed, two phases form. What are the colours in each of the 2 phases when 2ml of I2/KI aqueous solution plus 2 ml of varsol are mixed in a test tube? What are the colours in each of the 2 phases when each of the ...
February 15, 2011

algebra
How do I find the slope of each of the three line segments 3,6,9 not on a straight line. then which two points is the slope the largest?
February 13, 2011

algebra
Find the slope of each of the three line segments. Between which two points is the slope the largest? 0 to 3 to 6 to 9 not a straight line.
February 13, 2011

algebra
on a graph starting at 0 and sloping up to 480 on total # of words typed and 16 time in mins. Hannahs typing ability Kerry can type the same # of words in half the time. a)what rate does Hannah type? b)what rate does Kerry type? c)How many words can Kerry type in 8 mins?
February 13, 2011

math
The the Hanson's have reduced the average number of hours they watch tv each day from 5.5 hrs. in march to 2.5 hrs. in june. Find the rate of change in average number of hrs. they watch tv each day. I think the answer is rate = 5.5 - 2.5/3 rate = 3/3 rate = 1 hr. is this ...
February 13, 2011

geometry
If the degree measures of the angles of a triangle are represented by x,y,x+y the triangle must be??
February 10, 2011

algebra
y = -4x -2 find the y coordinates of the points (1),(-1),(-3).
February 8, 2011

algebra
y = -4x - 2 find the coordinates of the points (1),(-1),(-3).
February 8, 2011

algebra
(2/3)((7/8)-4x)-5/8=3/8
February 6, 2011

algebra
Math Magicians charges $45 registration fee plus$30 per hour for tutoring. Math Master charges $25 registration fee plus #35 per hour tutoring fee. How many hours per tutoring would it take to make Math Magicians cheaper than Math Master? February 5, 2011 physics multiple choice Far from any gravity, an astronaut accidentally releases a metal wrench inside a spaceship that is traveling at a constant velocity of 250 km/s away from earth in outer space. What will be the subsequent behavior of that wrench as observed by the astronaut? A. It will fall to ... February 2, 2011 physics multiple choice A worker pushes horizontally on a 2000 N refrigerator on a kitchen floor with a force of 28.0 N. A. If the refrigerator moves forward, this person feels it pushing back with less than 28.0 N. B. The person always feels a 28.0 N push from the refrigerator. C. The person feels ... February 2, 2011 physics A. What is the mass of a book that weighs 3.20 N in the laboratory? B.In the same lab, what is the weight of a dog whose mass is 14.0 kg? February 2, 2011 physics A box rests on a frozen pond, which serves as a frictionless horizontal surface. If a fisherman applies a horizontal force with magnitude 44.0 N to the box and produces an acceleration of magnitude 2.80 m/s^{2}, what is the mass of the box? February 2, 2011 physics A warehouse worker pushes a crate along the floor, as shown in the figure , by a force of 10.0 N that points downward at an angle of 45.0 degree below the horizontal. A. Find the horizontal component of the push. B.Find the vertical component of the push. February 2, 2011 physics multiple choice A person pushes horizontally with constant force P on a 230 N box resting on a frictionless horizontal floor. Which of the following statements about this box is correct? A.The box will accelerate no matter how small P is. B. The box will not accelerate unless P > 230 N. C... February 2, 2011 physics multiple choice A 3.00 lb. physics book rests on an ordinary scale that is placed on a horizontal table. The reaction force to the downward 3.00 lb force on the book is A. an upward 3.00 lb force on the scale due to the table. B.an upward 3.00 lb force on the book due to the scale. C.an ... February 2, 2011 physics multiple choice A force F is required to push a crate along a rough horizontal floor at a constant speed V with friction present. What force is needed to push this crate along the same floor at a constant speed 3V if friction is the same as before? A. A constant force 3F is needed. B. A force... February 2, 2011 physics A Ferris wheel with radius 14.0 m is turning about a horizontal axis through its center, as shown in the figure below. The linear speed of a passenger on the rim is constant and equal to 6.00 m/s. A.What is the magnitude of the passenger's acceleration as she passes ... February 2, 2011 physics You swing a 2.00 kg stone in a circle, using the full length of a thin 80.0 cm rope. At what speed should you swing it so its acceleration will be 9.8 m/s^2? February 2, 2011 physics You swing a 2.00 kg stone in a circle, using the full length of a thin 80.0 cm rope. At what speed should you swing it so its acceleration will be 9.8 m/s^2? February 2, 2011 child day care wao, those answer r really sucky! heres mines 1-D 2- 3-B 4- 5-C 6-A 7- 8-C 9-D 10- 11-B 12-C 13-B 14 15- 16-A 17- 18-C 19- 20-B THESE R ALL BY THE SAME ORDER THAT APPEARS ON THE STUDY UNIT GOOD LUCK! =) February 1, 2011 stats a) Explain the difference between sampling error and no sampling error. January 31, 2011 Urgent!!! Physics A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.60 km, 1.25 km), and 1.12 s later its has moved to point B with coordinates (6.16 km, 0.900 km). A. Find the x component of its average velocity between A and B. (in Km/s) B. Find... January 26, 2011 Urgent!!! Physics At an air show, a jet plane has velocity components Vx = 625 and Vy = 415 at time 3.85s and Vx = 838 and Vy = 365 at time 6.52s . A. For this time interval, find the x component of the plane's average acceleration in km/h2. B. For this time interval, find the y component ... January 26, 2011 physics A brick is released with no initial speed from the roof of a building and strikes the ground in 1.50 {s}, encountering no appreciable air drag. A. How tall, in meters, is the building? B.How fast is the brick moving just before it reaches the ground? January 26, 2011 physics A meterstick is held vertically above your hand, with the lower end between your thumb and first finger. On seeing the meter stick released, you grab it with those two fingers. You can calculate your reaction time from the distance the meterstick falls, read directly from the ... January 26, 2011 physics An object is thrown up at an angle of 40.0 degree above the horizontal and reaches a maximum height H. If the angle is now doubled to 80.0^degree, but nothing else is changed, its maximum height will be a. 1.67 H. b. 2.00 H. c. 2.35 H. d. 4.00 H. January 25, 2011 physics A cannonball is fired horizontally from a 240 {m}-high cliff toward a vertical building 720 {m} away with an initial velocity of 120 {m/s}. When the ball will hit the building? in a. 7.00 {s} b. 6.00 {s} c. less than 6.00 {s} d. more than 7.00 {s} January 25, 2011 physics Problem: A sample of liquid has amass of 1.04 kg and a volume of 1300 ml. If the mass of the sampleis to be increased by 70 g by adding more of the same kind kind ofliquid, what volume of liquid must be added? Solution given: 1) 1040/1300=.80 2) 70/.80=88 1. Give an ... January 24, 2011 physics Problem: Two blocks of metals have the same mass. The first block has a volume of 827 cm^3 and a density of 4.50g/cm^3.Thesecond block has a volume of 193cm^3. What is the density of thesecond block ? Solution: (1) 4.50x827=3720 (2)3720/193=19.3 1. Give an interpretation ( not... January 24, 2011 physics Problem: Two blocks of metals have the same mass. The first block has a volume of 827 cm^3 and a density of 4.50g/cm^3.Thesecond block has a volume of 193cm^3. What is the density of thesecond block ? Solution: (1) 4.50x827=3720 (2)3720/193=19.3 1. Give an interpretation ( not... January 24, 2011 physics Problem: A sample of liquid has amass of 1.04 kg and a volume of 1300 ml. If the mass of the sampleis to be increased by 70 g by adding more of the same kind kind ofliquid, what volume of liquid must be added? Solution given: 1) 1040/1300=.80 2) 70/.80=88 1. Give an ... January 24, 2011 physics B. You can get 28 oz of spicy pretzels for$4.40, or you can get 16 oz of regular pretzels for \$2.30. 1. Which is a better deal? Explain your reasoning. 2. How much would 16 oz of the spicy pretzels cost, assuming the same price per ounce?
January 24, 2011

physics
A. There are 28 g of salt dissolved in 400 ml of water. Consider the quantity 0.07 = 28/400. 1. Give the name of the quantity if there is one. 2. What is the interpretation of . 07 g in this context? 3. Use the interpretation to find the amount of salt dissolved in 19 ml of ...
January 24, 2011

chemistry
A 0.50 {\rm g} sample of vegetable oil is placed in a calorimeter. When the sample is burned, 18.9 {\rm kJ} are given off.
January 23, 2011

physics
In 1954, Roger Bannister became the first human to run a mile in less than 4 minutes. Suppose that a runner on a straight track covers a distance of 1.00 mi in exactly 4.00 min. 1. What is his average speed in mi/h? 2. What is his average speed in ft/s? 3. What is his average ...
January 20, 2011

Chemistry
0.50 mol
January 4, 2011

geometry
no because 2+6 has to be greater than 11
January 2, 2011

i think it us 45%
December 13, 2010

Physics
A thing rod of length L and negligible mass, that can pivot about one end to rotate in a vertical circle. A heavy ball of mass 5.00kg is attached to the other end. The rod is pulled aside through an angle 30.0 degrees and released. What is the speed of the ball at the lowest ...
December 9, 2010

Physics
A 24 inch string is wrapped around the 1/8 inch radius axis of a yo yo. Starting from rest the yo yo descends with a constant angular acceleration of 4 rad/second squared. How long will it take the string to completely unwind?
December 9, 2010

math
5.625 pounds.
December 8, 2010

social studies
December 8, 2010

social studies
In what ways did Europeans' desire for trade with Asia affect the western hemisphere?
December 8, 2010

social studies
No, Hitler committed suicide in his bunker with Ava Braun * Spelling*
December 7, 2010

Physics
So I choose the bottom right corner as the pivot point. The radial arm up to point P is the length L of the side of the sign, and the horizontal force is perpendicular to this radial arm. The weight acts straight down, so the radial arm perpendicular to the weight is half the ...
December 6, 2010

Chemistry
why would acetic acid concentration of a good vinegar need to be known for commercial reasons and regulatory health and safety reasons
December 3, 2010

Chemistry
suppose a pippetting error was made when preparing the diluted vinegar, but the diluted vinigar solution was uniform and the naoh titration values were consistant. when will the student learn that the experiment result was not accurate explain
December 3, 2010

Chemistry
A student did not fully mix the solution of Oxalic Acid in the volumetric flask predict and explain the effect of the range of the students titration volumes when using the NaOH solution to titrate the Oxalic Acid solution
December 2, 2010

Chemistry
what are 1 or 2 causes of loss of product that you may observe when synthesising a coordination compound sorry more detail we were synthesising Copper sulfate pentahydrate CuSO4.5H2O And Potassium oxylate dihydrate K2C2O4.H2O
November 29, 2010

Chemistry
how could you improve the product yeild if you had to redo the synthesis
November 29, 2010

Chemistry
what are 1 or 2 causes of loss of product that you may observe when synthesising a coordination compound
November 29, 2010

Chemistry
if it takes 20 h to convert 100g of reactant A to roduct C at 20 degrees celcius, approximately how many minutes would it take at 110 degrees celcius? I know the answer, I just don't know how to get the answer
November 28, 2010

Spanish
Thank you-that's where I was confused
November 28, 2010

Spanish
If this is what they are saying in Spanish- "Yo me llamo Joey.“ Vivo en Chicago pero soy de Springfield. “ How would I answer these two questions? ¿De dónde es Joey? ¿Dónde vive? Thank you
November 28, 2010

Chemistry
The following reaction is used to produce tungsten(VI)oxide: WS3(s) + O2(g) ¨ WO3(s) + SO2(g) The WO3 is then heated and undergoes a decomposition reaction produce tungsten and oxygen gas. How many grams of tungsten could be produced if 39.27 grams of WS3 are used
November 25, 2010

Chemistry
Given the following reaction: HCl(g) + SrO(s) ¨ SrCl2(s) + H2O Calculate the mass of HCl in grams that would react with 11.44 kg SrO.
November 25, 2010

social studies
what do the egyptians stuff in the eye sockets of mummies?
November 22, 2010

Chemistry
What are the sizes of BCl3, CCl4, NCl3, and Cl2O in comparison to one another. For example BCl3<CCl4<NCl3.... I know that isn't right but I need to know this to find difference in bond lengths and some of these molecules are close together in size so I'm not sure...
November 18, 2010

physics
A 40%-efficient car engine accelerates the 1300 kg car from rest to 20 m/s How much energy is transferred to the engine by burning gasoline? .
November 13, 2010

physics
A 30 kg child slides down a playground slide at a constant speed. The slide has a height of 3.8m and is 7.8m long. using energy considerations, find the magnitude of the kinetic friction force acting on the child.
November 5, 2010

Psychology
Why do you believe that researchers would want to see if there isa correlation rather than just fully testing ech variable?
November 4, 2010

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