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December 21, 2014

Posts by Maria


Total # Posts: 1,558

Geometry
The distance between two docks on opposite sides of a river is 90 meters. The angle formed by the river bank and the line between the docks is 53°. What is the width of the river? Round your answer to the nearest meter and show your work.
October 25, 2011

Geometry
The distance across a lake is 34 meters. What is the distance, h, between the boat ramp and the dock? Round your answer to the nearest meter and show your work.
October 25, 2011

physics
(d) Wave pwer is proportional to frequency and Amplitude^2. f=6.669 Hz u=10.1 g/m A=0.169 m W=41.9 I tried with the power transmitted formula power=0.5*u*W^2*A^2*v But my solution is wrong :( I can not find a) and d) :(
October 25, 2011

physics
a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? yes x is 2.27 cm. in meter is 0.0227m !
October 25, 2011

physics
A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? b)... the ...
October 25, 2011

math
if you start from the bottom, you get 16, then 27 then 38 27 is greater than 25 and less than 35
October 24, 2011

algebra
does 6^2 + 20^2 = 21^2 ?
October 24, 2011

Alegra Beginning
ok, (2 x Tom) + Tom = 48,000 + 6,000 3 Tom = 54,000 Tom = 54,000 / 3 Can you figure out the rest?
October 24, 2011

Alegra Beginning
Rachel = (2 x Tom) - 6,000 Rachel + Tom = 48,000 so, (2 x Tom) - 6,000 + Tom = 48,000 can you solve it from here?
October 24, 2011

algebra
4 shorts will cost $ 14 x 4 , how much is left from $ 92 after that? Then divide that by $ 12 to see how many shirts Susie can buy .
October 24, 2011

algebra,math
a^2 + b^2 = c^2
October 24, 2011

MATH
wouldn't she be 5 years older 5 years from now?
October 24, 2011

MATH
Mom = 5 x (Marta) Mom = 25 so 25 = 5 x (Marta)
October 24, 2011

physics
A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? b)... the ...
October 24, 2011

physics please helpp
A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? b)... the ...
October 24, 2011

physics
A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? b)... the ...
October 24, 2011

physics
A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? b)... the ...
October 24, 2011

physics
217.7 km i found it. thankss
October 24, 2011

physics
An earthquake generates three kinds of waves: surface waves (L waves), which are the slowest and weakest; shear (S) waves, which are transverse waves and carry most of the energy; and pressure (P) waves, which are longitudinal waves and travel the fastest. The speed of P waves...
October 24, 2011

4th grade Social Studies
What are the steps of the water cycle
October 24, 2011

4 grade math
complete the following problem 4+8+7/3*72
October 24, 2011

physics
A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t = 0.175 s. ? b)... the ...
October 24, 2011

physics
i found it ! thankssss
October 24, 2011

physics
bobpursley 369 km is true!! thnx very much ! But if starts barking is 23.3 s ?? what is answer ?? can you calculate please !
October 24, 2011

physics
An earthquake generates three kinds of waves: surface waves (L waves), which are the slowest and weakest; shear (S) waves, which are transverse waves and carry most of the energy; and pressure (P) waves, which are longitudinal waves and travel the fastest. The speed of P waves...
October 24, 2011

physics
An earthquake generates three kinds of waves: surface waves (L waves), which are the slowest and weakest; shear (S) waves, which are transverse waves and carry most of the energy; and pressure (P) waves, which are longitudinal waves and travel the fastest. The speed of P waves...
October 24, 2011

physics
An earthquake generates three kinds of waves: surface waves (L waves), which are the slowest and weakest; shear (S) waves, which are transverse waves and carry most of the energy; and pressure (P) waves, which are longitudinal waves and travel the fastest. The speed of P waves...
October 24, 2011

physics
An earthquake generates three kinds of waves: surface waves (L waves), which are the slowest and weakest; shear (S) waves, which are transverse waves and carry most of the energy; and pressure (P) waves, which are longitudinal waves and travel the fastest. The speed of P waves...
October 24, 2011

physics
the small piston of a hydraulic press has an area of 7.0 cm squared. if the applied force is 30.0 N, find the area of the large piston to exert a pressing force of 4000 N
October 23, 2011

chemistry
i do not know how to put those in words, can some one help me, please. CoCL2(s) + 2HF(g)= CoF2(s)+ 2HCL(g) and P6( NO3)2(aq) + 2KL(aq) = PbL2(s) +2KNO3(aq)
October 21, 2011

chemistry
i do not know how to put those in words, can some one help me, please. CoCL2(s) + 2HF(g)= CoF2(s)+ 2HCL(g) and P6( NO3)2(aq) + 2KL(aq) = PbL2(s) +2KNO3(aq)
October 21, 2011

math
•Divide the top of the fraction by the bottom, •Then multiply the result by 100 and read off the answer !
October 20, 2011

Math
Let x be the width of the 1st spider web. (x/2) is the width of the 2nd spider web. (x + 3) is the legnth of the 3rd spider web. all widths add up to 18 inches.
October 20, 2011

Help With math
(3x-2)^2=2 3x-2 = sqrt2 3x= sqrt2 + 2 x = (sqrt2 + 2) / 3
October 20, 2011

5th grade math
How do you divide 836 by 22, using compatible numbers? Is there a quick way to figure out the compatibility?
October 19, 2011

5th grade math
How do you divide 836 by 22, using compatible numbers? Is there a quick way to figure out the compatibility?
October 19, 2011

Math
you're welcome. bye.
October 19, 2011

Math
yes. It helps if you show the common factor of 4: 12% = 12/100 = (3 x 4)/(25 x 4) = 3/25
October 19, 2011

Math
Express 12% as a fraction, with 100 as the denominator......Yes (12/100)
October 19, 2011

Math
you're welcome
October 19, 2011

Math
yes. If you get 19/20 in a math test then you got 95 percent.
October 19, 2011

Math
•Divide the top of the fraction by the bottom, •Then multiply the result by 100 and read off the answer !
October 19, 2011

Math
"To round numbers to the nearest thousand, make the numbers whose last three digits are 001 through 499 into the next lower number that ends in 000. For example, 6424 rounded to the nearest thousand is 6000. Numbers that have the last three digits of 500 or more should be...
October 19, 2011

Math (please help)
Whatever you do to the left side of the equation, you have to do to the right side of the equation.
October 19, 2011

Math (please help)
give me another question then.
October 19, 2011

Math (please help)
n/3 - 8 = -2 (n/3) - 8 = -2 (n/3) - 8 + 8 = -2 +8 (n/3) = 6 (n/3) x 3 = 6 x 3 n = 18
October 19, 2011

Science/ help with finding the independant variabl
Forty students participated in groups of 4-6. They were given a questionnaire to test their knowledge of the Black cultural stereotype. Subjects were asked to list the components of the stereotype. After listing the components of the stereotype, subjects completed the Modern ...
October 19, 2011

Math
124 - 6 x (0 + 15) = 34
October 19, 2011

Math
Hair grows about one 1/2 inch each month. After you shave your head how many years will it be until your hair is 1 foot in length?
October 18, 2011

Math: Calculus
I'm sorry, I still dont understand
October 17, 2011

Math: Calculus
Assume that a population size at time t is N(t) and that N(t)=40 x 2^t , t>0. Show that N(t)=40e^t ln2 Can someone please guide me step by step on this question? Im really confused. thanks. I tried to work it out, and this is what I got. N(t)= 40 x 2^t = 40 x ln 2^t = 40 x ...
October 17, 2011

algebra
37/16
October 16, 2011

math
Suppose the clerk had to stack 200 boxes of cereal in a triagle. How many boxes would be on the bottom row?
October 12, 2011

algebra 2 word problems
Yup, they're correct, but for number one they ask you to use the variable c to represent the number of cases. So I would rewrite it as 11c
October 10, 2011

Scientific Notation
I'm having some trouble solving this problem: 32x10^2 / (4x10^2)^3 Is it possible to have a negative value in scientific notation?
October 10, 2011

english
Consider the sentence "The peace accord proposed that a neutral army be deployed to act as a buffer between two sides of a dispute." Is "buffer" a correct example of "personification"? Or perhaps another rhetorical device? Thank you.
October 10, 2011

Math
How many of the 28 students in Andy's class are boys, if 4/7 are girls?
October 9, 2011

Math
Joe keeps all his socks in one drawer. He has 7 blue socks and 9 brown socks. If he reaches in the drawer without looking, what is the least number of socks he can take out to be sure of getting a pair of the same color?
October 9, 2011

Chemistry
Calculate [H3O+] and [OH-] in 0.22 M KOH(aq). This is a strong base.
October 5, 2011

physics
some university students loaded their things into a toboggan. the toboggan has a mass of 8 kg and they are pulling it with a force that is 40 degrees above horizontal. if the coefficient of friction between the toboggan and a dry patch of sidewalk is 0.7,what force is required...
October 2, 2011

Pre-calculus
The terminal side of theta lies on a given line in the specified quadrant. Find the values of the six trigonometric functions of theta by finding a point on the line. y= -3/2x in quadrant 4
September 29, 2011

Pre-calculus
The terminal side of theta lies on a given line in the specified quadrant. Find the values of the six trigonometric functions of theta by finding a point on the line. y= -3/2x in quadrant 4
September 29, 2011

Pre-calculus
The terminal side of theta lies on a given line in the specified quadrant. Find the values of the six trigonometric functions of theta by finding a point on the line. y= -3/2x in quadrant 4
September 29, 2011

Science
Describe the correlation that exists between the density of a liquid and the float height of a dowel in that liquid.
September 27, 2011

math
A high school has created a table that shows the top athletes that play both football and baseball. Find and describe the intersection of these two sets.
September 27, 2011

Math
Susan has three times as many art brushes as Monique. If they have 60 art brushes altogether, how many brushes does Susan have?
September 27, 2011

Physics
The lowest A on a piano has a frequency of 27.5 Hz. Assume: The tension in the A piano wire (of length 1.8 m) is 305 N, and one-half wave- length occupies the wire. What is the mass of m the wire? Answer in units of kg.
September 26, 2011

math
Use compatible numbers to estimate. 212 + 347 = 83 + 34 =
September 22, 2011

Math
Use compatible numbers to estimate. 329 + 64 =
September 22, 2011

literary
What's the literary device being used in that sentence?
September 21, 2011

literary
Former Indonisean President Suharto was sometimes referred to as a puppet master
September 21, 2011

math
God Bless you all for your help
September 20, 2011

math
round 8,438 and 5,555 to the nearest hundred
September 20, 2011

math
round 929 to the nearest hundred
September 20, 2011

math
what is 7,468 rounded to the nearest hundred
September 20, 2011

Spanish-9th grade
la ardilla cafe con blanco es muy pequeña y gorda ( for animals you do not use baja or bajita only for people)Im a Spanish and English speaker, if you need more help I can help you.
September 20, 2011

world history
how can constitutions promote change or help resolve social issues?give some historical examples
September 18, 2011

statistic
This data shows the final exam scores of 10 randomly selected students and the number of hours they studied for an exam. (hours, scores) (3, 65), (5, 80), (2, 60), (8, 88), (2, 66), (4, 78), (4, 85), (5, 90), (6, 80), (3, 71) Find the equation of the regression line for the ...
September 17, 2011

history
Who ruled over Babylon's last era of greatness
September 16, 2011

geometry
How do I find the length of the hypotenuse of a right triangle with only one leg length and all angle measurements
September 15, 2011

Physics
Does an object still possess any kinetic or potential energy at absolute zero?
September 12, 2011

English Grade 11
In George Orwell’s “Politics and the English Language” which author is Orwell referring to as “seventeenth-century Shelley”. My best guess is Mary Wollstonecraft Shelley (1797-1851) author of Frankenstein. Does that seem reasonable? Thank you.
September 8, 2011

English Grade 11
Thank you. Would Orwell's reference to the 17th century Shelley perhaps be the author of Frankenstein?
September 8, 2011

English Grade 11
In George Orwell’s “Politics and the English Language” what is the “B.B.C. Timidity”? Thank you.
September 8, 2011

math
Betsy is making a flag. She can choose three colors from red, white, blue and yellow. How many choices does Betsy have?
September 7, 2011

calculus
given: f(x)=x^4-3x^3+2x^2-7x-11 find all roots to the nearest 0.001
September 4, 2011

chemistry
yes
August 24, 2011

Revolutionary War Letter
It is 1776. Write a three to five paragraph letter to your sister in England explaining your decision to participate in the rebellion against Britain. Be sure to list three reasons for your support of the rebellion against Britain and include any reasons you could sympathize ...
August 15, 2011

american history Lexington and Concord Essay
Who was telling the truth? Which source was more believable? Is only one version true or could parts of each source be close to the truth? It is time for you to decide. You will write a persuasive essay explaining what you think really happened on April 19, 1775. [Lexington ...
August 15, 2011

english3
"The Wild, Wild West" assignment: Write a Cowboy song or poem.
August 15, 2011

Marine Science
1.Which condition is believed to be caused by El Niño and effectively weakens hurricanes in the Atlantic ocean? *warm water temperatures *high wind shear *low wind shear *high pressure 2.We only see hurricanes in the summer months because *there is more rain in the ...
August 15, 2011

Making Data Graphs
In Example 2, find the percent of the total and the number of degrees in each sector for mountains, theme parks, relatives, and other. Find the median of the data set in Example 3. In which category does it fall? Find the average unemployment rate for Example 4. Determine ...
August 15, 2011

Life Since the 1950s
for what numbers should I put that in??
August 15, 2011

Life Since the 1950s
I need to create 10 headlines from that. and this is what I got so far 1. 2. The Korean War- Communist against Democrat 3. The Most Controversial Conflicts : Vietnam 4. Fidel Castro stands tall, a new revolution 5. One inspires all, Africa gets it's Independence! 6. Terror...
August 15, 2011

Life Since the 1950s
Spread of Independence Between 1945 and 1962, many nations in Asia and Africa achieved freedom from Western influence. After WWII, many Jews returned to Israel, their Jewish homeland. Palestinian Arabs resisted this “invasion.” In 1947, the United Nations voted for ...
August 15, 2011

flvs
well I dont understand how I'm suppose to do this assignment,and this is about World War I, why the war began, who fought in the war, and the way the war was fought. And what I have to do is take the role of a World War I soldier and communicate all of what you are ...
August 15, 2011

flvs
would you be willing to help me??
August 15, 2011

flvs
By now, you should be familiar with the causes and alliances of World War I and understand why the war began, who fought in the war, and the way the war was fought. Assignment: Are you the type of person who likes to write? Do you feel like writing helps you communicate your ...
August 15, 2011

math
juan entered a bike race which he was to ride 45 miles. stopping at certain intervals during the race to check in with the scorers .he checked in 9 times before crossing the finish line if the intervals wre eaqually spaced throughoutthe race,how far apart were they?
August 12, 2011

Calculus
A sphere with radius 1m has temperature 15 degrees C. It lies inside a con- centric sphere with radius 2m and temperature 25 degrees C: The temperature T(r) at a distance r from the common centre of the spheres satisfi es the di fferential equation: d^(2)T/dr^2 + 2/r(dT/dr...
August 8, 2011

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