trey
Popular questions and responses by trey
Physics
Radio amateurs are permitted to communicate on the "10 meter band." What frequency of radio waves corresponds to a wavelengthy of 20m? (The speed of radio wave is 3.00 x 10(8)m/s). Can you help me with setting up the formula? frequency = (wave
asked on April 10, 2007 
math
Two runners are competing in a race. One runner averages a pace of 7 minutes per mile and finishes the race in 28 minutes. The second runner finishes the race in 30 minutes. Which of the following is the pace of the second runner
asked on May 28, 2013 
math
A gumball machine contains red, orange, yellow, green, and blue gumballs. Twenty percent of the gum balls are red, 30% are orange, 5% are yellow, 10% are green, and the rest are blue. If there are a total of 120 gumballs, how many more blue gumballs are
asked on May 28, 2013 
trig
whats 21° 44' 3" as a decimal to the nearest thousandth of a degree
asked on November 7, 2011 
Statistics
If the standard deviation of the distribution of the difference between means is .76, what is the t score?  (15  23) / 0.76 = 10.53  (0.76)(1523) = 8.00  [(6.5 + 4.5)/2][0.76] = 4.18  (55  51) / 0.76 = 5.26
asked on October 11, 2009 
biology
how are glucose and ATP the same and how are they different...help would be awesome
asked on January 24, 2008 
3rd grade math
I CANNOT BELIEVE THIS IS A THIRD GRADE WORKSHEET! THIS IS SOO INAPPROPRIATE. THEY HAVE NEVER DONE LONG DIVISION OR REMAINDERS & THERE IS ONE WEEK OF SCHOOL LEFT & THIS IS WHAT THE TEACHER HANDS OUT.....86 DIVIDED BY 9, 17 DIVIDED BY 3, 73 DIVIDED BY 8 !
asked on May 29, 2012 
Statistics
In an analysis of variance, if the null hypothesis is true then:  The research hypothesis is also true You will need fewer participants for the experiment  There is less variance among the sample means than if the null hypothesis was not true  The
asked on October 11, 2009 
math
using digits 19 only once, multiply a 3 digit by a 2 digit number and get a 4 digit result 12*345=4140? looks ok to me. the answer would have to be 6789 or some order of those digits if you used the others in the question. digits 19 used only once, no
asked on November 28, 2006 
algerbra
A plane flies from new york to chicago (a distance of 1,600 miles) at 400 mph. Returning from Chicago to New York it flies into a headwind and averages only 320 mph. How many hours total was the plane in the air for the entire trip?
asked on May 8, 2016 
language
Which of the following sentences is punctuated correctly? A. A carpenter must use certain tools, hammers, saws, chisels, to finish a job. B. A carpenter must use certain tools hammers, saws, chisels to finish a job. C. A carpenter must use certain tools 
asked on May 28, 2013 
Statistics
Consider a study in which the population variance estimate based on treatment group of 14 participants is 8, and the population variance estimate based on a control group of 17 individuals is 9. Compute the pooled estimate of population variance.  7.25 
asked on October 11, 2009 
Statistics
A sociologist interested in cultural differences compared women of two ethinic groups on a Role Approval Index (high scores mean high degrees of approval of one's social role). The results are as follows: Ethnic Group A: N = 15 M= 55 S2 = 6.5 Ethnic Group
asked on October 11, 2009 
Statistics
Suppose a researcher wants to study the effectiveness of a new reading program for students who have not acquired the necessary reading skills by the time they reach the 8th grade. A randomly selected group of 50 students from a local junior high with poor
asked on October 11, 2009 
Statistics
S2Within" equals:  the sum of squares within each group  the square root of the standard withingroup deviations from the mean  the squared variance within groups  the population variance estimate based on the variation within each of the groups.
asked on October 11, 2009 
algebra
what is the next number in the following series? 16 21 26 26 12 5 ? hint" just because numbers are used doesn't always mean the relationship between them is mathematical. these numbers spell a word
asked on September 10, 2009 
Science
What is the best way to separate toothpicks and marbles?
asked on October 12, 2018 
Math
Eric bought a package of loose leaf paper that contained 500 sheets. In the first week, he used 1/5 of the paper. During the next two weeks, Eric used 2/5 of the remaining paper. How many sheets of paper did Eric have available at the start of the fourth
asked on January 28, 2017 
math
Compare. Write , or = 5.37 < 5.370 is the answer
asked on September 9, 2015 
Calculus
An airplane has airspeed of 724 k/h at bearing of North 30 degrees East. If the wind velocity is 32 from west. find the ground speed and direction of plane. Teacher gives solution of 740.5 k/hr and 57.9 degrees. Can anyone show steps?
asked on June 1, 2015 
English
Using the words biometer chronometer hydrometer micrometer perimeter phonometer thermometer put them in the correct order in sentences below. PLEASE CORRECT ME IF I'M WRONG!! 1.The THERMOMETER registered an increase in temperature. 2.He used a BIOMETER to
asked on November 18, 2013 
math
Marsha is using an 8ft ladder to pick apples from a tree. If the bottom of the ladder is 3ft from the bottom of the tree , calculate the angle of elevation to the nearest degree.Make sure to include diagram.
asked on July 6, 2012 
ut
The density of an unknown metal is 8.94 g/cm^3 and its atomic radius is 0.126 nm. It has a facecentered cubic lattice.
asked on January 26, 2011 
10th grade
a rhombus has a perimeter of 44 centimeter and a diagnol 12 centimeters long. wat the area?
asked on May 24, 2010 
geometry
The measure of an angle's supplement is 44 less than the measure of the angle. Find the measure of the angle and its supplement.
asked on August 27, 2009 
riddle  please help
My child was given this riddle as a homework assignment. We are stumped. Q: "The skydiver had fries and a milkshake,why was he nervous?" A: "Because he was _ _(2lett.word) _ _(2lett.word) _ _ _(3lett.word) _ _ _(3lett.word). " Unscramble the letters below
asked on January 21, 2007 
american history
The new democratic age of the 1820s, ’30s, and ’40s not only witnessed the advent of universal white male suffrage but also a strong impulse for social reform, which was often supported by those denied access to the ballot. What drove the impulse
asked on December 11, 2017 
math
a researcher tagged 100 frogs in a pond. One week later she took a sample and only 5 out of 20 were tagged. Using this method how many frogs would she estimate are in the pond
asked on May 8, 2016 
Social Studies
Can you check my answers? My answers are marked with this: (*) 1. What was the effect of World War I on South Carolina? A. The state economy shrunk significantly. *** B. Citizens used more resources, such as meat and fuel, than before the war. C. Factory
asked on April 2, 2015 
language
Which of the following sentences is punctuated correctly? A. After you sign the agreement it is too late of course, to change your mind. B. After you sign the agreement, it is too late of course to change your mind. C. After you sign the agreement, it is
asked on May 28, 2013 
language
The gist of the saying went something like this: If a person wants to get ahead in life, you have to be willing to work for it. Which of the following language conventions is violated in the sentence above? A. Use of a colon B. Verb tense C.
asked on May 28, 2013 
language
Which of the following sentences is written correctly? A When properly designed, an automobile can achieve great fuel efficiency. B. When properly designed an automobile can achieve great fuel efficiency. C. When properly designed, great fuel efficiency
asked on May 28, 2013 
language
Jimmy you must leave the room shut the door and be quiet. Which of the following options correctly punctuates the sentence above? A Jimmy, you must leave the room, shut the door, and be quiet. B. Jimmy; you must leave the room, shut the door and be quiet.
asked on May 28, 2013 
language (sentence fluency)
Which of the following options best demonstrates sentence fluency? A The two boys went to the store to buy some milk with their mother and her boyfriend, who had a broken foot after supper. B. The two boys went to the store to buy some milk after supper
asked on May 28, 2013 
math
Three pools are being drained for the winter. It takes Pool B twice as long to drain compared to Pool A, and it takes Pool B three times as long to drain compared to Pool C. If Pool C drains in 6 hours, which of the following is the number of hours it
asked on May 28, 2013 
Algebra
Please help with this: Write a polynomial in standard from with the zeros 2, 2 and 2. I remember that (xa)(xb)(xc)=0 but I forget what exactly to do.
asked on March 5, 2013 
Math
If b varies directly as the square root of w and b equals a negative 24 when w equals 36, what is w when b is equal to 1/8?
asked on September 16, 2012 
Chemistry. Please help
How many milliliters of glacial acetic acid (17.3 M) would you need to titrate an aqueous solution of 100 grams sodium acetate (MW = 82.0 g mol1) to get a final pH of 5.00 and a final volume of 1.00 liter? The pK’ for acetic acid is 4.76. Show your
asked on September 10, 2012 
Chemistry really desperate
How many milliliters of glacial acetic acid (17.3 M) would you need to titrate an aqueous solution of 100 grams sodium acetate (MW = 82.0 g mol1) to get a final pH of 5.00 and a final volume of 1.00 liter? The pK’ for acetic acid is 4.76. Show your
asked on September 10, 2012 
Desperate chemistry
How many milliliters of glacial acetic acid (17.3 M) would you need to titrate an aqueous solution of 100 grams sodium acetate (MW = 82.0 g mol1) to get a final pH of 5.00 and a final volume of 1.00 liter? The pK’ for acetic acid is 4.76. Show your
asked on September 10, 2012 
Chemistry
How many milliliters of glacial acetic acid (17.3 M) would you need to titrate an aqueous solution of 100 grams sodium acetate (MW = 82.0 g mol1) to get a final pH of 5.00 and a final volume of 1.00 liter? The pK’ for acetic acid is 4.76. Show your
asked on September 10, 2012 
Math Word problems (3rd Grade)
Shondra has 72 roses and 48 lilies. She wants to make 8 bouquets with them, with the same number of each type of flower in each bouquet. How many flowers will be in each bouquet?
asked on April 30, 2012 
math
If you are calculating surface area of a right circular cone topped with a hemisphere. the radius is 4 cm and the rt angle is 8 cm...what is the lateral surface area. Is it 8.94 or is it 9? Explain answer please. Thanks
asked on March 16, 2012 
math
what distance formula would you use to solve this problem? A boat starts at point A, moves 3 km due north, then 2km due east, then 1 km due south, and 4km due east to point B. Find the distance AB.
asked on March 16, 2012 
pythagorean theotem
what is A=7 ft b=21 ft
asked on December 18, 2011 
physics
Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The object m1 is held at rest on the floor, and m2 rests on a fixed incline of θ = 41.0°. The objects are
asked on September 27, 2011 
physics
Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The object m1 is held at rest on the floor, and m2 rests on a fixed incline of θ = 41.0°. The objects are
asked on September 27, 2011 
algebra
i have tried for a long time and just cant come up with the rule for this function table. x= 1 2 3 4 5 and 6 y=180 165 150 135 120 and 105 if any one can help me thanks.
asked on September 1, 2011 
geometry
have an area of 11 square centimeters. I am made up of whole square centimeters. My length is 4 cm. I am not a rectangle. What am l?
asked on May 19, 2011 
math
6n+5 if n =4.5 what is n
asked on April 26, 2011 
Statistics
Data Information: Wage Income Statistics: Men VS Women Wage gap, by description, is the difference in salary among two groups of people. The description is associated with the practice of paying one gender more than the other. For many years there has been
asked on April 23, 2011 
chemistry
how much energy would it take to completely melt 200kg of lead if the lead is currently at 25 degrees celcius
asked on December 8, 2010 
social studies
i cant unscramble sartina
asked on September 27, 2010 
science
animals need what to get rid of body waste?
asked on September 20, 2010 
9th grade
y=62x 7xy=3
asked on May 25, 2010 
Biology
Suppose you have monohybrid pea plants in your garden and find that they produce round seeds to wrinkled seeds in the ratio of 3:1. If the alleles are designated R and r, respectively, what are the probable genotypes of the wrinkled seeds produced by your
asked on April 22, 2010 
geometry
Determine wether triangle deef is cogruent to triangle pqr given the coordinates of the verticles. D(6,1),E(1,4),P(0,5),Q(7,6),R(5,0)
asked on February 23, 2010 
math
Explain how you could show five less than a number using an expression.
asked on November 9, 2009 
U.S. History
Define the following: 1) Valley Forge 2) Battle of Trenton 3) Battle of Saratoga 4) Battle of Yorktown 5) Treaty of Paris of 1783 6) Egalitarianism
asked on October 21, 2009 
birchwood elementary
what is te magnitude estiamte of 6 divide by 78.6 and wht place value is it in
asked on October 13, 2009 
physics
Rubidium forms the postive Rb+ Is this ion larger or smaller then the neutral atom? Explain PLEASE
asked on October 11, 2009 
Statistics
The ____________ is a hypothesistesting procedure in which there are two separate groups at people tested and the population variance is not known.  t test for dependent means  t test for a single sample  t test for independent means  t test for
asked on October 11, 2009 
Statistics
Suppose a researcher wants to study the effectiveness of a new reading program for students who have not acquired the necessary reading skills by the time they reach the 8th grade. A randomly selected group of 50 students from a local junior high with poor
asked on October 11, 2009 
Statistics
Cohen's conventions for the t test for independent means are approximately _____ for a small effect size, ____ for a medium effect size, and ______ for a large effect size?  .1, .3, .5  2, 4, 6  .2, .5, .8  3, 6, 9
asked on October 11, 2009 
Statistics
A mathematically defined curve that is the comparison distribution used in ANOVA is called the:  Normal distribution  Chi Square distribution  F distribution  T distribution
asked on October 11, 2009 
Math
The side of a square is (Radical 18). What is the area of the square? A) 18 B) 36 C) 9 D) 4 (radical 18)
asked on September 7, 2009 
Pre cal
how would you find the exact value of this expression?? 2sin15°cos°
asked on April 18, 2009 
Math
New Car. A game show gives away 2 new cars. One car is worth $50,000 and the other car is worth $40,000. Two members of the audience are randomly selected to participate and receive one of the two new cars. What is the expeted value if you are randomly
asked on March 18, 2009 
Math
Raffle. There is a prize drawing for a new computer and a new stereo system. Suppose there are 1500 raffle tickets sold. The computer is worth $1000 and the stereo is worth $500. If the ticket cost $5, what is the expected value if you purchase one ticket?
asked on March 18, 2009 
Calc
A particle is moving along the curve y= 3 \sqrt{3 x + 4}. As the particle passes through the point (4, 12), its xcoordinate increases at a rate of 4 units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked on March 15, 2009 
math
express 2/5 as a percent
asked on December 13, 2008 
Math
x^2+9x/x^281
asked on October 22, 2008 
5th grade
what does an oblique line look like
asked on October 8, 2008 
College
is this a good field of study? communication degree. what kind of job can I obtain with this degree
asked on March 24, 2008 
Physics
If you are viewing a hologram and you close one eye, will you still perceive depth? Explain.
asked on March 23, 2008 
Physics
How can you determine the polarization axis for a single sheet of Poloroid?
asked on March 23, 2008 
Physics
The digital desplay of watches and other devices are normally polarized. What related problem can occur when wearing polarized sunglasses?
asked on March 23, 2008 
Physics
Why are interference colors more apparant for thin films than for thick films?
asked on March 23, 2008 
criminal justice
If you were an investigator writing a report on a suspect whom you believe to be guilty but for whom the evidence is too weak to go to trial, would you exaggerate or add to the facts in your report? Why or why not?
asked on February 26, 2008 
world history
what is the significance of the fall of the roman empire?
asked on January 23, 2008 
WORLDHISTORY
HOW DID THE MINOANS AND MYCENAEANS SHAPE EARLY GREEK CIVILIZATION
asked on September 12, 2007 
math
what is 65% of 350? Multiply 0.65 by 350. That will be the answer.
asked on June 22, 2007 
Physics
2 Questions. 1. If you wished to produce a sound with a wavelenght in air equal to the length of the room, 10m, what would be its frequency? 2.You note a 4.0 second delay for an echo in a canyon. What is the distance to the wall of the canyon? 1. Use the
asked on April 11, 2007

Science
gayyy
posted on February 11, 2020 
Science
i don't know I just love biology and I am a student that is a boy that is a cool dude
posted on December 5, 2019 
algebra 1 page 167 did you hear about...
The answer is The farmer who named his pet rooster Robinson because it crew up
posted on November 13, 2019 
chemistry
Given the following chemical reaction: N2 + 3H2 → 2NH3 How many grams of NH3 would be produced if you started out with 56 grams of nitrogen gas and 10 grams of hydrogen gas?
posted on November 6, 2019 
math
The answer is 54. If each pie is cut in fourths and each piece cost $1.50 then the whole pie cost $6. And if they are nine pies then you multiply 9x6 which will be equal to 54.
posted on November 14, 2018 
Science
Use a Filtration to separate the two.
posted on October 12, 2018 
chem
870
posted on September 9, 2018 
4th Grade Math
Since the ratio is 4:5 for cats Take (4/9) x 153 = 68
posted on April 5, 2018 
Math
Since the ratio is 3 dogs to 2 cats, its a total of 5 animals Therefore to find the number of dogs if a total of 30 animals are present you take (3/5) x 30
posted on April 5, 2018 
Math
100
posted on April 4, 2018 
History Check Please!
Those answers are all right. Thank u
posted on July 21, 2017 
Understanding Perimeter
Dad
posted on April 3, 2017 
Math
Thanks, Ms.Sue
posted on January 28, 2017 
Math
200 sheets?
posted on January 28, 2017 
Math
Because i guessed
posted on January 28, 2017 
Math
Okay, my answer was 240
posted on January 28, 2017 
College Math
is the difference of Chrissy's height and 14 .
posted on December 6, 2016