
algebra
a tugboat goes 160 miles upstream in 20 hours. The return trip downstream takes 10 hours. Find the speed of the tugboat without a current and the speed of the current.
asked by Math Girl on June 10, 2012 
english
Hi I have to write a paper on 2 opposing sides of tattoos. but everytime I show my teacher 2 sides I think of she keeps saying the paper is still one sided. Can someone please help me find 2 truly opposing arguements when it comes to tattoos thanks sooooo
asked by jenny on December 12, 2008 
math
A rectangular solid has a base with length 6 cm and width 5 cm. If the volume of the solid is 300 cm3, find the height of the solid. [Hint: The volume of a rectangular solid is given by V = LWH.]
asked by Brenda on January 29, 2008 
physics
Two objects (39.0 and 21.0 kg) are connected by a massless string that passes over a massless, frictionless pulley. The pulley hangs from the ceiling. Find (a) the acceleration of the objects and (b) the tension in the string.
asked by Sally on October 3, 2012 
Math
1) A dilation maps triangle HIJ onto triangle H'I'J. If HI= 7 cm, IJ= 7 cm, I’J’= 5.25 cm, and H’J= 9 cm, the find HJ. a. 4.08 cm^^^ b. 6.75 cm c. 9 cm d. 12 cm 2) if A' is the image of a(3, 4) after a dilation with scale factor 7 centered at the
asked by Valhalla on September 24, 2018 
history
For the quote "Remember the Maine" I went on a lot of websites and most of the websites said that "remember the Maine" was said by Americans. I can't seem to find what the meaning of the quote was. Did people say it when they wanted to go to war with
asked by Amy~ on August 28, 2010 
Math
A walkway is formed by four semi circles. The diameter of the inner semi circles is 14 feet. The width between the outer and inner semicircles is 2 feet. Find the area of the walkway. Use 3.14 as an approximation for pi.
asked by Eiyannah on June 9, 2015 
Math/geometry
Two angles are complementary.the second angle has 6 more than three times the measure of degrees as the first one. Find the measure of each angle using an equation. Define your variables. I didn't get what the two variables should be... And how I'd write
asked by Sonja R on April 12, 2016 
physics
Two objects (52.0 and 20.0 kg) are connected by a massless string that passes over a massless, frictionless pulley. The pulley hangs from the ceiling. Find (a) the acceleration of the objects and (b) the tension in the string.
asked by brando on July 1, 2013 
math
justify that15 is the sum of eachrow of a 3X3 magic square using the number 09. Find the sume of all the numbers. What is the of eachrow in a 4X4 magic square that uses the numbers 116.
asked by Mark on April 22, 2010 
Algebra
An object is dropped from a bridge. Find the distance the object has fallen when its speed reaches 132 ft/s. Use the equation v = 64d , where v is the speed in feet per second and d is the distance in feet.
asked by Irma on July 6, 2016 
Algebra
A tugboat goes 160 miles up stream in 20 hours, return trip downstream takes 5 hours. Find speed of tugboat without the current and the speed of the current
asked by Ruth on March 6, 2013 
physics
A bat flying in a cave emits a sound and receives its echo 0.5 s later. How far away is the cave wall? I answered this below. If you cant find it, search on bat flying in the search window above.
asked by Barry on November 5, 2006 
Algebra 2
The angular speed of a larger pulley wheel (radius=15cm) is 50 rev./min. Find the angular speed of the smaller wheel (radius=6cm).
asked by Mary on April 22, 2012 
math
(a) Use a graph of f(x) = sqrt(2x^2+9x+5)−sqrt(2x^2+2x+1) to estimate the value of lim x→∞ f(x) to one decimal place. (b)Use a table of values of f(x) to estimate the limit to four decimal places. (c)Find the exact value of the limit.
asked by Kayla on February 11, 2015 
chemistry
Lithium iodide has a lattice energy of 7.3x10^2kj.mol and heat of hydration of 793kj.mol. Find the heat of solution for lithium iodide.
asked by Cassie on September 22, 2011 
PreCalculus
Rational Functions y = (x^2+7x4)/(x2) Since the degrees of both the numerator and denominator are the same, I would use the leading coefficient, and both the rational functions start with 1, so would the horizontal asymptote be 1? Also don't get how to
asked by Shreya on October 2, 2012 
English
I have to find all the nouns and label them. Exploration is dangerous. It takes courage to sail to an unknown land. Exploration  idea Courage  idea Land  place
asked by Aveary on August 26, 2015 
college alg
Find (a) the equation of a line that is parallel to the given line and includes the given point, and (b) the equation of a line that is perpendicular to the given line through the given point. Write both answers in slopeintercept form. y = 4x + 2, (5, 4)
asked by sunny on January 4, 2012 
chemistry
CH_4 (g) + H_2O (g) > CO (g) + 3H_2 (g) How many moles of water vapor react to yield 144.84 moles of hydrogen? I am confused on how exactly how to find this yield of water vapor
asked by alex on April 3, 2019 
math
there are 7 identical spheres each colored on the inside with one color in more than 4 of them. When 2 spheres of the same color touch each other they both glow in color. Using as few comparisons as possible, find a single spehere that has the majority
asked by juliann on March 11, 2012 
Calculus
The vertical position of an object is modeled by the function h(t)=16t^2 +5t+7, where h is measured in feet and t is measured in seconds. Find the object's initial velocity (that is, the velocity at t=0). Is it 5 feet per second?
asked by Kayla on March 26, 2014 
Stiochiometry
15.8 grams of NH3 and excess O2 produces NO gas and H2O. 12.8 grams of NO gas was produced. Find the percent yield. Balanced Equation: 4 NH3 + 5 O2 > 4 NO + 6 H2O
asked by Mikey on May 15, 2011 
cocoa
Julian's shadow is 6 feet long. At the same time a 31 foot tall building casts a shadow that is 28 feet long. What proportion could be used to find Julian's height?
asked by Anonymous on May 14, 2012 
physics
Two objects (53.0 and 16.0 kg) are connected by a massless string that passes over a massless, frictionless pulley. The pulley hangs from the ceiling. Find (a) the acceleration of the objects and (b) the tension in the string.
asked by chidera on September 23, 2014 
Algebra
A store mixes red fescue worth $10 per pound and ryegrass worth $13 per pound. The mixture is to sell for $12 per pound. Find how much of each should be used to make a 120 pound mixture.
asked by Chad on June 29, 2015 
Mensuration
A sheet of paper measures 30cm by 20cm. A strip 4cm wide is cut from it all around. Find the area of the remaining sheet and also the area of the strip cut out.
asked by Sunil on February 24, 2016 
math
a 6 foot red casts a shadow that is 7 feet long. the shadow of a nearby tree is 42 feet long. slove a proportion to find the height of the tree
asked by andy on January 18, 2017 
math
Ms. Handler walks to work at an average speed of 5 kilometers per hour. If she increases her speed to 6 kilometers per hour, she will save 10 minutes. Find the distance she walks.
asked by Rob on October 12, 2015 
algebra
The value of a certain twodigit number is eight times he sum of its digits. if the digits of the number are reversed the result is 45 less than the original number. find the original number. **please show both equations and work... thanks =)
asked by Bri on February 28, 2011 
trig
If sin theta = x and pi/2 is less than or equal to theta less than or equal to pi/2, find sin 2theta and cos 2theta in terms of x. Is it alright if I recommend you to my classmates tommorow? YOu seem to know more than my professor!
asked by Priya on May 1, 2008 
Maths
A sheet of paper measuring 30cm by 20cm . A strip of Wide 4cm cut from it all around. Find the área of the remaining sheet and also the área of the cut strip
asked by Anonymous on December 1, 2017 
math
Mercy must obtain an average mark of at least 85 to get an A grade in her mathematics examination,out of the four examinations she obtained 80,85 and 82 in the first three. Find the mark she must obtain on the fourth examination of to enable her get an A
asked by Glory on June 11, 2016 
Z table
Suppose that the readings on the thermometers are normally distributed with a mean of 0∘ and a standard deviation of 1.00∘C. If 8% of the thermometers are rejected because they have readings that are too high, but all other thermometers are acceptable,
asked by Anonymous on September 25, 2015 
MAT 116
A tugboat goes 180 miles upstream in 10 hours. The return trip downstream takes 5 hours. Find the speed of the tugboat without a current and the speed of the current.
asked by Samantha on November 11, 2012 
algebra
The formula for the area of a trapezoid is A = h(B + b) 2 . The area of the trapezoid truss in the illustration is 72 square feet. Find the height of the truss shown below if the shorter base is the same as the height.
asked by f on March 21, 2014 
maths
if a hollow sphere of internal and external diameter 4cm melted 8cm respectively melted into a cone of base diameter 8cm . find the height of cone
asked by priya on March 8, 2016 
Math
Tonia deposited a total of $174.52 into her checking account. She also withdrew a total of $186.15. Use addition to find the net change in Tonia’s checking account.
asked by Caitlin on September 25, 2011 
English
What is the meter of the following line from “A Sybil” by Rilke? “Her age became too much to say” Im confused and cant find an answer. Iambic pentameter Iambic tetrameter Trochaic pentameter Trochaic tetrameter
asked by Anonymous on December 15, 2014 
mathstatistics
If the probability of an authentic laying goose is 0.83, find the probability of getting a laying goose on or before the fourht trial. I think that answer is: (0.17)(0.17)(0.17)(0.83)=.00407 *the answer needs to be rounded to three significant digits*
asked by Sherri on December 14, 2008 
statistics
I need to find the class midpoint, boundaries and class with for the following problem Tar Cigarette Filter Frequency 25 2 69 2 1013 6 1417 15 I did the midpoint and boundaries 3.5 5.5 7.5 9.5 11.5 13.5 15.5 17.5 But for the width I got an answer of
asked by ALFREDA on April 19, 2012 
Stat
Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% confidence interval for the true proportion of all adults in the town who have health insurance. Please help mr solve.
asked by Billy on October 1, 2014 
algebra
Find all rational zeros of the polynomial function P(x)=x^4 + 2 x^3  13 x^2 + 4 x  30. Enter the rational zeros in a comma separated list. If there are none, enter "none". 3 1 2 13 4 30 3 15 6 30 1 5 2 10 0 so (x+3)(x^35x^2+2x10 so 5 1 5 2
asked by kim on June 23, 2015 
English
is "six inches of snow are predicted, I'd better find my boots" a run on, simple or compound sentence. I am pretty sure its not a compound because there is no coordinate conjunction but i am not sure if it is a simple or run on sentence
asked by Pencer on April 9, 2019 
Math
The perimeter of a rectangle is 110 inches. The length exceeds the width by 41 inches. Find the length and the width. I can't seem to figure out this last question. Don;t know where to start. Please help it is my last question.
asked by Flossie on August 29, 2010 
GEOMETRY HELPPPPP MEEEE PLEASSEEEEE!!!
Find the lengths of the diagonals of this trapezoid. trapezoid on a graph with points (a,0), (b,c), (b,c), (a,0) negative a and b are on the left side (a is on bottom and b is on top) and positive a and b are on the right side (a is on bottom and b is on
asked by Anonymous on December 23, 2012 
math
87122178=6543 65434356=2178 Can you find another set of numbers with the same pattern? Now add the results you got. ..and a similar pattern by subtracting the results.
asked by Jared on June 12, 2007 
math
A bacteria culture starts with 1,000 bacteria and doubles in size every 2 hours. Find an exponential model for the size of the culture as a function of time t in hours.
asked by liz on October 7, 2010 
social studies
How did the slave trade affect the eastern shore? Also where can I find information about the Slave Trade on Maryland's Eastern shore on its economics and culture? Help is Appreciated! Thankyou
asked by Johnny on November 6, 2008 
Calculus
As an ice cube melts its surface area in decreasing at a rate of 6 cm^2 / sec. Find the rate at which the length of each side is decreasing at the moment when each side has length 2 cm.
asked by Daniel on December 11, 2015 
Language Arts
Quick question. Is Two Kinds by Amy Tan, fiction or nonfiction? This is not a question on a quiz or a quick check. I cannot find any sources online that tell me whether or not it is fiction or nonfiction.
asked by ILTHSM_ on October 1, 2018 
Business
The number of square meters in a square rooms floor area exceed the number of meters in the rooms perimeter by 60.Find the sidelength of the room.
asked by Jane on April 18, 2016 
science
a sphere A of mass 3.0kg moving at 8.0m/s collides with another sphere B of mass 5.0kg moving in opposite direction to A at 4.0m/s.find the velocities of the spheres immadiately after the impact if e=0.30
asked by yusuph on August 11, 2018 
math
The bases of trapezoid ABCD are \overline{AB} and \overline{CD}. Let P be the intersection of diagonals \overline{AC} and \overline{BD}. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD.
asked by Robert on December 8, 2013 
Algebra is my answer right
The function g is defined by g(x)=3x^2+6. Find g(5y) Algebra  drwls, Friday, February 4, 2011 at 11:07am 3*(5y)^2 + 6 = __? Algebra  Janet, Friday, February 4, 2011 at 3:56pm I get 75y+6
asked by Janet on February 4, 2011 
geometry
for that some problem: A board that is 12 feet long must be cut into 2 pieces that have lengths in a ratio of 3 to 2. Find the lengths of the two pieces. arn't you solving two parts because the board was cut in two?
asked by shannon on February 27, 2011 
Maths
A and B are two balloons at the same height and 1000 metre apart. O is a ground observation position. Angle AOX is 45 degree 15' and angle BOX is 10 degree and 30'. Find the height of the balloons.
asked by Shane on April 29, 2013 
math
a basketball hoop is 120 inches above the court. a player is 62 inches tall. find the approximate distance between th top of the player's head and the basketball hoop.
asked by shron on December 10, 2012 
Math
The sum of John's age and twice of his son's age is 56. In 8 years time, the son's age will be half of john's age. Find there present ages. Right now I wrote down an equation x+2y=56 and not quite sure what to do next.
asked by Jonathan on October 31, 2009 
math
a boat took 5 hours to travel 60 km up a river, against the current. the return trip took 3 hours. find the speed of the boat in still water and the speed of the current. if possible, show your steps
asked by jacob on June 9, 2019 
same type of binomial theorem question
Question: Find the first 3 terms in the expansion, in ascending powers of x, of (2 + x)^6. Hence, obtain the coefficient of x^2 in the expansion of (2 + x  x^2)^6 I know the first part of the question, and the first 3 terms are (64 + 192x + 240x^2 + ...)
asked by nicholas on August 4, 2009 
calculus
Find all points on the curve x^2y^2+xy=2 where the slope of tangent line is 1. This is what I got. x^2y^2+xy=2 x^2*2ydy/dx + 2x*y^2 + x*dy/dx + y =0 dy/dx(2yx^2+x)= 2xy^2y dy/dx = (2xy^2y)/(x+2yx^2) how do I finish from here? I need to know where the
asked by Riley on April 2, 2009 
algebra
A tugboat goes 180 miles upstream in 15 hours. The return trip downstream takes 10 hours. find the speed of the tugboat without a current and the speed of the current
asked by maggie on August 9, 2012 
Math
A rectangle is 40 meters longer than its width if its length were increased by 10 meters and its width would be decreased by 5 meters its area would be increased by 190 square meters. Find the dimensions
asked by Jeska on October 13, 2016 
Algebra
From a group of 6 men and 4 women, a committee of 3 is to be selected at random. Find P(at least 2 women). It might be a little out of order but this is what I got. C(10,2) (10*9*8*7*6*5*4*3*2*1)/(8*7*6*5*4*3*2*1*2*1) =45 C(6,2) (6*5*4*3*2*1)/(2*1) =360
asked by Jon on March 5, 2008 
math
Christie pilots her plane for 360 mi against a headwind in 33 hrs. The flight would take 22 hrs and 15 mins with a tailwind of the same speed. Find the headwind and the speed of the plane in still air.
asked by JULIA on October 16, 2016 
Statistics
If there are 6 red disks numbered 1 through 6, and 4 yellow disks numbered 7 through 10, find the probability of selecting a yellow disk given that the number selected is less than or equal to 4 or greater than or equal to 8.
asked by SHEYLAMIEL on October 16, 2016 
biology
Im carrying out an investigation on respiration, comparing the different rates in maggot tissue and mung beans. i was wondering if you could help me to find out why maggot tissue and mung beans are efficent to use?
asked by Kat on June 18, 2008 
math
bob has a container with a capacity of 12 quarts. he wants to express this capacity in gallons. write a proportion to find the number of gallons of water bob's container can hold.
asked by pavleen on February 10, 2011 
MATH_URGENT
The bases of trapezoid ABCD are \overline{AB} and \overline{CD}. Let P be the intersection of diagonals \overline{AC} and \overline{BD}. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD.
asked by RhUaNg on April 27, 2014 
Maths
There are 50 students in a class of which 40 are boys and the rest are girls the average weight of the class is 44kg and the averageweight of the girls us 40kg. find the average wieght of the boys
asked by priya on March 15, 2015 
Geometry
One hundred tiles of a certain size are needed to pave a floor. If a tile, which measures 4 cm less on each side, will be used, 225 tiles will be needed. Find the size of the larger tile.
asked by Ivyl on August 2, 2011 
Math radical form
Find the distance of the line segment whose endpoints are (5,7) and (2,3) in simplest radical form. sqrt [(73)^2 + (5 (2))^2] = sqrt [16 + 49] = sqrt 65 That is the simplest form I can think of. sqrt means "square root of"
asked by sheka on August 11, 2007 
Calculus,reaction rates
A car starting at 12:00 noon travels west at a speed of 30 kph. Another car starting from the same point at 2:00 PM travels north at 45 kph. Find how fast the two are separating at 4:00 PM?
asked by @jayr on November 30, 2014 
Basic Caluculus
f(x)=2x^3x^2+1 [1,4]=interval Using the limit process, (once with right endpts, and the other with left entdpts.) find the area under the curve and above the xaxis on the given interval i got the area to be 107.5 for right endpts. (not sure if its right)
asked by Munni on May 29, 2011 
Probability
From a box containing 7 blue, 5 red, 3 green, and 9 yellow marbles, 2 are drawn one at a time without replacing the first marble before the second marble is drawn. Find the probability that one is blue and one is yellow.
asked by Amanda on May 2, 2012 
physics
An 85kg jogger is heading due east at a speed of 2.0 m/s. A 55kg jogger is heading 22° north of east at a speed of 2.7 m/s. Find the magnitude and direction of the sum of momenta of the two joggers.
asked by Anonymous on January 12, 2015 
Writing
Where Can i find some short current event articles? http://www.nytimes.com http://www.latimes.com http://www.pe.com http://www.time.com That is, just about any newspaper or newsmagazine. =)
asked by Bryan on February 26, 2007 
math
calvin buys 3/5 pound of ground beef. he divides the beef into 6 equal portions. a)find the weight of 1 portion of beef. b)fin the weight of 4 portions of beef.
asked by Shohanur on February 8, 2013 
algebra
Use the discriminant to find out whether this quadratic polynomial can be factored. Factor the polynomial if it is not prime. This polnomial is prime, so I cannot factor it. I just need help with the discriminant part. Thaks in advance for your help.
asked by Trina on September 3, 2010 
chemistry
There are exactly 60 seconds in a minute, there are exactly 60 minutes in an hour, there are exactly 24 hours in a mean solar day, and there are 365.24 solar days in a solar year. Find the number of seconds in a solar year.
asked by Mely on September 3, 2010 
math
"Mahpee was selling magazine subscriptions. He earned $5 plus $0.50 for each subscription he sold. If Mahpee earned $25, use the equation 25=5 + 0.50n to find the number of subscriptions n he sold." How do I figure this out??
asked by Rinoa on September 21, 2010 
Physics
An 85 kg jogger is heading due east at a speed of 1.7 m/s. A 55 kg jogger is heading 40° north of east at a speed of 3.4 m/s. Find the magnitude and direction of the sum of momenta of the two joggers.
asked by Will on April 1, 2008 
College Algebra
The equation for the total revenue earned by a company for selling widgets is p=4q. The equation for the total cost of the company for producing widgets if p=q+6. Find the breakeven quantity.
asked by Sarah on November 21, 2013 
Math
Under ideal conditions, a population of rabbits has an exponential growth rate of 11.8% per day. Consider an initial population of 300 rabbits. Find the exponential growth function.
asked by Sarah on December 6, 2016 
math, geometry
The bases of trapezoid ABCD are \overline{AB} and \overline{CD}. Let P be the intersection of diagonals \overline{AC} and \overline{BD}. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD.
asked by Anonymous on April 27, 2014 
STATISTICS
A study has shown that among people without any preschool education, 32% were employed at age 19. If 100 people without preschool education are selected, find the probability that 40 or fewer are employed.
asked by Sonny on October 28, 2009 
Math
The area of a rectangular garden is 110 square meters. The width is 6 meters loner than onehalf of the length. Find the length and the width using area=lengthxwidth
asked by Amber on April 30, 2013 
algebra
Find the number of degrees in the measure of one of the base angles of an isosceles triangle, if the measure of the vertex angle is 36 degrees less than the sum of the measures of the base angles.
asked by mw on January 14, 2011 
Algebra 2
The red spinner has six equal sectors labeled with numbers 1 through 6. The blue spinner has four equal sectors labeled with letters A, B, C, and D. Find the probability of spinning the two spinners and getting a 5 with a B?
asked by Megan on February 28, 2012 
algebra
a tugboat goes 160 miles upstream in 20 hours. The return trip downstream takes 5 hours. Find the speed of the tugboat without a current and the speed of the current.
asked by ashley on August 19, 2012 
Maths
A shopkeeper has false balance. It weighs 10% profit when buying goods and weighs 10% loss when selling goods. Find the profit and loss percent by weighing?
asked by Rabin on August 27, 2016 
geometry
Find the number of degrees in the measure of one of the base angles of an isosceles triangle, if the measure of the vertex angle is 36 degrees less than the sum of the measures of the base angles.
asked by lorie on January 14, 2011 
Algebra II
The future value of $6000 invested for 5 years at rate r, compounded annually, is given by S=6000(1+r)^5. Find the rate r, as a percent that gives a future value of $8415.31. Round to the nearest whole percent.
asked by Shay on July 7, 2011 
math
A candidate believes that 2/3 of the registered voters in his district will vote for him in the next election. If two registered voters are independently selected at random, find the probability that neither will vote for him in the next election.
asked by ALAINI on May 31, 2011 
Algebra II
The future value of $6000 invested for 5 years at rate r, compounded annually, is given by S=6000(1+r)^5. Find the rate r, as a percent that gives a future value of $8415.31. Round to the nearest whole percent.
asked by Shay on July 7, 2011 
Pre calc
Thanks in advance for any help. I need help with this whole problem. The distance s(t) between an object and its starting point is given by the antiderivative of the velocity function v(t). Find the distance between the object and its starting point after
asked by Peter on May 14, 2008 
Geometry
Segment AD is perpendicular to the radius of circle (B) and the radius of circle (c). If radius BA=6in, segment AD=21in and radius CD=16in, find the length of BC to the nearest tenth of an inch.
asked by Ben on May 10, 2016 
Physics
A light Ray is incident at an angle of 45 degrees on one side of a glass plate of index of refraction 1.6. Find the angle at which the ray emerges from the other side of the plate
asked by Gela on August 4, 2015 
STATISTICS
Consider a binomial random variable where the number of trials is 12 and the probability of success on each trial is 0.25. Find the mean and standard deviation of this random variable. I have a mean of 4 and a standard deviation of 2.25 is this correct
asked by John on June 10, 2010
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