Questions Asked on
March 16, 2013

calculus
By cutting away identical squares from each corner of a rectangular piece of cardboard and folding up the resulting flaps, an open box may be made. If the cardboard is 14 in. long and 6 in. wide, find the dimensions of the box that will yield the maximum
asked by eve 
physics
A snowmobile is originally at the point with position vector 31.3 m at 95.0° counterclockwise from the x axis, moving with velocity 4.77 m/s at 40.0°. It moves with constant acceleration 1.92 m/s2 at 200°. After 5.00 s have elapsed, find the following.
asked by wallu 
physics 20
Two people, a and b, are pulling on a tree with ropes while person c is cutting the tree down. Person a applies a force of 80.0N (45.0degrees) on one rope. Person b applies a force of 90.0N (345degrees) on the other rope. Calculate the net force on the
asked by Rose 
AP Chemistry
A biochemist prepares a lactic acidlactate buffer by mixing 225 mL of 0.85M lactic acid with a Ka=1.38*10^4 with 435mL of 0.68M sodium lactate. What is the buffer pH? I know I have to use the equilibrium constant expression, but I'm pretty lost from
asked by Mike 
Managerial Finance
A firm has an issue of preferred stock outstanding that has a par value of $100 and a 4% dividend. If the current market price of the preferred stock is $50, the yield on the preferred stock is
asked by Henry 
BiologyEcology
Multiple choice What is the ultimate source of energy for most ecosystems, and in what form does the energy leave the ecosystem? 1. plants; animals 2. light; heat 3. plants; heat 4. producers; consumers 5. heat; light
asked by Amy 
science
water freezes in the crack in this boulder and expands. over time, pieces of the boulder will break off. what type of weathering effectis this an example of? a. wedging b. hydration c. carbonation d.reduce pressure
asked by mary 
Physics
A spacecraft in orbit around the moon measures its altitude by reflecting a pulsed 10Mz radio signal from the surface. If the spacecraft is 10km high what is the time between the emission of the pulse and the detection of the echo?
asked by Peter 
math
(6a^4b+ab^3)+(3ab^36a^4b)
asked by ang 
Health Care Man.
Which answer below includes the major glands ofo the endocrine system? A. Pituitary,thymus,thyroid,parathyrod,adrenal,pineal B. Pituitary,thymus,thyroid,kidney,adrenal,ovaries C.Pituitary,thyroid,parathyroid,adrenal,gall bladder,pineal D.
asked by Ms. Pecan 
Business Stats
A busy restaurant determined that between 6:30 P.M. and 9:00 P.M. on Friday nights, the arrivals of customers are Poisson distributed with an average arrival rate of 4.32 per minute. What is the probability that at least 1 minute will elapse between
asked by John Barclaey 
MATHS
the base BC of a triangle ABC is divided at D so that BD=1/3 BC .prove that ar(triangle ABD)=1/2 ar (triangle ADC)
asked by BAISHALI 
Chem
The mass of a single uranium atom is 4.70E22 grams. How many uranium atoms would there be in 164 milligrams of uranium?
asked by Tez 
mathstrignometry
Prove that tan1 (1/7) + tan1 (1/13) = tan1(2/9)
asked by anoynomous 
Math
Find the volume of the cylinder. Use 3.14 for (π Pi) 34 m on top and 27 m down on the right. Please Help Me I try and try and nothing please please help me !!!!! :( :(
asked by Selena 
physical science
A 150L water heater is rated at 8 kW .If 20 percent of its heat escapes, how long does the heater take to raise the temperature of 150 L of water from 10C to 60C?
asked by jake 
physics
A car is stopped for a traffic signal. When the light turns green, the car accelerates, increasing its speed from 0 to 5.85 m/s in 0.712 s. What is the magnitude of the linear impulse experienced by a 70.5 kg passenger in the car during this time?
asked by Anonymous 
biochemistry
perform the calculation required for100ml of 0.2 M sodium acetate buffer of pH 5.0. If you are given a bottle of sodium acetate acetate(mw =82 and a bottle of concentrated HCl of normality =11.7). After the calculation, prepare the buffer , check the pH of
asked by Abdullateef 
Physics
Consider a pair of parallel plates with a potential difference of 12 V and are separated by 12 cm. What is the potential energy of a 1.0 C charge at point A, exactly 30. cm from each plate?
asked by Dan 
Please help! quadratic equation
Given the following quadratic equation find. a) the vertex b) the axis of symmetry c) the intercepts d) the domain e) the range f) the interval where the function is increasing g) the interval where the function is decreasing h) graph the function y=
asked by Jenn 
English
How is an autobiography, such as A White House Diary, different from a biography?
asked by Shaunta Davis 
Algebra
width W or a rectangular swimming pool is 7x^2. The area of the pool is 7x^342x^2. what expression for the length of the pool? please walk me through this.
asked by Brieson 
Elementary Algebra
The manager of a farmer's market has 500lb of grain that costs $1.20 per pound. How many pounds of meal costing $.80 per pound should be mixed with the 500lb of grain to produce a mixture that costs $1.05 per pound?
asked by Takeyia Patrick 
chemistry (Pls Bob check for me)
A 150 mg/dl glucose solution was diluted 1:2. Then 0.5ml of it was added to 4.5ml saline 2 ml of this solution was diluted to 10ml. What is the final concentration of glucose? 1L= 10dl 1dl =100mL Answer 0.015mg/dl
asked by Fai 
Chemistry
A 5.00L reaction vessel is filled with 1.00mol of H2, 1.00mol of I2, and 2.50mol of HI. If equilibrium constant for the reaction is 129 at 500k, what are the equilibrium concentrations of all species? H2(g) + I2(g) 2HI(g) Kc = 129
asked by Presh 
algebra
square root of asquare root of b =
asked by santhosh 
chemistry (Pls Bob check for me)
A 150mg/dl glucose solution was diluted 1:2. Then 0.5ml of it was added to 4.5ml saline. 2ml of this solution was diluted to 10ml. What is the final concentration of glucose? 1L = 10dL 1dL = 100mL My own calculation 150mg/dL = 150mg/100ml =1.5 150mg/100ml
asked by Fai 
South America
an aeroplane flies horizontally at 80m/s in still air if the aviator wishes to fly due south and the wind is blowing from the southeast at 30m/s 1.what course must he steer 2.how long will it take him to arrive at his destination 200km away
asked by Mehmood 
mathsprobabilty(urgenlty)
A chairman is biased so that he selects his relatives for a job 3 times as likely as others. If there are 3 posts for a job. Find the probability distribution for selection of persons other than their relatives.
asked by anoynomous 
Physics
A 500 kg elevator starts from rest. It moves upward for 4.00 s with constant acceleration until it reaches its cruising speed, 1.75 m/s. (a) What is the average power of the elevator motor during this period? (b) How does this power compare with the motor
asked by Michelle 
math
A score of 243 is a "basic" reading level. Scores for a random sample of 3000 students had a xbar = 250 with a standard error 1.0 The 99% confidence interval for the mean score all students in the city is 247.4 to 252.6. Ques: Is there good evidence that
asked by please help 
Math  Grade 5
A shop sells candies by weight. Monisha bought 2 full bags of chocolates and 3 full bags of gummy bears for $23.50. If 3/4 of a bag of chocolate cost as much as 5/6 of a bag of gummy bears, find the cost of 1 full bag of chocolates.
asked by Ashley 
Physics 11th grade 'Heat' `
1) While Laurie is boiling water to cook spaghetti, the phone rings, and all 1.5 kg of water boils away during her conversation.If the water was initially at 15℃, how much heat must have been gained for all of it to turn into a water vapor? 2)By January,
asked by Isis 
Mathematics
The bearing of Q from P is 060¤ while the bearing of R from Q is 150¤ if PQ=QR find the bearing of R from P
asked by Hope 
Physics
John is pushing a wheelbarrow filled with sand on a building site the total mass of the wheelbarrow and its content is 30kg. When he applies force of 20 the wheel barrow moves forward at constant speed. What is the Magnitude of the friction between the
asked by neo 
math
if i drive home with a speed of 60km/h,I will arrive an hour ealier than expected.If i drive 40km/h then i will arrive an hour later than expected.At what speed should i travel in order to arrive BANG on time?
asked by wan 
Physics
A skier of mass 66 kg skis straight down a 11° slope at constant velocity. Draw a freebody diagram of the skier with the various external forces acting on her. Include the force of air resistance, which is directed opposite the velocity. (Do this on
asked by Help 
Chemistry
Suppose it is a hot summer day (40.0 degrees C = 104.0 degrees F), and you have left a can of hairspray outside so the gas within it is now at the same temperature of its surroundings. As part of your chemistry lab class, you have to build a safe and
asked by Anonymous 
math
The diagram shows a sector OAB of a circle, centre O and radius10 cm. Angle AOB is theta radians. The point C lies on OB and iss such that AC is perpendicular to OB. The region R is bounded by the arc AB and by the lines AC and CB. The area of R is 22cm^2
asked by James 
Chemistry
Suppose it is a hot summer day (40.0 degrees C = 104.0 degrees F), and you have left a can of hairspray outside so the gas within it is now at the same temperature of its surroundings. As part of your chemistry lab class, you have to build a safe and
asked by Tonya 
Maths A
The Bough and Bud Company combined an insect spray with a growth hormone to produce the MOP (More Oranges Production) Treatment, which was expected to increase the number of oranges produced by each tree. The data below shows the number of oranges produced
asked by Anne 
Chemistry
For calculating the concentration of a metal Ion in Equilibrium with a complex ion...how do I get the right hand side of this equation to equal 5.9 E 8? x(0.98 + 2x)2 _____________ = 1.7 E 7 (0.010x) then, x(0.98)2 ________ = 5.9 E 8 0.010 I understand
asked by Lisa 
Math
The heart shaped card is made by placing a square card and two semicircles together. What is the area of the card. each side of the sqare is 8cm long. I did a=TTr(squared)+lw A=TT4squared+8(8) A=TT16+64 A=80TT A+251.3274123 A=251.3 cm(squared) The total
asked by Ellie 
Math
If I have 15 flavors of ice cream and 81 different toppings, how many different combinations could I create (assuming only 1 flavor of ice cream in the container at a time)? I got 36267774588438900000000000 ??? IS THIS RIGHT???
asked by Dan 
Chemistry
0.25mol of CO are mixed with 0.90mol of H2 and heated to 950 degrees celcius in a 15L flask at equilibrium 0.190mol of H2O were present, what is the concentration of the other reactants and products at equilibrium and what is Kc
asked by Elena 
statistics
The starting salaries of a random sample of three students who graduated from North Carolina State University last year with majors in the mathematical sciences are $45,000, $50,000, and $40,000. Find a point estimate of the population mean of the starting
asked by Quintunya 
math
4c(11c²) distribute the multiplication over the addition
asked by jessie 
Chemistry
Hydrocinnamoyl chloride + AlCl3 > ??
asked by Student 
7 Science Astrologyish
250 pound person goes to the moon, how much do they weigh there?
asked by rockrboiluvr 
maths vector
if a vector+ b vector+ c vector =0, & a vector=3, b=5, c=9, find angle between a & b vector
asked by Anonymous 
MATH
CAN U TELL ME MORE ABOUT IDENTITIES
asked by ZAMA 
Spanish 2
I need help picking the rightsentence form? Thanks ¿Quién te sacó estas fotos? A. Julio me los sacó. B.Julio te las sacó. C.Julio me las sacó. ¿Quién les mandó estas flores a Uds.? A.Ceci nos los mandó. B.Ceci nos las mandó. C.Ceci se las
asked by Jessica 
maths
can you help with adding the following wave sines 30sinѲ(Ѳ+60o)+50sin(Ѳ45o)
asked by dylan james 
physics
32.6 gram mass is whirled on a cord 131 cm long at a speed of 6 m/s. What is the centripetal acceleration of the mass in MKS units ?
asked by Anonymous 
Math
Evaluate the following indefinite integrals. Show all steps please A) ∫xe^x^2+10 dx b) ∫(1/2x+x)(ln(x)+x^2)^10 dx
asked by Kevin 
MATH
If I pick a number between 1 and 99, what is the probability that someone else in my class (30 students) will pick that same number?
asked by Michael 
English 4
Mcbeth ActII page .373 quesztions and answers
asked by Anonymous 
BiologyEcology
Multiple choice: For a natural ecosystem to be selfsustaining, many compounds must be: 1. converted into new forms of energy. 2. cycled between organisms and the environment. 3. permanently removed from the environment. 4. changed into fossil fuels such
asked by Amy 
Chemistry  reaction kinetics
So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions: Lab Temp 0.2°C Experiment Trial Time in seconds Trial 1 Trial 2 Average Time 1 1 2 256 275 268 2 1 2 215
asked by Jordan 
journalism/english
I need help paraphrasing and editing this: any suggestions? Cummings says that it varies whether students come back to the Career Zone or not. She says sometimes they make followup appointments with students, or make the suggestion that students return
asked by Blaze 
accounting
Normal price of miniscooters are $120 per scooters, ABC estimates 400,000 scooters to be sold for Year 2013. Material costs are $20,0000 per year to produce these scooters. Variable costs are $10.00/per mile delivery and $50.00/scooter for handling
asked by George 
accounting
Normal price of miniscooters are $120 per scooters, ABC estimates 400,000 scooters to be sold for Year 2013. Material costs are $20,0000 per year to produce these scooters. Variable costs are $10.00/per mile delivery and $50.00/scooter for handling
asked by George 
Physics
A standard man uses a bicycle of mass 30 kg to travel at constant speed along a 5 km long road up a hill. The hill rises 250 m above the starting point and the man needs 30 minutes to get to the top. How much work does the man do during the trip? What was
asked by Some Guy 
computer
What does tenure track, part time instructor of computer science does? To be computer science where can you do volunteering?
asked by maz 
mathsdifferentaition
y=cos^1[(1x^2)/(1+x^2)] find dy/dx
asked by anoynomous 
Chemistry
0.194M NaOH and 0.268 M NH4CL Find concentration of OH
asked by Pepz 
Finite Math
A Specialty shop owner used a revenue function and a costvolume function to analyze his monthly sales. one month he found that with a sales volume of 1465 items he had revenues of $32,962.50 and a total cost of $26,405.50. Another month he had total costs
asked by Matt 
world history
Any ideas to build a hippodrome for a school project
asked by liz 
English
Which is the better strategy for increasing comprehension? A. Paraphrase what you read. B. Take notes word for word so as not to lose the meaning intended. C. Summarize only chapter by chapter. D. Take notes only when you are unclear of a concept. I think
asked by Leighanne 
Reading
Do you have the story animal senses
asked by Claudia 
maths
How many distinct prime factors does 100100 have?
asked by atharv 
physics
3 An electric motor can accelerate a Ferris wheel of moment of inertia (I =20 000 kg.m2) from rest to (10.0 rev/min) in (12.0 s). When the motor is turned off, friction causes the wheel to slow down from (10.0 to 8.00 rev/min) in (10.0 s). Determine (a)
asked by a 
math
I asked this earlier today but did not get help. Can you please let me know if this question is done properly? Thank you Camern is wrapping a present. She does not want any left over wrapping paper. How much wrapping paper does she need to buy. The length
asked by ES 
Math Q.
x/2  (3x+1/3) < 1/4 My answer was x > 0.25 , but im not positive.
asked by Mia 
calculus
Consider the interval I=[6,7.6]. Break I into four subintervals of length 0.4, namely the four subintervals [6,6.4],[6.4,6.8],[6.8,7.2],[7.2,7.6]. Suppose that f(6)=19, f'(6)=0, f'(6.4)=−0.5, f'(6.8)=−0.1, and f'(7.2)=−0.1. What is the approximate
asked by lisa 
algebra URGENT HELP
x+14/x8 ≥ 1 solve and write solution in interval notation
asked by zachary 
math
Value of a new car depreciates at a rate of 12% per year. Approximately how many years will it take until the car is worth $2300?
asked by Hasane 
Statistics
During September, the average temperature of Laurel Lake is 64.2º and the standard deviation is 3.2º. Assume the variable is normally distributed. For a randomly selected day, find the probability that the temperature will be a. Above 62º b. Below 67º
asked by Penny 
Algebra
trianglefind the length of the missing side? a= 16, b = 63 please walk me through this.
asked by Brieson 
Algebra
square frame occupies area of 112 ft ^2. what is the length of each side of the picture in simplified radical form?
asked by Brieson 
math
Value of a new car depreciates at a rate of 12% per year. It is worth $23 000. Approximately how many years will it take until the car is worth $2300?
asked by Hasane 
Math trigonometry
Find the measures of the acute angles of a right triangle whose legs are 9 cm and 16 cm long.
asked by Kaitlyn 
Chemistry  URGENT
So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions: Lab Temp 0.2°C Experiment Trial Time in seconds Trial 1 Trial 2 Average Time 1 1 2 256 275 268 2 1 2 215
asked by Jordan 
Given the following rational function
Given the following rational function, find a) the horizontal asymptote(s), b) the vertical asymptote(s), if any, and c) the oblique asymptote(s), if any. F(x) = x^2x2/2x^2x2
asked by Jenn 
Science
why nh4cl is not used in place of nacl to prepare hcl?
asked by Ashritha 
math
Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.65 times 10^5 watts/cm^2
asked by Andrew 
calculus
I have spilled 200cm^3 of vegetable oil on my kitchen floor. The resulting oil slick can be modeled as a cylinder with a very small height; the height is decreasing at a rate of 1/1000πcm/sec and the radius is currently 50cm. How quickly is the radius of
asked by lisa 
physics
A solid cylinder of mass 20 kg rotate about its axis of rotation with angular speed 100m/s. The radius of the cylinder is 0.25m. What is the K.E. associated with the rotation of the cylinder what is the magnitude of the angular momentum of the cylinder
asked by shubham mahur 
Physics
In a resonancetube containing air, the source of sound is a small loudspeaker driven by a variablefrequency oscillator. The distance between successive antinodes is 10 cm for a frequency of 1625 Hz. When the frequency is slowly reduced, the standing wave
asked by Priscy 
Algebra
The perimeter of a rectangle equals the sum of its lengths of its 4 sides. If the width of a rectangle is 4 inches and its perimeter is 38 inches, find the length of the rectangle.
asked by Libby 
Science
Name the two forms of oxygen element found in atmosphere. Which one among them grievuing depleted?state and explain the reason?
asked by Aman 
chemisty
3.14M NaN3 (pKb=9.28) is titrated with .663M HClO4 until it reaches the equivalence point. How do you calculate the pOH at the equivalence point. I tried and got something around 9 but its not correct i used a table but without liters given i have not idea
asked by sreedevi 
math
Camern is wrapping a present. She does not want any left over wrapping paper. How much wrapping paper does she need to buy. The length of the box is 15in, the width is 3in and the height in 7 in. I did it this way. front and back(height) SA=lw*2 SA=15(7)2
asked by ES 
algebra
simplify the rational expressions. State any excluded values. 1. 3x6 2. x  2 ______ ______ x^2 + 3x10 x2 please walk me through this
asked by Brieson 
Child Development
Baby eniko grasps her mother's hair, gazes into her eyes, and smiles. These actions bring eniko close contact w/her mother, which comforst her. according to bowlby's theory of attachment, eniko is the ____ phase. a. reciprocal relationship b. clearcut c.
asked by Anonymous 
Algebra
simplify each radical expression: 1. sqrt 75 + sqrt3 2. sqrt 7 (sqrt14 + sqrt 3) please walk me through this.
asked by Brieson 
science
two waves are traveling through the a container ofnitrogen . the amplitude of the first wave is .3 cm and the amplitude of the second wave is .9 cm. what is true about the two waves? a. the energy of the first wave is less than the second wave. b. the
asked by mary 
math
12.55=660 660/12=$1.05
asked by tala 
Algebra
use right trianglefind the length of the missing side : b=2.1, c = 2.9
asked by Brieson 
algebra
10 ft ladder leans against wall its foot braced 3 ft from wall's base. how far up the wall does the ladder reach? please walk me through it
asked by Brieson 
statistics
Compare the standard deviation for the heights of females 2.533 and males 4.21
asked by Anthony 
Math
3 ( 3n + 3) =15
asked by Tammy 
Chemistry
Suppose you have to prepare 1.00 L of the solution ( KH2PO4 and Na2HPO4 pH=7.31) and that this solution must be isotonic with blood (have the same osmotic pressure as blood). What mass of KH2PO4 would you use?
asked by Pepz 
Chemistry
You are to prepare a KH2PO4 and Na2HPO4 solution with pH=7.31. What should the concentration of [2(HPO4) 2] / [H2PO4]
asked by Pepz 
Chemistry
Suppose you have to prepare 1.00 L of the solution ( KH2 PO4 and Na2 HPO4 pH=7.31) and that this solution must be isotonic with blood (have the same osmotic pressure as blood). What mass of KH2 PO4 would you use? b) What mass of Na2 HPO4 . 12 H2O would you
asked by Pepz 
mathsdifferentaition
y=cos^1[(1x^2)/(1+x^2)] find dy/dx
asked by anoynomous 
mathsfunctions
one one function (what are its conditions)
asked by anoynomous 
French
May someone checck for me please? Vous voules ENGAGEZ contre les INEGALITES LUTTER une cause juste? MENER un combat contre le racisme et pour le RESPECT des differences
asked by Mia 
mathematics
How many ordered pairs of solutions (a,b) are there to a/b−b/a−2/a−2/b=0, where a and b are integers from −100≤a,b≤100?
asked by harsh 
Mathematic
how many decimetres are there in a kilometre?
asked by Abdallah ally abdallah 
Chemistry
How are a mix of pre1982 and post1982 pennies a misleading or incorrect analogy for actual element isotopes?
asked by Julie 
mathstriangle
If all three altitude , median and perpendicular bisector are same , then the triangle is
asked by anoynomous 
kivule secondar Mathematic
how many decimetres are there in a kilometre?
asked by Abdallah ally abdallah 
math
find the next time both buses will leave Central Station at the same time. Show or explain how you found your answer.
asked by houston 
math
A square pyramid has a slant height of 13 meters and a height of 12 meters. What is the surface area if the square base has sides of length 10 meters? 360 m2 320 m2 260 m2 120 m2
asked by stephanie 
statistics
The highest point in the scatter is the point for Illinois, at 1807. The two just below it, at 1778 and 1777, are for Minnesota and Iowa. The lowest points are at 1391 and 1385, for Maine and D.C. respectively. Pick all the options that are correct. The
asked by Anonymous 
history
Include a description of how slavery evolved in the various regions of British America.
asked by Nica 
history
What liberties, if any, were extended to slaves from one region to another?
asked by Nica 
history
What was the impact of the Stono Rebellion?
asked by Nica 
Physics
Sewage at a certain pumping station is raised vertically by 5.57 m at the rate of 1 860 000 liters each day. The sewage, of density 1 050 kg/m3, enters and leaves the pump at atmospheric pressure and through pipes of equal diameter. (a) Find the output
asked by Michelle 
Math
What is the surface area of a cube whose sides measure 5 inches? I did A= s squared A=5 squared 25 inches squared Then SA= 25*6=150 inches squared Is this correct? Thank you
asked by B6 
Chemistry
The Ksp of magnesium hydroxide, Mg(OH)2, is 5.61 × 10^12. Calculate the molar solubility of this compound. Is the answer 1.1*10^4 M?
asked by Anon 
Chemistry
Sodium sulfate is slowly added to a solution containing 0.0500 M Ca^2+ (aq) and 0.0390 M Ag^+ (aq). What will be the concentration of Ca^2+ (aq) when Ag2SO4(s) begins to precipitate? What percentage of the Ca^2+ (aq) can be separated from the Ag^+ (aq) by
asked by Anon 
Chemistry
At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.49. What is the Ksp of the salt at 22 °C?
asked by Anon 
science
what is the difference between an element and a particle?
asked by Anonymous 
MATH 112 helpl please
Bill brought four times as may apples as harry and three times as may apples as martin. If Bill, and martin purchased less than a total of 190, apples, what is the greatest number of apples that bill could have purchased?
asked by Shawn 
Math
Find the solution and round to the hundredths. 24 divided by 0.865. I got two answers I'm confused.
asked by Jessica 
fractions
Harry spent one third of his money on a hat, 1/6 of his money on socks, and $12.00 on a tie. How much did Harry spend?
asked by Christine 
Astronomy
Black holes can be completely described by which three parameters? angular momentum, spin, and electric charge angular momentum, density, and radius mass, angular momentum, and electric charge mass, angular momentum, and radius
asked by qwerty 
Astronomy
Mergers of two supermassive black holes will be major sources for observations of gravitational waves in the future. What do gravitational detectors aim to detect? Tiny shifts of fixed objects due to the rippling of space. Sound waves carried by cosmic
asked by qwerty 
Astronomy
Which event is likely to trigger rapid growth in supermassive black hole mass? A merger of two gasrich galaxies. Direct collisions of stellarmass black holes in collapsing globular clusters. Tidal disruption of a dwarf elliptical galaxy by a large
asked by qwerty 
IT
Can someone help me with this? Design an application or site that presents and explains your Implementation Plan. The site must include all sections of the plan and related content and consist of multiple web pages. Demonstrate the following
asked by MistyBlue 
Math  Grade 5
After saving 4/5 of his salary every month, Zacky has $150 left. Micah saves 6/7 of his salary every month. If both guys save an equal amount each month, how much is their combine salary?
asked by Ashley 
Chemistry AP
It was determined that a 0.10 M solution of an acid was only 2.5% ionkzed. Find the Ka and pKa for the acid.
asked by Jordan 
maths
ABCD is a trapezoid with AB parallel to DC. If AB = 25, BC = 24, CD = 50 and AD = 7, what is the area of ABCD?
asked by abc9837 
Physics
An object is dropped from rest. What is its instantaneous speed when it has been in motion for 7 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m/s
asked by Ethan 
physics
A basketball player is standing on the floor 10.0 m from the basket as in Figure P4.50. The height of the basket is 3.05 m, and he shoots the ball at a 40.0o angle with the horizontal from a height of 2.00 m. (a) What is the acceleration of the basketball
asked by saad 
Physics
A series of pulses, each of amplitude 0.190 m, are sent down a string that is attached to a post at one end. The pulses are reflected at the post and travel back along the string without loss of amplitude. (a) What is the displacement at a point on the
asked by Jenna 
Geometry
What translation rule can be used to describe the result of the composition of (x, y) (x – 9, y – 2) and (x, y) (x + 1, y – 2)
asked by Neely 
French
For my French homework, I have written a letter of motivation. I would be grateful if you could read it and suggest where I could improve. Monsieur, J’ai objectif de travailler dans le domaine service client. Je voudrais être responsable grands comptes
asked by Kiran 
chemistry
0.315 M 2(NH4)SO4 and 0.488 M NH3 Calculate concentration of OH
asked by Pepz 
physics
Two identical thin wires are oriented along the x and y axes. With current on x plane going North. Current on y plane going West.Both carry the same current I, and there is no electrical contact between the wires. The points A, B, C, D are each equidistant
asked by Melissa 
Office Management
When conducting a performance appraisal, it's important for the supervisor to A. provide only positive feedback no matter what the actual performance has been. B. avoid addressing employee concerns until after the appraisal has been signed by the employer.
asked by Maria 
accounting
Dan and Joan want to buy an airplane. They find one that will cost $200,000. They must pay 10% down, and can get the balance financed with a 10 year loan at 7% interest and annual payments. What is their annual payment? Answer $26,826 $25,626 $24,457
asked by chris 
maths
what is the domain of f(x)=3/4_x^2+log(x^3_x)
asked by Anonymous 
physics
The engine on a 0.2kg model airplane exerts a forward force on the plane of 10N. If the plane accelerates at 2m/s2, what is the magnitude of the resistive force due to the wind acting on the airplane?
asked by sarah 
MATHS
HOW MANY QUIDULATERALS ARE THER
asked by SUE 
business forcasting
find out local government budget including allocation, various sectors, amount and project
asked by richgift 
geometry
to find the height of a tree, a student 53 inches in height measures the length of the tree's shadow and the length of his own shadow. The student casts a shadow 63 inches in length and the tree casts a shadow 67 inches in length
asked by eric 
Mathematics
The bearing of Q from P is 060¤ while the bearing of R from Q is 150¤ if PQ=QR find the bearing of R from P
asked by Hope 
algebra
A television screen measures 32 inches diagonally, and its aspect ratio is 4 to 3. Find the width and the height of the screen. (Round your answers to one decimal place.)
asked by Cassie 
math
4 digit number 12*6 is a perfect square.the value of the digit represented by * is ?
asked by wan 
math
2candles,one green and one red,are lit at the same time.The green candle burns twice as fast as the red one.The green candle burns burns out after 6 hours,how much time will elapse before the red candle burns out ?
asked by wan 
Chemistry
So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions: Lab Temp 0.2°C Experiment Trial Time in seconds Trial 1 Trial 2 Average Time 1 1 2 256 275 268 2 1 2 215
asked by Jordan 
math
when you reverse the digits of the number 13,the number increases by 18.how many other 2digit numbers increase by 18 when their digits are reversed ?
asked by wan 
physics
Can someone explain the term magnitude when it comes to momentum
asked by Anonymous 
Physics
A plastic ball fallen 2m onto a hard floor and bounces to a height of 1.8m. Find: {1}coefficient of restitution of the collision {2}the height of the next ball bounce
asked by Pretender 
Physics
A plastic ball fallen 2m onto a hard floor and bounces to a height of 1.8m. Find: {1}coefficient of restitution of the collision {2}the height of the next ball bounce
asked by Pretender 
math
Suppose that x is normally distributed with a mean of 10 and a standard deviation of 3. Find P(x ¡Ü 6). Note: Round your answer, if necessary, to two places after the decimal. Please express your answer with two places after the decimal.
asked by Keisha 
english
give a paragraph by underlineing the verbs
asked by verbs in paragraph 
physics
An 8.64g bullet is fired into a 365g block that is initially at rest at the edge of a table of h = 1.11 m height The bullet remains in the block, and after the impact the block lands d = 1.87 m from the bottom of the table. Determine the initial speed of
asked by Anonymous 
geometry and combination
On a straight line ℓ, we have an infinite sequence of circles Γn, each with radius 1/2^n, such that Γn is externally tangential to the circles Γn−1,Γn+1 and the line ℓ. Consider another infinite sequence of circles Cn, each with radius rn, such
asked by infinite number of circles 
Calculas
Given f(x)=x^3−2x+5/x+4 and f′(3)=a/b, where a and b are coprime positive integers, what is the value of a+b? Details and assumptions f′(x) denotes the derivative of f(x).
asked by Derivative of f(x) 
Calculas
Evaluate lim x→0 10x/√(9+x)√(9x)
asked by Radical Limits! 
math
sonya spent three eighth of her money and then had $15 left. how much money did she originally have
asked by mike 
Trignometry
Let θ be the angle between the xaxis and the line connecting the origin O(0,0) and the point P(−3,−4), where 180∘
asked by Trigno with cordinates 
Trigonometric
What is the maximum integer value of n, where n
asked by Trigonometric Functions 
math
A score of 243 is a "basic" reading level. Scores for a random sample of 3000 students had a xbar = 250 with a standard error 1.0 The 99% confidence interval for the mean score all students in the city is 247.4 to 252.6. Ques: Is there good evidence that
asked by please help  urgent 
Maths A
Sue was sailing in the area shown on the chart on 3 March 2013. At 9:00 a.m., she sighted the antenna mast on Wellings Island on a bearing of 180°T. Sue also took a sighting to the lighthouse on Abby Island and found it was at an angle of 098°M. (i) Sue
asked by Bella 
maths
For the area shown on the attached chart, show/prove that the magnetic variation in 2013 would be 10°5’E.
asked by Anne