Questions Asked on
May 30, 2016

Math (Calculus)
Find the positive value of the parameter t corresponding to a point on the curve parametrized by {x= t^2 +3 ; y=t^2+t for which the tangent line passes through the origin. I tried with 2t+3 and 2t+1 but it isn't successful
asked by Anonymous 
Math (Polar to Cartesian Equations)
Convert the given polar equation to a Cartesian equation. r^2=4sec(theta)csc(theta)
asked by Giovanni 
physics
a car travels 4km in 3 minutes.find the speed of car in cms1
asked by karan deeo 
Math
A paper cone has a base diameter of 8cm and a height of 3cm(a) use Pythagoras theorem to calculate it's slant height (b)if the cone is cut and opened out into the sector of a circle what is the angel of the sector
asked by Joy 
physics
A scooter acquires a velocity of 30km/hr in 10 seconds just after the start.it takes 20 seconds to stop.calculate the acceleration in the two cases
asked by yash sharma 
algebra
In his physics class, Mario discovered the height, h, in feet of a bouncing basketball after b bounces is given by the formula: h = 12(2/3)b  what is the height of the ball after 3 bounces?
asked by Anonymous 
Psychological
Which of the following statements regarding the nature of stress is true? A. Accumulating hassles may well lead to a sudden onset of PTSD. B. Psychophysiological disorders are primarily mental disorders. C. Continued exposure to stress is associated with
asked by annie 
Math1
An explosives company specializes in bringing down old buildings. The time it takes for a particular piece of flying debris to fall to the ground can be modelled by the function h(t)= 12(t+2)^2 + 120(t+2), where h is the height of the debris in metres and
asked by Heaven 
algebra
a cheetah ran 300 feet in 2.92 seconds. What was the cheetahs average speed in miles per hour? Please show steps.THANKS!!
asked by anne 
language arts
Stage directions are one element of a drama. In a paragraph, define and provide an example of stage directions from A Surprising Point of View. Then analyze the stage directions. Explain how these directions contribute to your understanding of A Surprising
asked by kazHmiEr 
Math
Write each expression using a single exponent 1. x^9/x^2 a)x^11 b)x^7
asked by Annie 
Math
For questions 3 and 4, simplify each expression. 1. 4^4/4^6 16 16 1/16
asked by Annie 
Math2
A qulliq is an oil lamp that functions as the main source of light and heat for an igloo in the Inuit culture. It is made of soapstone shaped as a parabolic bowl that contains seal blubber for the oil. It is lined with Arctic wool for the wick. If the
asked by Heaven 
algebra
Write a compound inequality that the graph could represent. Please exlain and show if you can. Thank you...
asked by anne 
chemistry
What particle is needed to complete this equation 14/7N+ _______=14/7C+ 1/1H I think it is a beta particle because of beta decay and transmutation. I could be really off because this chapter is really confusing me.
asked by lulu 
Chemistry
Consider the compounds 4tertbutylcyclohexanol and 4tertbutylcyclohexanone. Using silica gel plates, which of the two compounds will have the higher Rf value when ethyl acetate is the developing solvent? Which will have the higher Rf value when
asked by Anon 
Math HELP!!!!!
sample of nine students is selected from among the students taking a particular exam. The nine students were asked how much time they had spent studying for the exam and the responses (in hours) were as follows: 18, 7, 10, 13, 12, 16, 5, 20, 21 Estimate
asked by angela 
Math
Lisa and Katie are playing a card game, and a total of 900 points has been scored. Lisa scored 400 more points than Katie. If you let l= l= the number of points that Lisa scored, and k= k= the number of points that Katie scored, then the problem can be
asked by Andy 
Math
Solve the equation e^x10=10. Do I have to change it to log form? What do I do after that?
asked by Cheezel 
Math help!
5. Replace the ___ with , or = to make a true statement. 7^4/7^2____ 49 < = none of the above multiply the following polynomials. 6. –2r(8r + 5) –16r^2 + 5
asked by Kate 
Physics
A garden hose has an inside diameter of 10 mm, and water ﬂows through it at 4.0 m/s. At what rate does water leave the nozzle?. Answer in m3/s
asked by Anonymous 
English
Check my answer? Is the Doll's house by Katherine Mansfield considered a modern short story or a traditional short story? I think it is considered a modern short story because it uses dramatic irony, and and is concerned with character development and
asked by Justine 
Chemistry Dr.Bob222
Using the Nernst equation, determine the diluted concentration for both cells. Show your work. Sn Sn2+(diluted)Cu2+Cu Zn Zn2+ Sn2+(diluted)Sn
asked by Anonymous 
physics
What is the strength of intermolecular forces in methylated spirit, acetone, water, glycerin and oil
asked by lerato 
Chemistry
Using benzene as an example to illustrate substitution reaction
asked by Anonymous 
math
A boy wants to chop a log of wood into 10pieces.he takes 10 minutrs to cut one piece.how much time will he take to chop all 10 pieces
asked by mitali 
cwi
The sum of the measures of the angles of any triangle is 180 degrees. In triangle ABC, the measure of angle A is 70° more than the measure of angle B. The measure of angle B is twice the measure of angle C. Find the measure of each angle.
asked by JJd 
Algebra
A taco stand sells tacos for $3.35 easch. The stands expenses for the day are $210. Define our variables and write an inequality to represent the amount of tacos they need to sell per day to make a profit, and then solve the inequality. Provide your
asked by anne 
History
which of these was a result of the punic wars? A. Rome lost Hispania to Carthage B. Rome's navy became higly advanced C. Rome developed trade relashonships with China D. Rome destroyed Cannae Ilphia Thank you soooooooo much for your time!
asked by Thanks for helping me! 
Chemistry Dr.Bob222
Which metal could you use to reduce Cr3+ ions but not Mn2+ ions? Which metal could you use to reduce ions but not ions? Zn Mg Ni Al
asked by Anonymous 
chem
a gas mixture is comprised of 32% oxygen and the rest is nitrogen. If the scuba tank is pressurized to a total pressure of 132 atm what are the partial pressures of the oxygen and nitrogen inside the tank? I'm having trouble understanding how to find
asked by Anna 
Math
At a point p 20m away from the foot of the tower, the angle of elevation of the point p is 45.calculate the height of the tower.
asked by Israel David enesi 
math
Skip is practicing tennis serves against a wall. The distance between Skip and the tennis ball, in feet, at any time T, measured in seconds, is D(T)=1.5T8+9. which analysis of the formula is true? A. Skip is 9 feet from the wall and the ball will
asked by stefan 
math plz help ;;
1. Solve the system by any method: 2x5y=1 2xy=1 How many solutions does the system of equations below have? Explain your answer. y=3/5x1 y=6/10x+3 plz help me ;; i don't understand how to do this, sorry ;;
asked by leo 
Chemistry
A 25.0g sample of sodium hydroxide is dissolved in 400.mL of water. What is the concentration of the solution?
asked by Mayra 
Math HELP!!!!!
A bag contains 4 red marbles, 3 blue marbles, and 7 green marbles. If a marble is randomly selected from the bag, what is the probability that it is blue? A. 2/11 B. 3/11 C. 5/14 D. 3/14 D
asked by angela 
Waste water treatment
In wastewater treatment, what is the required open screen area (m2) for reaching this screen velocity during treatment of the rain weather flow when dimension of the pretreatment unit for the wastewater treatment plant is receiving a dry weather flow
asked by Kent 
English
1. He moved to New York last year. 2. He moved into New York last year. 3. He moved in New York last year.  Is #3 not correct?
asked by rfvv 
Physics
Water ﬂows through a ﬁre hose of diameter 6.35 cm at a rate of 0.015 m3/s. The ﬁre hose ends in a nozzle of inner diameter 1.750 cm. At what speed does the water exit the nozzle?
asked by Anonymous 
chemistry
A) what is the molar fraction of each gas in a mixture of 6g of hydrogen H2 and 7g of nitrogen N2 ? B) what is the total pressurd exerted by the above mixture in a volume of 15 l at a temperature of 0ºc ? C) what is the partial pressure of each gas in the
asked by angy 
Algebra
A car and a bus leave at the same time from same location. The speed of the car is 7mph faster than twice the speed of the bus. After 2.5 hours they are 100 miles apart. Find the speed of each.
asked by James B 
chemistry
the ph of the resulting solution when 1.15g of sodium metal is reacted slowly in 500cm3 of water is close to
asked by durshetti balaji 
math
in circle p, chord cd is 12 inches long and measure of arc cd=90°, find the exact area of the segment bounded by chord cd and arc cd.
asked by kenzi 
Math
Lina is now 5 times as old as Bob, but 7 years from now, she will be 3 times as old as he will be then. How old is Lina now?
asked by Xtian Zhou 
Physics
A bus accelerates at 2.0m/s²[E]. A women inside the bus is walking at 2.0 m/s [E]. What is her velocity realtive to the ground at: a) 1s b)2s ? The answer provided don't seem right: a) 0.5 m/s[W] b) 3m/s[W]
asked by John Doe 
math
You deposit $400 in a savings account that earns 7% interest compounded annually. What is the function that represents your balance after t years?
asked by Katie 
U.S. History Question
True or false? Stokely Carmichael was the leader of the Student Nonviolent Coordinating Committee (SNCC). A: True
asked by Victoria 
Math
12 ounce can of Coke and 8 ounce carton of apple juice. She drank all of the Coke and only 1/2 of the apple juice. There are 30 ml in each ounce of liquid. How many ml did Mrs. Heath drink?
asked by Anonymous 
math, science etc
T=(pq/r)rq make q subject of formula
asked by muhammed Darboe 
Physics
At what speed does water escape from a large opentop tank through an opening 2.00 cm in diameter. The opening is 3.00 m below the water level of the tank on the side of the tank.
asked by Anonymous 
Math..help
Multiply: (3a(7/9))(3a(7/9))
asked by Duran 
Trigonometry
if cos=2/5, find the exact value of cos2x
asked by Aaeesha 
Physics
Water flows at a rate of 8.0 L/s through an opening at the bottom of a tank that has a diameter of 4.0 cm. How high is the water level of this open top tank?
asked by Anonymous 
Physics
At one end of the Venturi Tube the pressure and speed of flowing water is 21 kPa and 0.05m/s respectively. At another point the pressure is 5 kPa. Find the speed of the water at the second point. Answer in m/s
asked by Anonymous 
Algebra 1
A rectangular patio has a length of f(x)=4x3 and a width of g(x)=x4. If the patio's perimeter was 84 feet, what would the value of x be? Please explain!!
asked by Eighth Grader 
Math HELP!!!!!
A researcher wishes to estimate the mean amount of money spent per month on food by households in a certain neighborhood. She desires a margin of error of $30. Past studies suggest that a population standard deviation of $248 is reasonable. Estimate the
asked by angela 
Algebra 1
How do you solve 10x98=0?
asked by Eighth Grader 
Math  volume about y axis
Find the volume generated by revolving the region enclosed above by the xaxis and the graph of the function f(x) = x^2 1 about the yaxis. I cant make sense of it. What is it asking me to do? What are the integral bounds?
asked by Rob 
Maths
P, q, r are arranged sticks. P is 10km north of q. The bearing of r from p is 223, and the bearing of q from r is 097. Find the distance of r from p. Show full working both the bearing resulting diagram and the formular
asked by Nwafor 
math
From an external point E, tangents ES and ET are drawn to circle O. if m
asked by kenzi 
Math
P, Q, R, are arranged sticks. P is 10km north of Q. The bearing of R from P is 223, and the bearing of Q from R is 097 find the distance of R from P
asked by Anonymous 
Math Calculus I
let f(x)= 6sin(x)/(2sin(x)+6cos(x)) The equation of the tangent line to y= f(x) at a= pi/6 can be written in tthe form y=mx+b where m=? b=? I found the f': (9*(cos^2(x)+sin^2(x)))/(3cos(x)+sin(x))^2 but i don't know how to fill it into the form. Can anyone
asked by Anonymous 
Chemistry
Define indicators giving four examples and their PH ranges
asked by Anonymous 
Algebra
Miachel wants to double the area of his garden show below by increasing the length and width by the same amount. what will be the dimensions of his garden then? use a representation and equation to solve
asked by Jason 
Chemistry
Write on the physical properties of benzene
asked by Anonymous 
math

Chemistry
Write short note on sigma bond and pi bond
asked by Anonymous 
Math
Hi, I have been trying to figure this one math problem for awhile and I am stuck. I believe the answer is between A or B. Skip is practicing tennis serves against a wall. The distance between Skip and the tennis ball, in feet, at any time T, measured in
asked by Ann Mori 
math
for a triangular prism, the areas of the lateral faces are 18in^2, 26in^2 and 34in^2. if the area of the base is 16in^2, find the total area of the prism.
asked by kenzi 
Statistics
Suppose a fair coin is tossed five times and let x be the number that turned up in those five times. **the mean and the standard deviation are respectively... a.) 0.5, 0.5 b.) 2.5, 0.5 c.) 2.5, 2.24 d.) 2.5, 1.12 **find P(x≥1) a.) 0.5 b.) 1.0 c.) 0.03
asked by Caitlyn 
Math
1. Identify the following functions as linear or nonlinear: xy = 9 y = 3x x + 7 = y y = x  4 y = x^2 x + y  20 = 2x 1/2x = y y = 5/x y = 30  x^2 thank you
asked by I NEED HELP MS SUE 
algebra 1
NEED HELP!!Hi, I have been trying to figure this one math problem for awhile and I am stuck. I believe the answer is between A or B. Skip is practicing tennis serves against a wall. The distance between Skip and the tennis ball, in feet, at any time T,
asked by david 
Algebra
the product of two consective odd integers is sixtythree. find all such number.
asked by liliy 
Algebra
If eleven is add to the square of a number, the result is sixty. Find all such numbers.
asked by liliy 
Math (precelc 12)
Write the expression as a single logarithm: 3log(a)log(b)(1/2)log(c) I want to check my answer. I got log(a^3/bc^(1/2))
asked by Jana 
Maths
Two house A and B are 100m apart and B is due east of A. The bearing of a church c from A is 145 and from B is 225, which house is nearer to the church and by how much
asked by Anonymous 
Civics Presentation (Writeacher)
Will someone help me construct a layout for this project? It's due Thursday. On your power point, you should develop a presentation that identifies the party, tells us meaningful information about the party platform, and tries to convince us not only to
asked by Victoria 
English
1. You should not miss breakfast. 2. You should not skip breakfast.  Are both the same? What is the diffference? 3. Stand in a row. 4. Stand in row. 5. stand in rows. 6. stand in two rows. (Can we use the expressions
asked by rfvv 
math
The road from the town of Wolford to the village of Abbotshead is measured as 5.8 cm on a map. If the scale of the map is 1:50 000, calculate the real distance between the 2 places in km
asked by Nikki 
Math
you accept a job with a salary of $35000 for the first year. suppose during the next 39 years you get a 5% raise each year. What is your total compensation if you work for a total of 40 years?
asked by Ginger 
Math
Many has two boxes one contains 10 colored pencils 4 of witch are red and 6 which are green the other box onther box contains 7 markers and which 4 are red and 3 are blue what's the probability of of many choosing green green pencil and red marker
asked by Frank 
Algebra 1
An airplane travels for seven hours with a 60 mph tailwind on the return trip against the same wind it took the plane nine hours find the speed of the plane with no wind.
asked by Jack 
Math
1. If you roll a number 52 times; how many times can you expect to roll a number 4? I do not understand Probability and a GEM test is coming up Thursday Please Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!
asked by Sam 
physics
A horizontal pipe (Venturi Tube) 10.0 cm in diameter has a smooth reduction to a pipe 5.00 cm in diameter. If the pressure of the water in the larger pipe is 2.0 x 105 Pa and the pressure in the smaller pipe is 5.0 x 104 Pa, at what rate does water flow
asked by Anonymous 
maths
Two boat A and B left a port at the same time on different route. B traveled on the bearing of 150 degree and A traveled on the north side of B when had traveled 8 kilometer and B had traveled 10 kilometer. The distance between the two boat was found to be
asked by kehinde 
math
Hi, I have been trying to figure this one math problem for awhile and I am stuck. I believe the answer is between A or B. Skip is practicing tennis serves against a wall. The distance between Skip and the tennis ball, in feet, at any time T, measured in
asked by Julia 
Math
There were 240 children in a school.60%of them were girls. How many girls were in the school
asked by Doireann 
Math
Kim throws her basketball up from the ground toward the basketball hoop from a distance of 20 feet away from the hoop. The ball follows a parabolic path and returns back to the gym floor 5 feet from the hoop. Write one possible equation to represent the
asked by Harpreet 
science
If all the nematocysts on a mature manofwar were filled with poison, what is the total amount of poison (in milligrams) that they would contain? 1. less than one milligram 2. two milligrams 3. five milligrams 4. six milligrams 5. more than eight
asked by miss 
algebra
Abigail buys a dress for $12 & a backpack for $10.50. She is also charged 9% sales tax on the dress only. Write an expression that represents total cost abigail had to pay
asked by ernie 
English
Hello. I'll be very grateful for some language help. Do you think it's correct to say: 1) "They negotiated about creating a coaltion." 2) "They expressed concern about increasing crimes." Thank you very much.
asked by Ilma 
Math
Where are the brackets supposed to be in this equatin 208÷2+6 to give 1. 5 as the answer.
asked by Hailey 
Math and science
How far apart are these two buildings?
asked by Lebo 
Civics Presentation (Writeacher)
What do you think about my first two slides? SLIDE #1: WHAT IS THE LIBERTARIAN PARTY? The Libertarian Party is the only political organization which treats and respects you as an unique individual. As the Libertarian Party, we believe in liberty,
asked by Victoria 
Geometry
maria is building a carrying case for a musical instrument. The case will have the shape of a triangular prism. She wants to know how much material will be needed to build it. The case will have the dimensions given in the diagram. What is the surface area
asked by Bobby 
maths
A bell rings every 10 minutes and a buzzer sounds every 15 minutes they were both heard at 2nd clock When would they both be heard next?
asked by patricia 
English
Dear Ms.Sue, thank you for your answer. Will you please help me with one more question? Do you think it's possible to use such phrases as "for a long time / for a month" in the midposition, for example: "They have been trying for a week to find a solution
asked by Ilma 
Physics
A brass rod is two meter long at a certain temperature the brass rod is 2m long what is it length to a temperature raise of look if alpha of brass is 19*106 kelvin
asked by Patience 
mathss
a, b, c, d, e, f, and h are numbers such that a × b × c = 100, a × d × e = 0 and b × f × h = 0. Which of the following could be true?
asked by mike 
math
the length of a rectangular garden is 4m more than its width determine the gardens width if the area is 117m^2
asked by jay 
Algebra
Identify the domain and range of the relation {(9,2), (4,2), (3,2), (9,2)} thanks for your help. please show answer.
asked by anne 
preparation
a ball of mass .1kg initially at rest is dropped from height of 1 meter.ball hits the ground and bounces off the ground.upon impact with the ground its velocity reduces by 20%.the height to which the ball will rise is?
asked by rajan 
Algebra
The function g(t) = 2t represents the number of guitar lessons, g(t), you can compete in t months. How many guitar lessons can you complete in 7 months? Provide your conclusion as a complete sentence. thanks for help
asked by Denise 
Maths
Given that sin theta=5/7 and theta is acute. Find without using the table value of cos theta
asked by Destiny khadija 
English
Dear Ms.Sue, I am very grateful for your explanation. Please have a look at one more sentence. "They had been trying for more than ten years to conceive a baby naturally but finally had to resort to in vitro fertilization". Is the word order OK? Do you
asked by Ilma 
Math
The football team is on the 30yd line and has 4 plays to make a rst down. To make a rst down, the team must advance the ball 10 yd. On the rst play, they lost 4 yd. On the second play, they gained 8 yd. On the third play, they lost 2 yd. How many more
asked by Carey 
maths
average third number is 12 if two number are 8 and 15 then the third number is?
asked by Anonymous 
Maths
If the exterior angle of a quadilateral are given is 60 degree, 130 degree, 82 degree. Find the interior angle
asked by Destiny 
maths
average of three number is 12 if two number are 8 and 15 then the third number is ?
asked by ammu 
Math(PleaseHelpAssignmentDueToday)
Determine the y intercept of the graph of y=5x^2 + 7x+ 11
asked by Heaven 
Math2(PleaseHelpAssignmentDueToday)
The graph of a parabola passes through the points (3,8) and 5,8. The equation if the axis of symmetry of the graph of the quadratic function is: X=8 X=4 x=0 X=4
asked by Heaven 
Civics Presentation (Help!)
Will someone help me construct a layout for this project? It's due Thursday. On your power point, you should develop a presentation that identifies the party, tells us meaningful information about the party platform, and tries to convince us not only to
asked by Victoria 
music
Meaning of Guzheng in music it's Chinese or Japanese we have been studying it so meaning of Guzheng thank u
asked by sofka 
history
In the context of criminal punishment, desert refers to:
asked by ron 
Biology
If a man has cystic fibrosis and his wife is a carrier of the gene, what is the likehood of their offspring having the disease ? Use a punnet square to justify your answer
asked by Hafsah 
math
(25)^1/3 Ã— 3âˆš16
asked by Anonymous 
English
1. He is absorbed in biology. 2. He is very interested in biology. 3. He is into biology.  Are they all the same in meaning?
asked by rfvv 
English
1. She sat taking notes "on" everything that was said. 2. She sat taking notes "of" everything that was said.  Which one is right? Can we use both 'on' and 'of'? which one is commonly used?
asked by rfvv 
math plz help ;;
Solve the following equation: 2(x3)+4=8x20 please help me how to do this step by step plz i do understand how to do this, sorry ;; And thank you for the ones the helped me with the other Q :D
asked by leo 
English
1. I was upset with what he said. 2. I was upset about what he said. 3. I was angry with what he said. 4. I was angry about what he said. 5. I was angry at what he said.  Are they all grammatical? Which prepositions do we have to use? Is
asked by rfvv 
Algebra
Test scores of average 7th grade class are: 77,83,92,66,89,74,98,79,85,75,80,88,76,96,84,100,71,93,70,82 The mean is 82.9 and the standard deviaition is 9.7 1. What score is in the 80th percentile? 2. Your teacher tells you that your score beat 78% of the
asked by Ulia 
U.S. History Question
Was Malcolm X the symbol of the black power movement and a supporter of the Nation of Islam?
asked by Victoria 
Stats
A class consists of 50 women and 82 men. If a student is randomly selected, what is the probability that the student is a woman? A. 32/132 B. 27/66 C. 50/132 D. 82/132 B
asked by angela 
Chemistry!!! PLZ PLZ HELP!!
Calculate the equilibrium amounts of each susbtance in the reaction below if an initial amount of 0.1 moles of H2 are brought together with an initial amount of 0.2 moles of I2 and then equilibrium is established at 900K. Kc at this temperature=70. H2 + I2
asked by Sabrina