Questions Asked on
September 11, 2015

  1. chemistry

    Given that a 0.160 M HCl(aq) solution costs $39.95 for 500 mL , and that KCl costs $10/ton, which analysis procedure is more cost-effective?

    asked by madie
  2. Chemistry

    An empty gas cylinder of 40L is to be filled with air (ideal gas) to 5000psia and 25C. The gas cylinder is being filled by a pump that increases its flow by 20 moles per minutes after turned on. How long will it take the pump to fill the tank? My work:

    asked by Peb015
  3. geometry

    In a triangle, if 3angleD=4angleS=6angleR, Calculate the measures of angle D, angle S and angle R.

    asked by abhishek
  4. math

    Li is running a race around the school track. He runs 0.327 kilometer during the first half of the race. What is the distance that he travels in the first half of the race, rounded to the nearest hundredths

    asked by John scott
  5. Physics

    A treasure map instructs you to walk 27 m south, followed by 70 m east, then 64.5 m north, and finally 28.5 m east. Determine the magnitude of your total displacement, if you follow these instructions. Calculate the answer in meters (m) and rounded to

    asked by Anonymous
  6. Math

    Solve this radical equation algebraically: 2x-5(sqrtx)-3=0

    asked by Bob
  7. Math

    14 2 7 3 9=10 insert symbols to make it work 9*2 11 8 4 1=60

    asked by Lina
  8. Physics

    During an all-night cram session, a student heats up a 0.360 liter (0.360 x 10- 3 m3) glass (Pyrex) beaker of cold coffee. Initially, the temperature is 18.1 °C, and the beaker is filled to the brim. A short time later when the student returns, the

    asked by can anyone help me with this
  9. Ranoto

    Assess the extent to which bad road use has a direct impact on the physical,emotional,social and economic aspects to family,the community and the country

    asked by Phuti
  10. calculus

    hey guys, quick question (-8 +- sqrt -20)/-6 what does this equal

    asked by Karlie
  11. math

    Li is running a race around the school track. He runs 0.327 kilometer during the first half of the race. What is the distance that he travels in the first half of the race, rounded to the nearest hundredths

    asked by John scott
  12. ENN103F

    Describe two improvement that the people of lkror have enjoyed from the state assembly and what are the two aspects that still need improvement?

    asked by Lawrence
  13. Gemometry

    < = ANGLE SIGN

    asked by PLEASE HELP ASAP
  14. Social studies

    Which is the most likely reason why Spain controlled so much of the Americas in the 1400s and 1500s? (1 point) A.The Vikings did not stay very long in North America. B.Other Europeans wanted to know about Ancient Rome. C.Many explorers were more interested

    asked by HELP NEED PLZPLZ
  15. geometry

    The endpoints of are A(2, 2) and B(3, 8). is dilated by a scale factor of 3.5 with the origin as the center of dilation to give image . What are the slope (m) and length of ? Use the distance formula to help you decide: .

    asked by william
  16. Biology

    how does the number of electrons in an atom determine what kind of bond it can form?

    asked by dylan
  17. fitness

    4. Which of the following behaviors might help you maintain good emotional and mental health? (2 points) keeping a journal of your accomplishments and interests keeping to yourself and not socializing with new people maintaining friendships with people who

    asked by Jeweleah
  18. Social studies

    12. Why did the English not try to settle North America earlier than the late 1500s? (1 point) A.They were not as strong as their European neighbors. B.They were isolationists who preferred to keep to themselves. C.They did not believe there was anything

    asked by help plzplzplz
  19. Trigonometry

    a boat travels on a course of bearing n 37 10' W for 79.5 miles. How many miles north and how many miles west has the boat traveled?

    asked by Mark
  20. math

    The number of digits used to write all the page in a book is 35. How many pages has the book?

    asked by John
  21. Math

    How many digits are needed to write down all from 1-100?

    asked by John
  22. Math

    Romain,fabien,lise,jen and adrien stand in a single row.romain is after lise.fabien is before romain and just after jennifer.jennifer is before lise but she is not d first.where iS adrien?

    asked by John
  23. physics

    Two springs have force constant K1&K2 (K1>K2) .each spring is extended by same farce F. If their elastic potential energy are E1&E2then E1/E2)is?

    asked by Bn sharma
  24. physics

    a man can swim in still water At 5 km/h . in order to cross the river through shortest path , at what approximate angle he should swim at, with the upstrem ?

    asked by Akansha
  25. Vezilwazi secondary school

    I'm in grade10 and I'm doing Life Science,Maths.L,Business and Tourism........I want to be a Nurse it is Possible for meh to be that???? Help! My Number 0714410106

    asked by Busie Bhuda
  26. Health

    Which of the following secondary sex characteristics do not develop during the teen years? (1 point) development of breasts in girls development of body hair in boys development of ovaries in girls and testes in boys development of acne in boys 2. What is

    asked by Help(aSAP)plz
  27. math

    Product A is a 12-ounce bottle of generic popcorn oil that sells for $1.39. Product B is a 24-ounce popcorn oil bottle that costs $2.79. Which is the better buy?

    asked by amanda
  28. Math Help!

    You have $60.00 in your wallet and want to buy some new CDs. If the CDs are $11.00 each, what number of CDs, x, can you buy? Write and solve an inequality. Then explain your answer

    asked by Amber
  29. math

    an electric pole is 24 meter high casts a shadow of 20 meter long.find the height of the tree if it castes a shadow of 15 meter long under similar conditions

    asked by yashlion
  30. Math

    Denise took a total of 80 calls on her shift at work today. Of those 80 calls, 55% were resolved, 15% escalated to a supervisor, and 10% required that a technician be sent out to the customer's house. What is the total number of calls that Denise resolved

    asked by shirell
  31. math

    an electric pole is 24 meter high casts a shadow of 20 meter long.find the height of the tree if it castes a shadow of 15 meter long under similar conditions. [explain and make the table if direct or inverse variation]

    asked by yashlion
  32. math Help

    Multiplying and Dividing Fractions Carol is baking cookies and needs two and one-fourthcups of flour, two-thirdscup of white sugar, one-fourthcup of brown sugar, andone -sixteenth cup of baking soda. Use this information to answer the following questions.

    asked by gavin
  33. English

    Which of the following is a primary source from early American and colonial literature? A. "Religion in the Colonies" Discovery Education streaming movie B. An essay about Olaudah Equiano C. "Sinners in the Hands of an Angry God" by Jonathan Edwards ******

    asked by Cassie
  34. English

    Read the following example. What is the effect of the meter in these lines? I wandered lonely as a Cloud That floats on high o'er vales and Hills. When all at once I saw a crowd, A host, of golden Daffodils; Beside the Lake, beneath the trees, Fluttering

    asked by Cassie
  35. calculus ab

    Use a graphing utility to graph the function and visually estimate the linits h(x)= -x^2 + 4x

    asked by chris
  36. math

    3-xsquare

    asked by omendra
  37. math

    3-xsquare

    asked by omendra
  38. math

    Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =

    asked by jake
  39. Health

    Which of the following secondary sex characteristics do not develop during the teen years? (1 point) development of breasts in girls development of body hair in boys development of ovaries in girls and testes in boys development of acne in boys 2. What is

    asked by Help(aSAP)plz
  40. history

    1. Africa's Rain forests are located on either side of the what A. Equator B. Coastal C. Sahara D. Deserts 2. Much of the area north and south of Africas rainforest is _____ a rolling grassland A. Tundra B. Desert C. Savanna D. Semi-arid i think 1. is a

    asked by jake
  41. math

    Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =

    asked by jake
  42. Physics

    An object travels with a constant acceleration for 10 s. The vectors in Figure 3-41 represent the final and initial velocities. carefully graph the x component of the velocity versus time and the y component of the acceleration versus time, in a Vx vs t

    asked by Alyssa
  43. Physics. Help Please

    Gabriele enters an east-w straight bike path at the 3.0-km mark and rides w at a constant speed of 8.0 m/s. At the same time, Xena rides east from the1.0-km mark at a constant speed of 6.0 m/s. 1. Write function x(t) that describe the position of Gabriele

    asked by Matt
  44. maths

    Two places on the same meridian have latitudes 10 degree south and 53 degree north. What is their distance apart measured along the meridian?(radius of the earth R=6400km,pi=22/7)

    asked by precious
  45. science

    To answer these questions you will need to refer to the volume of water dripping over time graph that you created in your science notebook from interactive art plotting a line graph activity. 1. According to the trend shown by the graph what volume of

    asked by jake
  46. Physics

    An object travels with a constant acceleration for 10 s. The vectors in Figure 3-41 represent the final and initial velocities. carefully graph the x component of the velocity versus time, the y component of the velocity versus time and the y component of

    asked by Alyssa
  47. Physics

    A pilot flying low and slow drops a weight; it takes 2.8 s to hit the ground, during which it travels a horizontal distance of 100 m . Now the pilot does a run at the same height but twice the speed. How much time does it take the weight to hit the ground?

    asked by Lina
  48. Pre Algebra

    I have a rectangle that represents one whole. There are three sections that equal 1/3 each. I want to subdivide those sections into even & uneven squares. EX: 1/3 divided by 2 = 1/6 I am having trouble identifying the uneven squares. Could you please show

    asked by Kyle
  49. Math

    In your own words like the rules for multiply in your own words like the rules for multiplying integers then write the rules for dividing integers

    asked by Anonymous
  50. Math

    The displacement from equilibrium of an oscillating weight suspended by a spring is given by y(t) = 2 cos 6t, where y is the displacement in centimeters and t is the time in seconds. Find the displacement when t = 1.45, and round your answer to four

    asked by Anonymous
  51. Africa Regional Overview

    Which of the following prominent geographic features is located in eastern Africa? A)Sahara Desert B)Kalahari Desert C)Congo D)Great Rift Valley

    asked by Anonymous
  52. science

    1. According to the trend shown by the graph what volume of water would you expect after 35 seconds of dripping A. Approximately 10mL B. Approximately 12 mL C. Approximately 20 mL D. Approximately 25 mL 2. What is the relationship between the volume of

    asked by lizbeth
  53. math

    Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =

    asked by lizbeth
  54. math

    Find the greatest number of three digits that can be exactly divided by 75,45 and 60

    asked by Ravi
  55. Social Studies

    Hernando de Soto's mission accomplished its original objectives. True or False? I think true? Not sure?

    asked by Amber
  56. math

    Is one centiliter greater than one kiloliter?

    asked by Fayth
  57. biology

    An individual who is heterozygous for Eye color would be? A.two alleles for brown eyes. B. One allele for brown eyes and one blue eyes. C.two alleles for blue eyes.d.blue eyes I am think b.

    asked by woody
  58. kwasa secondary school (subject Life orientation)

    illustrate three ways on how this issue can impact negatively to the health of the community or school

    asked by Thwala Philile
  59. eced

    Dr.tutus used a twin study to determine the influence of heredity on emotionality.if emotional ality is influenced by heredity, he will found the level of emotional is more similar in? Siblings pairs then in identical twins. B.fraternal twins than in

    asked by woody
  60. Social Sudies please help

    which of these people is in the labor force 15 year old high school student who wants a job a 32 year old mother who stopped working a 46 year old woman who is unemployed but seeking a job a 68 year old man who is retired ---------

    asked by School
  61. algebra 2

    How can you model data with a linear function? can i have example to please

    asked by cj
  62. Algebra

    A whole number is added to a number with two didgets after the decimal point. To make sure the answer is reasonable, how many didgets should the sum have after the decimal point ? A - none B - 1 C- 2 D- infinitely many

    asked by Tay
  63. Homework

    An example of nickel picking is ? A.parents enrolling their active child in many structured ,sedentary,activites,hopes that he will calm down. B.parents enrolling their active child in many athletic activities in hopes that he will burn off some stream .

    asked by Woody
  64. Calculus

    solve for x: 6x=ex+1

    asked by Anonymous
  65. English

    In "My Brother's Keeper," Ted and Jamie are developed in contrast to one another by describing their fears of the unknown.******* emotional reactions. interactions with their parents. distrust of one another.

    asked by Patty
  66. Chemistry

    To what decimal place should each answer be rounded? and how many significant figures does the rounded answer have? a) 9cm + 2.8 cm= 11.8cm (unrounded) b) 0.135 atm + 0.6 atm= 0.735 atm (unrounded) PLEASE HELP

    asked by Albert
  67. Math

    Find a negative and a positive coterminal angle for Ө = 2pi/3. -4pi/3 and 8pi/3

    asked by Anonymous
  68. chemistry

    how many kilojoules of energy are required to bring 800.0g water from 20.0c to the boiling point. not sure what formula is? 4.184j

    asked by melissa
  69. eced

    Which situation will lead to the largest heritability coefficient for reading disability? A.well educated providing stimulating that fosters children's reading ability. B.less educated providing academically stimulating that fosters children reading

    asked by woody
  70. Physical Science,Maths, L.O,Life Science

    What Subject do i need to study at FET Level if i want to become a Social Worker one day

    asked by Inathi Melaphi
  71. CALCULUS

    20.) How do I find the zeros of the function algebraically? ex1) f(x)= x^3 -4x^2 -9x +36 ex3) f(x)= 3 +(5/x) ex7) f(x) = (2x^2-9)/ (3-x)

    asked by SARA
  72. algebra

    is f(x)=5+√2-x an increasing or decreasing function?

    asked by a
  73. algebra

    Lauren wants to purchase custom-made bumper stickers to advertise her business. Two websites offer different deals: Website A: Pay a fee of $80.00, plus $0.35 per bumper sticker or Website B: Pay a fee of $49.25, plus $0.50 per bumper sticker Website B is

    asked by john
  74. science

    If air at seal level with a temperature of 27C is forced up a mountain slope and the air's dew point at the condensation level is 14C at what elevation will condensation begin?

    asked by kayleigh
  75. accounting

    Event: One stockholder reported to the company that 330 shares of his East Hill stock had been sold and transferred to another stockholder for $3,700 cash. what effects does this event have on the balance sheet of a company? How do I input this in the

    asked by linda
  76. physics

    A mountaintop is a height y above the level ground. A woman measures the angle of elevation of the mountaintop to be θ when she is a horizontal distance x from the mountaintop. After walking a distance d closer to the mountain, she measures the angle of

    asked by jasleen
  77. physics

    A swimmer, capable of swimming at a speed of 1.18 m/s in still water (i.e., the swimmer can swim with a speed of 1.18 m/s relative to the water), starts to swim directly across a 2.16-km-wide river. However, the current is 1.19 m/s, and it carries the

    asked by amanda
  78. physics

    A rocket is fired at a speed of 66.0 m/s from ground level, at an angle of 63.0 ° above the horizontal. The rocket is fired toward an 31.2-m high wall, which is located 28.0 m away. The rocket attains its launch speed in a negligibly short period of time,

    asked by amanda
  79. physics

    You are traveling in a convertible with the top down. The car is moving at a constant velocity of 17.5 m/s, due east along flat ground. You throw a tomato straight upward at a speed of 13.0 m/s. How far has the car moved when you get a chance to catch the

    asked by ar
  80. Physics

    Two passenger trains are passing each other on adjacent tracks. Train A is moving east with a speed of 35.5 m/s, and train B is traveling west with a speed of 33.4 m/s. (a) What is the velocity (taking due east to be the positive direction) of train A as

    asked by JJ
  81. physics

    One cubic centimetre (1.0 cm3) of water has a mass of 1.0 × 10−3 kg. (a) Determine the mass of 1.0 litre of water. Assuming that biological substances are 98% water, estimate the masses of (b) a cell with a diameter of 1.0 μm, (c) a human kidney, and

    asked by Jas
  82. physics

    Two planes are initially separated by a horizontal distance of 350 km. Plane A is positioned 350 km west of the Plane B. Plane A is initially traveling at a velocity of 60 m/s east. Plane B is traveling at a velocity of 45 m/s west. If plane A begins to

    asked by Vj
  83. english help please!!

    n no fewer than three sentences, critique the following paragraph. Explain where it could be improved. Then, in your own words, rewrite the paragraph to make its writing stronger. Make sure you include a hook, supporting evidence, and a topic sentence. Use

    asked by Oscar
  84. Math

    A rope is 60 in. in length and must be cut into two pieces. If one piece must be five times as long as the other, find the length of each piece. Is one part of the rope 5in?

    asked by Lauren
  85. CALCULUS

    How do I determine whether the function is even, odd, or neither. How do I describe the symmetry? ex 1) f(t)= t&2 +2t -3

    asked by SARA
  86. Biology

    My mom has eye color hazel and my dad has the eye blue and my eye color is blue. Would my Genotype be homozgous? My mom hair has blonde and my dad has blonde hair and I have blonde hair would my genotype be heterozgyous?

    asked by M
  87. probability

    You and your friend just rented a car for an 8,000 mile cross-country road trip. Your rental car may be one of three different types: new (N), nearly one year old (O), and old (L). If the car you receive is brand new, it will break down with probability

    asked by matt
  88. math

    Diane Van Os decided to buy a new car since her credit union was offering such low interest rates. She borrowed $32,000 at 3.5% on December 26, 2012, and paid it off February 21, 2014. How much did she pay in interest?(Assume ordinary interest.)

    asked by Evelyn
  89. Physics

    An object is placed 11.3 cm to the left of a diverging lens of focal length -6.51 cm. A converging lens of focal length 11.6 cm is placed a distance of d to the right of the diverging lens. Find the distance d that places the final image at infinity.

    asked by Rachel
  90. ENN 103F

    Describe two improvement that the people of ikror have enjoyed from the state assembly and mention two aspects that still need improvement

    asked by lunkha
  91. Physics

    A very narrow beam of white light is incident at 56.10° onto the top surface of a rectangular block of flint glass 12.7 cm thick. The indices of refraction of the glass for red and violet light are 1.640 and 1.663, respectively. Calculate the dispersion

    asked by Rachel
  92. math

    259.689 the 9 in the ones place _____ the value of 9 in the thousandths place

    asked by terrell
  93. ap calculus

    ((1/-2-h)-1)/h

    asked by alex
  94. english

    the author of my brothers keeper mainly develop jamies character through who

    asked by ciara
  95. Physics

    A rocket-powered hockey puck moves on a horizontal frictionless table. The figure below shows the graphs of vx and vy, the x- and y-components of the puck’s velocity. The puck starts at the origin. The graph of the X-velocity is v=8t cm/s and the

    asked by Eric
  96. Physics-VECTORS

    Find the vector's magnitude and direction. Part A A⃗ = 4 i^− 8 j^ A =? θA =?

    asked by Eric
  97. Physics

    The components of vector A⃗ are Ax = + 3.90 and Ay = -4.00. What is the angle measured counterclockwise from the +x-axis to vector A⃗ ?

    asked by Eric
  98. Physics

    Three forces are exerted on an object placed on a tilted floor. Forces are vectors. The three forces are directed as shown in the figure. If the forces have magnitudes F1 = 2.0 N, F2 = 17.0 N and F3 = 15.0 N, where N is the standard unit of force, what is

    asked by Eric
  99. Physics-Trajectory

    A particle's trajectory is described by x =(12t3−2t2)m and y =(12t2−2t)m, where t is in s. What is the particle's speed at t=0s ? What is the particle's speed at t=5.0s ? Express your answer using two significant figures. What is the particle's

    asked by Eric
  100. microsoft power point

    10. You're creating a table for one of your slides, and need to make some modifications to your table structure. Which of the following options can you perform by right-clicking inside the table? A. Merge cells B. Invoke Excel spreadsheet C. Create

    asked by Lisa
  101. math

    maggie has a 27 feet long ribbon what's the length of the ribbon in yards

    asked by Janice
  102. physics

    When a car moves up an incline, does the kinetic energy and potential energy decrease or increase?

    asked by Sandy
  103. english

    the author of my brothers keeper mainly develops jamies character through A. his actions b.dialogue and thoughts c.the narrators description d.others reaction to him

    asked by ciara
  104. Physics

    Two soccer players, Mary and Jane, begin running from nearly the same point at the same time. Mary runs in an easterly direction at 3.61 m/s, while Jane takes off in a direction 63.3o north of east at 5.44 m/s. How long is it before they are 23.6 m

    asked by Martina
  105. maths

    find the value of 81 (1/ log base5 rash to 3 +27 log base 9 rash to 36 +3 ( 4/log base 9 rash to 9

    asked by Riddhi
  106. Biology

    My mom has eye color hazel and my dad has the eye blue and my eye color is blue. Would my Genotype be homozgous? My mom hair has blonde and my dad has blonde hair and I have blonde hair would my genotype be heterozgyous? Biology - woody, Friday, Se

    asked by M
  107. science

    what are hydrocarbons?

    asked by Prashant
  108. Math

    Write each number is scientific notation. 291.7 0.0960 is it 2.917 x 10^ 3 and 9.60 x 10^-2? help!! thanks!!

    asked by Susan
  109. music and movement

    What type of music should be played if a student's speed needs to be increased

    asked by elisha
  110. chem

    If you have a properly adjusted hot flame, which is pale blue with three distinct cones, what is observed if the gas control valve is slightly closed? Explain.

    asked by anna
  111. physics

    A 4000 kg trailer is towed up a hill with a 5% grade. If the towing truck starts from rest at the bottom of the hill and reaches a speed of 12 m/s at the top of the hill, how much is the towing force. The road from the bottom to the top of the hill is

    asked by james
  112. Algebra

    If Angela runs up 5 steps of the escalator, then it takes her 40 seconds to reach the top of the escalator. If she runs up 14 steps of the escalator, then it takes her only 26 seconds to reach the top.

    asked by Danny
  113. chemistry

    Hi! Can you please check if my answers are correct? And, can you please tell me any other details you think are important to add. Also, the last two questions i have no clue how to answer. can you help? thanks so much! 3.A burning candle produces a

    asked by anna
  114. Chemistry

    If an aquarium tank holds 100 litres of water, calculate how much heat energy would be required to heat the tank from 18.2 Degrees(C) to 32 Degrees(C)

    asked by Samuel