Questions Asked on
September 9, 2015

  1. Mmanotshe moduane high school

    History,Maths Literacy,Geography &Life Science

    asked by Silence
  2. algebra

    are -0.4 and -0.4... between -0.4 and -0.3... ?

    asked by kiki
  3. chemistry

    Calculate the freezing point of 0.5 g of biphenyl in 20.0 mL of cyclohexane. Cyclohexane Fp = 6.5 degrees C Kf 20.01

    asked by Brit
  4. algebra

    Maria shares a house with 4 others. She pays $500 rent per month plus her utilities. If the utilities cost a total of x dollars, how much more money,M, does maria owe Write an equation for how much maria owes.

    asked by J
  5. Algebra

    The water in a pond is 8 feet deep but the water level is dropping a rate of 1/2 inch per week. Write a equation for the depth in inches,d, of the pond after w weeks...

    asked by Confuse
  6. math

    what is the order of these numbers from least to greatest -7/5 -1 5/11 -1.45 -1 91/200

    asked by lily pad
  7. Math

    A chemist wants to create a solution that is 24% acid. How many liters of a 40% acid solution must be added to 50 liters of an 18% acid solution to obtain this 24% acid mixture?

    asked by Zack
  8. Math

    A chemist wants to create a solution that is 24% acid. How many liters of 40% acid solution must be added to 50 liters of an 18% acid solution to obtain this 24% acid mixture? Please help thank you

    asked by Lauren
  9. physics

    A cannon is mounted on a tower above a wide, level field. The barrel of the cannon is 20 m above the ground below. A cannonball is fired horizontally with an initial speed of 900 m/s. Assuming air resistance can be neglected, approximately how long will

    asked by jordan
  10. statistics

    I have this question which is stumping me and my lecture is little help. For part we have to find the standard error and I have that, well I think I do, and part b and c depend on us getting part a right. Can someone please help me out. The sign on the

    asked by Luci
  11. Nutrition

    Write equations to show how 2-methyl-1-pentene could be converted to 2-hydroxy-2-methylpentane 1-hydroxy-2-methylpentane

    asked by Kate
  12. math

    The sum of ages of Seth and charles is 100. if Charles is twice as old as Seth was when charles was seths age, find their ages

    asked by pierce
  13. business mathematics

    a prominent local politician for lusaka central constituency,and as his campaign manager, you need to decide how to promote the candidate. there are three ways you can you can do so: you can send glossy, full-color flyers to registered voters of the

    asked by Gibbons
  14. math

    Find f(5) when f(x)= x2+7 ______ x3+5x

    asked by tia
  15. Geometry

    AC=5x-8 and CD=16-3x

    asked by Anonymous
  16. chemistry

    Determine the volume of 200.00g of carbon tetrachloride, for which specific gravity =1.60

    asked by ram
  17. Math word problem

    Danika has yellow 10 buttons.She has 6 times as many black buttons. How many buttons does she have?

    asked by Lovely
  18. maths

    A ladder 6m long is placed against a vertical wall,its lower end is 2m away from the wall. How high up the wall does it reach?give your answer in one decimal place.

    asked by Anonymous
  19. Physics

    In a Thomson's e/m experiment , with an accelerating potential of 150V and a deflecting electric field of magnitude 6*10^6 N/C , the electrons travel in a straight line . i)At what fraction of the speed of light do the electrons move? ii)what magnitude of

    asked by Prasanna
  20. Math word problem

    Bob has 22 dimes in his piggy bank.He has 5 times as many pennies.How much money does Bob have all together? A)$3.30 B) $1.2 C)$3.5O D)$1.10

    asked by Lovely
  21. Snethezekile High School

    History,Economics,Tourism,Business Studies,Math Lits What course Can A grade 11 Learner Choose When Doing This Subjects?

    asked by Fezeka Tembe
  22. English

    Please, explain me what does it mean about this quote. “Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure. It is our light, not our darkness that most frightens us. We ask ourselves, Who am I to be

    asked by Jason
  23. maths

    A mining company ha 10 000 m of fencing available.It wants to use a fencing to enclose a rectangular field. one side of the field is bordered by a river.If no fencing is placed on the side next to the river, What is the largest area that can be enclosed?

    asked by Vala
  24. Math

    Function f graphed at the right is linear. A. The x-coordinate, (1,0), tells us that f(1)= B. The y-coordinate, (0,3), tells us that f(0= C. Use the information from a and b (above) to determine which one is the graph of f. i. f(x)= -1/3x+3 ii. f(x)=

    asked by Kiolani
  25. Science

    How many parts listed make up a plant or animal cell nucleus?

    asked by cindy
  26. Math 10

    Express as sum or difference of logarithm log of x(3x-5) to the base of 4

    asked by Lea
  27. PHYSICS

    A grinding wheel with a 28cm diameter spins at a rate of 2020 revolutions per minute. What is the linear speed of the rim of the wheel?

    asked by blabla
  28. PHYSICS

    what is the central acceleration of an automobile driving at 40 kph on a circular tracks having radius of 30m?

    asked by blabla
  29. PHYSICS

    A bicycle tire is 68 cm in diameter. what frequency does it have if it travels at 8m/ sec?

    asked by blabla
  30. PHYSICS

    A 0.4 kg toy tied on a string can be whirled in a horizontal circle of of 1.2 m radius at a maximum of 3 rev/s before the string breaks. what is the force needed to break the string?

    asked by blabla
  31. PHYSICS

    Calculate the centripetal force on a 2100 kg carrounding a curve of 175 m radius at a speed of 60 kph.

    asked by blabla
  32. physics

    Two students are on a balcony 21.4 m above the street. One student throws a ball ver- tically downward at 15.6 m/s. At the same instant, the other student throws a ball verti- cally upward at the same speed. The second ball just misses the balcony on the

    asked by Heather
  33. math 4

    every saturday, mother and claire go to the market. on each marketing day, they spend 3 hours including the travel time. what fraction of the day is used in marketing every saturday? express your answer in lowest term.

    asked by juliana
  34. math urgent

    In an election Ram and sham were two candidates. Ram got 54% of the votes cast and secured the majority of 250 votes. If none of the votes cast were invalid, find the number of vote cast?

    asked by Rabinprakash
  35. Intermediate algebra

    How to solve the formula (I=prt for t) for the specified variable

    asked by Anonymous
  36. statistics

    A study was conducted in which the teachers were asked to rate students for a particular trait on a ten point scale. With the help of data given below. Find out whether significant difference exist in the rating of the student by the teacher. A B C D E F G

    asked by Anonymous
  37. statistics

    A study was conducted in which the teachers were asked to rate students for a particular trait on a ten point scale. With the help of data given below. Find out whether significant difference exist in the rating of the student by the teacher. A B C D E F G

    asked by Anonymous
  38. English 10

    The direction of "At the Tourist Centre in Boston" can be described as a. emotionally charged b. colloquial and relying on slang c. informal and simple d. mostly figurative and abstract

    asked by Jada
  39. Garcia

    Find the slope of the tangent line at x=3 F(x)=-2x+1 [-2(3+h)+1] - [-2(3)+1] ÷ h

    asked by Vanessa
  40. physics

    express the atmospheric pressure of 103360 pa in bar and milli bar

    asked by ajay
  41. Physics

    An object is traveling at a constant speed of 12.0 m/s when it slows to a stop. If it takes 10.0 m for the object to stop, what is the magnitude of its acceleration?

    asked by Tyler
  42. Math

    A rectangular courtyard is 57m 50 cm long and 22m broad. Determine the least possible number of square stones of the same size required to pave it

    asked by Noor
  43. chemistry

    how is silver separated from its soluble salt solution?

    asked by raghib
  44. Math

    Evaluate m over q + np2 for m = 24, n = 6, p = 9, and q = 8. 114 489 580 2,919 A

    asked by XenaGonzalez
  45. Math

    My math question is: 3 3 -5 (2x2) - (10-6) . 4 My answer is 15/16 Am I correct

    asked by Americal
  46. Tc Maths

    Prove: TanA+2Tan2A+4Tan4A+8Cot8A=CotA

    asked by Rabinprakash
  47. algebra

    suppose 48 out of every 120 people like baseball. of the people who like baseball, 3 out of 5 play baseball. If you ask 500 people, how many would you expect to play baseball?

    asked by Rachel
  48. gci ibadan

    crude oil is contained in an iron cylindrical tank whose heogth is 6m and the diameter of the base is 5m. at 0 degree celcius , the level of crude oil is 20cm below the brim. At what temperature will the crude oil start to overflow from the tank? the

    asked by mills
  49. Global school

    Child standing in front of a wall claps his hands and hears the Eco after 0.5 sec . Determine his distance from wall velocity of sound 340 meter per sec

    asked by Vishnu
  50. Chemistry

    What would be the new temperature in Celsius of a sample of methane if 205 ml at 725 torr and 75.0 degrees C is allowed to change to 907 ml and 827 torr? I used P1V1/T1=P2V2/T2 Plugged in the numbers (205)(725)/(348.15K)=(907)(827)/T2 When I solved for T2

    asked by Carl
  51. Check my answers MATH

    Which statement about the product is true? 5.643 times 4 point ModifyingAbove 6 with bar The product is irrational. The product is neither rational nor irrational. The nature of the product cannot be determined. The product is rational. Which of the

    asked by XenaGonzalez
  52. Pre-Calc

    Use the value of this trigonometric function to evaluate the indicated function. 1. cos(t) = 3/4 cos(-t) = ? Ans: 3/4 2. sin(-t) = 3/8 sin(t) = ? Ans: -(3/8)

    asked by Anonymous
  53. ELA

    6. Which statement about possessive nouns is true? Possessive nouns are always capitalized. Possessive nouns show ownership.♥ Possessive nouns name a specific person, place, or thing. Possessive nouns are never capitalized. 7. Which word has a meaning

    asked by YOLO
  54. science

    how many years will have to pass before only 3% of radioactive isotope is left if there is a half ye

    asked by edward
  55. Health and physical

    Your friend spends most of his free time eating junk food and playing games on the computer he is a very low energy level and many aches and pains which way on the health continuum is he moving ? A • wellness B • long life expectancy C • illness D

    asked by Serenity
  56. Chemistry

    26.0246 g of sodium carbonate is dissolved in water and the solution volume adjusted to 250.0 ml in a volumetric flask. A 25.00 ml sample of an unknown hydrochloric acid solution required 32.06 ml of the sodium carbonate solution for complete reaction.

    asked by Blaine
  57. Chemistry

    Which of the following is the strongest acid? 1. HNO2 4. H2SO3 2. H2CO3 5. HFO 3. HC1O3 6. H2O I'm really stuck, I know none of these are a "strong acid." I think the strongest might be HClO3 because Cl has the highest oxidation number and it has the most

    asked by George
  58. Social Studies

    1)How did the shift to farming impact native american cultures? A) Farming impact native cultures to build more permanent shelters out of brick, clay, stone, and wood. B) Agriculture led to a new way of life for native peoples, encouraging the development

    asked by Tim
  59. Chemistry

    Which of the following molecules has a double bond? 1. NO3- 4. H2 2. C2H4 5. C12 3. SO2 6. None of the previous answers I got that three of these molecules have a double bond (NO3-, SO2, and C2H4), but the answer is one. I am thinking that maybe the

    asked by Jim
  60. Chemistry

    The PH3 molecule is 1. linear 5. tetrahedral 2. bent 6. trigonal bipyramidal 3. planar triangular 7. octahedral 4. trigonal pyramidal 8. None of these Do you think the professor is asking for molecular shape or electron geometry. I know the electron

    asked by Jim
  61. Health and physical

    Your environment includes which of the following • heredity • social conditions • physical condition • advocacy

    asked by Serenity
  62. Math

    A rectangular courtyard is 57m 50 cm long and 22m broad. Determine the least possible number of square stones of the same size required to pave it

    asked by Noor
  63. Biology

    Which of the following properties of water would be most important in protecting a fish in a shallow pond on a hot summer day? the low density of water in the solid phase water’s strong forces of adhesion water’s high specific heat water’s solvent

    asked by SkatingDJ
  64. Algebra

    Plz help me! -12 divided by 3 •(-8 + (-4)^2 - 6) + 2 My teacher said the answer should be -6. But I don't know how to get to it. Plz Help!

    asked by Salted Caramel
  65. physical fitness (not homework)

    how do i alleviate the pain in my stomach after doing curl ups, crunches, and planking ? tank you

    asked by anon
  66. college algeb

    help :) 1.) cube root of 3x^2 multiplied to square root of 2x? 2.) square root of 3+2sqrt2 multiplied to sqrt of 3 - 2sqrt2 3.) sixth root of 12 divided by (sqrt 3 multiplied to cube root of 2) 4.) 4/cuberoot of 16

    asked by alaine
  67. Algebra

    Yesterday you borrowed $30 from your brother. Every day that you don't pay it back, you owe $2.00 more. So today, day 1, you owe him $32.00; on day 2 you will owe him $34.00; on day 3 you will owe him $36.00, etc. If you still haven't paid him back, how

    asked by Sandra
  68. Science

    Which of the following means using specific observations to make generalizations

    asked by Serenity
  69. Physics

    A model rocket is launched from rest with an upward acceleration of 6.30 m/s2 and, due to a strong wind, a horizontal acceleration of 1.50 m/s2. How far is the rocket from the launch pad 5.30 s later when the rocket engine runs out of fuel?

    asked by Jeff
  70. Life orantation

    What is road users

    asked by Timu
  71. Pre-Calc

    The displacement from equilibrium of an oscillating weight suspended by a spring and subject to the damping effect of friction is given by y(t) = (1/4)e^-t cos6t, where y is the displacement in feet and t is the time in seconds. Find the displacement when

    asked by Anonymous
  72. Pre-Calc

    Evaluate the two trigonometric functions using its period as an aid. 1. cos (9pi/2) = ? Ans: 0 2. cos (-9pi/2) = ? Ans: 0

    asked by Anonymous
  73. PE

    1. the period development of which a child develops into an adult is called? a. childhood process b. adolescences c. teen years d. blooming ( i think this is the answer) 2.characteristics caused by hormones but that do not include development of

    asked by TWD lover YUP
  74. Vaal reefs technical high school

    Science redox reaction lesson

    asked by Asemahle
  75. Science

    Which of the following means using specific observation to make generalizations A. Bias B. Subjective C. Deductive reasoning D. Inductive reasoning

    asked by Serenity
  76. Science

    Which of the following is not true about bias. A. Personal bias involves the influence of your own likes and dislikes B. Ethical bias involves basing a conclusion on too little data C. Cultural bias is influence from culture in which you grew up D.

    asked by Serenity
  77. Business Managment

    I just want to know if these are right and if not, which ones I got wrong. 1.Based on a _______ statement, a company sets long-term _______ mutually agreed on by workers and management and, from these, sets specific, short-term _______. A. vision; goals;

    asked by Krystal
  78. Science

    Victoria discovered a new way to keep her hands warm on a cold day what scientific attitude is this an example of A. Creativity B. Skepticism C. Honesty B. Good ethics

    asked by Serenity
  79. Physics

    An object initially at rest experiences an acceleration of 1.4 ­m/s² for 5.6 s then travels at that constant velocity for another 9.3 s. What is the magnitude of the object’s average velocity over the 14.9 s interval?

    asked by Austin
  80. Science

    Whenever Adrian plays his favorite video game he always A higher score if he plays well listen to music he wants to know if listening to music while playing video games affects other kids as well he decides to test all the boys in his class what should

    asked by Serenity
  81. Life Orientation

    Identify Four environmental issues that cause ill-health to your community.

    asked by Sduduzo Manyoni
  82. Social Studies

    Where was the native American population density higher in 1500? A.Greenland 2. Caribbean islands 3.Present day Florida 4.Present day California CAN SOME HELP PLEASE :))

    asked by Lee
  83. social studies

    Discussion for Analyzing Islamic Art Discussion Traditional Islamic art has a style of its own, shaped by the beliefs of Islam. Although the artwork varies by its location, century created, branch of Islam, and materials used, several common themes can be

    asked by SE
  84. Social Studies

    1)How did the people of the inca empire adapt to their surrounding physical environment A) By building longhouses and canoes out of bent trees and bark. B) by cutting terraces along steep slopes so they could plant crops. C)By pulling rich soil from the

    asked by Tim
  85. Algebra

    Students get two grades for a test in an introductory psychology course: a letter grade, and a numerical equivalent (weighted value). So an A is worth 4 points, a B is worth 3 points, a C is worth 2 points, a D is worth 1 point, and an F is worth 0 points.

    asked by Camry
  86. Social Studies Native Americans

    How did the Native American groups of the northern west coast adapt to their environment? a: they built their homes out of a sun dried brick called Adobe b: they had a nomadic culture, moving there teepees from place to place c: they used tree bark to make

    asked by Lee
  87. occupational therapy

    Which of the following questions is best worded for the confused patient? A. "When would you like to go for your walk?" B. "Would you like a drink with your dinner?" C. "What would you like to drink?" D. "When did your illness originate?"

    asked by ashley
  88. math

    why can subtraction problems be changed into addition?

    asked by Anonymous
  89. Science

    How many parts listed make up a plant or animal cell nucleus?

    asked by cindy
  90. algebra

    An executive drove from home at an average speed of 45 mph to an airport where a helicopter was waiting. The executive boarded the helicopter and flew to the corporate offices at an average speed of 120 mph. The entire distance was 250 miles; the entire

    asked by Samantha
  91. Science

    What are distinguishing features of animals?

    asked by Dado
  92. Heat Transfer

    The inside wall of a furnace needs to be designed such that it transmits a maximum heat flux of 600 W/m2 . The inside wall temperature will be 1100°C and the outside temperature will be 150°C. We have two different types of bricks from which we can make

    asked by Jacob
  93. Pre-Calc

    Find the point (x, y) on the unit circle that corresponds to the real number n. n = 5pi/3 (x, y) = ? Is it (1/2, -sqrt3/2)?

    asked by Anonymous
  94. health

    A patient who lost his or her hearing sometime after birth is said to be A. half-deaf. B. adventitiously deaf. C. incurably deaf. D. congenitally deaf.

    asked by ashley
  95. Science

    what is the primary distinction of being an animal? A) ability to ingest B) Having a backbone C) Ability to turn sunlight into energy D)Ability to reproduce

    asked by Dado
  96. Algebra

    what is the simplified form of the expression -(8d-3w)

    asked by Nikki
  97. Science

    How many cell must a fungi have?

    asked by Dado
  98. algebra

    . A rich merchant had collected many gold coins. He did not want anybody to know about them. One day, his wife asked, "How many gold coins do you have?" After pausing a moment, he replied, "Well! If I divide the coins into two unequal numbers, then 25

    asked by Samantha
  99. science

    a particle moves 1/3rd of the distance in aspeed of 6km/hr and rest with a speed of 18km/hr.find the average speed?

    asked by sidharth
  100. algebra

    Of the 30 officers on traffic duty, 15% didn't work on Friday. How many officers worked on Friday?

    asked by Samantha
  101. Social studies economics

    What does CPI compare? A) money to time B) Wal-mart to targets. C) Dollars to euros D) purchasing power at different times.

    asked by Dado
  102. health

    A patient who has difficulty functioning in her surroundings and completing daily life tasks due to an inability to organize information gathered from the senses probably has some type of _______ impairment. A. schizophrenic B. gross motor skill C.

    asked by duncan
  103. science

    What will happen if you choose surface speed too low?

    asked by PHATQ
  104. algebra

    A rich merchant had collected many gold coins. He did not want anybody to know about them. One day, his wife asked, "How many gold coins do you have?" After pausing a moment, he replied, "Well! If I divide the coins into two unequal numbers, then 25 times

    asked by Samantha
  105. Lukhanyo high school

    What are the impact of teenage suicide that impact the community socially

    asked by Olga mokwa
  106. math

    A pole is painted red, blue and green. One third (1/3) of the pole is painted red and one half (1/2) of the poles is painted blue. Five feet of the pole is painted green. What is the height of the pole?

    asked by nick
  107. math

    The weight of a bag of bricks plus 20% of its weight is 30 pounds. How much does the bag of bricks weigh, in pounds?

    asked by Matt
  108. Pre-Calc

    Find the point (x, y) on the unit circle that corresponds to the real number 5pi/6. Use it to evaluate cos n. Is cos n = (-sqrt(3)/2)?

    asked by Anonymous
  109. math

    An executive drove from home at an average speed of 45 mph to an airport where a helicopter was waiting. The executive boarded the helicopter and flew to the corporate offices at an average speed of 120 mph. The entire distance was 250 miles; the entire

    asked by Matt
  110. algebra II

    Calculate the metric volume of 30 gm of protein to dispensed if the 8.5% solution is available. What formula do I use?

    asked by Deb
  111. kgapane high school.Life orientation

    explain the extend to which bad road use has a direct impact on the physical,emotional,social And economic aspect to the family,the community and the country

    asked by khomotso
  112. Chemistry

    Hi guys! I just learned about significant figures today, and I have a question about them. My teacher gave us a problem where all values have what I think is four significant figures (like 44.56) except the value for temperature (which is 25.5C). Are

    asked by Allie
  113. math

    Bill can mow his mother's lawn in 45 minutes. His brother Jim can mow it in 65 minutes. How long will it take them to do it together, if each has his own lawnmower? (Record your answer in minutes rounded to one decimal place. For example, if the answer you

    asked by sam
  114. History

    In which order did these events take place? A) The United States declared war on Japan. B) Germany invaded neighboring countries. C) Japan attacked Pearl Harbor. D) Italy surrendered. MY Choice: C B D A

    asked by Patty
  115. algebra

    Of Maria's total salary, 1/4th goes to taxes and 2/3rds of what remains goes to food, rent, and bills. If she is left with $500 each month, what is her total monthly salary?

    asked by Sally
  116. Math

    Eight years ago, Heather was twice as old as her brother David. Today, she is 12 years older than him. How old is Heather now?

    asked by Kathy
  117. MATH HELP

    A store had 250 bottles of water. Each week, 40% of the bottles were sold and 48 new bottles arrived in shipments. Which recursive function best represents the number of bottles of water in the store, given that f(0) = 250? f(n) = f(n − 1) ⋅ 0.6 + 48,

    asked by Oscar
  118. Physics

    A solar still is used to make fresh water from salt water by evaporation. Assume that during a summer day that 1000 BTU/ft sq of solar energy falls on the surface of the salt water. Determine how many inches of water are evaporated in 30 days. Assume that

    asked by Steve
  119. Math

    O.675

    asked by Selah
  120. Sarah smith

    What is 95 divided by 4 equals and.can I have the question solved please

    asked by Aniya
  121. ICT1511

    Sam works at a coffee company where all the employees receive a bonus of R700, except the employees in the coffee department 3, who receive a bonus of R850. Enter his gross salary and his personal department number. Calculate the total income of Sam.

    asked by Kenneth
  122. History

    Which country’s leaders were mostly responsible for causing World War II? Germany Great Britain Japan United States My Choice Germany

    asked by Patty
  123. MATH HELP

    Match the sequence (term) with the correct type of sequence (definition). Match Term Definition 128, 32, 8, 2, ... A) Geometric, common ratio is 0.25 1, 3, 9, 27, ... B) Arithmetic, common difference is 5 5, 10, 15, 20, ... C) Geometric, common ratio is 3

    asked by Oscar
  124. History

    What was an effect of the Holocaust? A)People had to conserve resources to support the war effort. B)The United States drafted American men into the military. C)The Japanese attacked a U.S. port at Pearl Harbor. D)Millions of Jewish people died in Europe.

    asked by Patty
  125. Math

    Given that: 4x – y + 9 = 0 and 3y – 2x = 7, solve for x. does x=-2?

    asked by Will
  126. math

    A friend is building a dog pen with an area of 150 square feet. Each side must be at least 5 feet long. a. List all possible dimensions of the dog pen. b. What is the maximum amount of fence required to build the dog pen? How much fence is required? c.

    asked by Lakshmi
  127. algebra

    Assume that S/A = 7.0, D/A = .40, N/E = .80 and A = D + E. Solve for N/S.

    asked by Will
  128. Math

    Evaluate: 4•y^2 if y=5

    asked by Amy
  129. algebra

    An executive drove from home at an average speed of 45 mph to an airport where a helicopter was waiting. The executive boarded the helicopter and flew to the corporate offices at an average speed of 120 mph. The entire distance was 250 miles; the entire

    asked by Aaron
  130. Physics

    A box is pushed across a horizontal table by a boy applying a force of 32 N to the box. A force of friction of magnitude 19 N acts opposite the direction of motion. A stiff wind also opposes the box’s motion. What force does the box exert on the boy’s

    asked by Jake
  131. Risk Pooling Life Ins.

    hich of the following is another term for “insurance company?”

    asked by Kathy Smith
  132. Math

    Set of 18 counters

    asked by Parent
  133. Chemistry

    You leave 255 grams of water outside at 21.0 C in the sun. After 30.0 minutes the temperature is 35.0 C. A) how many calories of energy was used by the sun to heat the water up? B) how many joules of energy is this? C) How many Joules / second of power did

    asked by Vic
  134. Math

    Set of 18 counters 2x18=36

    asked by Parent
  135. science

    write a plan on how to seprate iron filings and sodium chloride crystals

    asked by nathan
  136. Math

    Use a calculator to evaluate the trigonometric function. Round to four decimal places. Make sure that your calculator is in the correct angle mode. 1) csc 2pi/5 1.3213? 2) sec 0.7 1.3075?

    asked by Anonymous
  137. Math

    by 3 pm the temperature had increased by another 5 degrees. was the temperature at 3pm positive or negative

    asked by Anna
  138. Grammar

    Is the subject to this sentence Our teacher or teacher? Our teacher likes ice cream.

    asked by Kaden
  139. Calculus

    If a ball is thrown into the air with a velocity of 40 ft/s, its height in feet t seconds later is given by y = 40t − 16t^2. Find the average velocity for the time period beginning when t = 2 and lasting for each of the following. 1) 0.5 seconds.

    asked by kelly
  140. Physics

    An object is traveling at a constant speed of 12.0 m/s when it slows to a stop. If it takes 10.0 m for the object to stop, what is the magnitude of its acceleration?

    asked by Anonymous
  141. Math

    Evaluate: X-3^2 if x= 24

    asked by Amy
  142. math

    Insert parentheses to make the statement true; 6 x 5 - 2^2 = 45

    asked by andrea
  143. math

    maria has a scale drawing of her bedroom so she can plan where to put her new furniture. The scale used is 1 inch= 3 feet. The dimensions if her room on the scale drawing are 4 inches by 4.5 inches. What is the actual area of her room?

    asked by Yanina
  144. Math

    how many 3 digit numbers can be formed using the digits 0,1,2,3,4,5,6, if repitition is not allowed?

    asked by Jacqueline
  145. life orientation

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

    asked by Nkoka
  146. Math

    at a track meet with 200 participants, 45 participate in jumping event, 1/3 of these jumpers are female, and 1/2 of the the total participants are female. What is the probability that a participant chosen at random is a jumper, given that the person is a

    asked by Jacqueline
  147. Chemistry

    A solution of ammonia and water contains 3.70×1025 water molecules and 7.10×1024 ammonia molecules. How many total hydrogen atoms are in this solution?

    asked by Mel
  148. Math

    Madeleine saved her allowance for 4 months to buy a new game. She spent 1/4 of her money on the game and 1/2 of the remaining money on another toy. If she brought 4 cool erasers for $2.15 each and had $8.90 left, how much did she save in 4 months?

    asked by Ly
  149. Physics

    A ball of mass 0.6 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 18 m/s at angle of 58◦ above the horizontal. The top of the fence is 10m

    asked by Lucy
  150. Physics

    A plane is flying horizontally with speed 193 m/s at a height 2010 m above the ground, when a package is dropped from the plane.The acceleration of gravity is 9.8 m/s^2. 1.What is the horizontal distance from the release point to the impact point? Answer

    asked by Anonymous
  151. Physics

    A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 36.8 m/s. At the same time, it has a horizontal velocity of 52.6 m/s. At what speed does the vehicle move along its descent path? Answer in units of m/s. At

    asked by Simon
  152. physics

    Consider two vectors F~ 1 and F~ 2 with magnitude F1 = 61 N and F2 = 63 N and where θ1 = 98 ◦ and θ2 = 50 ◦The angles are measured from the positive x axis with the counter-clockwise angular direction as positive. What is the magnitude of the

    asked by king
  153. math

    In a science experiment, the temperature fell 63 degrees Fahrenheit in 9 minutes. If the temperature fell at the same rate every minute, how many degrees did it change each minute? 63 divide by 9 = 7

    asked by MJ
  154. Math

    Simplify this expression. -12÷3•(-8+(-4^2)-6)+2. I'm confused on how to solve this. Thank you for the help.

    asked by josie
  155. Physics- Relativity

    A lighthouse sweeps its beam of light around in a circle once every 7.2 s. To an observer in a spaceship moving away from Earth, the beam of light completes one full circle every 9 s. What is the speed of the spaceship relative to Earth

    asked by John
  156. Math

    What is $89.75 times 0.06

    asked by Jennifer
  157. Chemistry

    One of the reactions that occurs in a blast furnace, in which iron ore is converted to cast iron, is Fe2O3 + 3CO → 2Fe + 3CO2 Suppose that 1.59 × 103 kg of Fe is obtained from a 2.54 × 103 kg sample of Fe2O3. Assuming that the reaction goes to

    asked by Helga
  158. Biology

    Which of the following depends on bacteria?

    asked by Megan
  159. math

    the number of fish in each aquarium at a pet store

    asked by Anonymous
  160. math

    A diver descended at a constant rate of 12.24 feet every 3 minutes. Which of the following is true? A. After one minute, the diver was at-4.08 feet B. After one minute, the diver was at 4.08 feet C. After one minute, the diver was at -6.62 D. After one

    asked by MJ
  161. Math algeabra

    A tortoise can travel 10 cm per second. what is the turtoise's speed in feet per hour?

    asked by sasha
  162. U.S Government

    What does policymaking system mean?

    asked by Lesly Roman
  163. math

    Triangle ABC is congruent to triangle xyz.write congruence statements comparing the corresponding parts.then determine which transformations map ABC onto xyz

    asked by tiffany
  164. math

    St. Augustine beach is changing -3ft. each year due to erosion. What will the overall change to the beach be in 7 years if this continues to occur? The over all change will be -21

    asked by MJ
  165. Chemistry

    Hello there! I was wondering if you could check my answers for me? I was having trouble and I finally understand. 1. Indicate the oxidation number of carbon and sulfur in the following compounds. A) CO= +2 C) Na2CO3= +4 E) CH4= -4 G) SO2= +4 I) Na2SO4= +6

    asked by Isabella
  166. math

    the tickets to a concert cost $10 for the lower level and $5 for the upper level. A total of 35000 tickets were sold for a total amount of 325000. how many lower level tickets were sold.

    asked by steve
  167. Math

    larry starts at the bottom of a long staircase. he climbs exactly 2/3 of the stairs. then he goes back down exactly 1/2 of the way to the bottom. from that spot he climbs exactly 2/3 of the way to the top. finally from there he climbs 6 stairs to reach the

    asked by Kiara
  168. Math

    Write an equation to represent the relationship " a number decreased by 7 is the same thing as 28" and then solve the equation

    asked by Ivory
  169. math

    Compare. Write , or = 5.37 < 5.370 is the answer

    asked by Trey
  170. Chem

    List several anions, by formula, that contribute to the salinity of a water sample. Is this the answer? : chloride sulfate sodium , Na bicarbonate carbonate bromide fluoride What does it mean by formula? thanks so much !

    asked by Dana
  171. precalc

    G(x)=2x+7 H(x)=1/(x+2) 1) H(G(x))= J: y=-3x^2 2) J(H(x))= 3) J/H=

    asked by a
  172. CALCULUS -HELP!

    How do you find all real values of x such that f(x)=0? Example 1: f(x)=15-3x Example 2: f(x)= (12-x^2)/5 Example 3: f(X)= x^3 -x

    asked by JAKE
  173. math

    Which of the following is not equivalent to -1/2 A. -1/-2 B. -[1/2] C. 1/-2 D.-0.5 The answer is A

    asked by MJ
  174. Math

    Please help me with this 12x = -8 -15 = -3x/5 x -2/3 = 3/8 Thank you BJ

    asked by BJ
  175. hydraulics

    The surface of the large piston is 4m2. What will the force (F2) be that is exerted by the large piston?

    asked by Donna
  176. Chemistry2

    A student pours 200 grams of methanol, a flammable substance into the sink. Another student causes the bad situation to get evern worse by dropping a lit match into the sink. The methanol burns completely with 300 grams of oxygen from the air. What mass,

    asked by Sam
  177. Chemistry

    Hi! I am totally stuck on this question: Explain why a cool flame is important to use in heating a solution to dryness. Can you please explain to me exactly why because I really do not understand. thank you!

    asked by Abigail
  178. Math

    f(0) = -2sin(4(0+45))-1 *the zeros is the symbol theta* Find the Amplitude,Period, Phase Shift and Vertical shift

    asked by Rose
  179. French

    answer options ce matin deux jours le week-end dernier hier soir pendant dernière fois deux semaines fill in the blank ____ , mes parents ont téléphoné du Sénégal où ils passent des vacances. Le Sénégal a beaucoup changé depuis la____ que mon

    asked by viv
  180. Children's Literature

    Moral reasoning at stage __________ is widely represented in the decisions that book characters make. I think it is B but not sure. A. 1 B. 2 C. 3 D. 4

    asked by Dawn
  181. Chem-HELP

    Can you please help me with these questions. I tried looking up information online and in my textbook but I could not find sufficient information to help me. 1. What is an aliquot of a sample? 2. What is the filtrate in a gravity procedure? 3. How full

    asked by Zef
  182. Math question

    You have 8 sticks. 4 are exactly half the height of the other 4. Arrange the sticks that you make exactly three squares of same size. No breaking or bending the sticks.

    asked by Math question
  183. Golden oak

    An assembly line worker at robs bicycle factory IDC to bicycle a rate of 2 seats in 11 minutes writing reports you relating the number of seats as to the number of minutes and at this rate how long will it take to add 60 seats and 19 seats?

    asked by Alleigh
  184. Calculus and Vectors

    In triangle RST, RS=4, RT=7, and ST=5. Determine the measures of the angles to the nearest degree. I solved correctly for T's angle of 34 degrees. Once I try using the sine law to solve for angle S, I keep getting 78 degrees, when it's supposed to be 102

    asked by Chuck
  185. Algebra grade 7

    a square carpet covers an area of 64 ft ^2. what is the length of each side of the carpet?

    asked by Latoya
  186. statics

    a bench is 2.4m long.the legs are attached .3m from each end.if 3 boys weighing 500n,750n,1000n seated.4,1.2m,2m from end of the bench,what force must eachset of leg exert

    asked by pion
  187. Math 7th grade

    -0.5167 is this number rational or irrational ? Thank you

    asked by Holly
  188. vocabulary

    A will be sent to all our representatives in Latin America advising them how to handle the problem

    asked by br
  189. math

    Describe and correct the error in writing the factor pairs of 30. 30= 2*15 30=3*10 30=5*6

    asked by lakshmi
  190. math

    a chemist wants to create a solution that is 36% acid. How many liters of a 60% acid solution must be added to 30 liters of a 15% acid solution to obtain this 36% acid mixture?

    asked by Alexa
  191. Physics

    PLEASE HELP! this is do tomorrow :( I have no clue how to do any of it. A plane is flying horizontally with speed 193 m/s at a height 2010 m above the ground, when a package is dropped from the plane.The acceleration of gravity is 9.8 m/s^2. 1.What is the

    asked by Lucy
  192. Physics

    PLEASE help! This is due tomorrow, and I really need to know how to do it. A ball of mass 0.6 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 18

    asked by Anonymous
  193. Physics

    A ladder 10-m long and weighing 50 N rests against a smooth vertical wall. If the ladder is just on the verge of slipping when it makes a 50 degree angle with the ground, find the coefficient of static friction between the ladder and the ground.

    asked by RenRen
  194. Finance

    what is the initial rate of return for the following project: An initial outlay of 9,500 resulting in a single cash flow of 16,281 in 7 years

    asked by Tremeta
  195. Math

    Using the break apart method what is the best way to multiply 8x7

    asked by Sophia
  196. Quick physics check

    1. During a five minute period a caterpillar crawls in a straight line along the edge of a meter stick from the 18 cm mark to the 42 cm mark. The displacement of the caterpillar during this time is A. 18 cm B. 24 cm C. 42 cm D. 60cm Is it 24 cm? 2. During

    asked by Emily
  197. Math

    Which number goes in the box to make the number sentence true? (3+4)+7=3+ (4+_)

    asked by Brandi
  198. Physics

    On a drive from your home to town, you wish to average 52 mph. The distance from your home to town is 108 miles. However, at 54 miles (half way), you find you have averaged only 39 mph. What average speed must you maintain in the remaining distance in

    asked by Karen
  199. ENGLISH SOS!!!!!!!!! MS SUE, SOMEONE, PLEASE!

    IS The italicized word in the sentence below an adverb or a preposition? Why don't you come OVER this evening? A. Adverb. B. Preposition. C. None of the above. Which sentence below uses the word FINE as an interjection? A. The weather is very FINE today.

    asked by ToriKat
  200. 7th Grade

    You have 8 sticks. 4 are exactly half the height of the other 4. Arrange the sticks that you make exactly three squares of same size. No breaking or bending the sticks.

    asked by 7th Grade
  201. Chemistry

    O5F2 Express your answer using two decimal places. I got 118, but when I rounded it to 120 and made it 1.2*10^1, it said I was wrong. What did I do wrong?

    asked by Finn
  202. Physics

    An ideal gas starts in state A at temperature T. The gas expands to new volume V by an adiabatic process and its final temperature is T′. What is the relationship between T and T′? A) T < T′ B) T > T′ C) T = T′ D) The answer depends on the heat

    asked by Tim
  203. Physics

    Nitrogen boils at -196°C. What is the corresponding temperature in the Fahrenheit scale? A) -290°F B) -346°F C) -315°F D) -196°F E) -321°F

    asked by Karen
  204. math

    Nine basketball players went to get pizza. They bought six pizzas. How much oizza will each one get?

    asked by lia
  205. Physics

    For chlorine gas, the van der Waals constants are: a = 0.658 J·m3/mol2, and b = 5.62 × 10-5 m3/mol. A 3.0-L tank contains 10.0 moles of chlorine gas at a temperature of 625 K. What is the pressure in the container? A) 15.0 MPa B) 17.3 MPa C) 13.5 MPa D)

    asked by Kelsey
  206. Chemistry

    How do I calculate the molar mass of the following: Na2SO4.10 H2O(s) CaSO4.2H2O(s)

    asked by Anonymous
  207. CHEMISTRY

    Hello there! I was wondering if you could check my answers for me? I was having trouble and I finally understand. 1. Indicate the oxidation number of carbon and sulfur in the following compounds. A) CO= +2 C) Na2CO3= +4 E) CH4= -4 G) SO2= +4 I) Na2SO4= +6

    asked by Isabella
  208. Social Studies

    what have the earliest people might have seen while crossing the bering land bridge?

    asked by brooke
  209. Social Studies

    How long ago was 1000 C.E. ? You would find the answer by A. Subtracting 1000 C.E. from the present year B. Adding 1000 C.E. to the present year Thank you.

    asked by Sabrina
  210. Chemistry- PLEASE HELP

    Hi! I really really need help in this question: what observation is expected when: 1. an acid (nitric acid, HNO3) is added to a solution containing carbonate or bicarbonate ions? 2. silver ion is added to a solution containing chloride (or bromide or

    asked by Alex
  211. Physics

    In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0854 s, during which time it experiences an acceleration of 217 m/s2. The ball is launched at an angle of 58.3° above the ground. Determine the (a)

    asked by Annie
  212. Geometry

    The floor of a rectangular room measures 18.9 feet by 15.75 feet. Find the perimeter of the room

    asked by Dawn
  213. community psycology

    When Bullying Turns Deadly: Can It Be Stopped? Thesis: To me, it was normal because that's what I was used to. This was in an article was wondering if the thesis is good

    asked by Ann
  214. Physics

    A car travels along a straight stretch of road. It proceeds for 16.1 mi at 56 mi/h, then 24 mi at 46 mi/h, and finally 36.9 mi at 37.3 mi/h. What is the car’s average velocity during the entire trip? Answer in units of mi/h.

    asked by Isabelle
  215. algebra

    a tortoise can travel 10 cm per second. what is the tutortise's speed in feet per hour?

    asked by sahsa
  216. algebra

    an 18000 gallon pool takes approximately 40 hours to fill. what is this rate in pints per minute?

    asked by sahsa
  217. algebra

    a tub can drain 24 gallons of water in 5 mintues. what is this rate in cups per second?

    asked by sahsa
  218. chemistry

    An experiment was conducted in which many pieces of data were collected. Considering all of the data, the limiting number of significant figures in the experiment was 3 significant figures. One of the values needed in these calculations was the barometric

    asked by Jas
  219. science

    In the cabin of a jetliner that cruises at 600km/h, a pillow from an overhead rack falls into your lap below since the jetliner is moving so fast, why doesn't the pillow slam into the rear of the compartment when it drops? What is the horizontal speed of

    asked by Jose
  220. physics

    A 4.30 kg block is pushed along a floor by a constant applied force that is horizontal and has a magnitude of 43.0 N. The figure gives the block's speed v versus time t as the block moves along an x axis on the floor. The scale of the figure's vertical

    asked by rochelle
  221. Math

    When I am rounded to the nearest ten, I am 50. The sum of my digits is 13. Who am I?

    asked by Amaryi
  222. probability

    A survey asks people about their reading habits with respect to three newspapers. The results show that 56% read newspaper A, 33% read newspaper B, and 27% read newspapers C. 7% of the respondents read newspapers A and B, 8% of the respondents read

    asked by Alex
  223. physics

    After flying for 13 min in a wind blowing 44 km/h at an angle of 21° south of east, an airplane pilot is over a town that is 53 km due north of the starting point. What is the speed of the airplane relative to the air?

    asked by Help
  224. grambling

    3 radical 192

    asked by kaih
  225. Chemistry2

    12.) Chlorine reacts with potassium bromide to produce potassium chloride and bromine. a.) write a chemical equation, using words, to represent the above chemical reaction. Answer: Chlorine + potassium bromide ==> potassium chloride + bromine (Is this

    asked by Sam
  226. probability

    Two hunters shoot at the same duck. The probability of the first hunter hitting the duck is 0.2. The probability of the second hunter hitting the duck is 0.75. Hitting the duck results in its death. What is the probability of the duck being killed?

    asked by Alex
  227. Chemistry 2

    36.) Suppose a chemistry student discoveres that a block of pure ice is left on her porch as she goes to school one day. What will be the percent composition of the pure ice block?

    asked by Sam
  228. science

    an aeroplane travels 280m down the runway before taking off.if it start from rest , moves constant acceleration and becomes airbone in 8 second what is its speedin m/s,when it takes off

    asked by ashika
  229. Math

    Evaluate the two trigonometric functions using its period as an aid. 1. cos (9pi/2) = ? Ans: 0 2. cos (-9pi/2) = ? Ans: 0 I think they are both 0 because cos(t) = x.

    asked by Anonymous
  230. algebra 1

    a tortoise can travel 10 cm per second. what is the tortoise's speed in feet per hour? an 18,000 gallon pool takes approximately 40 hours to fill. what is this rate in pints per mintue. a tub can drain 24 gallons of water in 5 minutes . what is this rate

    asked by sahsa to reiny
  231. Math

    She ties rope to the stakes to section off a rectangle.eqch unit represents 1foot.what is the perimeter of the rectangle in feet

    asked by Takia
  232. Chemistry

    Hi! I really really need help in this question: what observation is expected when: 1. an acid (nitric acid, HNO3) is added to a solution containing carbonate or bicarbonate ions? 2. silver ion is added to a solution containing chloride (or bromide or

    asked by Alex
  233. PHysics

    An athlete crosses a 21 m wide river by swimming perpendicular to the water current at a speed of 1.1 m/s relative to the water. How fast is the water in the river flowing with respect to the ground in m/s?

    asked by Seth
  234. math

    i have 5 questions about adding rational numbers and want you to check my answers. tank you for reviewing my questions tutors 1. -3/2 - 7/4 + 1/8 my answer: -.3375 2. Alex borrowed $12.50 from his friend Danilo. He paid him back $8.75. How much does he

    asked by anon
  235. science!

    i have 6 questions, each with an answer. i would appreciate if you review the questions check my answers. tank you very much tutors. variables and graphing assessment practice Ethylene is a plant hormone that causes the fruit to mature. The data below

    asked by anon
  236. algebra 2

    How can you model data with a linear function?

    asked by cj
  237. science

    13. A ball is thrown vertically upwards and it returns to the thrower after 6 sec ( g=9.8 m/s2) Find. (i) The velocity with which it was thrown up. (ii) The maximum height it reaches (iii) Its position after 4 sec.

    asked by Atul
  238. 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
  239. English

    1. He used to take a walk in the park. 2. He used to swim in this river. 3. He used to live in Chicago. 4. He used to drive a car to New York. 5. He used to walk his dog along the road. 6. He used to play soccer when he was young. 7. He used to cook

    asked by rfvv
  240. Physics ( Thickness of a Spherical Shell)

    Aluminum floater: A spherical shell with an outer radius R=2 cm is made of aluminum (mass density of Al is 2.7 g/cm3). How thick is the shell if the average density of the spherical object is exactly 0.5 g/cm3 ? Assume there is a vacuum in the hollow

    asked by JC
  241. history

    Describe the early voyages of Spain and Portugal and their early attempts (1500-1750) at settlement and colonization in North and South America.

    asked by Tressa
  242. Algebra

    The quotient of 66 and 6

    asked by MyA
  243. Math algebra

    Graph g(x)= 2x+8 if x

    asked by Feather
  244. FRENCH

    Can someone check to see if everything is evenly in past tense? Check for any grammatical errors, if i'm using french words wrong in its content. How should I fix them? Also the words or phrases in parenthesis are the words or phrases that I HAVE to

    asked by ZOE
  245. Physics

    The three displacement vectors in the drawing have magnitudes of A = 5.48 m, B = 5.23 m, and C = 4.75 m. Find the resultant ((a) magnitude and (b) directional angle) of the three vectors by means of the component method. Express the directional angle as an

    asked by joe
  246. Math

    On December 10, 2014, Jennings, Inc. paid out total dividends of $450,000 (this was the only dividend payment made during the year). If Jennings reported Retained earnings of $2,186,000 for 2013 and Retained earnings of $2,380,000 for 2014, what was

    asked by Aaron
  247. Chemistry

    please show me step by step how to do this so i can figure out the rest We add excess Na2CrO4 solution to 42.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to

    asked by Hannah
  248. Math

    In 2014, the Whaddock Company purchased 1,560,000 units from its supplier at a cost of $250.00 per unit. Whaddock sold 1,525,000 units of its product in 2014 at a price of $350.00 per unit. Whaddock began 2014 with 425,000 units in inventory (inventory is

    asked by Sabrina
  249. History,Maths Literacy,Geography &Life Science

    Which carrer do path with this subject?

    asked by Silence