Questions Asked on
May 8, 2017

  1. math

    If TanA=k.TanB prove that (k+1)sin(A-B)=(k-1)sin(A+B).

  2. MATH

    Which solid figure has 5 faces, 5 vertices, and 8 edges. Triangular pyramid Rectangular pyramid Pentagonal pyramid*** Triangular prism

  3. Geometry

    Given: ΔABC, AB = BC Perimeter of ΔABC = 50 Perimeter of ΔABD = 40 Find: BD BD is the altitude and I got 15, 15+20+5=40 20+20+10=50

  4. Calculus

    A light in a lighthouse 5 kilometers offshore from a straight shoreline is rotating at 4 revolutions per minute. How fast is the beam moving along the shoreline when it passes the point 5 kilometers from the point opposite the​ lighthouse?

  5. health

    1. When performing rescue breathing, be sure to always ________ the head before performing breaths. (1 point) level tilt push twist

  6. Chemistry

    What is the process to calculate ΔH° for the reaction? O2(g) + 2NO(g) --> N2O4(g) O2(g) + 2NO(g) --> 2NO2(g) ΔH°1 N2O4(g) --> 2NO2(g) ΔH°2 a) ΔH°1 + ΔH°2 b) ΔH°1 - ΔH°2 c) ΔH°2 - ΔH°1 d) ΔH°1 - 2ΔH°2 I know according to Hess' Law that

  7. Physics

    A 1000 kg rocket without an internal propulsion system is launched with an initial speed of 7.00 x 102 m/s. Determine the maximum height attained by the rocket.

  8. history

    the reign if terror was a necessary evil .discuss this assertion

  9. Language Arts

    according to "happiness is a charming charlie brown at orlando rep,) how do the technical aspects of the play compare with the performers? A) they do not achieve the same quality B) they are equally as good C) they overshadow them D) they are much more

  10. ELA

    1. which of the following details about the author's life most likely influenced her ideas for the novel Walk Two Moons: A. she came from a large family B. Her family was typically a noisy and rowdy bunch C. she enjoyed family vacations piled in the car on

  11. Texas History

    Can someone on connexus help me with this test? 1.What was a big difference between the Texas constitution of 1836 and the Texas Constitution of 1845? A.The constitution of 1845 did not have a separation of powers like that of the constitution of 1836.

  12. Physics

    A charge with a value of 3.0 x 10-5 C is located 2.5 cm from a charge with a value of 6.5 x 10-5 C. Determine the distance from the larger charge to the point where the total electric field is zero.

  13. Geometry

    Two poles of lengths 10 ft. and 15 ft. are set up vertically with their bases on horizontal ground 12 ft apart. Find the distance between the tops of the poles. I got 7.53 ft is this right, if not can you explain and post solution

  14. math

    A hollow iron pipe is 2.1m long and its external diameter is 4.5 cm.if the thickness of pipe is 0.25cm and weight of iron is 4 gm/cm3, then the weight of pipe is? (ans 2.805kg) ?

  15. 4th grade math

    Can you help? 1. Choose the best estimate for the length of a bottle of glue. a. 15 millimeters b. 15 centimeters c. 15 meters d. 15 kilometers I know it's not c or d. So, i think it is a - 15 millimeters because length of 15 centimeters (length of

  16. math

    Mathew rolls a number cube labeled with the numbers 1−6. He then flips a fair coin. What is the probability that he rolls a 4 and flips a head

  17. m

    which of the following fraction is greater than 3/4 and less than 5/6.

  18. Math

    1. Use 3.14 for pie to estimate the area of a circle. The diameter is given. Round your answer to the nearest hundredth if necessary. (the diameter is 16.8) 2. Find the missing length. Round to the nearest tenth, if necessary. (7,19)

  19. calculus

    Find the area of the region enclosed by the parametric equation x = t^3−3t y = 6t^2.

  20. math

    Two minor league baseball players got a total of 300 hits. Washington had 14 more hits than Sanchez. Find the number of hits for each player.

  21. maths

    The temperture of a mixture decrease at the rate of 1degree per 30 mins the twmperature of mixture at 3oclock was 5degree At what time will the temperature be 3degree below zero ? What will be the temperature of mixture at 6oclock?

  22. Algebra 2 check

    The graph of y =1/x is vertically stretched by a factor of 3, reflected across the y-axis and shifted to the left by 2 units. What is the function of the resulting graph? y=3/x-2 y=-3/x+2 y=1/3x-6 y=-1/3x+6 my answer is B

  23. geometetry

    Given: KLMN is a trapezoid, m∠K = 90°, LM = 9, KN = 18, MN = 15. Find: Area of KLMN Please I really need help!!!!

  24. math

    Last year, Carmen had $20,000 to invest. She invested some of it in an account that paid 9% simple interest per year, and she invested the rest in an account that paid 5% simple interest per year. After one year, she received a total of $1680 in interest.

  25. calc

    find an equation of the line tangent to the circle (x-1)^2+(y-1)^2=25 at the point (4,-3) Can please someone explain this to me and show all work very confused

  26. Math

    At the city museum, child admission is $5.40 and adult admission is $9.30. On Friday, 134 tickets were sold for a total of $957.60. How many adult tickets were sold that day?

  27. physics

    I need a answer about these? Calculate the net electric force exerted on a particle of charge -4.0mc due to the influence of charge +5.0mc and -3.0mc at distance of 20cm & 80cm, 50cm from it?

  28. math

    Monica is one-third as olf as her sister. six years hence she will be one-half as old as her sister find their present age

  29. Math

    (2ab)squared divided by 6/m cubed

  30. Math

    Find the horizontal distance a ball travels after 3 seconds, if the ball is hit with an initial velocity of 90 feet per second at an angle of 60 degrees from an initial height of 5 feet.

  31. Trig

    To help a young tree grow straight, a gardener attaches three guy wires to it and the ground. She places the wires two feet below the top of the tree. If the wires are ten feet long and each makes an angle of 58 degrees with the ground. Find the height of

  32. Algebra

    21. simplify (2sqrt5+3sqrt7)^2 show your work. Been confused on it for a while.

  33. Biophysics

    Consider the flow of blood through a large horizontal artery with 1.0 mm of diameter. The artery has a smooth reduction to an artery 0.5 mm in diameter. If the pressure of the blood in the larger artery is 8.00 x 104 Pa and the pressure in the smaller

  34. physics

    A constant force acts on a body mass 0.9 kg at rest for 10s.If the body moves a distance of 250m ,the magnitude of the force is

  35. health

    1. When performing rescue breathing, be sure to always ________ the head before performing breaths. (1 point) level tilt push twist

  36. algebra

    What is the answer to algebra with pizzazz page 168??? Numbers for each letter.

  37. Algebra 2 struggle

    How is the the graph of y=1/2x-6 obtained from the graph of y=1/x ? A) Vertically stretched by a factor of 2 and shifted right by 3 units. B) Vertically stretched by a factor of 3 and shifted right by 2 units. C) Horizontally stretched by a factor of 2 and

  38. PE NEED HELP

    1. Describe how intoxication affects the excretory system. A.drinker loses more water from the body than usual B.more blood flows to the skin's surface C. sensations and perceptions become less clear D.to much alcohol in the stomach can cause vomiting

  39. Chemistry

    According to kinetic-molecular theory, particles of an ideal gas a) are motionless b) have zero masses c) attract each other d) have negligible volumes

  40. physics

    1. A bullet has mass 5g. It is fired with a velocity of 50 ms-1 (g=9.8 ms-2) and strikes on a pendulum of mass 5 kg. Find out the height at which the pendulum is raised.

  41. Social studies 7

    Which job would likely have the lowest income? A job that many people are welling to do•• A job that takes highly specialized skills A job that requires a college diploma A job that requisa lot of travel

  42. PHYSICS

    1.How does a flip work? pretend your on a trampoline and jump vertically. How can you jump up in the air and flip.Where is the force coming from to give you a torque? 2.Do you add up linear momentum and rotational momentum for a net momentum? Like energy?

  43. English

    How to write a formal letter for municipality about a broken pipe

  44. Math

    A computer is purchased at 2000$. After each year, the resale value decreases by 25%. What will the resale value be after 3 years?

  45. math

    Point A,B,C and D are midpoints of sides of square EFGH. If area of EFGH is 48cm2 then area of ABCD is? (ans 24cm2)

  46. Science

    A cyclist speed up at a constant rate from rest to 8m/s to 6s. Find the acceleration of the cyclist

  47. Chemistry

    Use the 1/2 reaction method to balance the equation below in acidic solution. Cl2 (g) + I- (aq) = Cl- (aq) + IO3- (aq)

  48. math

    find the surface area of the prism. A:426 msquared B:306 m2 C:336 m2 D:213 m2 Note: prism is rectangular or squared and uh height is nine base is 12 and other part is 5m pls help

  49. Algebra

    The area of an isosceles right triangle is 18cm square. Find the lengths of the legs.

  50. Algebra

    Can you please help me on this question for Algebra: Write the word that the number 32/33 represents. From this word, take out the opposite of the word that means you get three strikes in baseball. Now unscramble the remaining letters to get what 12 is to

  51. math

    One lap around a track is equal to one-sixth of a mile. A horse ran a distance of 7 laps in 3 minutes and 20 seconds. What is the horse’s average speed in miles per minute? HELPPP PLEASE!!!!!!

  52. Statistics

    the probability that A hits a target is 1/4 and the probability that B hits the target id 1/3. if each fires once and the target is hit only once, what is the probability that A hit the target?

  53. physics

    You push back and forth on a 5 m high flagpole and make it sway back and forth. When you push it with a frequency of 2 Hz you get it into its fundamental standing wave. a) How fast do the waves travel through the flagpole? b) What frequency would you have

  54. Math

    The length of a rectangle is 5 meters more than twice the width, and the area of a rectangle is 42 square meters. Find the length and width of the rectangle.

  55. Chemistry

    A container at room temperature is filled with equal moles of O2(g), NO2(g) and He(g). The gases slowly leak through a pinhole in the container. After some gas has effused, which relationship is true about the partial pressures of the gas remaining in the

  56. Chemistry

    to prepare 50.0 g of 10% NaNo3 solution you will need how many grams of solute? i am having trouble settin these solutions equations up

  57. physics

    What frequency would a listener hear if a train moves away from the listener at 180 km/hr? The frequency of the horn is 3500 Hz, and the air temperature is 19.0 degrees Celsius. Show work, and include 3 significant figures.

  58. physics

    A tube that is open on both ends is 4 meters long. Assuming that the speed of sound is 340m/s, find the following: a) What is the wavelength of the fundamental standing wave (the first harmonic) b) What is the frequency of the fundamental wave? c) What is

  59. Chemistry

    to prepare 50.0 g of 10% NaNo3 solution you will need how many grams of solute

  60. physics

    A ship is anchored in a bay. The echo of the ship's foghorn, reflected from an iceberg, is heard 5.0 seconds after the horn is sounded. The temperature of the air is -10.0 degrees Celsius. How many meters away is the iceberg? Show your work.

  61. physics

    A string is vibrated with a wave that has a wavelength of 6 meters. How long is 1 loop of the standing wave?

  62. math

    12x^3-26x^2y^2-30xy^3

  63. physics

    A tube that is open on both ends is 4 meters long. Assuming that the speed of sound is 340m/s, find the following: a) What is the wavelength of the fundamental standing wave (the first harmonic) b) What is the frequency of the fundamental wave? c) What is

  64. Math

    Convert 2m/s to km/h

  65. Math

    4m(m-3)+2m squared

  66. Stat

    A squad is made up of 10 privates and 5 privates first class. (a) In how many ways can a detail of 4 privates and 2 privates first class be formed?

  67. Physics

    An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 10.9 m/s in 2.20 s. Assuming that the acceleration of the bird remains the same, how far the bird will travel before it comes to a full stop?

  68. Math

    Find the Largest share $360 000 is divided in the ratio 3:4:5

  69. Math

    Simplify 3x -(5x+2)

  70. Math

    Solve 5x-3 over 2=4

  71. Algebra/Trig

    To ensure safety, the recommended angle that a ladder leaning against a building makes with the ground is 75 degrees. Will a 12 foot ladder reach a window 10 feet above the ground if it leans against the building with this angle? Use trigonometry to

  72. Math

    If a wheel have a diameter of 50 centimeters. How many centimeters will the wheel travel if it makes 25 complete revolutions

  73. chemistry

    if 5.76 grams of co2 forms when 4.00 grams of c2h6 reacts, what is the percent yield for 2c2h6+7o2=4co2+6h2o

  74. physics

    Someone is blowing over the top of a water bottle creating a noise. If the bottle is 0.3m tall and has 0.1m of water in it, find the following (assume the speed of sound is 340m/s)

  75. science

    The ozone layer is located

  76. Macroeconomics

    In graph form, what will a decrease in marginal propensity to import look like?

  77. Macroeconomics

    Could someone please show me in a graph how a decrease in marginal propensity to consume would look please

  78. Algebra 2

    How is g(x) =1/2x-4 from the parent graph ƒ(x) =1/x A) Vertically stretched by a factor of 2 and shifted right 2 units. B) Horizontally stretched by a factor of 2 and shifted right 4 units. C) Vertically compressed by a factor of 1/2 and shifted left 2

  79. Mathe ASAP due really soon

    from midnight to 6:00 AM the temperature rose 8C at 6:00AM the temperature was at -20C what was the temperature at midnight when your tell me the answer can you show how to do it step by step to the answer please thank you!

  80. math

    what is the function rule for x-2,y9,x-1,y4,x0,y-1,x1,y-6,x2,y-11

  81. algebra

    Will someone please check my answer: If R is the gene for brown eyes,and L is the gene for blue eyes, consider the children of a parent with a homozygous brown-eyed,RR,gene combination and a parent with a homozygous brown-eyed,RL,gene combination. What

  82. Math help quick!

    1. Based on a survey, 3 out of 10 like to play the flute. For a class of 700, how many flutes should the teacher pre-order? 70 flutes 210 flutes*** 300 flutes 490 flutes 2. The probability of getting a winning scratch off ticket is 4 out of 10. If Dan buys

  83. Social Studies

    Pacific island nations tend to have a lower GDP than other parts of the world because of... Too many environmental problems Overpopulation Lack of free markets Isolation I think it's D Thanks!

  84. trig ratios'

    To help a young tree grow straight, a gardener attaches three guy wires to it and the ground. She places the wires two feet below the top of the tree. If the wires are ten feet long and each makes an angle of 58 degrees with the ground. Find the height of

  85. Math

    It is a prime number. The number is less than 30,greater than 20. The sum of thedigit is less than 10. What is the mystery number

  86. Social Studies

    Why might education in the Pacific islands be important for the economy of this area? A. If children learn about the importance of the environment to the economy, they will be more likely to protect it as adults B. Education cannot change environmental

  87. Chemistry

    100g of water are saturated with KNO3 at 50˚c. how many grams of KNO3 will crystallize out if the temperature cools to 40˚c. solubility curve.

  88. Chemistry

    Determine the starting mass of each reactant if 46.3 of K3PO4 is produced and 92.8 of H3PO4 remains unreacted. 3KOH + H3PO4 ----> K3PO4 + 3H2O

  89. Chemistry

    Determine the starting mass of each reactant if 46.3 of K3PO4 is produced and 92.8 of H3PO4 remains unreacted. 3KOH + H3PO4 ----> K3PO4 + 3H2O

  90. chemistry

    100g of water are saturated with KNO3 at 50Ëšc. how many grams of KNO3 will crystallize out if the temperature cools to 40Ëšc? A. 10g B.19g C.64g D.83g

  91. trig

    To help a sapling (young tree) grow straight, a gardener attaches three guy wires to it and the ground. She places the wires two feet below the top of the tree. If the wires are ten feet long and each makes an angle of 58 degrees with the ground, find the

  92. Algebra

    Which of the following ordered pairs represents the solution to the system given below? 2x + y = 20 4x − 2y = 40 A. (10, 0)***** B. (0, 10) C.(4, 2) D. (10, −10) Check my work please!

  93. Literature

    Since the time of the play's first performance, the props and set have been designed to be minimal so that the play can be performed in outdoor as well as indoor locations the play becomes more appealing for younger audiences **my answer actors must think

  94. Corporate Finance

    Jason's opportunity cost rate is 8 percent compounded annually. How much must he deposit in an account today if he wants to receive $5,400 at the end of each of the next 10 years? Use a financial calculator to determine the amount to be deposited today.​

  95. Math help

    If y = 3 is a horizontal asymptote of a rational function, which must be true? A) lim x→ 3 f(x) = 0 B) lim x→ 0 f(x) = 3 C) lim x→ ∞ f(x) = 3 D) lim x→ 3 f(x) = ∞ My answer is B

  96. math

    Mark is learning to snowboard. The club charges $10 per hour for snowboard lessons and $40 for the lift ticket and a snowboard rental. Which value represents the rate of change for this scenario?

  97. math

    57.612-(-80.1)=

  98. English pls help

    what lesson does milo learn in the phantom tollbooth?!? please help as soon as possible.

  99. math

    If Tan (A+B)=1/3 and Tan(A-B)=2/5,then prove that A.Tan2A=11/13 B.Tan2B=-1/17

  100. English

    Identify the italicized phrase in the following sentence. Jolene went to the city to find a new job.

  101. Math

    Three circles which touch each other externally with the center of the circles at A, B, C form a triangle with size of 9cm, 7cm, 6cm.calculate the radii of the circle

  102. math

    six bags of baseballs weigh 0.5 kilograms each. The balls are then packed into 10 boxes. What is the total mass of the six bags of baseballs? What is the mass of each box? If each box costs $1.80, how much did the boxes cost altogether?

  103. math

    The height of a picture is 4.3 feet when rounded to the nearest tenth of a foot. What is the shortest possible height of the picture. Give answer to 3 decimal places

  104. Science

    Which of the following is true about the electric charges on the objects below The ball on the right has a positive charge and the ball on the left has a negative charge The ball on the left has a positive charge and the ball on the right has a negative

  105. maths

    2 trains are 2 km apart and their lengths are 200m and 300m.They are approaching towards each other with a speed of 20m/s and 30m/s.After how much time they cross each other ?

  106. Math

    the frequency table shows the ages of 30 children who participate in soccer league. How many are 12 years older? (Connexus) who knows?

  107. Physics

    A particle with a charge of -4.5 x 10-5 C, a mass of 2.5 x 10-7 kg, and a velocity of 7.0 x 10-5 m/s [E] is traveling perpendicularly through an external magnetic field such that the force of gravity is balanced by the magnetic force. Determine the

  108. maths

    If 2/3 part of a number is greater by 4 than 3/5 of it. then the number is

  109. algebra

    Remove the parentheses from the following expression, and combine like terms: 3(ax + b2 – c) + 2

  110. Social studies

    Which of these factors contribute to the income potential of a job? a. the education required to be successful at a job•• b. the amount of income a person wants to make at a job c. the special skills needed to do a job well•• d. the enjoyment a

  111. Social studies

    Why do you think the Canadian government is opposed to Quebec's becoming a separate nation? I don't want someone to tell me can you provide me with a source so I can find the answer

  112. maths

    The temperature was 41°c and it fell by 6°c, what is the temperature now

  113. maths

    2 Numbers are in the ratio 2:3. if 8 is added to both the numbers ,then the ratio becomes 3:4 . then the numbers are ?

  114. et

    which of the following statements is a true statement? A) if it is printed or posted on the web, then it is a fact B) websites must go through a validity checker before they can be posted on the internet C) experts constantly check everything on the

  115. Math

    Nine less than the product of 23 and Gail's age

  116. Algebra

    On a summer day in Cape Cod, the depth of the water at a dock was 4ft at low tide at 2:00 AM. At high tide 5 hours later, the heist of the water at the dock rose to 14 feet. Write a cosine function to model the height of the water at the dock x hours after

  117. math

    A committee of 5 is chosen from 6 teachers and 3 students and 7 others. Determine the number of ways of selecting the committee if it is to contain: (a)at least two teachers (b)no teacher nor student

  118. Random

    A room has five corners, one of the five has an angle is 179 degrees what would be the measure meant of the other angle if the sum of two of the unknown angles is 60 and the sum of the other two is 3 less than the sum of the first two. my first question

  119. English

    Which is greater_____ to human happiness, war or poverty? encumber encumbering encumbered encumbrance answer: encumbering

  120. Algebra

    Enterprise chargesa flat fee of $500 and an additional $2.45 per mile hertz charges a flat fee of $70 and an additional $1.25 per mile driven write an equation to represent the cost, y, of driving x miles with enterprise.

  121. Language Arts

    remember, you will create a research presentation about the experiences of Jewish individuals or communities living under Nazi occupation during World War II. You may choose another topic for your research presentation as long as it is related to the play

  122. Maths

    Cylinder A is eight time as tall as cylinder B, but the diameter of cylinder B is four times the diameter of the cylinder A. Which cylinder has larger volume? How many times as large ?

  123. Science

    Acceleration due to gravity on planet mercury 3.7m/s.what would the mass of a person weighing 637 n on mercury

  124. Physics

    I'm trying to find the relationship between electric field strength and distance from point charge as an equation. I found the equation cd = E/(c*c). c is the factor by which the distance changes and E is the field strength. Is the equation good enough?

  125. chemistry

    The rate law is : rate = k [NO2]^2. Write an equation for the overall reaction. Identify the intermediate. Which elementary reaction is the slow one? I've been looking in my book on how to do this but I can't find how. Also, could you please explain the

  126. Chemistry

    C (s) + S2 (g) = CS2 (g) . Kp=5.6 At equilibrium, P cs2 = 0.152 atm. Find P s2 How would I start this problem?

  127. Social Studies

    how do nearby businesses with similar products usually compete? A:offering deals and lower prices B:changing to different product types C:lowering the level of service to save costs D:establishing a minimum price for everyone to use

  128. ss

    Can someone check this answer? Haiti shares an island with which country???? A-el Salvador B-The diminocon republic C-Cuba D-The Bahamas I think it is b or c pls help :)

  129. Maths

    A square prism and square pyramid have the same base and the same surface area. Show that the slant height, l, of the pyramid is l=5/2 x s where s is the length of the base.

  130. Chemistry

    Determine the hydronium ion concentration in a solution that is 0.00042M HCL Answer in units of M.

  131. calculus

    Notice that the curve given by the parametric equations x=25−t^2 y=t^3−16t is symmetric about the x-axis. (If t gives us the point (x,y),then −t will give (x,−y)). At which x value is the tangent to this curve horizontal? x = ? At which t value is

  132. calc

    determine the intersection pints of the graphs of the equations y=x^3-4x y=-x-2 I dont understand this please show all work.

  133. World History

    Imagine you are a reporter conducting a unique interview. Moses, Jesus, and Muhammad are sitting around a table having lunch with you. You are asking them questions about their respective faiths to inform your readers about the world’s three major

  134. Pre calc quick question

    if a problem says f(x)=square root x^2-16; x less than or equal to -4. Find domain and range. to do this i set up the equation like x^2-16 less than or equal to -4. However by doing this I am runnning into complications findng domain and range. Am i doing

  135. hello reiny damon steve can you help me physics

    Find the Gravitational potential at a point on the earth's surface. Take mass of earth as 5.98*10^24kg, it's radius as 6.38*10^6m and G=6.67*10^-11Nm^2kg^-2. Plz i need sir damon and steve including reiny to show me step and solution plz

  136. math

    Find the surface area of a rectangle that has a width of 5 and a height of 7.

  137. math

    In a shower,there is 5cm of rainfall.find volume of water that falls on 1.8 hectares of ground.1 hectare is 10000m2 (ans 90cu m)?

  138. studies

    Why was inflation a problem after World War II?

  139. Math

    The area of a trapezoid is 720 cm square. The height is 10 cm. The two bases of the trapezoid are parallel. Find the length of each base, if one base is 3 times as long as the other.