Newest questions and responses by Jonathan
  1. Biology

    Based on current evidence, what process most accurately describes how chloroplasts and mitochondria evolved? a.photophosphorylation b.endosymbiosis c.photosynthesis d.cellular respiration I personally think the answer is d.

    asked on March 5, 2019
  2. Algebra

    -2y + 6x + 2 = 0 y= -4 - 2x

    asked on November 12, 2018
  3. social studies

    Which of these were holy Hindu scriptures written by gurus to help connect people to heavenly forces?

    asked on November 4, 2018
  4. Math

    I need help on a quiz it is called mid unit review for 7th grade

    asked on September 20, 2018
  5. Using Geometry in Probability

    Allen and Bethany each arrive at a party at a random time between 1:00 and 2:00. Each stays for 15 minutes, then leaves. What is the probability that Allen and Bethany see each other at the party?

    asked on July 6, 2018
  6. physics

    A force F applied to an object of mass m causes it to move in a straight line a distance D during an interval of time T. The object gains kinetic energy K during this interval. In which of the following cases will the object gain the same kinetic energy K?

    asked on May 21, 2018
  7. Calculus

    Find d/dt integral[2 to x^2](e^x^3)dx

    asked on May 16, 2018
  8. Health

    How might a forest fire affect the health of people in nearby communities? (Select all that apply.) a. increased risks of asthma attacks b. increased risks of viral infections c. increased risks of bacterial infections d. increased risks of heart problems

    asked on May 14, 2018
  9. Health

    Why are routine screenings for cervical cancer important? (Select all that apply.) a. Cervical cancer screenings guarantee a longer life. b. Cervical cancer screenings can identify precancerous cells. c. They can identify cancer cells before symptoms

    asked on May 14, 2018
  10. Statistics

    What is a diagram that shows the frequency of data on a number line. I honestly don't know.

    asked on April 9, 2018
  11. math

    Find the area of the figure. Round to the nearest tenth if necessary. L(3,6), M(7,3), N(6,-1), J(2,-1), K(3,3)

    asked on April 5, 2018
  12. math

    Find the area of the rhombus. Round to the nearest tenth if necessary. M(0,4), N(3,0), P(0,-3), Q(-3,0)

    asked on April 4, 2018
  13. math

    Given the coordinates of the vertices of a quadrilateral, determine whether it is a square, a rectangle or a parallelogram. Then find the area of the quadrilateral. E(–7, –1), F(2, –1), G(–4, –8), H(5, –8)

    asked on April 4, 2018
  14. Math

    Solve the equation. 100^(5x+2)=1000^(4x-1)

    asked on March 14, 2018
  15. Math

    In a class of 20 students, 40% are boys. Twenty-five percent of the boys and 50% of the girls wear glasses. How many students wear glasses?

    asked on March 6, 2018
  16. Geometry

    10. Which of the following quadrilaterals always have diagonals that are congruent. Circle all that apply Parallelograms Rectangles Rhombi Squares Isosceles trapezoids 19. Given square ABCD: if the measure of angle ACB = (1x - 32) degrees, find the value

    asked on February 7, 2018
  17. Geometry

    10. Which of the following quadrilaterals always have diagonals that are congruent. Circle all that apply Parallelograms Rectangles Rhombi Squares Isosceles trapezoids 19. Given square ABCD: if the measure of angle ACB = (1x - 32) degrees, find the value

    asked on February 6, 2018
  18. PAVCS

    How many moles of gas are in a 20 liter scuba canister is 300k and pressure is 200 atm

    asked on January 26, 2018
  19. Social Studies

    1. In the AD 600s, North africa was conquered by A. Egyptians B. Arab Muslims C. Europeans D. Africans from south of the Sahara

    asked on November 1, 2017
  20. Physics

    a golf ball is shot from a tee which is located 18.0m above the green. The initial velocity of the golf ball is 42.0 m/s at an angle of 50.0 degrees above the horizontal. The ball behaves as an ideal projectile during its flight from the tee to the

    asked on October 16, 2017
  21. Maths

    A woman is seven times as old as her son. In five years time, she will be five times as old as him. How old are they now?

    asked on May 24, 2017
  22. 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?

    asked on May 8, 2017
  23. Chemistry

    Calculate the tota bond energy of ethanol from this info:(C_C=347,C_H=414,H_O=464,C_O=360)kJmol-1.Thanks for responding

    asked on March 18, 2017
  24. Biology

    Is medulla oblongata responsible for peristalsis?

    asked on March 11, 2017
  25. Physics

    Two perpendicular forces have a resultant of 13N.if one of the forces is 5N, the other force is?

    asked on March 11, 2017
  26. Biology

    What's the largest and most successful kingdom in the animal kingdom?

    asked on March 11, 2017
  27. Chemistry

    What's the resulting solution if 2000cm3 of 1MH2S04 is mixed with 20cm3 of 1M NaOH? i got 0.5M,acidic in concentration.

    asked on March 10, 2017
  28. Science

    When a silvery powdery substance was added to boiling beans,the beans get cooked quicker than normal. what may this be?

    asked on March 10, 2017
  29. Chemistry

    The relationship between velocity(U) of a gas molecules and their relative molecular mass(RAM) is?

    asked on March 10, 2017
  30. Chemistry

    what is the relative atomic mass of a silicon containing ore with 92% 28'Si,5%29'Si and 3%30'Si?

    asked on March 10, 2017
  31. social studies

    ways in which individuals can apply the concept of independence and self-reliance in their lives.

    asked on February 27, 2017
  32. maths

    express log9 in terms of log3 x and log3 y and solve for x and y simultaneously

    asked on January 21, 2017
  33. Math

    A spinner is divided into 8 equal sections. Each section is numbered 1-8. Find each probability for one spin.

    asked on January 19, 2017
  34. value

    A Biased Coin Is Such That The Head Is 4 Times More Likely To Show Up Than The Tail.What Is The Probability Of Obtaining A Head?

    asked on November 30, 2016
  35. Calculus

    A particle moves along the x-axis so that at any time t, measured in seconds, its position is given by s(t) = 5cos(t) − sin(3t), measured in feet. What is the acceleration of the particle at time t = π seconds?

    asked on November 29, 2016
  36. Calculus

    The position of a particle on the x-axis at time t, t > 0, is s(t) = ln(t) with t measured in seconds and s(t) measured in feet. What is the average velocity of the particle for 1 ≤ t ≤ e? a)1 b)e c)e-1 d)1/(e-1)

    asked on November 29, 2016
  37. Calculus

    The driver of a car traveling at 60 ft/sec suddenly applies the brakes. The position of the car is s(t) = 60t − 1.5t^2, t seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop? a)60

    asked on November 29, 2016
  38. Calculus

    A particle moves with velocity function v(t) = 2t^2 − 3t − 3, with v measured in feet per second and t measured in seconds. Find the acceleration of the particle at time t = 2 seconds. a)3/4 feet per second^2 b)-1 feet per second^2 c)32 feet per

    asked on November 29, 2016
  39. Calculus

    A particle is moving along the x-axis so that its position at t ≥ 0 is given by s(t)=(t)In(2t). Find the acceleration of the particle when the velocity is first zero. a)2e^2 b)2e c)e d)None of these Any help is greatly appreciated

    asked on November 29, 2016
  40. Math

    Jean has $280 in her savings account starting next week she will deposit $30 in her account every week is the amount of money in her account proportional to the number of weeks. Thank you for helping

    asked on October 16, 2016
  41. English Check

    The advice was meant for ____ A)you and i B)she and i C) you and me Hello i need help. My original answer was A)you and I. But then I started reading a book on English grammar and it says it should be C)she and I since they are subject pronouns.

    asked on September 1, 2016
  42. 10th Grade Math

    A history class is comprised of 6 female and 9 male students. If the instructor of the class randomly chooses 5 students from the class for an oral exam, what is the probability that 2 female students and 3 male students will be selected? Round your answer

    asked on August 30, 2016
  43. pre calc


    asked on July 31, 2016
  44. Math

    Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels 12 miles per hour slower than the westbound train. If the two trains are 400 miles apart after 2 hours, what is the rate of the eastbound train?

    asked on June 29, 2016
  45. math

    If 35% of people surveyed prefer orange to apples.Out of 475 people surveyed how many can be predicted to prefer orange

    asked on May 24, 2016
  46. Geometry

    Point $G$ is the midpoint of median $\overline{XM}$ of $\triangle XYZ$. Point $H$ is the midpoint of $\overline{XY}$, and point $T$ is the intersection of $\overline{HM}$ and $\overline{YG}$. Find the area of $\triangle MTG$ if $[XYZ] =150$.

    asked on April 21, 2016
  47. chemistry

    what volume of glycerine C3H8O3, with a density of 1.26 g/mL should be taken to obtain 2.50 ml of glycerine?

    asked on April 17, 2016
  48. Math

    Larry hit 24 home runs last season and 50 this season. What is the percent of increase in the number of home runs Larry hit from last season to this season?

    asked on April 4, 2016
  49. U.S History

    Don't You Push Me Down Words and Music by Woody Guthrie Well you can play with me And you can hold my hand. We can skip together Down to the Pretzel man You can wear my mommy's shoes Put on my daddy's hat You can even laugh at me But don't you push me

    asked on March 2, 2016
  50. physics

    calculate the electrostatic force between charges of -2.4 µC and +5.3 µC, placed 58cm apart in a vaccum.

    asked on February 29, 2016
  51. physics

    An artificial Earth satellite, of mass 3.00 × 10^3 kg, has an elliptical orbit, with a mean altitude of 500 km. (a) What is its mean value of gravitational potential energy while in orbit? (b) What is its mean value of orbital kinetic energy? (c) What is

    asked on February 29, 2016
  52. maths

    determine the thrust produced if 1.5 x 10^3 kg of gas exits the combustion chamber each second, with a speed of 4.00 x 10^3 m/s

    asked on February 29, 2016
  53. maths

    4x+16y:32 and 4x+y:17

    asked on February 13, 2016
  54. physics

    A capacitor,consisting of two metal plates each of area 50cm2 and space 0.2mm apart in air ,is connected across a 120V supply.Calculate (1)the energy stored..(2)the electric flux density and the potential gradient..

    asked on February 13, 2016
  55. Geometry

    A photographer enlarged a picture. If the width of the image is 5 inches and the width of the pre-image was x, what is the scale factor for the dilation in terms of x?

    asked on January 5, 2016
  56. gale math

    How to write 233.75 and 85.50 as a decimal number

    asked on December 27, 2015
  57. math

    meredith borrows $3600 to help pay for nurse's college. she will repay the loan by making equal blended payment of $625 each at the end of every six months. The interest rate is 11%/a, compounded semi annually.

    asked on December 14, 2015
  58. Math

    If 500 feet of fencing is used to enclose a rectangular plot of land that borders a river, what is the maximum area that can be enclosed? Answer to two decimal places.

    asked on December 12, 2015
  59. Ap physics 1

    The mass of a star in a galaxy far, far away, is 3.12 × 105 Earth masses, and the mean distance from the center of this star to the center of a planet with the same mass as our Earth is 2.46 × 108 km. Treating this planet and star as particles,with each

    asked on December 11, 2015
  60. Chemistry

    what is the wave length and type of light released when an electron absorbs 3.03 x10 -19 j of energy

    asked on November 4, 2015
  61. Science

    The spin of an object on its own axis is called

    asked on September 29, 2015
  62. physical science(elecrostatics)

    A(-9x10^-9 C) 20mm B(5x10^-9 C) (a)calculate the force between the charges (b)if A comes in contact with B Calculate the new charge on A and B

    asked on September 16, 2015
  63. Physics

    At an instant the block(M = 33kg) is moving down the slope. Angle between slope and floor = 33deg Force Pulling up the slope 49N at 38deg to the slope What is the acceleration of the block up the slope if the kinetic coefficient of friction is 0.5? My

    asked on August 22, 2015
  64. life orientation

    Define risk behavior and explain why it is important for teenagers to investigate and be knowledgeable about it.

    asked on August 21, 2015
  65. Math

    Show that the limit as h approaches 0 of (e^h-1 ) all over h = ln e = 1 using at least two numerical examples.

    asked on July 26, 2015
  66. Calculus

    Show that the limit as h approaches 0 of (e^h-1 ) all over h = ln e = 1 using at least two numerical examples.

    asked on July 26, 2015
  67. cal

    Show that the limit as h approaches 0 of (e^h-1 ) all over h = ln e = 1 using at least two numerical examples.

    asked on July 26, 2015
  68. Calculus

    Find the derivative of the following functions using the f prime of x = the limit as h approaches 0 of f(x+h) – f(x) all over h a)ƒ(x) = x2 + 5^x b)ƒ(x)= 1/2^x

    asked on July 26, 2015
  69. Calculus

    Givenƒ(x) = ex, verify that lim h->0 (e^x+h - e^h)/h + e^x and explain how this illustrates that ƒ′(x) = ln e • ƒ(x) = ƒ(x)

    asked on July 22, 2015
  70. biology help

    What are the biological terms of the following 1.A diagram that show the evolutionary history of plant groups 2.hoploid cell which grows into a plant

    asked on June 17, 2015
  71. physical science chemistry

    If 25 cm^3 of the potassium hydroxide (KOH) solution was used to neutralise 35cm^3 hydrochloric (HCl)solution, determine the concentration of the hydrochloric acid solution. Thanks

    asked on June 17, 2015
  72. science

    1. Descriptive statistics are widely used in qualitative research. When establishing if a population is normally distributed explain when the statistics of sample size, mean, mode, median, skewness and kurtosis will guide the researcher to make conclusions

    asked on May 30, 2015
  73. Life orietation.

    The powers of the police during a protest.

    asked on May 21, 2015
  74. Chemistry

    What is the change in entropy when 9.30 mL of liquid benzene (C6H6, d = 0.879 g/mL) is burned in the presence of 37.2 L of oxygen gas, measured at 298 K and 1 atm pressure? 2C6H6(l) + 15O2(g) → 12CO2(g) + 6H2O(l); ∆S° = –437.7 J/K at 298 K

    asked on April 11, 2015
  75. chemistry

    Determine the limiting reactant for this reaction if 3.027 grams of Aluminum are reacted with 60.00 mL of a solution that is 6 M KOH. Determine the amount of KAl(SO4)2•12 H2O that can be produced from this reaction. Molar mass Alum = 474 g/mol 2 Al (s) +

    asked on March 29, 2015
  76. Probability

    Consider 10 independent tosses of a biased coin with the probability of Heads at each toss equal to p, where 0

    asked on March 3, 2015
  77. math

    Michaela makes original stationary to give away as gifts. She likes to put a small bow in the corner of each card. She purchased a piece of ribbon that was 3 1/4 ft long. She can make each bow out of 1/3 ft of ribbon. Which equation would be used to show

    asked on January 16, 2015
  78. Math

    a pool 5 feet deep with a diameter of 40 feet is filled with water in 50 minutes. how long will it take to fill a pool that is 6 feet deep with a diameter of 36 feet?

    asked on January 8, 2015
  79. Calculus

    A 13 foot ladder is leaning against the house when it's base starts to slide away. By the time is 12 feet from the house the base is moving at the rate of 5 ft/sec. 1.How fast is the top of the ladder sliding down the wall at that moment? 2. At what rate

    asked on October 16, 2014
  80. algebra 2

    You have $25 to park your car in a garage in the city. The garage charges $4 for the first hour and $3 for each additional hour. Write an equation & determine the possible number of hours you can park. Help Again!

    asked on August 24, 2014
  81. Algebra

    Express as a single logarithm and, if possible, simplify: In x^2 + 3In x-In x^8 Thanks so much

    asked on August 2, 2014
  82. calcus

    A car travels 6 miles north and then turns right and travels 8 miles east to reach the garage. What is the straight line distance between the starting point and the garage?

    asked on June 26, 2014
  83. Chemistry

    When 100 mL of 0.60 M Na2CO3 (aq) is combined with 500 mL of 0.060 M Ba(NO3)2(aq), a precipitate is observed. What is the equilibrium concentration of Ba2+(aq) at 25°C?Ksp(BaCO3) = 8.1 x 10-9

    asked on April 24, 2014
  84. Physics

    A 2050 kg truck is traveling east through an intersection at 2.3 m/s when it is hit simultaneously from the side and the rear. (Some people have all the luck!) One car is a 1200 kg compact traveling north at 4.5 m/s. The other is a 1600 kg midsize

    asked on March 8, 2014
  85. Social studies

    the 18 amendment, when did it happen

    asked on February 25, 2014
  86. Science Help!

    3. Using coal for fuel releases pollution into the atmosphere. Why do people continue to use coal if it causes pollution? A. Using more coal reduces the amount of pollution from using oil B. Using coal is relatively inexpensive. C. Mining coal helps

    asked on February 3, 2014
  87. Help with science

    1. Aquaculture is the practice of farming sea organisms as a renewable food source. A. True B. False. 2. Selectively cutting down trees on an area of land can be best described as A. cutting down certain trees while leaving other trees standing B. cutting

    asked on February 3, 2014
  88. Science

    1. Aquaculture is the practice of farming sea organisms as a renewable food source. A. True B. False. 2. Selectively cutting down trees on an area of land can be best described as A. cutting down certain trees while leaving other trees standing B. cutting

    asked on February 3, 2014
  89. Physics

    A heavy wooden block rests on a flat table and a high-speed bullet is fired horizontally into the block, the bullet stopping in it. How far will the block slide before coming to a stop? The mass of the bullet is 9.5 g, the mass of the block is 10.5 kg, the

    asked on November 6, 2013
  90. physics

    HOW DO I DO THIS PLZ HELP I DON'T NEED U TO SOLVE I JUST NEED TO KNOW HOW Salmon often jump waterfalls to reach their breeding grounds. Starting 2.65 m from a waterfall 0.584 m in height, at what minimum speed must a salmon jumping at an angle of 25.2 ◦

    asked on October 28, 2013
  91. Physics

    The position of a toy locomotive moving on a straight track along the x-axis is given by the equation: x=t^4-6t^2+9t where x is in meters and t is in seconds. The net force on the locomotive is equal to zero when t is equal to Answer in units of s.

    asked on September 27, 2013
  92. Economics/Business

    Our large companies seem to be largely run by hired managers who work for salaries and who are not owner-entrepreneurs. How then do we get the profit motive into large companies?

    asked on September 15, 2013
  93. Capitalism

    In a capitalist economy, how can we cure poverty?

    asked on September 14, 2013
  94. Economics

    Who has an unlimited checking account with the US Treasurer that enables them to write all the checks they want without regard to having funds in the bank?

    asked on September 14, 2013
  95. chem

    determine the mass (g) of SO2 that is produced byt the reaction of 15g of CS2 according to the following equation: CS2 + 3O2 = CO2 + 2SO2

    asked on May 20, 2013
  96. math

    1) An antique dresser was purchased for $7500 in 2005. The dresser increases in value by 9% per year. Find the value of the dresser in 2025. 2) a) Find the slope of the secant to the curve f(x) = 0.25(4)^(x) - 2 between: p1) x=0 and x = 1 p2) x=0 and x=0.5

    asked on April 2, 2013
  97. math

    Give an example of a logarithmic equation that cannot be solved and explain why it cannot be solved. (3 marks)

    asked on March 17, 2013
  98. math

    The length of time that it takes for a pendulum to make one complete swing depends on the length of the pendulum. The time in seconds, T, is related to the length in meters, L, through the equation: T=2π√((L)/(9.8)) [it is all under square root] Q1:

    asked on March 13, 2013
  99. science

    CH3CH2CHO + 2Ag(NH3)2OH = CH3CH2COONH4+2Ag+H20+3NH3 yield of Ag obtained = 75% calculate minimum mass of propanal that must have been used to form 5g of silver

    asked on January 31, 2013
  100. gpa

    I'm a sophmore my current gpa from my freshman year came up to be a 1.2, we just finished our first semester my gpa from from first nine weeks and second nine weeks both were a 2.4, was wondering if i stay on track like this will I be able to pull my gpa

    asked on December 22, 2012


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