Popular questions and responses by Sami
  1. Calculus

    Tony's blood pressure can be modelled using the function P(t)=1000(sin t)(e^-2t), where 0 ≤ t ≤ 2 minutes. His body is stabilized after reaching a high. What is the highest blood pressure(nearest whole number) reached?

    asked on July 21, 2020
  2. calculus

    consider the function y=(ax+b)/(cx+d), where a,b,c,and d, are constants, a,c cannot equal 0. determine the horizontal and vertical asymptotes of the graph

    asked on July 19, 2020
  3. Calculus

    Describe how you would use the second derivative to determine a local maximum or minimum.

    asked on July 19, 2020
  4. calculus

    For f(x) = 2x^3- − 3x^2 − 12x + 21, find where f'(x) = 0, and the intervals on which the function increases and decreases.

    asked on July 17, 2020
  5. Calculus

    Tony is picked up by an ambulance, which moves in a straight line with position given by s(t)=2t^3 - 9t^2 + 12t - 5 metres, where t is the time in seconds. Determine the time intervals where the ambulance's speed is increasing

    asked on July 22, 2020
  6. Calculus

    c) Knowing Tony is injured, they need to travel the shortest distance possible back to a road. They are located at (4,11), towards which road should they head and how far will they need to walk to reach this road? here's a picture of the previous

    asked on July 22, 2020
  7. physics

    A car moving with an initial speed v collides with a second stationary car that is 46.0 percent as massive. After the collision the first car moves in the same direction as before with a speed that is 37.7 percent of the original speed. Calculate the final

    asked on March 24, 2014
  8. Maths proportions

    1) Nine milk bottles contain 4.5 litres of milk between them.How much do five bottles hold? 2) A shopkeeper can buy 36 toys for $20.52. What will he pay for 120 toys? 3) Three men can build a wall in 10 hours. How many men would be needed to build the wall

    asked on August 22, 2015
  9. PHYSICS HELP!!!!!!!

    You walk 50 m to the north, then turn 60° to your right and walk another 45 m. How far are you from where you originally started?

    asked on March 1, 2012
  10. biology

    In a cross between a white-eyed female fruit fly and red-eyed male, what percent of the female offspring will have white eyes? (White eyes are X-linked, recessive)

    asked on August 17, 2016
  11. Math

    Two 6-sided dice are rolled at the same time. How many outcomes correspond to the event that the sum of the numbers is 5?

    asked on June 9, 2014
  12. English

    Which of the following is not an object of satire in "a contribution to the statistics'? A. The self importance of social studies B. The corruption of the powerful C. Thee pride of mankind D. The delusions of common people

    asked on November 15, 2016
  13. Math

    Point Y (-1,-3) is rotated 180° about the origin. What are the coordinates of it's image, point Y'. I keep getting (-1,-3) but that's not a choice. I'm not sure what I'm doing wrong, can someone help? These are the choices listed (-3,-1) (-3,1) (1,3)

    asked on November 1, 2016
  14. Geometry (Please check my work)

    A segment has endpoints M(6,15) and N(-3,9). The image of the segmen for a dilation with center (0,0), has endpoints M'(2,5)and N (-1,3). What is the scale factor of dilation? A. 2

    asked on November 8, 2016
  15. biology

    Could a man with type B blood and a woman with type AB blood produce a child with type O blood? Explain

    asked on August 17, 2016
  16. Physics

    A 60kg man standing on a stationary 40kg boat throws a 0.2kg ball with a velocity of m/s. Assuming there is no friction between the man and the boat, what is the speed of the boat after the man throws the ball?

    asked on March 2, 2016
  17. Maths-Proportions

    1) An aircraft flying at 500 km/h completes a journey in 8.4 h. How long would the journey take if it flew at a speed of 420 km/h? 2) Jackie can drive to work in 18 mins if he travels at an average speed of 35 m.p.h. How long will the journey take if she

    asked on August 22, 2015
  18. physics

    Three identical uniform meter sticks are placed on the floor. The first stick lies along the y axis from y = 0.320 m to y = 1.32 m. The second stick lies along the x axis from x = 0.330 m to x = 1.33 m. The third stick is positioned so that one end is on

    asked on March 21, 2014
  19. Algebra

    find the x and y intercepts: 3x - 2y = -12 i know for the x intercept, put y=0 in the equation,s olve for x. For the y intercept, do the reverse. But i still don't understand how to solve it. Its just majorly fustrating me. And i can't go to school and ask

    asked on October 21, 2010
  20. physics

    A positive point charge = 2.1×10−5 is fixed at the origin of coordinates, and a negative point charge = −5.4×10−6 is fixed to the axis at . abeer abdullah Part A Find the location of the place along the axis where the electric field due to these

    asked on March 6, 2010
  21. math

    I'm having trouble determining when you divide and when you multiply to solve a scientific notation problem. For example: Assume that there are 20,000 runners in the New York City marathon. Each runner runs a distance of 26 miles. If you add together the

    asked on July 18, 2018
  22. science

    I cannot figure out how to convert 35 atm to degrees fahrenheit. Could you help me please?

    asked on July 9, 2018
  23. Adobe Photoshop

    List the steps required to be able to view each font to the selected type? I cant find the answers for that.

    asked on September 24, 2017
  24. Chemistry

    When an electric current passes through water during the process of electrolysis, two gases are formed. One gas has a boiling point of -183 C and the other has a boiling point of -253 C. Has a physical change or chemical change occurred? Explain. I think

    asked on October 3, 2016
  25. Georgia History

    1. Which of the following describes the Puritans? A) didn't have much success as planters B) made Sunbury into a thriving port*** C) came from the backcountry of Virginia D) came from Pennsylvania by way of North Carolina 2. Georgia’s slave code was

    asked on September 17, 2016
  26. math

    You roll a number cube twice. Find the probability of the event in fraction form. -Rolling a 4 then an even number -Rolling a 3 then a 3 -Rolling a number less than 1 and then a number less than 2

    asked on May 21, 2016
  27. physics

    A positive charge of 0.0001258 C experiences a force of 0.3 N when located at a certain point. What is the electric field magnitude at that point? Answer in units of N/C.

    asked on February 3, 2016
  28. physics

    Three point charges, two positive and one negative, each having a magnitude of 30 µC are placed at the vertices of an equilateral triangle (43 cm on a side). What is the magnitude of the electrostatic force on one of the positive charges? The value of the

    asked on February 3, 2016
  29. physics

    How much positive charge is in 0.8 kg of neon? The atomic weight (20.1797 g) of neon contains Avogadro’s number of atoms, with each atom having 10 protons and 10 electrons. The elemental charge is 1.602 × 10−19 C and Avogadro’s number is 6.023 ×

    asked on January 28, 2016
  30. chemistry

    A gas has a mass compostion of 20.8% nitrogen, 25.8% oxygen, 28.4% carbon dioxide and 25 % hydrogen. Determine its average molecular weight.

    asked on January 25, 2016
  31. Maths Income Tax

    1) A man with an income of $7500 and allowance of $1800, paid $1824 in tax. What is the rate of taxation? 2) Mr Green earns $95 per week and has allowances of $ 2450. Mrs Patel earns $19400 per annum and has allowances of $3680. They both pay all their tax

    asked on August 29, 2015
  32. medical coding

    A patient is admitted to the hospital for chest pains due to tachycardia. While in the hospital, the patient was also treated for type 1 diabetes. Upon further review, the coder noted that the documentation and ekg didn, t provide further evidence of the

    asked on December 8, 2013
  33. Physics

    Review Conceptual Example 11 before attempting this problem. An empty capacitor is connected to a 9V battery and charged up. The capacitor is then disconnected from the battery, and a slab of dielectric material (k=3)is inserted between the plates. (a)

    asked on February 9, 2012
  34. Science

    Why does an ion have an electrical charge?

    asked on September 5, 2011
  35. help me!

    is -5 a real #? rational #? irrational #? whole #? integer? counting (natural) #?

    asked on April 13, 2011
  36. Algebra

    how do you find the slope that passes through the points (0,-4) and (3,-2)

    asked on January 21, 2010
  37. Social Studies

    what is the code of the Hummurrabi.? and if possible can i have examples?

    asked on September 15, 2009
  38. science

    Which family/group does the element neon belong to.

    asked on April 9, 2008
  39. Chem ques.

    How do I know if a molecule is polar or nonpolar?

    asked on November 25, 2007
  40. math

    How do I convert 35.2 ft^2 to cm^2 using dimensional analysis? ie, what are the steps when you have units squared?

    asked on March 10, 2019
  41. math

    When writing an expression, is it correct to write 15,000 - 583.33x or -583.33(x) + 15,000? I have seen both but I have a friend who insists one is the correct one.

    asked on June 6, 2018
  42. math

    I'm working on a problem where I was given a table and had to find the exponential equation of best fit. The table is about the number of views of videos. The equation is y = 12.0143(1.7498)^x I had to estimate the number of views after 2 weeks and that is

    asked on April 30, 2018
  43. math

    Write the equation of a line that goes through (5,3) and (2,7) I found the slope of the line to be -4/3 Then, I substituted one of the points in for x and y to be: y = -4/3x + b 3 = -4/3(5) + b 3 = -20/3 + b 3 + 20/3 = b This is where I am stuck == do I

    asked on March 26, 2018
  44. Math

    If I roll a die 6 times, how many 5's do I expect to get? I know if I rolled it one time I would have a 1 in 6 chance of getting a 5, but how do I determine how many I would expect to get if I roll it 6 times?

    asked on March 7, 2018
  45. physics

    A pilot of an aeroplane flying at 300km\hr wishes to release a package of mail at the right position so that it hits the spot. What angle (theta) should his line of sight to the target make the instant of release at 150 metre.

    asked on January 15, 2017
  46. economics

    A firm's total cost is Tc=40+100Q-420Q^2+30Q^3. Find the unit of production at which average variable cost at minimum.

    asked on December 27, 2016
  47. Math (please check my answer!!)

    What other information must be given in order to be able to prove the two triangles congruent by ASA? i.imgsafe(.)org/c64c59dad9.jpg 1. T=S 2. P=S 3. P=R

    asked on November 28, 2016
  48. chemistry

    A 9.35 gram of ring with it's volume of 0.654 cm3 is an alloy of gold and with density of gold and silver respectively 19.3 g/cm3 and 10.5 g/cm3 assume there is no change in volume when pure metals are mixed. The volume of gold is?

    asked on November 7, 2016
  49. Math

    So my teacher marked this 0/6 but only told me to correct 2 things. Can some one check over this? If I'm right I need to email my teacher.. Complete the two column proof. Given:

    asked on November 7, 2016
  50. History

    Which of the following is important when a primary scheduled as heavily front-loaded as it was in 2008? A. A clear stance on the issues B. The ability to raise money C. A comprehensive general election strategy D. A steady, slow building following with the

    asked on November 2, 2016
  51. Geometry (Please check my work)

    Find the image of O (-2,-1) after two reflections, first across the line y=-5, and then across the line x=1. I believe the answer should be (-1,-6) Can someone please confirm?

    asked on November 2, 2016
  52. Math

    Another question I'm a bit confused on.. What is the angle of the rotation about C the maps the solid figure to the dashed figured? tinypic(.)com/r/2utnvoo/9 Choices: 90°

    asked on November 1, 2016
  53. History

    What is the main reason some people believe there should not be any limits on presidential terms? A. There should be a monarch instead of a president. B. The people should decide how long a president can serve in a democracy.

    asked on October 31, 2016
  54. Algebra 1

    Simplify the difference (-7p^4+4p^3+6)-(3p^3-5p+3) I removed the parenthesis and changed the addition and subtraction signs to their opposites on the second set; -7p^4 + 4p^3 + 6 - 3p^3 + 5p - 3. When I combined the like terms, I was able to simplify the

    asked on October 26, 2016
  55. Language Arts

    Which of the following correctly revises the the sentence so that it is entirely in the active voice? A. It has been decided by the school that the regular teacher should not evaluate the class; instead, the assessment should be performed by a visiting

    asked on October 18, 2016
  56. Algebra 1

    Is this a polynomial? 15x – 12 + 4x I'm pretty sure it is a polynomial, am I right?

    asked on October 13, 2016
  57. Science

    What does Asimov predict will happen to earth in billions of years? a. it will be burned up by the sun b. its population will increase*** c. it will shrink slightly in size d. it will change position in the galaxy Am I correct?

    asked on October 12, 2016
  58. Algebra 1

    Identify the initial amount a and the growth factor b in the exponential function. f(t)=1.4^t A)a = 1, b = 0.4 B)a = 1.4, b = 0 C)a = 1.4, b = t D)a = 1, b = 1.4*** Is this correct? If I'm wrong can you please explain why, thanks! (=

    asked on September 29, 2016
  59. Math

    I have determine if these are area or volume simply based on looking at them without doing the calculations. Could you please explain how to do that? 1. pi(4 in)^3 is in the numerator 3 is in the denominator 2. 2pi(1.5m)^2 + 2pi(1.5m)(3m) 3.

    asked on September 2, 2016
  60. biology

    Albinism (lack of pigment) is caused by a recessive allele in humans. If normal parents have an albino child, what is the probability that their next child will be normal for pigment?

    asked on August 17, 2016
  61. esl

    change the underlined nouns to pronouns. We well give it to our childern.

    asked on May 13, 2016
  62. physics

    an inclined plane, which slopes at 37degree is used to raise a 10 kg object to a heghit of 4m if the efficency is 80% determine a,the load (t@ke sin 37=0.6,cos 37 =0.8) b,the cofficent of kinetic friction c,the effort force

    asked on April 5, 2016
  63. Math

    The espionage is use only an associative property to rewrite the expression: (mq) * n My teacher says the correct answer is m * (qn) but could the answer also be (nm) * q or m * (mq) or q * (mn)?

    asked on February 17, 2016
  64. Geometry

    I'm a little confused about what a Pythagorean Triple is. As long as your two legs are both whole numbers, isn't every one a triple?

    asked on February 11, 2016
  65. Math

    I just want to make sure I have done this correctly. (10a^3b)(3ab^2c^2) = 30a^4b^3c^2

    asked on February 11, 2016
  66. Math - Could Someone Check My Work?

    Could someone check my work please? Thank you! (14a^2b)(2ab^2c) = 28a^3b^3c (a^25)^7 = a^125 6x^6 ∙ 6x^6 = 36^12 (2x^2)^3 = 8x^6 (-2)0 = 1 30x^20/(6x^9 = 5x^11 4x^5 ∙ 6x^6 = 24x^11 (2x^4)^3 = 8x^12 -4^2 = -16 -(193)^0 = -1 (-193)0 = 1 (-5)2 = 25

    asked on February 10, 2016
  67. math

    What is the difference between B as in the longer base of a trapezoid and b as in base in terms of geometry?

    asked on February 10, 2016
  68. math

    Is -4 to the zero power still 1 since all numbers to the zero power are 1 or is it negative 1?

    asked on February 9, 2016
  69. physics

    An electric field of magnitude 3640 N/C is applied along the x axis. Calculate the electric flux through a rectangular plane 0.166 m wide and 0.72 m long if the plane is parallel to the yz plane. Answer in units of N · m2 /C. 435.05 N. m2/C 002 (part 2 of

    asked on February 9, 2016
  70. Math

    I have the following chart that I am supposed to find the percent increase in one step. The directions specifically say not to use a two step method. 10.5 12.5 14.9 17.7 21.1 25.1 So I divide 12.5 by 10.5, 14.9 by 12.5, etc. When I do this (and round) I

    asked on February 4, 2016
  71. Math

    Does linear growth have to add the exact same amount each period, so a constant amount each time such as 500, 500, 500, etc, or does it just have to be close each period, such as 125, 137, 145, 160, etc?

    asked on February 4, 2016
  72. Math

    I have the following chart that I am supposed to find the percent increase in one step. The directions specifically say not to use a two step method. 10.5 12.5 14.9 17.7 21.1 25.1 So I divide 12.5 by 10.5, 14.9 by 12.5, etc. When I do this (and round) I

    asked on February 4, 2016
  73. Math

    Does linear growth have to add the exact same amount, so a constant amount each time such as 500, 500, 500, etc, or does it just have to be close, such as 125, 137, 145, 160, etc?

    asked on February 4, 2016
  74. math

    Does linear growth have to add the exact same amount, so a constant amount, each time or does it just have to be close?

    asked on February 3, 2016
  75. Math

    I have the following chart that I am supposed to find the percent increase in one step, not using a two step method. 10.5 12.5 14.9 17.7 21.1 25.1 When I do this (and round) I get about 19% increase for each one. (we are supposed to round. Then I have

    asked on February 3, 2016
  76. Math

    I have a triangle with equal sides. Then a s cons triangle is put in the middle so I have four triangles. Triangles are continued to be put instead so I have more and more triangles. As more triangles are added in the same space, the size of them are

    asked on February 3, 2016
  77. physics

    Find the distance between the two electrons. The value of the Coulomb constant is 8.98755 × 109 N · m2 /C 2 and the acceleration of gravity is 9.81 m/s 2 . 1. 0.507424 m 2. 50.7424 m 3. 5.07424 km 4. 5.07424 m 5. 5.07424 cm can anybody help me please

    asked on February 2, 2016
  78. Pre-calculus

    Hooke's Law states that the distance a spring will stretch beyond its natural length varies directly with the force applied to the spring. A force of 12 pounds is needed to stretch a certain spring 9 inches beyond its natural length. Find a formula that

    asked on January 28, 2016
  79. Math

    Hooke's Law states that the distance a spring will stretch beyond its natural length varies directly with the force applied to the spring. A force of 12 pounds is needed to stretch a certain spring 9 inches beyond its natural length. Find a formula that

    asked on January 27, 2016
  80. math

    Is the only difference between a ratio and a rate in a ratio the units are the same so they cancel out and in a rate they are different so they don't cancel out and so you have to show them?

    asked on January 19, 2016
  81. chemistry

    How would your calculated %P2O5 value be affected if you had not used this blank solution

    asked on December 4, 2015
  82. physics

    Alice has a mass of 70.0 kg and her car has a mass of 1000.0 kg. Alice is sitting in parked car on the side of the road. The magnitude of the normal force exerted by the road on her car is? (use g = 9.81 m/s2)

    asked on November 8, 2015
  83. need help with thsi equation

    ZnSO4.xH2O(s) ---> ZnSO4(s)+xH2O(g)

    asked on September 28, 2015
  84. need to balance equation

    ZnSO4.xH2O(s) ---> ZnSO4(s)+xH2O(g)

    asked on September 28, 2015
  85. chemistry

    a 2.00g sample of zinc metal is added to a calorimeter containing 150g of nitric acid solution initially at 20.0 degrees celsius . The temperature of the solution increased to 28.0 degrees celsius . Calculate the delta H of the reaction assuming that the

    asked on June 20, 2015
  86. Math

    I really need help on this PLEASE a 5 man baseball team how would I find average? Would it be total hits divided by at bats or add up the 5 averages and divide by 5? Thank You - Please help me!

    asked on April 10, 2014
  87. Math

    For a 5 man baseball team how would I find the average? Would it be total hits divided by total at bats or add up 5 averages and divide by 5?

    asked on April 10, 2014
  88. math

    samantha has 28 and she gets 28 more how many would she have in all.

    asked on March 28, 2014
  89. physics

    A staging that weighs W staging supports a painter weighing 770 N. The reading on the left scale is 660 N and the reading on the right scale is 410 N. What is the weight of the staging? Answer in units of N

    asked on September 8, 2013
  90. physics

    An arrow is shot from a bow at 20.0 m/s at an angle of 65 degrees above the horizontal. The arrow leaves the bow at a height of 1.80 m. At what height will it strike a wall that is 10.0 m away? (Remember to connect the two motions of the arrow using time.)

    asked on September 5, 2013
  91. Physics

    Calculate the distance (in ) that Larry runs if he maintains an average speed of 8.9 for 1 hour.

    asked on October 2, 2012
  92. Physics

    Two small pith balls, each of mass m = 16.6 g, are suspended from the ceiling of the physics lab by 1.8 m long fine strings and are not moving. If the angle which each string makes with the vertical is è = 19°, and the charges on the two balls are equal,

    asked on June 6, 2012
  93. Intergration: Measurement (Math)

    I don't get it. I need to find out these conversions. 15,000 g= ____ kg 5,000 mL= ____ L 75 mL= ____ L 390 mL= ____ L 0.03 m= ____ mm 6 m= _____ mm 2.48 L= ______ mL 43.2 L= ______ mL 807 mL= _____ L 3,751 m= _____ km

    asked on May 14, 2012

    Determine the scalar product of A= 3.0i + 1.0j - 2.0k and B= 3.0i - 2.0j - 3.0k

    asked on March 1, 2012
  95. math

    how many feet in a dozen

    asked on February 24, 2012
  96. Physics

    The membrane that surrounds a certain type of living cell has a surface area of 2.13 x 10-9 m2 and a thickness of 1.94 x 10-8 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 6.4. (a) If the potential on

    asked on February 9, 2012
  97. math

    find equivalent fractions with a common denominator and order from least to greatest 3/7 ,1/9 ,2/3

    asked on December 15, 2011
  98. physics

    The temperature of 2.7 moles of an ideal gas is 471 K. How much work does the gas do in expanding isothermally to 3.7 times its initial volume?

    asked on December 7, 2011
  99. Physics

    When you take a bath, how many kilograms of hot water (50°C) must you mix with cold water (13°C) so that the temperature of the bath is 36°C? The total mass of water (hot plus cold) is 215kg. Ignore any heat flow between the water and its external

    asked on December 1, 2011
  100. Physics

    A solid object floats on ethyl alcohol, with 60.9% of the object's volume submerged. Find the density of the object.

    asked on December 1, 2011


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