1. Chemistry

    What mass of glucose (C6H12O6) must dissolve in 400.0 g of ethanol to make a 1.60 m solution?

    asked by ELissa on March 9, 2017
  2. Analytical Chemistry

    How many mg of X is contained in 25 ml of a solution giving an absorbance of 0.250 at 400 nm when measured with a 1 cm cell ?

    asked by AREEJ on November 30, 2012
  3. physics

    please shelp me with this problem what is the stopping potential (V) if the wavelength of the incident light is 400 nm??

    asked by Liz frank on June 17, 2011
  4. chemistry

    how many grams of NaOH are contained in 250 mL of a 400 M sodium hydroxide solution

    asked by kelly on July 14, 2010
  5. intermediate algebra

    A certain bacteria doubles every day. If there were 400 in the original culture, how many would be present after 3 days?

    asked by xxxx on December 3, 2016
  6. math

    Need help figuring out what is the largest amount: 3000 c 400 pt 250 qt 500 gal

    asked by Paul on October 10, 2015
  7. Physics

    What is the peak current through a 400–W room heater that operates on 120–V AC power?

    asked by Ashton on September 14, 2014
  8. science

    A runner completes one full lap around a 400 meter track. What is her displacement?

    asked by abu on August 12, 2011
  9. SS

    HOW CHINA AND JAPAN DEVELOPED MODERN ECONOMIES(400 words,5 para)

    asked by help ASAP on February 15, 2018
  10. Math

    I need help with this math question: What percent of 400 is 12? Can you please write down the steps and the answer to this problem?

    asked by Lisa on November 23, 2008
  11. Chemistry

    ? g of glucose C6H12O6 must be dissolved in 400 g of water to give a solution that is 0.258 m.

    asked by Riley on April 7, 2008
  12. math

    Solve for time. Principle - $400 / Int 5% / simple interest $100

    asked by Anonymous on January 13, 2013
  13. physics

    Assume the resistance values are R1 = 2,800 Ω, R2 = 1,500 Ω, R3 = 4,400 Ω, and the battery emf is 1 = 1.3 V.

    asked by Anonymous on May 23, 2013
  14. Chemistry

    A 25.0-g sample of sodium hydroxide is dissolved in 400.mL of water. What is the concentration of the solution?

    asked by Mayra on May 30, 2016
  15. physics

    At the end of a race a runner decelerates from a velocity of 7.00 m/s at a rate of 0.400 m/s^2. (a) How far does she travel in the next 15.0 s

    asked by meme on September 5, 2012
  16. Chemistry

    how many grams of potassium hydroxide would need to be added to 400 mL of 0.150M HNO3 to raise its pH to 2.5

    asked by Ruth on March 17, 2015
  17. chemistry

    To make 10 mL of 25 mM sodium standard, what volume of 1 M NaCl stock should be used? 250 mL 2.5 mL 0.25 mL 0.5 mL None of these 400 mL

    asked by vivek on February 24, 2011
  18. Math

    Which of these lengths could be the sides of a triangle? 1) 20, 7, 14 2) 12, 22, 8 How would I determine this? When I tried it 1) 245=400 and 2) 208 = 484

    asked by Amy on October 12, 2010
  19. chemistry

    To make 10 mL of 25 mM sodium standard, what volume of 1 M NaCl stock should be used? 250 mL 2.5 mL 0.25 mL 0.5 mL None of these 400 mL

    asked by vivek on February 24, 2011
  20. math

    35. If b is postive integers less than 400 and more than 100, then how many integer pairs (a,b) satisify the equation a/b=2/9?

    asked by vincent on August 21, 2014
  21. math

    35. If b is positive integers less than 400 and more than 100, then how many integer pairs (a,b) satisfy the equation a/b=2/9?

    asked by vincent on August 22, 2014
  22. math

    Solve for time. Principle - $400 / Int 5% / simple interest $100

    asked by Anonymous on January 13, 2013
  23. trig

    evaluate the expression below at t=4 p=$400 and r=-9% round youre answer 2 decimal place

    asked by joe on October 7, 2011
  24. science

    the density of an object with a volume of 60.0 mL and a mass of 400.0g is___? a. 0.150g/mL b. 2.89g/mL c. 5.50 g/mL or d. 6.67 g/mL

    asked by erin on March 17, 2016
  25. Math

    The owners of the clinic invested $400,000. What is the return on investment? Is it adequate

    asked by Regina on November 17, 2015
  26. chem

    A solution that is formed by combining 600. mL of 0.20 M NaOH with 400. mL of 0.40 M HNO3 has an H+ concentration of

    asked by leona on June 19, 2010
  27. College Basic Math

    Round to nearest hundred? 483.9 a. 400 b. 484 c. 480 d. 500 I think its A

    asked by Tony on September 2, 2011
  28. statistics

    the average is 550 and sd is about 100, what percentage of these scores range 400 to 700

    asked by Maya on September 25, 2018
  29. chemistry

    how many grams of Copper (II) sulfate pentahydrate would you use to make 400.0 mL of .750 M solution?

    asked by chelsea on June 13, 2011
  30. math

    Monica deposits ​$400 into a savings account that has a simple interest rate of 4.1​%

    asked by vallery on November 19, 2016
  31. Science

    Find the average kinetic energy of a 70 kg runner who covers 400 m in 45s?

    asked by Anonymous on January 24, 2019
  32. math

    Find the unit rate. Run 400 meters in 1 min 32 s. Have no idea, please help.

    asked by sam on September 10, 2014
  33. Computer Science

    I need help with these assignments. "Write a program to read a list of exam scores (integers in the range 0 to 100) and to output the total number of grades and the number of grades in each letter-grade category (90 to 100 = A, 80 to 89 = B, 70 to 79 = C,

    asked by Jim on May 21, 2008
  34. Calculus (please help I really need to check this)

    Consider a window the shape of which is a rectangle of height h surmounted a triangle having a height T that is 1.3 times the width w of the rectangle. If the cross-sectional area is A, determine the dimensions of the window which minimize the perimeter.

    asked by Katrina on April 11, 2011
  35. Calculus (pleas help I really need to check this)

    Consider a window the shape of which is a rectangle of height h surmounted a triangle having a height T that is 1.3 times the width w of the rectangle. If the cross-sectional area is A, determine the dimensions of the window which minimize the perimeter.

    asked by Katrina on April 11, 2011
  36. Geometry

    The measures of 6 of the interior angles of a heptagon are: 120°, 150°, 135°, 170°, 90°, and 125°. What is the measure of the largest exterior angle? 90° 80° 75° 85°

    asked by dana on January 23, 2012
  37. Geometry

    The measures of 6 of the interior angles of a heptagon are: 120°, 150°, 135°, 170°, 90°, and 125°. What is the measure of the largest exterior angle? 90° 80° 75° 85°

    asked by dana on January 23, 2012
  38. us history

    what nonmilitary measures did president kennedy take to counter Soviet influence and to spead democracy around the world? (clashes in the cold war)

    asked by k on June 20, 2011
  39. To Mara; Re: algebra

    I accidentally deleted your post. Sorry. a 10 foot board is cut into two pieces. If one peace measures x, write an expression for the lenght of the other piece 10 - x = y

    asked by Ms. Sue on June 27, 2013
  40. math

    On a set of bluepints the scale is half an inch=4feet Find the actual lengthof a room that measures 2.8 inches on the blueprint

    asked by Gaby on December 11, 2008
  41. geometry

    Find the measure of the vertex angle of an isosceles triangle if either of the exterior angles formed by extending the base measures of 112

    asked by tina on December 1, 2011
  42. Statistics

    Which of the following is true about Standard Deviation? a. It is the maximum value minus the minimum value b. It a range of values c. It the average d. It a measure of spread e. It measures location

    asked by Beata Chmielewska on September 15, 2010
  43. Geometru

    The measures of 6 of the interior angles of a heptagon are: 120°, 150°, 135°, 170°, 90°, and 125°. What is the measure of the largest exterior angle?

    asked by Izabelle on June 12, 2013
  44. Math help PLEASE!!!!

    1. David drew triangle PQR as shown: If LQPR measures 135 degree, which statement is true for LPQR and LPRQ?

    asked by Anonymous on February 3, 2017
  45. Math ( i just need these two to finish my workshet

    Show the solutions of 1. If a = 4, b = 3, and A = 36o. 2. If a = 3, b = 4, and A = 48.59o Finding a "solution" means solving for all missing sides and angle measures in each triangle.)

    asked by Tony on July 28, 2012
  46. Geometry

    If the measures of the angles of a triangle are in the ratio 1:3:5 , what is the measure in degrees of the smallest angle ? a. 10 b. 20 c. 60 d. 180 thanks , and would be greatly appreciated if answered ASAP .

    asked by Chyna on February 28, 2012
  47. physics

    electricity is measured in kilowatts-hours, kW*h. this quantity can be converted to which other unit that measures energy? a.Pascals b.Joules c.Newtons d. Watts

    asked by jason on April 12, 2011
  48. Math

    A repeated-measures research study comparing two treatments with a set of 10 scores in each treatment will produce a t statistic with df = 19. True or False

    asked by Annie on December 15, 2017
  49. Pre-Calculus

    A surveyor measures the distance between buildings X and Y as 200 feet. The angle of elevation from the base of X to the top of Y is 25 degrees. What is the height of building Y?

    asked by Ericka on May 20, 2013
  50. Trigonometry

    If sinA=3/5 and cosB=5/13 and if A and B are measures of two angles in Quadrant I, find the exact value of the following functions. cotB = sin2A= 3)cos(5pi/6 + B) = tan(A - pi/4) =

    asked by snoopy on March 29, 2019
  51. Geometry

    one of the ancient store pyramids in egypt has a square base that measures 145m on each side. the height is 108m. What is the volume of the pyramid?

    asked by Anonymous on May 30, 2011
  52. marketing

    Matt owns a donut shop. He rents a space for $1500 a month and pays his only employee $300 a month. Matt can serve 1000 donuts each month. His variable cost per donut is $2. what price does Carlos need to charge in order to make a profit of $2000 per

    asked by Kay on December 9, 2006
  53. Physics

    The 3.80 kg cube in Fig. 15-45 has edge lengths d = 5.50 cm and is mounted on an axle through its center. A spring (k = 1300 N/m) connects the cube's upper corner to a rigid wall. Initially the spring is at its rest length. If the cube is rotated 2.00°

    asked by Anna on March 16, 2012
  54. geography

    1. What Argentine river has the same name as one of the states in the United States? The Colorado River 2. What landform is part of the northwest corner of Africa? mountains 3. What is the capital of Germany? Berlin 4. What natural boundary separates

    asked by Reed on March 18, 2012
  55. Physics

    The 3.80 kg cube in Fig. 15-45 has edge lengths d = 5.50 cm and is mounted on an axle through its center. A spring (k = 1300 N/m) connects the cube's upper corner to a rigid wall. Initially the spring is at its rest length. If the cube is rotated 2.00°

    asked by Anna on March 16, 2012
  56. Math

    1. Corina and Drew want to determine the height of a signpost that is next to their house. However, the signpost is too tall to measure. They decide to use their shadows and compare them to the shadow of the signpost. At 4:00 Pm, Corina measures Drew's

    asked by Jerald on October 30, 2013
  57. math

    setup an equation or expression to model the situation: a rectangle that would fit inside of the curve y=-x^2+8

    asked by sam on September 3, 2012
  58. geometry (maths)

    ABCD is a rectangle, in which BC=2AB. A point E lies on ray CD, such that CE=2BC. Prove that BE perpendicular AC.

    asked by math... on June 6, 2011
  59. geometry

    the lenght of a rectangle is fixed at 24cm. what withs will make the perometer greater than 76cm

    asked by Anonymous on April 16, 2010
  60. Math

    into a rectangle could make two, two could do four in 3 would be 6 and so on. The question is: Describe how to find each "next number" of rectangles, without drawing the figure:

    asked by Micaela on February 23, 2011
  61. math

    Find the perimeter of the rectangle. The other portion is a square. _______________ |8 sq | | | |______________] There is a vertical line on the 8 sq.

    asked by nisrin on January 5, 2014
  62. college

    The width of a rectangle is fixed at 16cm. What lengths will make the perimeter greater than 84cm?

    asked by Terri on November 28, 2009
  63. Algebra (maths)

    Please help: The length of a rectangle is 5m greater than twice its width, and its area is 33m^2 (the m is squared). Find the dimensions.

    asked by Squid on March 19, 2012
  64. mathematics

    ABCD is a rectangle, in which BC=2AB. A point E lies on ray CD, such that CE=2BC. Prove that BE perpindicular AC

    asked by math... on June 6, 2011
  65. Algebra

    Need help!! Please help me figure this out What is the length of 7ft more than twice the width and an area of the rectangle is 99ft^2. Find the dimension?

    asked by Mari on August 11, 2014
  66. Linear Relationships

    Use the Distributive Property to write two expressions, that show two different ways to compute the area of each rectangle. a. 6,4:14 b. 3:5,5

    asked by Alexis on September 2, 2008
  67. math

    if the area of the rectangle is 256x^4y^4-169c^4y^4 dm find the length if its worth (16x^2y^2) dm ?? Thankss :)

    asked by Camz on July 30, 2015
  68. Algerbra

    how much will it cost to carpet a rectangle room measuring 11m by 23m , if carpeting costs $33.00

    asked by Anonymous on January 20, 2014
  69. maths

    The area of a rectangle is 60 cm squared and its perimeter is 38cm. Find the length and width of a lectangle

    asked by benjamin on May 27, 2016
  70. MATH

    The length of a rectangle is 13 inches greater than its width,its perimeter is 8 feet.Find its dimension

    asked by RUSTOM on January 16, 2015
  71. Math

    A rectangle has dimensions 4 ft by 6 ft. Show that if the length and width are doubled, the area is 4 times as large.

    asked by Lori on April 11, 2015
  72. math

    THe lenght of a rectangler is 3m more than its width .If its area its 54metres carre ,find the dimensions of the rectangle?

    asked by melissa on July 17, 2009
  73. Geometry

    two perpendicular lines with the equations y=1/3x+9 and y=mx-3 contain the consecutive sides of a rectangle. What is the value of mx in the 2nd linear question.

    asked by monique on March 25, 2012
  74. Algebra

    Area of rectangle is 40m squared it has a length that is 2m less than 3 times its width what are the dimensions of retangle

    asked by Steph on March 21, 2013
  75. Math

    Find the dimensions of a rectangle of maximum size that will fit into a half circle of radius 27

    asked by Haris on March 16, 2014
  76. Math- Calculus

    find the dimensions of a rectangle of maximum size that will fit into a half circle of radius 30 cm.

    asked by John on March 24, 2013
  77. ART

    I have a 14k thimble with a SC mark inside a rectangle and a anchor next to it. Does anybody knows about this markings? I'll appreciate if you give me some info. Thank you.

    asked by CARMEN on May 25, 2010
  78. PRECALCULUS

    A rectangle has an area of 18 m2. Find a function that models its perimeter P in terms of the length x of one of its sides.

    asked by Anonymous on September 9, 2014
  79. algebra

    The width of a rectangle is fixed at 11cm. What lengths make the permeter greater than 96m?

    asked by Janet on July 5, 2010
  80. maths

    Find length of diagonal of rectangle whose adjacent sides are 30cm and 16cm.tell answer

    asked by shikha on July 26, 2016
  81. Math

    the area of a rectangle is 65yd^2 the length is 3yd less than double the width. Find the dimensions

    asked by Celeste on December 22, 2013
  82. Albegra word problem

    PLEASE HELP!!!!! The length of a rectangle is fixed at 19cm what widths will make the perimeter greater than 70cm

    asked by PJ on October 17, 2008
  83. math

    what is the dimension of a rectangle whose perimeter is 228 and the length isf 42 feet longer that it is wide?

    asked by Anonymous on June 28, 2010
  84. Math need help

    y= sqrt(81-x^2) What length and width should the rectangle have so that its area is a maximum? (smaller value) (larger value) I have no clue how to do this, so if someone could please help! thank you

    asked by Angelina on March 11, 2012
  85. algebra

    What is the area of the largest rectangle with lower base on the x-axis and upper vertices on the curve y = 27 - x2

    asked by anonymous on January 19, 2015
  86. Perimeter

    A rectangle has a perimeter of 12m. If each side is a whole number of meters, what are the possible dimensions for the length and width?

    asked by Jackie on February 8, 2012
  87. donwoody

    A football field forms a rectangle. 120yd long 53yd find the perimeter

    asked by maria on March 15, 2012
  88. Math

    a rectangle is 8 ft at the top and on the side its 4.2ft i got 24.4ft for the perimeter and 33.6ft for the area is that corect?

    asked by Olivia on March 9, 2011
  89. algebra

    The width of a rectangle is fixed at 30cm. What lengths will make the perimeter grater than 82cm.?

    asked by Jackie on August 20, 2010
  90. math

    Find the perimeter of the rectangle. The other portion is a square. _________________ |8sq.| | | | | |____|___________]

    asked by nisrin on January 5, 2014
  91. math

    Find the perimeter of the rectangle. The other portion is a square. _________________ |8sq.| | | | | |____|___________]

    asked by nisrin on January 5, 2014
  92. geometry

    ABCD is a rectangle. All rectangles have congruent diagonals. Which of the following is valid based on deductive reasoning?

    asked by shelley on June 15, 2016
  93. Algebra

    the length of a rectangle is fixed at 16cm what lengths will make the premiter greater than 82cm

    asked by Anonymous on April 14, 2012
  94. Math

    Use table to give answer to the area of a rectangle 3.85m long and 2.37m wide

    asked by Destiny on January 8, 2019
  95. algebra

    the length of a rectangle is fixed at 23cm what lengths will make the premiter greater than 72cm

    asked by dede on April 14, 2012
  96. calculus

    Determine the largest rectangle that can be inscribed inside the cavities of the two curves: y = –2(x – 6)2 & y = 6x2 –12*Tx – 128 + 6*T2

    asked by Alex on December 16, 2012
  97. Math 116

    The width of a rectangle is is fixed at 23cm what lenths will make the permeter greater then 94cm?

    asked by Taffany on June 6, 2010
  98. algebra

    The area of the rectangle below is 30 feet squared. What is the value of x to the nearest tenth of a foot? x+1=width x-1=height

    asked by jaay on May 19, 2014
  99. calculus

    Find the maximum value of the function f(x,y) = 9x2−9xy+y3 on the closed rectangle whose corners are the points (1,1), (1,−1), (−1,1) and (−1,−1)

    asked by Calculus on October 10, 2015
  100. Rectangles

    The width of a rectangle is fixed at 18cm. What lengths will make the perimeter greater then 74cm?

    asked by Amber on January 31, 2010