# Determine the length and breadth of a rectangle if the length is 3cm less than twice the breadth, and the perimeter is 18

40,002 questions, page 180
1. ## Chemistry

Performing the same experiment described on your lab manual, a student used a 0.358 g sample of Alka-Seltzer and the mass of CO2 was found to be 0.102 g. Based on this result, answer the following questions: Determine the mass of NaHCO3 that produced the

asked by Jena on October 19, 2012
2. ## educational research

I so overwhelm and lost at the moment. Summarize and complete an annotated bibliography of at least ten (10) scholarly sources that pertain to your research topic. This annotated bibliography should be a minimum of five pages in length, excluding title and

asked by June on October 1, 2012

In the figure below, S is a small loudspeaker driven by an audio oscillator with a frequency that is varied from 1000 Hz to 2000 Hz, and D is a cylindrical pipe with two open ends and a length of 55.0 cm. The speed of sound in the air-filled pipe is 344

asked by kelsey on November 16, 2008
4. ## Physics

The ink drops have a radius of 18.0 μm and leave the nozzle and travel toward the paper at a velocity of 20.0 m/s . The drops pass through a charging unit that gives each drop a positive charge q by causing it to lose some electrons. The drops then pass

asked by Kyle on January 17, 2018
5. ## Physics

A 25.0-g metal cylinder is placed on a turntable, with its center 70 cm from the turntable's center. The coefficient of static friction between the cylinder and the turntable's surface is μs = 0.71. A thin, massless string of length 70 cm connects the

asked by Charlie on October 7, 2014
6. ## physics

im stuck on the assignment: is the potential energy of a marble at the top of a ramp the same as the kinetic energy of the marble at the bottom of the ramp. I don't know the co-efficient of friction of wood but our teacher has told us keywords, they are:

7. ## Math

The bottom of a shopping bag measures 8 inches by 10 inches. The bag has a height of 12 inches. How much paper is needed to make the bag? (1 point) 256 in2 296 in2 512 in2 ** 592 in2 A cube has a side length of x feet. Which expression represents the

asked by Rayleigh on March 14, 2016
8. ## geometry

A 45 degree arc of circle D has the same length as a 30 degree arc of circle E. what is the ratio of the radius of circle D to the radius of circle E?

asked by Kiana on May 21, 2013
9. ## algebra 2

you can make an open box from a piece of flat cardboard. First cut congruent squares from the four corners of the cardboard. Then fold and tape the sides. let x equal the side of each congruent squares as x increases so does the depth of the box the

asked by herry on October 29, 2011
10. ## math

If franco is ordering lunch with a drink,sandwich,and a salad.He has the choice of 3 drinks,2 sandwichs,4 salads how many possible lunches are there? Tamara has 4 times as many pages to read for her book report as maria.Tamara has 20 pages left to read.How

asked by allison on November 26, 2012
11. ## drbob222, math , algebra

Can you recheck this hopefully this time i did it correctly. Directions: Crafts. Rose's garden is in the shape of a trapezoid. If the height of the trapezoid is 16m, one base is 12m, and the area is 224m ^2, find the length of the other base. My answer:

asked by jasmine20 on December 19, 2006
12. ## physic

An aluminum rod is 10.0 cm long and a steel rod is 80.0 cm long when both rods are at a temperature of15 degrees cel. Both rods have the same diameter. The rods are joined end-to-end to form a rod 90.0 cm long. The coefficients of linear expansion of

asked by Paul on July 24, 2010
13. ## Science

One edge of a copper cube is carefully measured and found to be 2.162 cm. An atom of copper is a sphere 0.2560 nanometers in diameter. Assuming that the volume of the cube contains nothing but copper atoms, how many copper atoms are contained in the cube?

asked by Laurel on September 24, 2011
14. ## Science-Repost

Describe Earth's rotation in terms of its axis and length of time to rotate. Earth's axis has never pointed in the same direction. It slowly traces a circle every 26 000 years. The tilt of the earth's axis isn't usually pointing straight up. It traces a

asked by Sara on February 6, 2010
15. ## tough physics

A boy is spinning on a chair and holding a paper bag so that it is horizontal, and perpendicular to the axis of the rotation. What should be the angular velocity of the boy in radians/second so that the bottom of the bag breaks? Details and assumptions

asked by Steve on July 14, 2013
16. ## Physics

A 2.5 m rod of mass M= 4. kg is attached to a pivot .8m from the left end so that it can rotate vertically. At the left end of the rod is a small object with mass m=1.5kg. A spring with a spring constant k=90N/m is attached to the right end of the rod. The

asked by Brandon w on June 12, 2012

how do you find the isoperimetric quotient of an n sided figure? my side lengths are 5cm i have split it in to triangles so 360/n is the central angle then to work out area of singular triangle its 1/2 base times height height is something like tan 180/n

asked by Spirit on October 12, 2006
18. ## Geometry

Can anybody help me with this word problem? A homeowner, who loves math, decides to make a garden/patio area in the following way. She decides to make the gardening area, where she will plant roses bushes in the shape of an equilateral triangle having a

asked by Jonas on October 8, 2014
19. ## calculus

f(x)=−x3 −x2 +16x+16 1. Calculate f′(x). 2. Calculate f′′(x). 3. Find the x values such that f(x) = 0. Note: this can be done by factoring. 4. Find the stationary point/s. Note: a point requires x and y coordinates. 5. Determine the nature of

asked by R on December 20, 2016
20. ## Physics repost

A regulation volleyball court is L = 18.0 m long and a regulation volleyball net is d = 2.43 m high. A volleyball player strikes the ball a height h = 1.76 m directly above the back line, and the ball's initial velocity makes an angle q = 55° with respect

asked by Lindsay on November 8, 2007
21. ## Physics (Stress & Strain)

A steel bar has a rectangular cross section measuring 1.000cm by 2.500cm and is 8.100m in length. A load of 150000.000N causes the bar to extend 2.000mm. Calculate the stress and strain. Area = l*w = 1.000cm*2.500cm = 2.500cm = 0.025m = 0.025m*8.100m =

asked by Danny on June 24, 2013
22. ## Precalc

How do you know what quadrant these two are in? I'm having a little trouble determining. Can someone check if my answers are correct for all and help me fix it to make it right. 10.) The point is on the x-axis and 12 units to the left of the y-axis. My

asked by Josh on August 31, 2015
23. ## The practice of working with school age children

How should BMI (body mass index) be used in a child-care setting? A. To determine a body's amount of muscle B. To determine a need to grow taller quickly C. To signal if a person is overweight D. To identify muscle strength C.

asked by Amanda on October 29, 2014
24. ## geometry

The diagonals of a rectangle ABCD meet at O. If angle BOC is equal to 44 degree, find angle OAD.

asked by m.d. on August 3, 2011
25. ## geometry

The perimeter of a rectangle of two numbers. The sum of the numbers is 163, and their difference is 33. Write two equations that would be used to solve the system

asked by queen on October 23, 2011
26. ## 7th math

If the actual figure is a rectangle that is 120 meters by 400 meters, what are the dimensions of a scale drawing in centimeters?

asked by Anonymous on May 25, 2014
27. ## Math

You have 12 square tiles,each tile measures 1 foot on each side,how many non congruent rectangles can you make ?,each rectangle must use ll 12 tiles

asked by Tim on March 12, 2013
28. ## Math

A rectangle with vertices at (2,5), (7,5), (7,8) and (2,8) is revolved around the line y=5 to obtain a cylinder. What is the volume of the cylinder? Express your answer in terms of pi.

asked by Jacob on December 6, 2011
29. ## algebra

A gold ribbon is to be placed around the outside of each rectangle of the frame. Write a polynomial expression to represent the amount of ribbon needed.

asked by Samantha on March 31, 2015
30. ## geometry

A thin wire is formed into a rectangle with an area of 24 cm2. If it is reshaped so that the 6 cm side is 2 cm longer, how will the area change?

asked by kelly on September 27, 2010
31. ## math

In rectangle ACDE, AB=5cm, C=10cm, and BE=13cm (triangle within the rectange is BDE). What is the total area outside the triangle?

asked by Trish on May 4, 2012
32. ## Math

Everyday Ms. Twinkle walks around a park near her house. The park is in the shape of rectangle 2 mi long and 1 3/10 mi wide. How far does she walk?

asked by Krys on September 29, 2014
33. ## Math- Geometry

Given: Angle ABC is a right triangle with hypotenus AB D,E and F are midpts of the sides of the triangle Proof: a. CDEF is a rectangle b. EC is half of AB

asked by Lori on December 11, 2014
34. ## Math

Im helping my son to find the area of a rectangle that is 7 3/8 inches and 4 inches the height. I need to know how to convert the fraction into a whole number.

asked by Lisa on March 20, 2013
35. ## Math

On a grid draw and label and label an aquarium shaped like a rectangle prism with the volume of 8000 cubic in.

asked by Jaxon on May 14, 2015
36. ## ahsa math

hey need help with this asap you are given 12 feet of fencing to build a cage how many different rectangle can you build? WHICH WOULD YIELD THE MAXIMUM AREA

asked by steven on January 5, 2012
37. ## science

on a worksheet i have i found out the volume of the rectangle (34.2cm3) then it asks "If a block of H20 the mass would be..." i put 34.2g since that was the volume but not sure if im right?

asked by sabrina on October 13, 2010
38. ## geometry

each face of the cabinet 413S is in the shape of a rectangle. What is the volume of the Model 413S in cubic feet? dimensions are 24 by 72 by 18

asked by Ligia on March 15, 2016
39. ## electrochemistry

If I have 2- 1/2 reactions that are- O2(g)+4H(aq)+4e- -------2H2O and CyFe3+(aq) +e---------CyFe2+(aq) How do I determine the # of electrons transfered? In addition, if the electrons are on different sides of the equations how would I then determine the #

asked by Christie on November 15, 2009
40. ## Economics

Given the following TR and TC function of a firm: _ 0.9 10 5 3 1 22 0.5 2 3 2 TR  Q Q and TC  Q Q  Q a) Determine the level of P and Q maximize profit and b) Compute equilibrium profit or loss and determine the decision of the firm.

asked by Maru on December 1, 2015
41. ## math

Let f be he real-valued function defined by f(x)=sin^3x+sin^3|x| (a) find f'(x) for x>0 (b) find f'(x) for x

asked by Mariam on November 4, 2010
42. ## math

Let AB be a diameter of a circular track. Tom starts from point A running clockwise on the track. At the same time Jerry starts from Point B running counterclockwise on the track. Each person runs at a constant speed. They first meet after Tom has run 200

asked by al on April 26, 2010
43. ## Math

An open rectangular tank (no top) with volume 11 cubic meters has a square base. The base has side x m. Write an equation for the surface area of the tank as a function of the length x. Surface Area = ? b. The base costs 1.1 cents/square m and the sides

asked by Andrew on February 17, 2014
44. ## geometry/math

What is the height of a rectangle whose area is 40 square inches, and whose base is 8 inches??

asked by Ashley on January 18, 2010
45. ## math

The vertices of a parallelogram are A(x1, y1), B(x2, y2), C(x3, y3), and D(x4, y4). Which of the following must be true if parallelogram ABCD is proven to be a rectangle?

asked by kelli on January 14, 2019
46. ## math

The area of a rectangle is 45 square inches. One dimension is 5 inches. What is the perimeter?

asked by Sanaya on February 4, 2013
47. ## Algebra

The perimeter of a rectangle is 26 meters The short sides are (2x-6) The long sides are (x+3) What is the value of x?

asked by Anonymous on September 12, 2013
48. ## math

the slope of the longest side of a rectangle is 4/3. What is the slope of the shorter sides?

asked by chair12345678 on January 12, 2012

Write and simplify an expression for the perimeter of the rectangle. side A=x+6 Side B=4x-5. Thank you!

asked by CJ on September 12, 2010
50. ## Maths

In the rectangle OABC, M is the midpoint of OA and N is the midpoint of AB. OB meets MC at P and NC at Q. Show that QP=PQ=QR. Thanks in advance

asked by Edwas on March 3, 2018
51. ## geometry

Find the area of a rectangle that has one side measuring 10 cm. and a diagonal measuring 26 cm.

asked by marissa on February 14, 2011
52. ## Pre-Calc

A rectangle has an area represented by the expression x^2-7x-8 = a The shortest side can be represented as x - k What is the value of K?

asked by Anonymous on June 19, 2018
53. ## Geography

Rectangle ABCD AB parallel DC prove angle A congurent ANgle B

asked by rajput on October 19, 2016
54. ## Algebra1

Use an equality One side of a rectangle is 12 inches and the other is x. What value of x will make the perimeter at most 44 inches.

asked by sweets on April 17, 2011
55. ## Algebra

The perimeter of a rectangle is 26 meters The short sides are (2x-6) The long sides are (x+3) What is the value of x?

asked by Anonymous on September 12, 2013
56. ## Math

The area of the rectangle is 33 square feet. If its width is 5 1/4 feet, find its

asked by Anonymous on February 27, 2014
57. ## Algebra

How do you get the answer. If the width of the rectangle is 2 inches and the perimeter is 38 inches. I need to know the sum

asked by Anonymous on March 21, 2013
58. ## Geometry

Find the area. A rectangle with sides of lengths 4/5 foot and 1/2 foot

asked by Eddie on April 8, 2014
59. ## Math

if the perimeter of a rectangle is 120 units what is its area in square units

asked by Apple on April 19, 2016
60. ## geomerty

how many 2-inch squares fit inside a rectangle 6 inches by 8 inches

asked by dv on January 26, 2012
61. ## geometry circle

A 16 cm by 12 cm rectangle is inscribed in a circle.. find the radius of the circle. ~answer

asked by Barbie Lee on October 22, 2013
62. ## Physics

A ball (mass m = 250 g) on the end of an ideal string is moving in a circular motion as a conical pendulum. The length L of the string is 1.84 m and the angle with the vertical is 37 degrees. a) What is the magnitude of the torque (N m) exerted on the ball

asked by Joe on July 11, 2012
63. ## Physics

A ball (mass m = 250 g) on the end of an ideal string is moving in a circular motion as a conical pendulum. The length L of the string is 1.84 m and the angle with the vertical is 37 degrees. a) What is the magnitude of the torque (N m) exerted on the ball

asked by Joe on July 11, 2012
64. ## Calculus

Let (a, b) be any point on the graph of Prove that the area of the triangle formed by the tangent through (a, b) and the coordinate axes is 2. This is the solution from the solution manual The coordinates of the point are (a,1/a). The slope of the tangent

asked by Anonymous on February 11, 2018
65. ## Math

A box company produces two sizes of pizza boxes. The smaller box has a surface area of 260 square inches. The larger box has a length, width, and height that are twice those of the smaller box. What is the surface area of the larger box? Choices are: A.

asked by Mary - Help plz on May 25, 2011
66. ## Physics

A circular shop sign of mass 10kg is to be hung from the wall of the shop. The sign hangs from a light, rigid horizontal support of length 0.48m that is hinged to the wall at one end A. The other end B of the support is attached by a model string to a

asked by Anonymous on May 18, 2012
67. ## Algebra

Suppose you want to enclose a rectangular garden plot against a house using fencing on three sides, as shown at the left. Assume you have 50 ft. of fencing material and want to create a garden with an area of 150 ft². A. Let w = the width. Write an

asked by Sophia on December 1, 2015
68. ## math

The owner of a garden supply store wants to construct a fence to enclose a rectangular outdoor storage area adjacent to the store, using part of the side of the store (which is 260 feet long) for part of one of the sides. (See the figure below.) There are

asked by Ava on April 26, 2019
69. ## Math

7.) Old McDonald wants to build a fence around his farm. If the area of his farmland is 400 square meters, what would the perimeter of the fence be? 200 feet 20 feet 40 feet 80 feet(my answer) 8.) 8) A square has an area of 29 square units. Which is the

asked by 123bruh on February 16, 2017
70. ## Math

Q. Coles sleeping bag has four sides. The side with the zipper is parallel to the opposite side. None of the angles where the sides meet are right angles. The side opposite the zipper is shorter than the side with the zipper. The other two sides are the

asked by Abbey on May 28, 2015
71. ## Math

Niles and Bob sailed at the same time for the same length of time. Niles' sailboat traveled 16 miles at a speed of 8 mph, while Bob's motorboat traveled 24 miles at a speed of 12 mph. For how long were Niles and Bob traveling? A. 2 hours B. 3 hours C. 4

asked by Anything but anonymous, on November 20, 2018
72. ## physics

A 475 gram box is given a push and it then slides up and back down a ramp with a 35.0° incline. The coefficient of friction is 0.30. (a) Determine the rate of deceleration as the box slides up the ramp. (b) Determine the rate of acceleration as the box

asked by harry on February 20, 2014
73. ## MATH

Read the following statement: Line segment GH is congruent to line segment IJ. Which of the following is an equivalent statement? GH over bar congruent to IJ overbar GH over bar similar to IJ overbar GH over bar equal to IJ overbar GH over bar element of

asked by BOI on November 21, 2018

circle A has a raduis that is twice the length og the raduis of circle B. Which is an accurate statement about the relationship of these areas of circle A and B and y? a.the area of circle A is 4 times the area of circle B b. the area of circle A is twice

asked by Court on December 16, 2010
75. ## Geometry

3. A box company produces two sizes of pizza boxes. The smaller box has a surface area of 260 square inches. The larger box has a length, width, and height that are twice those of the smaller box. What is the surface area of the larger box? A. 520 square

asked by Mary on May 25, 2011
76. ## Algebra

A rectangular pool was 5 m longer than it was wide. When a brick walkway 1m wide was added around the pool, the area was increased by 36 m^2. Find the dimension of pool itself. Dimension of pool: Length= x Width= x-5 So I know the area= x(x-5) = x^2-5l And

asked by ? on May 8, 2018

Which has a greater resistivity? 1. A copper rod that is shaped like a rectangular prism with dimensions of 1cm x 1cm x 1000m 2. A copper rod that is shaped like a solid cylinder with diameter 1cm and length 1000m I think it should be the rectangular prism

asked by tyger2020 on February 12, 2018
78. ## statistics

The Deborah Heart Institute performs many open-heart surgery procedures. Recently research physicians at the Institute developed a new heart bypass procedure that they believe reduces the average length of recovery. The hospital board will not adopt the

asked by Walter on April 18, 2012
79. ## Math

The size to which a pumpkin grows while on the vine is probably problematic, as our current visiting POLY pumpkins demonstrate. What if we were watching a pumpkin on the vine grow over time and that its shape was totally spherical. Now for your five (5)

asked by Tho on April 20, 2013
80. ## Algebra

Trapezoid. Height is 16m, one base is 2 20m, and the area is 224 m what is the length of the other base? The dimensions of area are m^2, not m. I assume that your entry of "2" was a mistake, and that you meant 20m for one of the base lengths. Trapezoid

asked by Misty on July 5, 2007
81. ## physics

A gymnast with mass m1 = 47 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 118 kg and length L = 5 m. Each support is 1/3 of the way from each end. Initially the gymnast stands at the left end of the

asked by Anonymous on March 29, 2011
82. ## physics

A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.9 kg and the sign has a mass of ms = 15.3 kg. The length of the beam is L = 2.55 m. The sign is attached at the very end of the beam, but the horizontal wire holding up

asked by katie on May 7, 2018
83. ## Physics

A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.7 kg and the sign has a mass of ms = 17.4 kg. The length of the beam is L = 2.83 m. The sign is attached at the very end of the beam, but the horizontal wire holding up

asked by Anonymous on March 30, 2016
84. ## Math

Please Check My Answer: Find the probability that you throw a dart and land in the region labeled "G" Here is a link to the image: I can't place it in here, but if you google the question, the very first image that pops up (A square with different colors

asked by Harry on June 18, 2018
85. ## physics

A bead on a fixed ring and a spring A ring fixed to a support at the top is hanging vertically. A bead of mass m slides through the ring and is connected to the support through a spring of stiffness k as shown in the figure-1. The length of the unstretched

asked by arslan on December 29, 2011
86. ## Physics

Engineering 100 Homework Problem #1 Below is a diagram of a beam supported on the left end by a pin connection, and toward the right side by a simple fulcrum. A force F is applied to the far right end of the beam as shown. The uniform beam has mass, m,

asked by Jamie on September 27, 2011
87. ## physics

A loaded ore car has a mass of 935 kg and rolls on rails with negligible friction. It starts from rest and is pulled up a mine shaft by a cable connected to a winch. The shaft is inclined at 26.0° above the horizontal. The car accelerates uniformly to a

asked by Jessi on March 2, 2009
88. ## maths

A swimming pool has two identical sides in the shape of a trapezium. All other sides are rectangular. The length of the pool is 12m. The width of the pool is 4m. The depth of the pool is 2.1m at the deep end and 1.1m at the shallow end. Rafa fills the pool

asked by lissa on October 28, 2011
89. ## Physics

A 21.0-g metal cylinder is placed on a turntable, with its center 90 cm from the turntable's center. The coefficient of static friction between the cylinder and the turntable's surface is ìs = 0.84. A thin, massless string of length 90 cm connects the

asked by mymi on October 20, 2011
90. ## physics

A 21.0-g metal cylinder is placed on a turntable, with its center 85 cm from the turntable's center. The coefficient of static friction between the cylinder and the turntable's surface is ìs = 0.83. A thin, massless string of length 85 cm connects the

asked by Casey on February 17, 2013
91. ## Calculus-Aproximate Areas

A ball is thrown upward at time t = 9 seconds on planet Ubuntu, and its acceleration from time t=9 seconds to t=21 seconds is given by the function . a(t) = (3) / (t - 8) m/s^2 Use 4 time intervals of equal length to overestimate, and then underestimate,

asked by Sara on November 6, 2013
92. ## math

Use the formula S equals 2 left-parenthesis l w right-parenthesis plus 2 left-parenthesis l h right-parenthesis plus 2 left-parenthesis w h right-parenthesisto find the surface area of a rectangular prism with the following dimensions: length = 2 cm width

asked by kim on March 9, 2018
93. ## Calculus

Suppose a cylindrical can is manufactured with radius r. The manufacturing process makes the length r imprecise; r can be off by ±0.03 cm. The manufacturing process makes the height of the can precisely equal to three times the radius r (including any

asked by Steven on December 4, 2009
94. ## math

Suppose the length and the width of the sandbox are doubled. a. Find the percent of change in the perimeter. The percent of change in the perimeter is a % increase. b. Find the percent of change in the area. The percent of change in the area is a %

asked by uhh on November 29, 2018
95. ## Math

Choose the word "rectangle," "square," or "rhombus" to fill in the blank and make the statement true. (If none of the words can be used, then write "none.") A parallelogram is a __________ if and only if its diagonals are perpendicular bisectors of each

asked by Becca on October 29, 2009
96. ## ART & DESIGN

IN ART & DESIGN CAN YOU TELL ME WHAT A RECTANGLE WITH THE WORD "LINE" INSIDE IT MEANS? Since this is not my area of expertise, I searched Google under many different key words, but I couldn't find any applicable sources. Sorry that I could not help. Thanks

asked by JANE on September 7, 2006
97. ## Calc

The base of a solid is the unit circle x^2 + y^2 = 4, and its cross-sections perpendicular to the x-axis are rectangles of height 10. Find its volume. Here's my work: A for rectangle=lw A=10*sq(4-x) V= the integral from -4 to 4 of sq(4-x^2)*10dx But that

asked by Alice on February 1, 2017
98. ## Algebra

Find the measure of each line segment whose algabraic expressions is given when x= 5 and y=4. Does that mean I have to label the sides, like if there's an "x" on one side of a rectangle I should substitute a 5? I just need to check on this as there are

asked by Anonymous on September 15, 2007