# allie

Popular questions and responses by allie
1. ## math

The cost of making a shirt is half of what the shirt normally sells for. Today, however, the shirt is on a 15% discount from its normal price. What is the current price of the shirt?

2. ## Physics

(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 23.2 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa. Pa (b) What force is exerted by the water on the window of an

3. ## math

The ratio of the number of Mimi’s Eminem cd’s to the number of Rita’s Eminem cd’s is 5:8. Rita has 18 more Eminem cd’s than Mimi. If Rita gives 22cd’s to Mimi, what will be the new ratio of the number of Mimi’s Eminem cd’s to Rita’s? i am

4. ## math

A student has passed 60 percent of the 20 quizzes he has written so far successfully. If the student writes 50 quizzes during the year, and passes 80 percent of the remaining quizzes successfully, what would his average percentile be? same with this one

5. ## Chemistry

An acetic acid buffer solution is required to have a pH of 5.27. You have a solution that contains 0.01 mol of acetic acid. How many moles of sodium acetate will you need to add to the solution? The pKa of acetic acid is 4.74. Show all calculations in your

6. ## geometry

Given: ∆AKL, AK = 9 m∠K = 90o m∠A = 60 ° Find: The perimeter of ∆AKL The area of ∆AKL for this one i got 81 for the perimeter side a 6 and side b is 12

7. ## Accounting

In its first month of operations, Giffin Company made three purchases of merchandise in the following sequence: (1) 260 units at \$5, (2) 360 units at \$7, and (3) 460 units at \$8. Assuming there are 160 units on hand at the end of the period, compute the

8. ## Maths

Given sec θ =(square root) 10 and tan θ = 3, determine the following, csc(90° − θ)

9. ## geometry

In ΔABC, m∠ACB = 90°, and m∠ACD = 45°. Find:AC, if CD =6√2 in. can u put answer and solution

10. ## math

If 8a−4b=20 and 4a−8b=4, then what is the value of a−b? i got 2

11. ## Geometry

Given: ABCD is a trapezoid, AB = CD, BK âŠ¥ AD (they are perpendicular , AK = 10, KD = 20 Find: BC AD I got that BC is 15 and AD is 35 so I got BC/AD=15/35 is this answer right? and is so can you add the answer and an explanation

12. ## math

Given: ΔKLM, KL = LM = 13in, KM = 10in. Find: The area of ΔKLM I got for the area 12√34 but its wrong :(

13. ## math

A rhombus has sides 10 cm long and an angle of 60 degrees. Find the distance between a pair of opposite sides. can u plz post the answer down with explanation. thanx, :)

14. ## Is it possible if you guys can check my algebra HW

two bags had 100 kilograms of sugar each. After taking out 3 times as much sugar from bag one than bag two , bag one had half as much sugar was bag two.How much sugar is left in each bag? i got 9 kilogram in bag on 1 and 0 grams in bag 2

15. ## Statistics

Scores on an SAT test have a mean of μ = 1026 and a standard deviation of σ = 209. Compute the margin of error of the sample mean for a random sample of 100 students.

16. ## Physics

Sweating is one of the main mechanisms with which the body dissipates heat. Sweat evaporates with a latent heat of 2430 kJ/kg at body temperature, and the body can produce as much as 1.3 kg of sweat per hour. If sweating were the only heat dissipation

17. ## physics

A daredevil on a motorcycle leaves the end of a ramp with a speed of 29.5 m/s as in the figure below. If his speed is 27.1 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance.

18. ## geometry

The lengths of the bases of the right trapezoid are 9 cm and 18 cm. The length of a longer leg is 15 cm. Find the area of the trapezoid.

19. ## Math

R varies jointly as S and the square of T. If R is 32.4 when S=0.2 and T=9, find R when S=0.5 and T=5. I believe the answer is R=25, could someone check this for me?

20. ## Physics

A high-speed photograph of a club hitting a golf ball is shown in the figure below. The club was in contact with a ball, initially at rest, for about 0.0037 s. If the ball has a mass of 55 g and leaves the head of the club with a speed of 2.7 102 ft/s,

21. ## OK History

I need someone to make sure my answers for my Oklahoma State History homework are correct. I put *** by my answers. If I am wrong, please explain why or help me find the right answer. Thanks in advance! 1. Indian Territory after the Civil War experienced

22. ## algebra

Find the coordinates of the points of intersection of the graph of y=13−x with the axes and compute the area of the right triangle formed by this line and coordinate axes. can u guys plz find answer + explain this problem is really hard and confusing 2

23. ## math

State whether the lines are parallel, perpendicular, or neither. Show your work.x–5y=103 and –2x=–206–10y i got neither is that right

24. ## Algebra

The data below represents the average score per game of the top 40 NBA players, rounded to the nearest whole number. Find the minimum, Q1, median, Q3, maximum for the data. Stem l leaf 1 l 55667777888888899 2 l 00000011123445566679 3 l 135

25. ## ochem

list from strongest acid to weakest acid HC(triple bond)CCH3 H2C=CH2 H3CNH2 CH4 H2O i thought the order went HC(triple)CCH3 H3CNH2 H2O H2C=CH2 CH4 but it comes out as wrong and i don't know why >

26. ## ocher

Estimate how many theoretical plates are needed to separate a mixture that has a mole fraction of B equal to 0.70 (70% B) in Figure 15.3.

27. ## math

It takes 18 electricians 35 days to wire a new housing subdivision. How many days would 28 electricians require to do the same job?

28. ## Math

An invoice of \$12,000 is dated April 5. The terms 5/10,n/30 are offered. Find the amount due if the discount is earned. Show your work.

29. ## Physics

Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 75 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 690 kcal have been burned at the end of the workout, what efficiency is

30. ## Physics

An ideal monatomic gas expands isothermally from 0.590 m3 to 1.25 m3 at a constant temperature of 670 K. If the initial pressure is 8.00 104 Pa. (a) Find the work done on the gas. Answer is in J (b) Find the thermal energy transfer Q. Answer is in J

31. ## Physics

A satellite has a mass of 99 kg and is located at 1.97 106 m above the surface of Earth. (a) What is the potential energy associated with the satellite at this location? Answer in J (b) What is the magnitude of the gravitational force on the satellite?

32. ## math

3(x+5)=7x−6 Give your answer as an improper fraction in its simplest form

33. ## Statistics

there is good evidence that moderate alcohol use improves health. some people think that red wine is better for your health than other alcoholic drinks. you have recruited 300 adults aged 45-65 who are willing to follow your orders about alcohol

34. ## math

Justin is 3 years older then Sam, and Justin’s age in 2 years will be twice what Sam’s age was 3 years ago. Find their present ages. i got 14 and 17 but the answer is wrong

35. ## Calculus

Suppose that you are to make a rectangular box with a square base from two different materials. The material for the top and four sides of the box costs \$1/ft2\$1/ft2; the material for the base costs \$2/ft2\$2/ft2. Find the dimensions of the box of greatest

36. ## English

"The Yellow Wallpaper" by Charlotte Perkins Gilman Can someone check to see if these are right? Much appreciated. I tried to include the quotes to make it a little easier. 1. The narrator's attitude towards the setting in lines 1-5 is best described as ? "

37. ## physics

A sprinter in a race can run 100m in 11.4 seconds. If it takes him 4.2 seconds to accelerate to top speed, what is the magnitude of his acceleration? Assume that he stays at his top speed from 4.2 seconds till the end. I do not understand which kinematics

38. ## math

how do I translate this sentence into an equation. 51 is the product of Malik's height and 3 . Use the variable m to represent Malik's height

39. ## science

I need an acrostic poem for the element Sodium?? puhleez?! THANX!!!

40. ## physics

the moon has a period of 27.3 days and a mean distance of 3.90x10^8 m from the center of the earth. find the period of a satellite in orbit 6.7x10^6 m from the center of earth. thank you!

41. ## Biology

can anyone tell me a little about MacArthur and Wilson's theory of island biogeography? I need to answer the question Describe a series of small habitats that exist within 10 to 20 kilometers of your house and which might be subject to MacArthur and

42. ## Physics

Clap your hands and estimate the energy and power released as sound waves. I know Kinetic energy= 1/2*m*v^2 and Power is KE/t but how do I find the velocity of the sound wave made from clapping my hands? and for the mass do I use the mass of my hands?

43. ## physics

A child and sled with a combined mass of 50.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed of 3.40 m/s at the bottom, what is the height of the hill?

44. ## math

Use the rational zero theorem, Descartes rule of signs, and the theorem on bounds as aids in finding all real and imaginary roots to the following equation: 4x^(3)-17x^(2)+16=0

45. ## PreCalc

Triangle ABC is given where m(angle)A=33 degrees, a=15 in., and the height, h, is 9 in. How many distinct triangles can be made with the given measurements? Explain your answer.

46. ## Honors Physical Science

A force of 12 N is applied to the handle of a screwdriver being used to pry off the lid of a paint can. As the force moves through a distance 0.3 m, the screwdriver does 3.2 J of work on the lid. What is the efficiency of the screwdriver? Show your work.

47. ## Hardy Weinberg: Biology

Can someone explain how to answer these questions given the different variables given? I have a test soon. Dr. Martin Brenner and his team have built a space ship which can travel at the speed of light (186,000 miles per second) and travel to parallel

48. ## Math

Point Q belongs to side AB of square ABCD. The distances from point Q to the diagonals of the square are 2 ft and 3 ft. Find the diagonal of the square.

49. ## math

The figures in (a) and (b) below are made up of semicircles and quarter circles; the figure in (c) shows a quarter of a circle in a square. Find the area and the perimeter of each figure in terms of π.

50. ## Math

Mr.Rivas bought a can of paint.He used 3/8 of it to paint a bookshelf. He used 1/4 of it to paint a wagon. He used some of it to paint a birdhouse and has 1/8 of paint left. How much did he use for the birdhouse

51. ## math

Two trucks are traveling in the same direction, one going twice as fast as the other. At the end of 6 hours they are 204 miles apart. How fast is each travelling? Can you guys show me the answer i got 68 and 146 but its wrong

52. ## Physics

You exert a force of 200 N at an angle of 15 degrees above horizontal to pull a 10 kg box across the floor at constant velocity. If the coefficient of kinetic friction between the box and the floor is 0.42, what is the acceleration of the box?

53. ## math

Mom has 2 apples and 3 bananas. Every morning for 5 days she is going to give her son an apple or a banana. What is the probability that the boy will get a banana at least two days in a row during these five days?

54. ## Maths

If sinθ = (square root) 3/2 , find the value of θ in degrees (0 < θ < 90°)

55. ## AP Chemistry

I'm so sorry to bother you guys again! Stuck on two other questions: 1. In the following equilibrium: NaCl(s) Na+(aq) + Cl–(aq), would adding more NaCl(s) increase the Cl-(aq) concentration? Explain why. My thoughts: I thought that it wouldn't increased

56. ## AP Chem

Hey guys! Stuck on some pH problems! Thanks so much in advanced: A) Calculate the pH of a 0.200 M solution of potassium acetate, KCH3CO2, in water at 25 °C. At this temperature, Ka = 1.76 × 10-5 for acetic acid. 1. 2.73 2. 5.45 3. 9.02 4. 9.94 5. 10.16

57. ## AP Chemistry

Hey guys stuck again! Bromine and chlorine dissolve in carbon tetrachloride and react to form BrCl: Br2 + Cl2--> 2BrCl (in CCl4) Under equilibrium conditions [Br2] = [Cl2] = 0.00430 M and [BrCl] = 0.0114 M. The addition of 0.100 moles of Br2 to exactly one

58. ## AP Chemistry

Hey guys! Stuck on another one: The reaction 2N2O(g) 2N2(g) + O2(g) has Kc = 3.5 × 10-18 at a particular temperature. If 0.20 mol of N2O is placed in a 1.00 liter container, what will be the N2 concentration when equilibrium is reached? 1. 4.4 × 10-9

59. ## AP Chemistry

Hey guys! I'm stuck on some study guide problems... (On the bottom of this, I put what answers make sense to me) A) A factor that affects the speed of heterogeneous reactions but not of homogeneous reactions is 1)nature of reactants 2)concentration of

60. ## physics

What potential difference is needed to stop an electron having an initial speed of 3.70x 105 m/s? Answer in volts

61. ## math

Karen collects local and foreign coins. of the coins in her collection, 1/4 are foreign coins. Of the foreign coins,2/5 are from mexico What fraction of the collections are foreign coins that are not from mexico?

62. ## chemistry

Write out the mechanism (using correct curved arrow notation) for the acid-catalyzed, cis-trans isomerization of maleic acid (into fumaric acid) If the electrophilic addition reaction of maleic acid with HCl had gone to completion what would be the

63. ## World History

For my research project, I need to choose an absolute monarch. I want to do one on a monarch/emperor/king from Vietnam because I have Vietnamese origins and am interested in learning more about its history. Is there any well known Vietnamese absolute

64. ## CHEMISTRY

Given that Mg(ClO3)2 decomposes into magnesium chloride and oxygen: A) Write a balanced equation for this reaction. I got Mg(ClO3)2 yields MgCl2 + 3 O2 Is that right? B) If 0.302 grams of O2 is lost from 1.890 grams of a mixture of Mg(ClO3)2 and an inert

65. ## Trig

Verify the identity. (secx + tanx)/(secx - tanx) = (1 + 2sinx + sin(^2)x)/cos(^2)x

66. ## Algebra

The stem-and-leaf plot represents the average monthly high temperatures in Tampa, Florida. What is the first quartile (Q1) of the temperatures? Round to the nearest tenth. Stem leaf 6 9 7 1267 8 14799 9 00

67. ## 9th gradae physical science

teh density of copper is 8.92 g/cm3. If you plotted the mass of copper in grams versus the volume in cubic centimeters, what would the slope of the line be?

68. ## Physics

A sample of blood is placed in a centrifuge of radius 20.0 cm. The mass of a red blood cell is 3.0 10−16 kg, and the magnitude of the force acting on it as it settles out of the plasma is 4.0 10−11 N. At how many revolutions per second should the

69. ## Physics

A 2.4 kg object attached to a horizontal string moves with constant speed in a circle of radius R on a frictionless horizontal surface. The kinetic energy of the object is 95 J and the tension in the string is 315 N. Find R.

70. ## Physics

The front 1.20 m of a 1,350-kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. (a) If a car traveling 22.0 m/s stops uniformly in 1.20 m, how long does the collision last? s (b) What is the magnitude of the average

71. ## physics

A skier of mass 72 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him 65 m up a 30° slope (assumed frictionless) at a constant speed of 2.7 m/s? (b) What power must a motor have to perform this task?

72. ## Calculus

What's the practical domain and range of this volume function: 4x^3-39x^2+93.5x

73. ## Chemistry

The reaction below shows the corrosion process of iron. Calculate E°cell for the corrosion process and state whether you would predict that this is a spontaneous or nonspontaneous process. 2 Fe (s) + O2 (g) + 4 H+ (aq) → 2 Fe2+ (aq) + 2 H2O (l)

74. ## chemistry

how much heat dows a 23.0g ice cube absorb as its temp increases from -17.4deg C to 0.0deg C?

75. ## AP Chemistry

The question asked... Calculate the solubility of calcium sulfate in grams solute per 100 grams solvent. Assume that the volume occupied by the solute in the solution in negligibly small. I solved and got 4.9 x 10 ^-3 mol/L... how do I put this in grams

76. ## Chemistry

About twenty radioisotopes with ultra-long half-lives, from 82 million years (244- Plutonium) to 6 million billion years (50-Vanadium) are found in the earth’s crust, yet no radioisotopes with half-lives less than 70 million years (146- Samarium) are

77. ## chemistry

Assume that the aluminum atoms can be represented as spheres, as shown in the drawing (Part C figure) . If each Al atom has a radius of 1.43 angstroms, what is the length of a side of the unit cell?

78. ## math

1. The equation, in general form, of the line that passes through the point (3,4) and is perpendicular to the line 5 x + 5 y + 9 = 0 is Ax + By + C = 0, where a=? b=? c=? 2.The equation of the line that goes through the points ( -9 ,-6 ) and ( -6 ,-3 ) can

79. ## Reimbursement Methodologies

You're the new director of a hospital health information management department. The chief financial officer has hired you for your expertise in health care reimbursement and needs to know how your department can help with reimburement. List the mot

80. ## science

wehat is the difference between RNA and DNA that allows them to be separated?

82. ## PreCalc

Solve the equation 2 cos(x)+1=0, 0

83. ## PreCalc

Show that sin(x+pi)=-sinx. Show all of your work.

84. ## Honors Physical Science

A small dog is trained to jump straight up a distance of 1.1 m. How much kinetic energy does the 7.7-kg dog need to jump this high? (The acceleration due to gravity is 9.8 m/s^2.) Show your work.

85. ## Honors Physical Science

A 410-g cylinder of brass is heated to 95.0°C and placed in a calorimeter containing 335 g of water at 25.0°C. The water is stirred, and its highest temperature is recorded as 32.0°C. From the thermal energy gained by the water, determine the specific

86. ## Chemistry

What is the charge on the lowest energy/most stable ions of K, Sc, S and Br?

87. ## science

can someone please help me ASAP I am stuck!! In 3–5 sentences, identify and describe the fossil evidence Wegener used to support the theories of continental drift and plate tectonics.

88. ## math

6x + 18 = 4x +1

89. ## Social Work

Need homework help Identify and briefly describe two (2) theoretical frameworks used for child welfare policies and programs.

90. ## Social Work

Need homework help Discuss the way problem definition is connected to policy formulation

91. ## Social Work

Need homework help Include a brief description of the four (4) key components of this framework (i.e., problem domain, life course development, policy responses, interventions)

92. ## Social Work

Need homework help Discuss the impact of the Tax Cut and Jobs Act (TCJA) on furthering income inequality and the potential impact on anti-poverty programs

93. ## Social Work

Need homework help Discuss the impact of income inequality on educational outcomes and policy

94. ## Social Work

Need help with this homework question Briefly describe how the Affordable Care Act (ACA) transformed the mental health system for children and youth. Discuss three themes that may improve the accessibility and quality of services for children

95. ## Social Work

I need to write an essay on the questions below. I’m having trouble thinking of modern policies that I could write about. Can anybody help give me some ideas and point me in the right direction? The English Poor Laws instituted the principle of "less

96. ## Chem

Am I doing this right? Find the concentration of the phosphate ion. 1.00 mL 210 micro molar. DI water added to 25 ml line. 1.00 mL phosphate solution * 1L/1000mL * 210 mol phosphate solution/1L solution * 1.0 *10^-6 mol/ 1 micromol * 1 mol PO4 3- / 1 mol

97. ## Physics

Using symmetry arguments, determine the direction of the force on q = +1.00 µC in Figure 17.33, given that qa = qb = +7.00 µC and qc = qd = -7.00 µC. Calculate the magnitude of the force on the charge q, given that the square is 10.0 cm on a side.

98. ## Physics

What is the force on the charge located at x = +8.00 cm in Figure 17.40(a) given that q = 1.00 nC and a = 7.50? (The positive direction is to the right.)

99. ## math

What is the value of x^2+y^2? if x+y=10 and x−y=8 i got 52(x=6, y=4) but its wrong