# Holly

Newest questions and responses by Holly
1. ## astronomy

Earth is spinning at 1670 km/h at the equator. Use this number to find Earth’s equatorial diameter.

2. ## social studies

1.Which is an effect of deforestation? A. soil erosion B. air pollution C. water pollution------- D. earthquakes 2. Which of the following is a reason so many people have migrated from Middle America to other regions? A. They dislike the region's climate.

30. ## chem

Calculate ΔG° (in kJ/mol) for the following reaction at 1 atm and 25 °C: C2H6 (g) + O2 (g) → CO2 (g) + H2O (l) (unbalanced) ΔGf° C2H6 (g) = –32.89 kJ/mol; ΔGf° CO2 (g) = –394.4 kJ/mol; ΔGf° H2O (l) = –237.13 kJ/mol

31. ## Probability and statistics

Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial.n=22, x=18, p=0.85, q=.15

32. ## Math

Find the linear speed of a point that moves with constant speed in a circular motion if the point travels along the circle an arc length = 2178/23 kilometers in time t=11 seconds?

33. ## Art

1. Which of the following answer choices contains a metaphor? A. His skin was sandpaper** B. The sun sparkled like a diamond C. She wanted to be like the birds and fly away D. They felt free when they ran across the doors 2. What is a key characteristic of

34. ## Math

1. Which property is NOT a characteristic of a parallelogram? A. Opposite sides are not congruent B. All angles are congruent** C. Opposite sides are parallel D. Opposite angles are congruent

35. ## physics

A horizontal spring with k = 110 N/m has one end attached to the wall. A 290 g block is pushed onto the free end, compressing the spring by 0.160 m . The block is then released, and the spring launches it outward. Neglecting friction, what's its speed when

36. ## Algebra 2

Did I solve these right? 1. f(x)= -3x + 1 g(x)= -4x^2 + x + 2 Find g(f(x) ) -4(-3x+1)^2+(-3x+1)+2 -4(-3x+1)^2-3x+1+2 3-3x-4(-3x+1)^2 3-3x-4+24x-36x^2 =21x-36^2-1 2.f(x)= -2x + 1 g(x)= -3x^2 -x -1 Find (g /f)(x) -3x^2-x-1/-2x+1 3. f(x)=-x +2 g(x)= -4x2 + x

37. ## pychology

According to research led by Sarina Saturn, which of the following is predicted by variations of a particular gene on the third chromosome, which influences oxytocin functioning?

-0.5167 is this number rational or irrational ? Thank you

39. ## Algebra

Using two variables - A carpenter wants to cut a 24-foot board into two pieces so that one piece is 5 times as long as the other. How long should each piece be?

40. ## physics

A ball is thrown vertically upward from the edge of a cliff of height 131 m. The initial velocity is 77.7 m/s. how high is the cliff?

41. ## Pre-calculus help

I have two problems I am stuck on, if you could show me how to solve the problems it would be much appreciated. 1) Find sin 2x, cos 2x, and tan 2x from the given information. tan x = − 1/6, cos x > 0 sin 2x = cos 2x = tan 2x = 2) Find sin 2x, cos 2x, and

42. ## Delete Question

Hi! Is it possible to delete a question I asked since I got it answered? Thanks! Subject: Math Date: Monday, March 23, 2015 Time: 8:27

43. ## Math

Directions: Use the following matrix to perform the elementary row operations sequentially. A=[3 2 |8] [5 2 |12] 1.) (1/3) R1 From the original matrix 2.) -5R1+R R2 From matrix in question 1.

44. ## Chemistry

What is the molarity of an HNO3 solution if 24.1mL of a 0.250M Ba(OH)2 solution is needed to titrate a 15.0mL sample of the acid? Can you tell me the process to finding this answer?

45. ## Science

A sled and rider with a combined weight of 59 kg are at rest on the top of a hill 24 m high. (a) What is their total energy at the top of the hill? (b) Assuming there is no friction, what would the total energy be on sliding halfway down the hill?

46. ## algebra

A gym has an enrollment fee of $80 and a$25 fee per month of membership. Write an expression to represent the total cost of m months of membership?

47. ## Derivatives

Find derivative of y= x^3(5x-1)^4 I got y'= 2x(5x-1)^3 +16x^2+5x-1 is this right? If not what and where did I go wrong

48. ## Math

Outside temperature over a day can be modelled as a sinusoidal function. Suppose you know the high temperature for the day is 87 degrees and the low temperature of 63 degrees occurs at 5 AM. Assuming t is the number of hours since midnight, find an

49. ## Drama

How is 4.48 Psychosis by playwright Sarah Kane a postmodern drama?

52. ## Algebra

Assume the car can be purchased for 0% down for 60 months (in lieu of rebate). A car with a sticker price of $42,900 with factory and dealer rebates of$5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the

53. ## Public Speaking

Evaluating audience feedback to your speech presentation usually happens: A. before the speech. B. after the speech. C. during the speech. D. in the speech preparation

54. ## Physics

Can someone help with the following physics problem? This is the only one I'm having trouble solving. Thanks. A 3.6-m-long ladder leans against a frictionless wall as shown in the figure below. The coefficient of static friction between the ladder and the

55. ## Math

What is the multiplicative inverse of 6 1/7? My answer- 16

56. ## Math

The volume of the cylinder is 15 cubic inches. If all the dimensions are multiplied by 2.7 what is the new volume? My Answer- 295.245

57. ## Math

A triangular prism has a volume of 92 in.³ if all dimensions are multiplied by 1.6 what is the new volume?

58. ## Common Core State Exam

I need some tips on dong the best I could do on the common core state exam. Please do the best you can to give tips. And if you know a website that will help me study, please do give it to me. Thank you for all you support and help :)

59. ## accounting

Liz Marett is the chief financial officer for Fulton Restaurants. She delivered the following comments in a recent conference call with analysts that follow the company: "20X5 was another excellent year. Net income was a record setting \$10,000,000. Food

60. ## Human relations

A female doctor attempting to explain to her 27-year-old male patient that his severe acne can be cured with a specific drug, but the side effect of the drug might be that he will be temporarily bald.

61. ## Language Arts

Can someone tell me what the simple subject and simple predicates are in this sentence? Thanks Sports fans trade baseball, football, or basketball cards. a. sport fans/trade b. fans/or c. baseball/or d. fans/trade

62. ## pre cal

f(x)=2x^2+12x-6 what is the min or max value ?

63. ## Math Pre-Cal

When I am giving the point vertex of (1,-1) and another point of (2,2) and i need to put the answere in the form f(x)=ax^2+bx+c how would I go about doing that?

64. ## Physics

Friction is usually the killer of efficiency. How does a ramp relate to friction?

65. ## Physics

What is one advantage and one disadvantage of using a ramp? Explain in detail.

66. ## Physics

What affect does changing the mass of an object on a ramp have on the efficiency of the ramp? Explain.

67. ## Physics

Bryan tosses a 75.0 g rock into the lake. The rock leaves hus hand at a height of 175 cm above the ground travelling at 19.0 m/s. How high above the ground will the rock travel if it is accidentally thrown straight up? How high above the water will it

68. ## Physics

Bryan tosses a 75.0 g rock into the lake. the rock leaves hus hand at a height of 175 cm above the ground travelling at 19.0 m/s. How high above the ground will the rock travel if it us accidentally bryan tosses a 75.0 g rock into the lake. The rock leaves

69. ## Physics

Three objects with masses m1= 36.5 kg m2= 19.2 kg m3= 12.5 kg Are hanging from massless ropes that run over a frictionless pulleys. If the system is released from rest, what is the magnitude of the acceleration in m/s^2 of mass m1? ___________________ O O

70. ## Physics

Three objects with masses m1= 36.5 kg m2= 19.2 kg m3= 12.5 kg Are hanging from massless ropes that run over a frictionless pulleys. If the system is released from rest, what is the magnitude of the acceleration in m/s^2 of mass m1? ___________________ O O

71. ## Physics

An elevator motor provides 45.0 kW of power while lifting a 2000 kg elevator 35 m. If the elevator contains six passengers of the same mass and it takes 20.0 s to accomplish this task, determine the mass of each passenger. Assume the system is 83 %

72. ## Physics

A microwave rated at 1000 W heats a 500 g glass of water from 10 degrees C to 55 degrees C in 2 minutes. Determine the efficiency of the energy transformation.

73. ## Physics

A farmer drives a 0.100 kg iron spike with a 2.00 kg sledge hammer. The sledge hammer moves at a constant speed of 3.99 m/s until it comes to rest on the spike after each swing. Assuming all the energy is absorbed by the nail, and ignoring the work done by

74. ## Physics

A 599 g piece of silver at 150 degrees C is submerged in 1000 g of water at 5 degrees C to be cooled. Determine the final temperature of he silver and water given Heat capacity of water= 4.18 x 10^3 j/kg degrees C Heat capacity of silver= 2.49 x 10^2 j/kg

75. ## Physics

A mechanic uses a chain and block to lift a 875-kg engine 4.00 m to the top of the garage. The downward force in the chain over the 4.00 m distance is 5.00 x 10^4 N. How much useful work was done? Thannnkkks :)

76. ## Physics

A mechanic uses a chain and block to lift a 875-kg engine 4.00 m to the top of the garage. The downward force in the chain over the 4.00 m distance is 5.00 x 10^4 N. A) Calculate the work done in raising the motor B) How much useful work was done? C) What

77. ## physics

weight 240N/ area 2cm2=

78. ## Chem 101

In a fission reaction, uranium-235 bombarded with a neutron produces strontium-94, another small nucleus, and 3 neutrons. Write the nuclear equation for this reaction.

79. ## math

which expression is equivalent to 4*4*4*4*4*4*4*4? Debra has 2/3 of a pound of loose green tea leaves. If she wants to keep one-half of the tea at home and the other half at work, what fraction of a pound will she have at work? 7-5/7= what is (-7) to the

80. ## HSM/220

How do I increase a fixed sum by 50% properly?

81. ## Calculus Homework

Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 0.01cm thick to a hemispherical dome with a radius of 18 meters.

82. ## physics

A piece of wood with mass m = 2.8 kg is held in a vise sandwiched between two wooden jaws as shown in the figure below. A blow from a hammer drives a nail which exerts a force of 440 N on the wood. If the coefficient of static friction between the wood

83. ## HSM 220

I need help understanding the categorization of line-item budgets, program budgets, and functional budgets matrix for an organization? Can somebody help me understand where salaries go etc.??

I need help understanding whether salaries are put into all categories of a program budget,line-item budget,and a functional budget matrix?

85. ## Math with applications

Find the vertex of 1. F(x)=3(x-c)^2+1

86. ## Trigonometry

Find all solutions of 4(cos(x))**2-4 sin(x)-5=0 in the interval (6pi, 8pi) I tried to work it out and got: 4(cos**2x)-4cosx -9 = 0, but I can't figure out what cosx = from there to finish the problem.

87. ## Trigonometry

Find all solutions of 4 (cos (x)**2)-1=0 in the interval (6pi, 8pi). (Leave your answers in exact form and enter them as a comma-separated list.)

88. ## Trigonometry

Find all solutions of 4(sin(x)**2)-8cos (x) -8 = 0 in the interval (2pi, 4pi). (Leave your answers in exact form and enter them as a comma-separated list.)

89. ## trig

Find all solutions of cos (x) + 1/2 sec (x) = -3/2 in the interval (2pi, 4pi) (Leave your answers in exact form and enter them as a comma-separated list.)

90. ## Chemistry

Barium carbonate and nitric acid reacts in a double displacement reaction. One of products also dissociates and evolves carbon dioxide. Write the net ionic reaction including the proper use of phase labels for this solution run in aqueous solution. After

91. ## physics

A parallel-plate capacitor is formed from two 1.0{\rm cm} \times 1.0{\rm cm} electrodes spaced 2.8{\rm mm} apart. The electric field strength inside the capacitor is 1.0\times10^{6}{N/C}} part a What is the charge (in {\rm nC}) on positive electrode? part

92. ## Physics

What is the smallest radius of an unbanked (flat) track around which a motorcyclist can travel if her speed is 25 km/h and the coefficient of static friction between the tires and road is 0.28?

93. ## chemist geniuses

3. Describe the subatomic structure of the nucleus, including the structure of each nucleon. Draw a picture. Describe the forces that hold the nucleus together and draw them on your diagram. Explain how beta emission works.

94. ## chemistry

Describe what happens in a fission reaction. What is a commonly used isotope in a nuclear fission reactor? Describe how a fission nuclear reactor power plant works.

95. ## chemistry

Describe the subatomic structure of the nucleus, including the structure of each nucleon. Draw a picture. Describe the forces that hold the nucleus together and draw them on your diagram. Explain how beta emission works.

96. ## chemistry

2.The data in the table show the amount of a 500 g sample of sodium-24 over time. Make a graph of the data (remember to label all axes and title the graph). What is the half-life of sodium-24? Explain how you determined your answer. Sodium-24 decays by

97. ## STEVE HELP MATH

53.) 49x-2 = 7Ö 7 a. -5/4 b.5/4 c. 11/4 d. -11/4 79.) 10 E 3n-2 n=4 a. 14+17+20+...+32 b. 28+31+34+...+43 c. 10+13+16+...+28 d. 9+14+17+...+30 66. ln 1 √e a. -√e b. -1/2 c. 1/e d. 1/2 67. Solve: e3x = 8 a. ln 5 b. 3 ln 8 c. ln 8 3 d. ln 3 8

53.) 49x-2 = 7Ö 7 a. -5/4 b.5/4 c. 11/4 d. -11/4 79.) 10 E 3n-2 n=4 a. 14+17+20+...+32 b. 28+31+34+...+43 c. 10+13+16+...+28 d. 9+14+17+...+30 66. ln 1 √e a. -√e b. -1/2 c. 1/e d. 1/2 67. Solve: e3x = 8 a. ln 5 b. 3 ln 8 c. ln 8 3 d. ln 3 8

solve 125=(x^3)/ 1/3 ^-3 a. 7 b. 14 c. 15 d. 9