# Alicia

Newest questions and responses by Alicia
1. ## math

The radius of a spherical ball is measured at r = 50 cm. Estimate the maximum error in the volume and surface area if r is accurate to within 0.1 cm. (Round your answers to three decimal places.)

2. ## Math

12 1/9 + 10 2/3

3. ## biology

Identify and explain examples of monomers and polymers in carbohydrates, proteins, and nucleic acids.

4. ## Math

There is a school of 850 pupils 3/5 of them are girls how many girls are there

5. ## Physics

spring with a force constant of 111 Nm is attached to the ceiling. When an unknown mass is attached it pulls the spring down 0.340m to its equilibrium position. The mass is then pulled 9cm below its equilibrium position and oscillations back and forth.

6. ## Algebra

8. A balance of \$5,500.00 principal earns 3% interest, compounded annually. After 5 years, what is the balance in the account? 9. A car costs \$25,000 and depreciates in value by 15% each year. How much will the tractor be worth after 4 years?

7. ## Math

For the discrete random variable X, the probability distribution is given by P(X=x)= kx x=1,2,3,4,5 =k(10-x) x=6,7,8,9 Find the value of the constant k E(X) I am lost , it is the bonus question in my homework on random variables so it must be hard. Many

8. ## Algebra

Suppose that the x-intercepts of the graph of y=f(x) are -8 and 1. What are the x-intercepts of the graph of y=f(x+4)?

9. ## help

In “who knows if the moon’s,” the speaker imagines traveling somewhere. Where does he imagine traveling? to Earth from the moon to a nearby garden to the moon from Earth to a city in the sky thx

10. ## help

Draw and use a tape diagram to model and solve the problem below. In a soccer league, the ratio of boys to girls is 4 to 6. There are a total of 50 players in the soccer league. Determine how many girls play in the soccer league. A. 10 B. 20 C. 50 D. 30

If x = 2.5, 5x = ____. (Only input decimals such as 12.7 as the answer.) Answer for Blank 1:

Zoya asked the students of her class their baseball scores and recorded the scores in the table shown below: Baseball Scores Score Number of Students 0 1 1 2 2 5 3 3 4 6 5 7 6 9 Based on the table, what is the mean baseball score? 2.5 2.9 3.5****** 4.1

13. ## Math

18. Kim deposited \$1422 in a savings account. How much would she have in the account after 5 years at an annual simple interest rate of 3%.

14. ## Math

In 2010 there were 2575 students at ECC.  In 2013 there were 3090 students.  For the units use student increase or student decrease, rounded to the nearest whole, and percent increase or percent decrease, rounded to the nearest 10th, in the answer boxes

15. ## Math

For the first tour on Monday, a museum sells 4 child tickets and 8 adult tickets for \$128. For the second tour the museum sells 6 adult tickets for \$72. Find the price of one child ticket and the price of one adult ticket

16. ## Physics

A 30 kg child sits in a swing supported by two chains, each 1.4 m long. (a) If the tension in each chain at the lowest point is 265 N, find the child’s speed at the lowest point. (Neglect the mass of the seat.) Answer in units of m/s. (b) Find the force

17. ## physics

A pendulum clock has a pendulum shaft made of aluminum which has a coefficient of linear expansion of 24.0*10^-6K^-1. At 22 degrees celsius the period of the swing of the pendulum is 1.00seconds. If the temperature is reduced is reduced by 0.625°C every

18. ## history

What was the significance of the Supreme Court's ruling in the Marbury vs. Madison case? The ruling determined that Congress could act against the president if it wished. The ruling determined that the Supreme Court was more powerful than the president.***

19. ## Math

I need two 12x23 feet of carpet for my basement at \$6.00 per square foot. How much will this cost?

20. ## ENGLISH

What is the infinitive phrase in the following sentences? Tell whether it is used as a noun, adj, or adverb. 1. Early Bostonians STAGED THE BOSTON TEA PARTY TO PROTEST TAXATION WITHOUT REPRESENTATION. 2. TO PROTECT THEIR COMFORTABLE POSITION, Louis XVI and

21. ## Pre Calc

Use a graphing utility to graph the function and approximate (to two decimal places) any relative minima or maxima. (If an answer does not exist, enter DNE.) f(x) = −x2 + 9x − 8

22. ## Chemistry

What volume of 0.123M NaOH contains 0.025 moles of NaOH?

23. ## geometry

Robin is looking up at a 89degree angle to the top of the stratosphere in Las Vegas, which is 1149ft tall. how far away is Robin form the base of the tower? round to the nearest hundredth

24. ## Career

What are goal-related activities?

25. ## Temperature(Math)

At 1:00 pm the temp is 72 deg, the temp went down to 52 deg at 6:30, what is the temp at 4:00pm?

26. ## Language arts 8B

the poem It shall flash through coming ages, It shall light the distant years; And eyes now dim with sorrow Shall be brighter through their tears. It Shall flush the mountain ranges, And the valleys shall grow bright; It shall bathe the hills in radiance,

27. ## math

At a concert there are 3 times as many women as men. 3/5 of the men and 1/3 of the women wear glasses. There are 120 more women wearing glasses than men wearing glasses .How many people are at the concert?

28. ## math

The winning team's score in 13 high school basketball games was recorded. If the sample mean is 54.3 points and the sample standard deviation is 11.0 points, find the 98% confidence interval of the true mean.

29. ## Chemistry

Describe how you would make a 125 mL of 0.025 M solution of potassium dichromate?

30. ## Math

billys bike has wheels of diameter 70 cm he invented a counter for his bike which counts the number of revolutions the wheels make one day the county shows 350 revolutions how far has Billy cycled

31. ## algebra

a class recorded the number of movies that each student watched during the summer. draw a histogram to accuratley display this data.

32. ## MATH

can someone explain. 3(cos(X)-1)=-1 thanks

33. ## science

Can you predict the force needed to stretch the rubber band to 40.0cm?why or why not

34. ## Math

If rosario noticed that the distance from the pole in the center of the tetherball circle to the painted circle was about six feet. Then what was the radius of the tetherball

35. ## Chemistry

What is the chemical formula for coconut oil?

36. ## Algebra

Evaluate the polynomial 6x - y for x = - 3 and y = 2. A. 15 B. –20 C. 4 D. –16 I think it is b...am I right?

37. ## Algebra

I'd like to know if I am right... A rectangular box is twice as long as it is wide. The height of the box is 3 feet less than the width. If the box is x feet wide, what polynomial represents its volume in cubic feet? A. 4x - 3 B. 2x^3 + 6x^2 C. 2x^2 - 6x

38. ## Maths

How would you solve this in order to find t? 0.2t(t-5.1)(t-9.1)=2.4+0.75t I tried differentiating it, but I wasn't getting the answer I was supposed to

39. ## maths

Function for runner one: s=0.2t(t-5.1)(t-9.1) Function for runner two:s=2.4+0.75t 's' is for displacement and 't' is for time (where one minute is t = 1) At the start of a race, runner one begins with a displacement of 0m. However, at the start of the same

40. ## stats

Katie must take five exams in a math class. If her scores on the first four exams are 77, 79, 95, and 93, what score must Katie get on the fifth exam for her overall mean to be at least 80? The maximum score on an exam is 100 points. If it is not possible

41. ## math

write an algebraic expression for 10 + q

42. ## Math

What am I? I am a decimal fraction with three digits I am bigger than half of 6 I am smaller than double 2 All my digits are odd When you add my digits you get 15

43. ## science

Is tundra abiotic or biotic

44. ## Chemistry

How many liters of Carbon Dioxide are formed by burning 6011.0 grams of C3H7OH with excess of oxygen gas and is carried out at 20.00 degrees Celsius, and 1.150 atm of pressure. I know this needs PV=nRT but the burning and excess part is throwing me off.

45. ## Math

Sorry I wasn't finished with the problem. Fijisawa Inc. is considering a major expansion of its product line and has estimated the following cash flows associated with such an expansion. The initial outlay would be \$1,980,000, and the project would

46. ## Math

Fijisawa Inc. is considering a major expansion of its product line and has estimated the following cash flows associated with such an expansion. The initial outlay would be \$1,980,000, and the project would generate incremental free cash flows of \$490,000

47. ## Chemistry

A sample of krypton gas occupies 95.0 mL at 0.500 atm. If the temperature remained constant, what volume would the krypton occupy at (a) 5.00 atm, (b) 0.0500 atm, (c) 555 torr, (d) 5.00 torr, and (e) 5.5 3 1022 torr?

48. ## Education

What is the most appropriate reason for having learning centers in the science classroom?

49. ## Stats

A pill weighs 100 mg, 8/9 of the pill is active ingrediant, how many milligrams are in the part of the pill that is not the active ingrediant?

50. ## physics

Why is blood pressure called excess pressure? Use the term true pressure. Thank you for your help!

51. ## physics

Why do we measure blood pressure in mercury?

52. ## Math

There are 10,000 lockers. One person opens all the lockers. The second person closes every 2 doors. The third person counts every three locker and does the opposite to the locker. (Open/close it.) The fourth person counts every fourth locker and does the

53. ## Algebra 2

Find all of the zeros of each function 1. q(x)=2x^3-17x^2+90x-41 2.x^3-5x^2-7x+51 3.x^4-9x^3+24x^2-6x-40 Please show work!!! I want to learn how to do it.

54. ## Algebra 2

Solve the system algebraically 2x^2-5y^2=1 x^2+5y^2=68 Please show work!!!

55. ## Algebra 2

Find the equation for the parabola with the given vertex that passes through the given points. vertex (-4,2) point (-3,0) please show work!!!

56. ## Social Studies

Sectionalism grew in the southern states due to A) an increase in federal regulations on southern industry. B) holidays established to celebrate national events. C) the South's economic dependency on slavery. D) a weakened sense of regional

57. ## Algebra 2

what is the reason why we have an order of operations? Explain and provide an example.

59. ## Algebra 2

Use grouping to solve each of the following equations. 36x+2x^3-36-2x^2=0 Please show work I want to learn how to do it.

60. ## Algebra 2

Find the real zeros of each polynomial f(x)=5x^3-40 Please show work I want to learn how to did it

61. ## Algebra 2

Solve each polynomial equation. If a solution occurs more than once, state it's multiplicity. 4x^4-13^2+9=0 Please show work I need help

62. ## Algebra 2

Solving Quadratic Systems x^2+y^2=20 x^2-6y=28 PLEASE SHOW WORK I'M HAVING TROUBLE SOLVING IT

63. ## Algebra 2

Solving Quadratic Systems x^2+y^2=2 x^2-6y=10 Please show work I'm having trouble solving it

64. ## physics

An unknown mass of a certain solid, initially at 60⁰C, is heated at a uniform at a uniform rate. After 4.0 min the solid reaches its melting point of 80⁰C, and it remains at that temperature for 3.0 min until completely melted. After a further 6.0 min

65. ## Algebra 2

Solving Quadratic Systems 2x^2+5y^2=53 4x+y^2=17 Please show work I'm having trouble solving it.

66. ## Algebra 2

Solving Quadratic Systems 16x^2-9y^2=144 y=9-x^2 Please show work I'm having trouble solving it.

67. ## physics

how much ice at -10degree celsius is needed to cool .1 kg of ethyl alcohol and .1kg of water from 20 degree celcius to 5 degree celsius?

68. ## Math

Louis paid \$42 for a dozen magazines with her annual and subscription to her favorite sport magazine. What is the unit cost for each magazine?(How many magazines did she subscribe to) Please show work.

71. ## Algebra 2

More About Complex Numbers Multiply (4+3i)(1-i) Please show work i need help

72. ## Algebra 2

More About Complex Numbers Find the reciprocal. -1-i 2i

73. ## Algebra 2

More About Complex Numbers Find the conjugate of each number. 1.)squ root of 3-7/8i 2.) 2-mi 3.) 6 Please show work I need help

74. ## Algebra 2

More About Complex Numbers Multiply (4+3i)(1-i) Please show work i need help

76. ## Chemistry

A sample of oxygen at room temperature occupies a volume of 5.00x102 mL at 1.50 atm pressure. What pressure (in atm) must be applied to compress the gas to a volume of only 1.50x102 mL? Assume the temperature is constant.

77. ## Law Studies

What rights does the Bill of Rights Protect?

78. ## Algebra 2

Complete the Square Solve each equation x^2+8x+16=16/9 Show work i want to learn!!!

79. ## Algebra 2

Solving By Factoring 2x(2x+1)=2 Please show work!!!

80. ## Algebra 2

Solving By Factoring (x-8)(x-5)=x Please show work!!!!

81. ## Algebra 2

solve each inequality or equation. Graph the solution. 5(absolute value 3w+2)-3>7 *Please show me the work

82. ## Algebra 2

solve each system of equation 3x+5y+2z=4 2x-2y+3z=-4 x+y+z=0 *could you show work because I want to learn how you got this answer

83. ## Algebra 2

Given a point (-2,5determine a point that satisfies the specified symmetry. 1. Origin (2,-5) 2. y-axis (2,5) 3. x-axis (-2,-5) 4. y=x ? Could you check if 1-3 is correct and could you help me on #4

84. ## physics

What force exists between a positive charge of 2.6 x 10-6 C and a negative charge of 4.2 x 10-5 C if they are separated by 8 cm?

85. ## Social Psychology

What attributes are inherent in persuasive messages?

86. ## Strategies for Academic Success

Sean is taking an online course in Psychology, and is about to take a quiz over the lesson, “The Experimental Method”. He did poorly on his homework assignment and is struggling to remember the lesson content. What should Sean do before he takes the

87. ## Strategies for Academic Success

What is "stage one" of a study session? Why is it so important?

88. ## Strategies for Academic Success

What skill is "critical" to success in online learning?

89. ## math

The sphere has surface area 2058 cm2. Its radius, to the nearest tenth, equals

90. ## math

The radius of the earth is approximately 3950 miles. The radius of Jupiter is approximately 44,400 miles. Since the radius of Jupiter is more than 11 times that of the earth, which comes closest to the volume of Jupiter ?

91. ## Geometry

Show that each conditional is dales by finding a counterexample. If an animal is a bird, then it is a penguin.

92. ## Algebra

Ramona divided his 35,000 inheritance between two investments, one paying 9% and the other 12% simple interest. is total annual income on the interest alone was 3,000. How much did he invest at 9%?

93. ## Geometry

a hemispherical bowl with radius 25cm contains water whose depth is 10cm. what is the water's surface area

94. ## Geometry

I need help in this question!!! CD has an endpoint at (2,-1) and a midpoint at (8,3). which measure is closest to the length of CD? A. 20.4 units B. 8.4 units C. 14.4 units D. 11.7 units

95. ## Geometry

CD has an endpoint at (2,-1)and a midpoint at (8,3). which measure is closest to the length of CD?

96. ## introductory to physics

A pendulum bob is released from some initial height such that the speed of the bob at the bottom of the swing is 4.0 m/s. The acceleration of gravity is 9.81 m/s 2 . What is the initial height of the bob? Answer in units of m

97. ## Accounting

Suppose you want to have \$5,000 saved at the end of five years. The bank will pay 2% interest on your money. How much would you have to deposit today to have the \$5,000 you want at the end of five years?

98. ## Math

Mariko has an 80 inches = 1 inch scale- drawing of the floor of her house. On the floor plan, the dimension of her rectangular living room are 1 7/8 inches by 2 1/2 inches. What is the area of her real living room in square feet?

99. ## Math

A scale drawing of a rectangular field is 10 cm by 8.5 cm. if the actual field has dimensions of 40 meters by 34 meters, which could be the scale used for the drawing?