# Selena

Popular questions and responses by Selena
1. ## US Gov't

Which Roman contribution to political theory was adapted by the Founding Fathers?

2. ## Calculus

A wire 17 inches long is cut into two pieces. One piece is bent to form a square and the other is bent to form a rectangle that is twice as wide as it is high. How should the wire be cut in order to minimize the total area of the square and rectangle?

3. ## English 2

Write an essay of at least 250 words that describes and explains examples of figurative language you found in Animal Farm when you completed your response journal on that topic. Include one example of each of the five types of figurative language from the

4. ## physical education

What nutritional supplement is recommended for helping the body handle stress? A. Zinc B. Iron C. Vitamin C D. No supplements are recommended for stress management I think its a but im not sue please help

5. ## Math

The probability of winning a large stuffed animal in the ring-toss game at a fair is 10%. Find the probability of winning at least 5 of 50 games using normal approximation. I got 0.4052 but answers says it's 0.5932. Please help!

6. ## Algebra 1b!

Could you guys check my answers? 1. Graph the function and identify the domaine and range. y=-1.5^2 Domain; (-,+) Range; (-,0) ( my answers.) 2.How is the graph of y=-2x^2-5 different from the graph of y=-2x^2 It is shifted units up it is shifted 5 units

7. ## Algebra

A ball is thrown into the air. The height in feet of the ball can be modeled by the equation h = -16t2 + 20t + 6 where t is the time in seconds, the ball is in the air. When will the ball hit the ground? How high will the ball go?

8. ## Chemistry

What is the temperature change in celsius when 29.5L of water absorbs 2.3 kwh of heat?

9. ## physics

A metal rod is 40.125 cm long at 20 °C and 40.148 cm long at 35 °C. calculate the coefficient of linear expansion of the rod for this temperature range.

10. ## english

Which word or phrase is an appositive in the sentence? When Sandy met John—a scientist and critic—she fell in love with him.

11. ## English

Why is it important that "The Story of an Hour" takes place in the nineteenth century? In the nineteenth century, women were not considered equal to men. *** The characters use nineteenth-century expressions that are hard to understand. *** Nowadays,

12. ## science

chemical reaction in cells that needs oxygen to release energy and produce carbon dioxide and water as waste 1)breathing 2)exhaling c)inhaling d)respiration

13. ## Algebra

Use the Zero Product Property to solve the equation: -3m(2m – 5) = 0

find the midpoint of a segment with endpoints at (7,9) and (-1,-1)

15. ## Chemistry

Consider the chemical reaction below equated 2N2O5 (g) -> 4NO2 (g) + O2 (g) knowing that a certain period of time, N2O5 consumption rate is 0.10 mole / s, determine for the same time interval: a) the average rate of formation of NO2 b) the average speed O2

16. ## Operating Systems

Given that main memory is composed of only three page frames for public use and that a seven-page program (with Pages a, b, c, d, e, f, g) that requests pages in the following order: a, c, a, b, a, d, a, c, b, d, e, f. Using the FIFO page removal

17. ## Earth space science, check answers?

A. 75 % B. 12.5% C. 25% D. 3.13% E. 9.38% 3. what percentage of land on the earths surface is inhospital lands? - B 4. what percentage of earths surface is covered by land? - C 5. what percentage of land on earth is usable, for living on, but not for

18. ## Chemistry

Combustion analysis of 0.300 g of an unknown compound containing carbon, hydrogen, and oxygen produced 0.5213 g of CO2 and 0.2835 g of H2O. What is the empirical formula of the compound? C2H5O C3H8O2 C2H10O3 C2H5O2

19. ## physics

hiw much heat is needed to raise the temperature of 0.800 kg. ethyl alcohol form 15.0 celcius to its boiling point 78.3 celcius

20. ## Algebra help?? Stuck!

The equation y=−0.065x2+6.875x+6200 models the amount y of sugar (in pounds per square foot) produced where x is the amount of fertilizer (in pounds per square foot) used. What is the best approximate for the amount of sugar produced when 3 pounds per

21. ## United states history

What similarities do you see between the United States today and the United States of the past? What issues and problems do we continue to grapple with? What successes do we share with Americans in the past? I want to find something now in united states

22. ## Algebra

Simplify: b. 4√10-√10

A. 75 % B. 12.5% C. 25% D. 3.13% E. 9.38% 3. what percentage of land on the earths surface is inhospital lands? - B 4. what percentage of earths surface is covered by land? - C 5. what percentage of land on earth is usable, for living on, but not for

24. ## english

Regarding the use of commas, which one of the following statements is accurate? A. A parenthetical use of commas is usually confusing to the reader. B. There is no need for commas that indicate added details in a sentence. C. Commas are needed to separate

26. ## physics

Consider the following set of equations, where s, s0 and r have units of length, t has units of time, v has units of velocity, g and a have units of acceleration. Take k to be dimensionless.Identify if these are dimensionally correct or incorrect. 1)v^2=

27. ## math

jim's 10-foot garage casts a 7-foot shadow. his house has a 17.5-foot shawdow. how tall is his house

28. ## math

daffynition decoder

lavre has sixty-one coins, all of whichare dimes and quaters. if the total value of the coins is \$9.85, how many of each kind of coins has she?

30. ## economic

What do opportunity cost have to do with slope?

31. ## chemistry

how to balance equations

32. ## Social Studies

If an archeologist found an artifact near the Fourth Cataract, why might he or she have difficulty deciding how to display it in a museum?

33. ## geometry

If m || n and angle 5 is 32 degrees, what are the other angle measures?

34. ## geometry

find value of x and y 2x+19 and 4x+7

36. ## Consumer Math

Tommy borrowed \$600 at 9% for 12 months under a monthly installment plan. he must pay \$8.7453 per \$100 each month for 12 months. how much is his monthly installment payment?

37. ## NM social studies

How were the Maya and Aztecs civilizations similar? A. They both lacked a strong government. B. They both developed complex mathematical and calendar systems.** C. They both used weapons superior to those of early eastern civilizations. D. These

38. ## math

a right rectangular pyramid has base dimensions 7yd. by 5yd. and a height of 10yd. determine the surface area of the pyramid to the nearest square yard.

39. ## Algebra

5. Solve for x in the following system. 6x + 6y = -2 y = x I can't seem to figure this out, can someone give me some steps into solving this? I've tried so many times.

40. ## math

Josh poured 38 gallons of water into 6 buckets. He poured the same amount into each bucket. How much water did Josh pour into each bucket?

41. ## Math Ms.Sue Help

Which data value has the highest frequency? A) 1/16 B) 3/16 C) 3/8 D) 5/8 A number line with four x's above one sixteenth, one x above three sixteenths, one x above three eighths, two x's above one half, two x's above five eighth, and one x above three

42. ## Math

Why id gonzo walk around carrying ice cream and a pair os sparrows

43. ## Math algebra

David Robertson works as a chemical engineer for U.S. peroxide Corporation. David has 2500 gallons of commercial-grade hydrogen peroxide solution that is 60% pure hydrogen peroxide. How much distilled water(which is 0% hydrogen peroxide) will David need to

44. ## Chemistry

What are the elements in Group A1 on the periodic table? alkali metals alkali earth metals inner transition metals ** halogens

45. ## Math3c

1.Find an A.P. such that the sum of the first three terms is one half the sum of the next four terms,the first term being 12. 2.In an A.P.,the sum of the first three terms is 18,and the sum of the squares of these terms is 126.Find the terms.

46. ## chemistry

Some physical properties of water are shown below: melting point 0.0°C boiling point 100.0°C specific heat solid 2.05 J/g·°C specfic heat liquid 4.184 J/g·°C specific heat gas 2.02 J/g·°C ΔH° fusion 6.02 kJ/mol ΔH° vaporization 40.7 kJ/mol 80.0

47. ## Math

Sally has a recipe that needs 1 1/2 tsp. of butter for every3 cups of milk. If Sally increases the amount of milk to 13 1/2 cups of milk, how many tsp. of butter are needed?

48. ## Math

Peter's lawn is 4800 square feet in area, and he mowed 1200 square feet of it. What fraction of his lawn still needs to be mowed?

49. ## math

i am less than 45 greater than 35 divisible by 10,5 what number am i

50. ## Physics

An 1750 kg weather satellite moves in a circular orbit with a gravitational potential energy of 1.69 x 10^10 J. At it's location, free-fall acceleration is only 6.44 m/s^2. How high above Earth's surface is the satellite?

51. ## Math

what is the difference between |-3| and -3.

52. ## Math

Write the expression as a single fraction and simplify. 3/a + 3/b Is this when you cross multiply and get 3a + 3b? Except the answer has to be a fraction so I am not sure.

53. ## probability

Please help me solve this problem step by step pleaseeee! The probability that an archer hits the target is p= 0.8, so the probability that he misses the target is q = 0.2. It is known that in this situation the probability that the archer hits the target

54. ## Algebra

Can anybody help me on this problem for my Algebra 2 class, I am having a hard time tyring to solve it step by step. The probability that an archer hits the target is p = 0.8, so the probability that he misses the target is q = 0.2. It is known that in

55. ## Algebra

I need help step by step please I keep getting a wrong answer of 252? Find the 24th term in the expansion of (a + b)^ 25

56. ## Algebra

I need help step by step please I keep getting a wrong answer of 252? Find the 24th term in the expansion of (a + b)^ 25

57. ## Algebra

Can anybody help me on this problem for my Algebra 2 class, I am having a hard time tyring to solve it step by step. The probability that an archer hits the target is p = 0.8, so the probability that he misses the target is q = 0.2. It is known that in

58. ## Calculus

A strong swimmer is one mile off shore at point P. Assume that he swims at the rate of 3 mile per hour and walk at the rate of 5 miles per hour. If he swims in a straight line from P to R and then walks from R to Q, how far should R be from Q in order that

59. ## Logs

log (sqrt4(x^16 / y^4)) What is the value of the expression when logx=8 and logy=1? My work: x=10^8 y=10 I tried to plug these in but my calculator but it said "overflow." Is there an easier way to do this?

60. ## Math

(-3,5) (-2,-6) I do not understand equation of a line

61. ## physics

calculate the linear speed of a point on the record at the beginning and the end of the record that rotates at 33rev/min r1=7cm,r2=15cm

62. ## math

what is 82 over 100 in simplest form?

63. ## Geometry

P->P'(-8,-3) for the glide reflection where the translation is (x,y)->(x,y-5) and the line reflection is x=-5. what are the coordinates of P? (-8,-8) (-8,2) (-2,-3) (-2,2)

64. ## English

1. Why does George try to prevent Lennie from playing with small animals? (1 point) He doesn't want Lennie to have a pet until he proves he can keep out of trouble. He is worried that Slim will be angry if Lennie plays with the puppies. He is embarrassed

65. ## Chemistry

Weight of the Rock Salt Sample: .343 (g) Weight of the Rock Salt Solution: 9.910 (g) Trial #1 Trial #2 Trial #3 Weight of Rock Salt Solution Delivered (g) : .89 1.17 .786 Weight of AgNO3 Solution Delivered (g) : 1.53 .548 .786 Concentration of AgNO3 :

66. ## Physics

I don't know if my answers are right. D: 1)Why is a time interval always positive? I'm not really sure but I wrote down something with vectors and scalars. 2)If the average acceleration of a car is zero in a given time interval, what can you tell about the

67. ## Physics

Little Timmy falls down a well and hits the water 1.5s later. Determine the distance from the top of the well to the water below. Just an equation would be fine. Thanks in advance.

68. ## Algebra 2

I need to use zero product property on these equations and I just need a few examples to get myself started on the other problems since I don't understand it at all. :c Help is appreciated. Thanks in advance. f(x)=x^2+8x+12 g(x)=6x&2+20x-16

69. ## Physics

Starting from rest, Mr.M's bus achieves a velocity of 25 m/s in a distance of 1.0 km. Find the time and the acceleration. I don't know which formula to use. Delta T = Vf - Vi / Aavg ?

70. ## Physics

A car enters the freeway with a speed of 7.2 m/s south and accelerates uniformly for 4.2 km in 4.0 min. How fast (in m/s) is the car moving after this time? I only need the formula. My teacher gave us a list but did not tell the class which equation is for

71. ## Chemistry

What is the molarity of HCL if it takes 16.5 mL of 0.100 M NaOH to titrate 10.0 mL of HCl? HCl + NaOH -> H2O + NaCl molarity = moles of solute/liters of solution

72. ## AP Calculus

Find an equation of all tangent lines for the curve x^2-xy+y^2=16 x=-2 2x-(xy'+y(1))+2yy'=0 2x-xy'+y+2yy'=0 y'(-x+2y)=-2x-y y'=-2x-y/-x+2y y'=-2(0)-y/-(0)+2y y'=-y/2y Not sure what to do now?

73. ## physics

To estimate how high the cliff is you throw a rock off the edge and 7.8 s later you hear the rock hit the ground. The speed of sound is 330 m/s. Ignoring air resistance how high is the cliff?

74. ## Math

The president of Texas state University makes three times as much money as one of the department heads. If the total of their salaries is 290,000, find each worker's salary.

75. ## Algebra

What are the solutions to the system? (Hint: graphing is the easiest!) y = x2 + 2x - 45 y = -3x + 5

76. ## Chem

What will the products be for Ni(s) + 2Na^+(aq)? I don't think this is even possible, so will this reaction even be possible?

77. ## Chem

What is the product for the reaction of Ni(s) + 2Na^+(aq)? I don't think this is possible no?

78. ## Chemistry

3) A student mistakenly uses the cuvette containing the most dilute standard solution, rather than the cuvette containing deionized water, as the blank solution. I don't understand why there would be lower concentration of Cr(VI) ion...

79. ## Algebra 1b!

1. Find the excluded value of x for the polynomomial expression 4x/6 a. 6 b. -6 c. 1/6 d. -1/6 2. Simplifly 3-2x/7 + 4x+5/7 a. 2x+8/14 b. 2x+8/7

80. ## Earth space science

I need help with this. the map doesnt show anything and idk how to post the map on here... Match the cities A,B,C, and D with the weather description of the surface model (To the right of each letter) a. city A b. City B c. City C d. City D A. Pressure of

81. ## English!

This is what i got so far but i need help with an opening paragraph and conclusion Mark twain used huck as narrator to see the innocent view of these difficult adult themes. in the eyes of a child, the morality of the situations he finds are much more

82. ## English

For english i'm doing facts about mark twain and if i put " Around all of the facts, is it still plagiarism?

83. ## Huckleberry Finn

Explain how the author created the character (characterization). Explain the theme of a piece of literature. Compare and contrast two pieces of literature. Write about one of the authors we have studied.

84. ## physical science

I am having a little trouble with this problem. can someone please HELP! During a race, a runner runs at a speed of 6m/s. 2 seconds later, she is running at a speed of 10 m/s what is the runner's acceleration?

85. ## math

How would I solve this; John is paid at an hourly rate of \$15 and over time rate of 1.5 times his hourly rate. If john puts in w regular hours and y overtime hours in a week, what is his total wage for the week? (Monday-Friday

86. ## math

1/2 + (-5/6) =?

87. ## english

Which of the following is not a correct option for writing out the date in question? A. 25 January 2000 B. January 25, 2000 C. 2000, January 25 D. 01/25/00 I think this one D

88. ## englis

8. Which of the following options accurately represents the steps involved in the writing process? A. Write first draft, edit, revise, write final draft B. Write first draft, revise, proofread, write final draft C. Plan, write first draft, edit, write

89. ## english

3. Which one of the following sentences best describes paraphrasing? A. Janette listened to the speaker and took notes. B. Janette listened to the speaker, asked questions, and wrote a report. C. Oscar studied Dr. Frost's article and summarized it in his

90. ## Social Studies

Which state is the least densely populated? 1. Alaska 2. Hawaii 3. Minnesota 4. New Jersey My Answer: # 2 Hawaii

91. ## Pre-Algebra

For numbers 1–3, find the indicated measurement of the figure described. Use 3.14 for (pi) and round to the nearest whole number. 1) Find the surface area of a sphere with a radius of 8 cm. a. 268 cm2 b. 804 cm2 c. 2,144 cm2 d. 201 cm2 2) Find the

92. ## algebra

4y^3-4y^2+3-y

93. ## trig

a ship leaves port with a bearing of S 42deg W after traveling 7 miles, the ship turns 90deg and travels on a bearing of N 52deg W for 10 miles at that time, what is the bearing of the ship to the port?

94. ## Algebra 2

To rationalize the denominator of 4/(2+√8), Brittany multiplied by (2-√8)/(2-√8) and Justin multiplied by (1-√2)/(1-√2). Explain why both are correct.

95. ## physics

What is its speed after 1.87 s if it accelerates uniformly at −4.31 m/s^2? Answer in units of m/s

96. ## physics

The initial speed of a body is 2.14 m/s. What is its speed after 1.87 s if it accelerates uniformly at 4.31 m/s^2? Answer in units of m/s

97. ## physics

A body moving with uniform acceleration has a velocity of 10.2 cm/s when its x coordinate is 3.73 cm.If its x coordinate 2.33 s later is −2.74 cm,what is the x-component of its acceleration?Answer in units of cm/s^2

98. ## physics

What is the average acceleration a between 14 s and 16 s?

99. ## physics

What is the average velocity v between 0 s and 6 s?