Popular questions and responses by help please
1. ## Mathematics

out of 6 cheerleaders, 3 will be selected to march in the first row of the parade how many 3-person arrangements can be formed using the 6 cheerleaders if Sandy must stand on the left end of the front row and Dana must also be included in the front row? A.

2. ## History

Why did iranians take 53 Americans hostage at the American embassy in Iran? A. To force the United Statesvto loft to oil ban B. Because the US government allowed the shah to travel to the United States for medical treatment *********? C. because Atatollah

3. ## mathematics

A store advertises skirts for x-5 dollars and allows an additional two dollar reduction on each skirt if three or more skirts are purchased.Represent the cost of five skirts.

4. ## Electrical

Explain the operation of an alarm system and strobe lighting system, by determining the resistance of the resistor in the alarm circuit and explain the functionality of the resistor in the circuit.

5. ## AP CHEMISTRY

A)In a chemical reaction two gases combine to form a solid. What do you expect for the sign of ΔS? B) For which of the following processes does the entropy of the system increase? (Select all that apply.) -> alignment of iron filings in a magnetic field

6. ## Computer Science

Which of the following statements contains an error? 1. system.out.print("/tab Age in Minutes: " + ageInMinutes +"/n"); 2. system.out.print("t/ Age in Minutes: " + ageInMinutes + "n/"); 3. system.out.print("/t Age in Minutes: " + ageInMinutes + "/n"); a. 1

7. ## English

Is this a simple sentence or a fragment? Doesn’t need help.

8. ## English

Not just silent adult tears, but really sobbing. Is this a simple sentence or fragment. I think it is a fragment, is that correct. But, I am having trouble coming up with why?

9. ## Math

Brian gave 20% of his baseball cards to Scott and 15% to Adam. If he still had 520 cards, how many did he have originally?

10. ## mathematics

Mandy earned x dollars and Andy earned 4x �+ 7 dollars on the first day of a charity carwash. If Mandy and Andy each earned the same amounts on the second and third days of the car wash, how much did they earn together over the course of the 3 days?

11. ## LA the giver chapters 1-2

Which of the following is an example of a dwelling? Select all that apply. 1. a city 2. a house*** 3. a monument 4. a condominium*** Which of the following passages from the novel helps you realize that the community in which Jonas lives is not like

12. ## physics

A 2.0-kg ball moving at 10 m/s makes an off-center collision with a 3.0-kg ball that is initially at rest. After the collision, the 2.0-kg ball is deflected at an angle of 30° from its original direction of motion and the 3.0-kg ball is moving at 4.0 m/s.

13. ## AP CHEMISTRY

Calculate the solubility of Mn(OH)2 in grams per liter when buffered at each of the following. a) pH 7.4 b) pH 9.2 c) pH 11.5 ALL IN GRAMS PER LITER. PLEASE HELP ME AND EXPLAIN

14. ## computer science

Which of the following statements does not contain an error? 1. string firstName= in.next(); 2. string lastName= in.nextline(); 3. system.out.print("\n"); a. 1 only b. 2 only c. 3 only d. 1 and 3 only e. 2 and 3 only is the answer 1 and 3

15. ## physics

The drawing shows a 25.1-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces, 1 and 2, are applied to the crate, and it begins to move. The coefficient of kinetic friction between the crate and the

16. ## pre algebra

1. Solve the equation. –9v – 5 = –95 (1 point) 17 11 10 –10 2. Solve the equation. x over four – 5 = –8 (1 point) –27 –12 –7 12 3. Solve the equation. p over five + 6 = 10 (1 point) 44 30 20 –20 4. Solve the equation. –2(m – 30) =

17. ## MATH

The table below represents the volume of a liquid sample as a function of its temperature: Temp (C) Volume (ml) x f(x) 11 95 16 100 21 105 26 110 The average rate of change of f(x) between x=11 to x=21 is _____ ml per C ((degrees)) and represents the rate

18. ## history

1. Which factor contributed most to the beginning of the women's rights movement in the United States during the mid-1800s? A. A dramatic increase in women's participation in the workforce *** B. A shift in social attitudes brought on by increased

19. ## Math

Solve each problem and write your answer in scientific notation. 1.(6.0x10^5)x(3.0x10^4) A.18x10^20 B.18x10^9 C.1.8X10^20 D.1.8x10^10 2.(5x10^-2) ÷(2x10^3) A.2.5x10^-5 B.2.5x10^-1 C.25x10^1 D.25x10^2 3.(2.56x10^6)x(3.56x10^2) A.9.1136x10^12 B.91.136x10^8

20. ## physics

A 2.0-kg ball moving at 10 m/s makes an off-center collision with a 3.0-kg ball that is initially at rest. After the collision, the 2.0-kg ball is deflected at an angle of 30° from its original direction of motion and the 3.0-kg ball is moving at 4.0 m/s.

21. ## language arts

On which character traits does the narrator of “the tell-tale heart” pride himself? a. his abilities to lie and steal b. his sneakiness and his fear c. his wit and his confidence d. his intelligence and his patience i think it’s d! help!?

22. ## educational technology

which verb tense is used in the following sentence? as captain i represent the team at debates A. present tense B. future tense C. past tense D. early tense I think B can someone please help?

23. ## Algebra 1

You use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is 0.793. How confident can you be that your predicted value will be reasonably close to the actual value?

24. ## Math

Find the lateral area of the cone. Use 3.14 fo pi and round result to the nearest whole unit. radius: 15cm Side unit: 28cm Please help!! A) 1,319 cm squared B) 2,639 cm squared C) 707 cm squared D) 2,026 cm squared is the answer B?

25. ## algebra

A stainless steel patio heater is a square pyramid. The length of one side of the base is 21.6 inches. The slant height of the pyramid is 83.3 inches. What is the height of the pyramid? Round to one decimal place as needed. I have tried and can't figure it

26. ## SCIENCE

If we decrease the distance an object moves we will decrease the amount of force applied. Decrease the amount of work done. increase the amount of force applied. increase the amount of work done.

27. ## social studies

Which hazards does climate change pose for Southeast Asia? Select the two correct answers. A. rising sea levels B. more volcanic eruptions C. more intense typhoons D. increased tectonic activity E. overcrowding in coastal cities

In 2001, Windsor, Ontario received its maximum amount of sunlight, 15.28 hrs, on June 21, and its least amount of sunlight, 9.08 hrs, on December 21. 1) Due to the earth's revolution about the sun, the hours of daylight function is periodic. Determine an

29. ## Physics

1. A bullet of 0.0500 kg is fired into a block of wood. Knowing that the bullet left the gun with a muzzle velocity of 350. m/s, and the bullet penetrates .15 m into the block of wood, determine: a) The average force required to stop the bullet. b) The

30. ## AP CHEM

potassium tetrabromo(ortho-phenanthroline)- cobaltate(III)

31. ## Maths

Ab = 125ft Bc = 85ft C = 63° 1. Find the length of Ac 2. Whats the total length around triangle if there is two 3ft opening ?

32. ## Spanish

1. Which would be true for stem changing verbs? All forms of the verb have some type of irregular change. They have a consistent spelling change in the stem of the verb. Stem changing verbs are the same as irregular verbs, it is just a different name. They

33. ## Geometry

Which of the following describes a median of a triangle? A. a segment drawn from a vertex to the midpoint of the opposite side B. a segment drawn from the vertex perpendicular to the line containing the opposite side C. a segment drawn through the midpoint

34. ## world history

What were the purposes of the earthworks built by cultures of eastern North America? SELECT THREE . A.as burial mounds B.as temple platforms C.as astronomical observatories D.as defensive structures E.as fields for athletic competition select 3 answers one

35. ## language arts

which question best relates to these details in winter. Frogs burrow the mud, snails bury themselves a.what happens to frogs in the winter. b.how do animals differ from people in the winter. c.why do sanils bury themselves. d.how do creatures pepare for

36. ## Science

Q1: Why do scientist use models? A.) Scientist use models to learn about things that are too small, too late, or too complex to observe directly. B.) Scientist use models because doing so is always part of the scientific method. C.) Scientist use models

1. The first successfully established English colony in North America was (1 point) Plymouth. New York. Jamestown. Santa Fe. 2. Protestants who wanted to reform the Anglican Church were called (1 point) Pilgrims. Puritans. Plymouthians. priests. 3. How did

38. ## Math

Prove that 1 * 3 * 5 * ... * 2345 + 2 *4 * 6* ... * 3456 is divisible by 6789.

39. ## ALGEBRA

The table below shows two equations: Equation 1 |3x - 1| + 7 = 2 Equation 2 |2x + 1| + 4 = 3 Which statement is true about the solution to the two equations? Equation 1 and equation 2 have no solutions. Equation 1 has no solution and equation 2 has

40. ## AP CHEM

formula for bipyridyl

41. ## Texas History

Why did the Spanish return to texas in 1716? A)The Hasinai requested that they return and build a new mission. B)They came to help the Apache fight the Karankawa. C)They heard that gold had been discovered in the area * D)They wanted to keep the french out

42. ## computer science

Which of the following statements does not contain an error? 1. string firstName= in.next(); 2. string lastName= in.nextline(); 3. system.out.print("\n"); a. 1 only b. 2 only c. 3 only d. 1 and 3 only e. 2 and 3 only is the answer 1 and 3

43. ## computer science

what is the value of the variable int iNum= 2.02 A. 2 B. 2.0 C. 2.02 D. 0.0 E. error:possble loss of precision please help and explain

44. ## computer science

what is the value of the variable? double dNum= 6.23 A. 6 B. 6.0 C. 6.23 D. 0.0 E. error: possible loss of precision

45. ## computer science

what is the value of the valuable double dNum=5 A. 5 B. 5.0 C. 0 D. 0.0 E. error: possible loss of precision please help and explain

46. ## LA

Choose the option that best completes the multi-draft reading process for poetry. First Read: Read to unlock the basic meaning of the poem. Second Read: ????? Third Read: Find relationships between ideas in the poem. 1. Consider how the poems structure

1. Why did farm prices fall in the 1950’s? a. Farmers bought new expensive machinery b. Farmers produced more than they could sell** c. Farmers could not sell their products in Europe d. Farmers saw their government subsidies reduced 2. What shortage was

48. ## math

Which of the following sets contains 3 irrational numbers ? a. { square root of 120 , pie , square root of 3 } b. {neg. square root of 256 , 1/9 , 1/12} c. {3.14 , -47 , 100} d. {pie , square root of 0.36 , square root of 121}*

49. ## Pre-calculas

Boat A leaves a dock headed due east at 1:00 PM traveling at a speed of 16 mi/hr. At 2:00 PM, Boat B leaves the same dock traveling due north at a speed of 18 mi/hr. Find an equation that represents the distance d in miles between the boats and any time t

50. ## Health 7th

you want to ask your teacher for extra help,so you practice in your mind what you will say. this is an example of ____. A) eustress B) distress C) a stressor D) a mental rehearsal _____________________________________ during the alarm stage of stress your

51. ## math

simplify 10p4 A. 210 B. 360 C. 5,040 D. 151,200 simplify 9c4 A. 126 B. 15,120 C. 5 D. 3,024

52. ## math

Food Express is running a special promotion in which customers can win a free gallon of milk with their food purchase if there is a star on their receipt. So far, 129 of the first 138 customers have not received a star on their receipts. What is the

53. ## Algebra 1 math

Deborah rolls two fair dice. What is the probability that the sum of the numbers rolled is 7?

54. ## PHYSICS

A 5450-m^3 blimp circles Fenway Park duing the World Series, suspended in the earth's 1.21-kg/m^3 atmosphere. The density of the helium in the blimp is 0.178 kg/m^3. A) What is the buoyant force that suspends the blimp in the air? B) How does this buotant

55. ## AP CHEMISTRY

Calculate the solubility of LaF3 in grams per liter in the following solutions. (Ksp = 2. 10-19.) a) pure water Ans: .00182g/L b) 0.037 M KF solution c) 0.055 M LaCl3 solution NEED b&c PLEASE HELP

56. ## AP CHEMISTRY

The following acid-base indicators are available to follow the titration. Which of them would be most appropriate for signaling the endpoint of the titration? EXPLAIN ------- COLOR CHANGE ------ INDICATOR Acid form Base Form pH Transition Interval

57. ## AP CHEMISTRY

Calculate the equivalent mass of each of the following acids. a) HC2H3O2 b) KHCO3 c) H2SO3

58. ## Maths

Convert 10gallons of oil with a density of 0.65g/ml to pounds

59. ## Math

Penalty will be 4500 for 1st day, 12000 everyday after. And budget is only 155000. How many days can i afford? Using arithmetic progression.

60. ## Math

In a study, a fish and game department worker catches, tags, and frees 124 catfish in a lake. A few weeks later he catches and frees 140 catfish. 35 have tags. Estimate the number of catfish in a lake. (Hint: set up and solve a proportion).

62. ## technology

what is a Boolean operator? a link would be great please and thank you:)))

63. ## History

Which of the following actions occurred first? Japan attacked Pearl Harbor The Axis powers invaded neighboring territories The Lend-Lease Act was proposed The United States drafted men into the armed forces I honestly have no idea what the answer could

64. ## biology

The Excretory System removes excess… W _ _ _ _ _ _ _ T _ _ A _ _ _ _ - _ I _ _ _ _ _ I have water salts but I'm not sure for the last two I believe its waste for one but the other I don't know

65. ## geometry

On the coordinate plane, ΔABC ≅ ΔDEF by SSS. ΔABC translates 2 units to the left and 3 units down. Do the triangles remain congruent? Explain why or why not.

66. ## chemistry

Classify the reaction between zinc and acetic acid and explain, in general terms, what happens during this type of reaction. would the type of reaction be a single replacement ??

67. ## chemistry

. Classify the reaction between zinc and acetic acid and explain, in general terms, what happens during this type of reaction. would the type of reaction be a single replacement ??

68. ## Social studies

Which sentence best describes How the process of the westward expansion affected American political culture? A-The need for labor led to the abolition of slavery and increased respect for personal liberty B-The concept of expansion led to an accepting

69. ## Geometry

Find the perimeter of the polygon with vertices of A(0, 0), B(4, 0) and C(2, 3). Round to the nearest tenth. Just enter one number as your answer Can you please help me

70. ## Geometry

Your Turn: Given points (0, 0) and (3, 6), find the point which partitions the segment into 3:2. A. (1.8, 3.6) B. (2,4) C. (3,5) D. (4.5, 9) can you please help me

71. ## Geometry

Find the surface area and volume of a solid made up of a cone, a cylinder, and a hemisphere with a height of 5 each laying on top of each other.

72. ## Social Studies

1.What prompted the call to rewrite the Articles of Confederation? A:The desire to win independence by unifying the nation B:The economic downturn caused by the limitations on the central government C:The need to establish a national court system to deal

73. ## health 7th

1. during the alarm stage of you stress body release a chemical called adrenaline which is part of a. eustress b. the flight-or-fight- response*** c. mental rehearsal d. a catastrophe 2.nay event or situation that causes stress is called a(n) a. eustress

74. ## Geometry

The endpoints of a line segment are at the coordinates (4, -2, 5) and (6, 4, -3). What is the midpoint of the segment? (-2, -6, 8) (10, 2, 2) (5, 1, 1) (-1, -3, 4) My choice- C

75. ## SS

to supply energy needs in the future, A) we have unlimited supply of fossil fuels. B) Its not necessary to look for new sources of energy. C) renewable energy sources are being devolved. D) atomic energy provides a safe alternative to fossil fuel.

76. ## Physics

An 89.5 kg fullback moving east with a speed of 5.7 m/s is tackled by a 81.5 kg opponent running west at 2.58 m/s, and the collision is perfectly inelastic. (a) Calculate the velocity of the players just after the tackle. m/s (b) Calculate the decrease in

77. ## math

one number is 8 less than another. If twice the larger number is equal to four times the smaller number.what is the smaller number?

78. ## The giver

Why does Jonas share a memory with Gabriel? A. He is trying to calm the baby and lull him back to sleep B. He is eager to transmit his experiences to a member of the community C. He does not think anything is wrong with sharing his memories D. He feels it

79. ## algebra

evaluate the expression when a = 4 b = -5 and c = -8 -b + c =

81. ## math

a basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jameson picks a fruit at random and does not replace it. Then Brittany pricks a fruit at random. What is the probability that Jameson gets a banana and

82. ## math

a number cube is rolled 150 times. the number 3 comes up 43 times. hat is the experimental probability of rolling a 3? what is the theoretical probability of rolling a 3? A. 43/150 ; 1/6 B. 43/150 ; 1/50 C. 1/6 ; 43/150 D. 3/43 ; 1/6

83. ## chemistry

The solubility of AB(s) in a 1.000-M solution of C(aq) is found to be 0.121 M. What is the Ksp of AB?

84. ## geometry

If A point K is the reflection of L (2,5) IN THE Y AXIS WHAT IS THE LENGTH OF KL

85. ## physics/light reflection

A light of ray is incident at an angle of 58degrees on the plane surface of a block of glass of refractive index 1.60. Some light is reflected on the other side of the normal at the same angle as the angle of incidence. Find: a.the angle between the light

86. ## Physics

The following four lenses are placed together in close contact. Find the focal length of the combination. Lens 1- F'= +200mm Lens 2- F'= -125mm Lens 3- F'= -400mm Lens 4- F'= +142.9mm

87. ## Stats

I ran this an an independent samples t-test. It is a t rest according to the professor, just want to make sure I have the right one. A researcher wanted to answer the following question: What is the difference in students' computer anxiety based on whether

88. ## stsats

A researcher wanted to answer the following question: What is the difference in students' computer anxiety based on whether or not they own computers? The researcher surveyed 92 undergraduate education students via an online survey. In the survey, the

89. ## Statistics

I bemieve the t test is paired , want to make usre beofre I run the stats. A researcher wanted to answer the following question: What is the difference in students' computer anxiety based on whether or not they own computers? The researcher surveyed 92

90. ## AP CHEMISTRY

1) Calculate the molarity of a solution of sodium hydroxide, NaOH,if 23.64 mL of this solution is needed to neutralize 0.5632g of potassium hydrogen phthalate. 2) It is found that 24.68 mL of 0.1165M NaOH is needed to titrate 0.2931 g of an unknown acid to

91. ## AP CHEMISTRY

A) At 800 K the equilibrium constant for I2(g) 2 I(g) is Kc = 3.1 10-5. If an equilibrium mixture in a 10.0-L vessel contains 3.44*10-2 g of I(g), how many grams of I2 are in the mixture? answer is .060g B)For 2 SO2(g) + O2(g) 2 SO3(g), Kp = 3.0*104 at 700

92. ## physics

You have arrived at a new planet and put your starship into a circular orbit at a height above the surface that is equal to two times the radius of the planet. Your speed is 4300 m/s and it takes 7 hours and 18 minutes to complete an orbit. a. What is the

93. ## math

A perfect minor wholetone is a frequency rtio of 10:9. A perfect major wholetone is a frequency ratio of 9:8. Are these noticeably different from an equal temper wholetone? (200 cents)

94. ## Chemistry (daltons law of partial pressure)

A mixture of toluene and water boils at 90 C, calculate the vapor pressure of toluene at this temperature. Assume the atmospheric pressure to be 760 mmHg. And secondly calculate the molar mass of toluene.

95. ## college chemistry

2h2o2(aq) ---> 2h2o(l) + o2(g) if someone puts 0.470 ml of hydrogen peroxide on a cut how many moles of hydrogen peroxide are used? Assume the density of the solution is equal to the density of water.

96. ## science

It is true that ______ a) few plants grow well around water b) plants are better able to seek water than are animals c) water covers about 95% of the plants d) the amount of water in the enivronment limits the kinds of organisms that can live there e)

97. ## Chemistry

I havent been at school for 8 days due to somthing wrong with my heart, but the teachers gave me work. I have no clue how to do them. I really need help please, There all due tomarrow. The air in a dry, sealed 2L soda bottle has a pressure of 0.998 atm at

98. ## physics

What are four situations where photovoltaic cells would have an advantage over other sources of electric energ?

99. ## Finance (common stock)

I need a formula for: A share of common stock of xyz ltd is expected to pay no dividends until next 2 years but at the end of year 2 it will pay \$2 as dividends. Dividends are expected to grow at 4% per annum into indefinite future. Assume that the