# Questions Asked onOctober 4, 2014

1. ## Algebra

A student scores 83 and 91 on her first 2 tests. Write and solve a compound inequality to find the possible values for a 3rd test score that would giver her an average between 85 and 90 inclusive. I know she has to score between 81 & 96 but I'm not sure

2. ## math

a hall charges \$30 per person for a sports banquet when 200 people attend. for every 10 extra people that attend, the hall will decrease the price by \$1.50 per person. what number of people will maximize the revenue for the hall?

3. ## physics

A car of mass 550 kg is moving at a speed of 1.5 m/s. A man pushes the car, increasing the speed to 3.2 m/s. How much work did the man do? A. 3435 J B. 2816 J C. 2197 J D. 4123 J

4. ## physics

You use an inclined plane to move furniture into a truck. You perform 224 kJ of work, but only do 91 kJ of useful work. What is the efficiency of the inclined plane?

5. ## statistic

A “Set” within quantitative theory represents…?

6. ## chemistry

The following equation represents the partial combustion of methane, CH4. 2CH4(g) + 3O2(g) > 2CO(g) + 4H2O(g) At constant temperature and pressure, what is the maximum volume of carbon monoxide that can be obtained from 3.39 x 102 L of methane and 1.70 x

7. ## Spanish

Write four different questions for the following sentences 1. Mariana canta en el coro (choir) de la universidad 2. Carlos busca el libro de arte 3. La profesora Gutierrez ensena contabilidad 4.Ustedes necesitan hablar con el profesor de economia

8. ## Science

Which of the following is not part of the cell theory? (1 point) Cells are the building blocks of life. All living things are made up of cells. All cells are created from other cells through cell division. The nucleus is the control center of the cell. 3.

9. ## Math

1. A strip of wood 78 inches long is to be cut into pieces 3 3/4 inches long. How many pieces can be cut? A. 12 B. 26 C. 20 D. 21 C?

10. ## chem

Consider the chemical reaction, 2Al + 3Cl2 → 2AlCl3. Here, 56 g of Al can produce 415.14 g of AlCl3 (Molar masses: Al = 26.98 g; Cl = 35.45 g). true or false

11. ## chem

consider the chemical reaction, 2Al + 3Cl2 -> 2AlCl3. here, 212.7 g of chlorine can produce a maximum of 266.66 g of AlCl3 (molar mass of Al = 26.98 g and Cl = 35.45 g) true or false

12. ## Math

a truck can be rented from company A for \$100 a day plus \$0.60 per mile and company B charges \$50 a day plus \$0.80 per mile to rent the same truck. Find the number of miles in a day at which the rental costs for company A and B are the same.

13. ## 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 :

14. ## Math

1.) An expression is show: √21x; for which value of x should the expression be further simplified? a.) 5 b.) 8 c.) 37 d.) 54 2.) An expression is show: √42x; for which value of x should the expression be further simplified? a.) 11 b.) 13 c.) 20 d.) 55

15. ## Chemistry

Use Lewis diagrams to show how electrons are shared to form covalent bonds in compounds with the following atoms. Write the formulas a) one carbon atom and four chlorine atoms i think i would share each of the four electrons of carbon with the chlorine

16. ## Algebra

If n is the set of natural numbers that are factors of 16, what is the set in roster form? My answer is 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16

17. ## Algebra

What is a solution for-the inequality y>1.9? -9 -2 2 1.9 My answer is if it has to be greater then 1.9 the answer must be 2.0 from those 4 choices.

18. ## Math

19. Paul can type 60 words per minute and Jennifer can type 80 words per minute. How does Paul's typing speed compare to Jennifer's? A. Paul can type 1/3 as fast as Jennifer. B. Paul can type 3/4 as fast as Jennifer. C. Paul can type 11/3 times as fast as

19. ## chem

how many moles of HCl will be produced when 30g of H2O are reacted according to the chemical equation 2AlCl3 + 3H2O -> Al2O3 + 6HCl? (molar masses are H2o=18.015g and HCl=36>46g)

20. ## Physics

An airplane dropping supplies to northern villages that are isolated by severe blizzards and cannot be reached by land vehicles. The airplane is flying at an altitude of 785m and at a constant horizontal velocity of 53.5 m/s. At what horizontal distance

21. ## accounting

Hamilton Company owns 51,600 of Hennie Company's 120,000 outstanding shares of common stock. Hennie Company pays \$33,000 in total cash dividends to its shareholders. Hamilton's entry to record this transaction should include a:

22. ## math

A jar contains 8 pennies, 3 nickels and 4 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the selected coins. Find the expected value of X.

23. ## science

An object of mass m is thrown vertically upwards.At what rate will its momentum change?

"The King of Mazy May" by Jack London Which detail helps you predict that Walt will face a series of unfortunate events? a) Lifting clear on the crest of a great jam off Indian River, Walt masters met with his first accident b) The poor brute plunged in a

25. ## chem.1

the volume of a sample of gas is 750ml at 75 degree celsius and 0.750atm.at what temperature in celsius will the sample occupy 1.000L under a pressure of 1.000atm?

26. ## physics

a projectile thrown at an angle Ө with the horizontal has horizontal range R and maximum height h. show that the tangent of the angle of projection is given by 4h/R

Find the break- even point if the selling price is \$8 per unit, variable cost \$3 per unit and fixed cost \$3000.

The Springer Company sells its product for \$20 per unit. Its fixed costs are \$10,000 and the variable cost per unit is \$10 What is the new break-even point if the price per unit increases from \$20 to \$30

29. ## Physics

A freight train has mass of 1.6 x 107 kg. If the locomotive can exert a constant pull of 760000 N, how long does it take to increase the speed of the train from rest to 79 km/h? Answer in units of min.

30. ## chemistry

How many atoms of oxygen are in 1.5L of carbon dioxide, CO2? (assume STP conditions)

31. ## Chemistry

a piece of silver contains 6.42x10^22 how many dozens does it contain

32. ## Combinatorics (math)

In a certain country, 40 roads lead out of each city. When all roads are open, it is possible to travel from any city to any other. Each road leads from one city to another; there are no dead end roads. If one road is closed for repairs, is it still

33. ## Algebra

|p-10|=20 p=30? My teacher says there has to be 2 solutions for the absolute value

34. ## History, Urgent

Early in the war, American Indians living in Indian Territory disagreed on which side to take. Which of the following best describes the split that occurred? A.groups split along religious lines (Christians vs. non-Christians) B.groups split along tribal

35. ## History, Urgent

Who negotiated with the five tribes to convince them to side with the South durnig the Civil War?

36. ## social studies

What kind of industry is diamond ring?

37. ## science

An electron drop to what energy level is likely to emit a photon in the infrared region?

38. ## History

Did Lincoln want to assimilate the American Indians to the American lifestyle?

You are carryingout TLC on normal phase plates. Compound A has an Rf of 0.4 and compound B of 0.6. What would happen to the Rf values if you increase the polarity of the mobile phase? For the compounds in question 1, you change to running them on reverse

40. ## us history 1 ch3 study guide

with an increasing population, the british clonists faced a shortage of what?

41. ## teaching/technology ch 5

computer storage that is long term and continues after the power to the computer has been turned off is?

42. ## AP Statistics

many companies "grade on a bell curve" to compare the performance of their managers and professional workers. this forces the use of some low performance ratings, so that not all workers are listed as "above average". Ford Motor company's "performance

43. ## Science

How fast will A 0.15kg baseball accelerate if a batter hits the ball with a force of 420Newtons?

44. ## Algebra

Suppose U = 1,2,3,4,5,6,7,8 is the universal set and P = 1,3,5,7, What is P? My answer is 1,3,5,7

45. ## Math

2. Lavina wants to buy a rocking chair for \$160. She will pay 10% down and pay the rest in six monthly installments. What will be the amount of each monthly payment? A. \$27 B. \$16 C. \$24 D. \$26 C?

46. ## chemistry

properties of the three state of matter.and seperation techique for silver chloride and sodium trioxonitrate(v)

47. ## chemistry

separation techniquesfor silver chloride and sodium trioxonitrate(v).and properties of the three state of matter.

48. ## union county

What is the annual opportunity cost of a checking account that requires a \$260 minimum balance to avoid service charges? Assume an interest rate of 2.5 percent.

49. ## math

If evies chicken lays 4 eggs in 5 days how many days will it take for evies chicken to 16 eggs?

50. ## HELP!

is nursing a science major?

51. ## Algebra

A soda machine has flavors cola, root beer, an lime.Second machine has lemon, orange, cola, and cherry. What represents all flavors in the 2 machines? My answer: cola, cola, root beer, lime, lemon, orange, and cherry

52. ## chem

the molar mass of NaCl is 58.45g. How many molecules does a gram of NaCl contain?

53. ## Algebra

Start from 110 feet away, a person on a scooter rides towards a checkpoint and then passes it. At what times is the scooter 40 feet away from the checkpoint? My answer is 2.3 to 4.6 seconds

54. ## Science

When you see lightning strike, you probably wil see thunder soon. Is this theory or law? I think its theory, what do you think

55. ## Algebra

Of 375 musicians some play only jazz band, some play only the marching band, some play both.If 250 play in the jazz band and 130 play in both, how many play in the marching band? My answer is 135

56. ## Chemistry

My prelab is telling me to find the initial concentrations of I(^-) and S208(^2-) given the following reaction: 25 mL of 0.2 M KI + 48.00 mL 0.2 M KNO3 + 1 mL 0.4 M Na2S2O3 + 1 mL starch + 25 mL 0.2 M (NH4)2S2O8 + 1 drop EDTA How do I calculate the

57. ## Physics

What should the theoretical maximum value of the uniform acceleration of a object freely rolling down an inclined plane and what would the angle of elevation be?

58. ## math evaluation

So how am I suppose to Evaluate the expression and put it in simplest form? It's 7th grade math. The question I need help on is: -8/3 + 1/4. If u comment and show me how u got an anwser THANKS!!!!!

59. ## statistics

In a major city 7 % of cars have an alarm system installed. A car without an alarm has a probability of 0.01 of being stolen, this is triple the probability of a car with an alarm being stolen. What is the probability that a car stolen from this city has

60. ## Physics

A basketball is thrown at 45° to the horizontal. The hoop is located 6.2 m away horizontally at a height of 1.1 m above the point of release. What is the required initial speed? I know that I need to use d = vit + (0.5)at^2, but I then get stuck. Thanks!

61. ## Algebra

z- 1/5 > 1/4 My answer is z < 9/20

62. ## p.e

It is important to choose simple carbohydrates for breakfast to get you started for your day. True False True? Thanks

63. ## math

Lester jogs 5 3/4 miles on each day that he jogs. Last month, he jogged a total of 115 miles. How many days did he jog last month?

64. ## Math

Scarlet-Camille needs three lengths of wood to finish a project. She needs one piece measuring 148 cm, one piece measuring 38 cm, and one piece measuring 42 cm. Every time Scarlet-Camille cuts a length of wood she loses 3 mm of wood. If Scarlet-Camille can

65. ## Ashford University

The untimely death of Professor Hathaway halted his groundbreaking research into the uses of solar power. It therefore appears that Hathaway’s research will not result in practical applications.

You are carryingout TLC on normal phase plates. Compound A has an Rf of 0.4 and compound B of 0.6. What would happen to the Rf values if you increase the polarity of the mobile phase? For the compounds in question 1, you change to running them on reverse

67. ## Math

Convert 86 inches to yards, feet, and inches? Why the inches again?

68. ## math

Solve 2s^3-4r^2 if r=1 and s=5 I did 2*5*5*5=250 4*1*1=4 250-4=246 I also added 2*5^3-4*1^2=246 Am I correct? Thanks

69. ## Math

A regulation baseball bat must be 2/3/4 inches or less in diameter and shorter than 42 inches long. Which bat would not be allowed? a)diameter 6cm b) length 0.9m c)diameter 7m d)length 1.0668m d?

70. ## Calculus

Find the equation of the tangent to the curve y=3x^2+4x which makes a 45 degree angle with the negative x-axis

71. ## 1333 math

Probability Scores 0.2 0 0.2 2 0.05 4 0.45 7 0.1 9 Find the variance of the above random variable random variable.

72. ## Math

6. If 31/2 pounds of bananas cost \$.98, how much would one pound cost? A. \$.20 B. \$.14 C. \$.28 D. \$.18 C? 7. A used car is priced at \$2,695. If you borrow the money for the car, your payments will be \$122 a month for 30 months. How much will you save by

73. ## chemistry

Identify the functional groups in menthol

2x+3(x-2)^2

75. ## Chemistry

My prelab is telling me to find the initial concentrations of I(^-) and S208(^2-) given the following reaction: 25 mL of 0.2 M KI + 48.00 mL 0.2 M KNO3 + 1 mL 0.4 M Na2S2O3 + 1 mL starch + 25 mL 0.2 M (NH4)2S2O8 + 1 drop EDTA How do I calculate the

76. ## Pre-Calc/Trig...

if h(x)=(fog)(x) and h(x)=3√x+3 find g(x) if f(x)= 3√x+2

77. ## Algebra

How do you solve the equation by completing the square X^2+4x=10

78. ## Physics

A car drives at 15 m/s and has an air resistance force of 277 N. What is the air resistance force at 30 m/s? A truck drives at 9.7 m/s and has an air resistance force of 380 N. What is the air resistance force at 32 m/s? A 85.0 kg skydiver is falling at a

79. ## Chemistry

My prelab is telling me to find the initial concentrations of I(^-) and S208(^2-) given the following reaction: 25 mL of 0.2 M KI + 48.00 mL 0.2 M KNO3 + 1 mL 0.4 M Na2S2O3 + 1 mL starch + 25 mL 0.2 M (NH4)2S2O8 + 1 drop EDTA How do I calculate the

80. ## science

A “Set” within quantitative theory represents…?

81. ## english

which sentence is correct? a) They are trying their best in the hope of winning the race. b) They are trying their best in the hopes of winning the race. c) They are trying their best in hope of winning the race. d) They are trying their best in hopes of

82. ## math

a 1000 seat multiplex is divided into 3 theatres. there are 310 seats in theatre A.theatre C has 180 seats then theatre B. how many seats are there in theatre b?

83. ## physics

The distance between two telephone poles is 54 m. When a 2.0 kg bird lands on the telephone wire midway between the poles, the wire sags 0.16 m. How much tension in the wire does the bird produce? Ignore the weight of the wire. Answer in units of N.

84. ## Math

How do you solve the equation by completing the square X^2+4x=10

85. ## Physics

A 7.80 kg particle starts from rest and moves a distance of 8.90 m in 2.60 s under the action of a single, constant force. Find the magnitude of the force.

86. ## Math

What is (-7)^5 in expanded form? A. -7x-7x-7x-7x-7 B. -7.5 C. (-7)x7x(-7)x7x-7 D. 5x5x5x5x5x5x5 Is the answer A? Thanks

87. ## chemistry

what is the concentration in ppm of Ag in a 245 lb of Ore that contains 83.5 g of silver?

88. ## algebra

find single- digit positive interger values x and y so the four numbers x++y, 3x+2y,8 and 9 can be combined to make 24.

89. ## accounting

Jesper Parnevik borrowed \$70,000 on March 1, 2012. This amount plus accrued interest at 12% compounded semiannually is to be repaid March 1, 2022. To retire this debt, Alex plans to contribute to a debt retirement fund five equal amounts starting on March

90. ## AS Physics

A driver leaves his car without applying the hand brakes on a road inclined at an angle of 25 degrees. The car starts to roll down the road with the driver chasing from behind after moving a distance of 20 m the speed of the car is 5.0 ms-1. Calculate the

91. ## physics

You overindulged on a delicious dessert, so you plan to work off the extra calories at the gym. To accomplish this, you decide to do a series of arm raises holding a 5.5kg weight in one hand. The distance from your elbow to the weight is 36cm , and in each

92. ## Physics

An object that starts from rest completes 7 revs in 3 seconds. What is angular accel. in rad/s2?

93. ## physics

A 74.0kg person is put on an exercise program by a physical therapist, the goal being to burn up 550 food calories in each daily session. Recall that human muscles are about 21.0% in converting the energy they use up into mechanical energy. The exercise

94. ## chemistry

8.10 g metal combines with 7.20g of oxygen to form X2O3. What is the relativ e mass of X

95. ## physics

Why in free fall condition the length of water column in capillary tube is equal to length of tube?h=2Tcos theta /drg where h is rise in? height ,T=SURFACE TENSION d=-DENSITY r=RADIUS OF TUBE AND g=ACCELERATION DUE TO GRAVITY explain from this formula how

-5y =3

97. ## physics

In free fall ,atmospheric pressure is also not present?i mean pressure is force per unit area ,so atmospheric pressure comprises force but? in free fall there should be only gravitational force so atmospheric pressure is not present in free fall?

98. ## physics

is sky diving free fall?i mean free fall is when the only force acting is gravitational force but in sky diving drag force also present? so how sky diving can be considered as free fall?

99. ## math

A person purchased a \$204,815 home 10 years ago by paying 10% down and signing a 30-year mortgage at 10.2% compounded monthly. Interest rates have dropped and the owner wants to refinance the unpaid balance by signing a new 30-year mortgage at 5.1%

100. ## physics

Find the magnitude of -A+B(vectors),where A(vector) = (31.3, 63.9) B(vector) =(88.5, -142.0)

In most cases with GLC the area under the peak as a % of the total area for all peaks is interpreted as representing the % mass of the compound measured in the mixture. Explain why this is only an approximation. I've tried to find the answer online but

102. ## Physics

A 55-kg block, starting from rest, is pushed a distance of 5.0m across a floor by a horizontal force Fp whose magnitude is 140N. Fp is parallel to the displacement of the block. The final speed of the block is 2.35m/s. a. How much work was converted to

103. ## statistics

how to identify the 5 W's in the problem of the student averages in a High School college algebra class for the last semester. the teacher wanted to see how well the class did and constructed the Distribution from the grade book. who- Students what-

-z/3= -18

105. ## Math

A 5x7 photo fits in a frame with a 2 1/4 inch boarder. What is the perimeter of the entire shape

106. ## Pre-Calc

The number of pounds of apples a cannery can produce and the processing cost are P(h) = 375h and C(n) = 0.35n + 1000 where P(h) is the number of pounds of apples that can be processed in h hours and C(n) is the cost of processing n pounds of apples. Use

107. ## Math Help

Find the inverse of the following function algebraically. Show all work. f(x)=-5√-4x+4+2

What is, through the eyes of Hollywood, a teenager? Within this arbitrary place, teenage movies unfairly label their characters "identities" such as absent minded jocks, affluent popular girls, academically obsessed students and rebellious wrongdoers. In

109. ## Math

20. Find the product of 987.2365 and 1,000. A. .9872365 B. .09872365 C. 987,236.5 D. 9,872,365 Ohh now I see it is C

110. ## Intro to Physical Science

Lucy the elephant jumps straight up from ground level with a speed of 6 meters/second. With what speed will she have just before she reaches the ground on her way back down? With no friction and then with friction.

111. ## Chemistry

How do I solve these problems You have 2000. g of aqueous NaOH solution. The percent by mass of the solute is 4.25%. How many grams of NaOH are in the solution? If you have 100.0 mL of a 25.0% aqueous solution of ethanol, what volumes of ethanol and water

112. ## Physics

A pilot points his aircraft due easy, while wind blows from the south. If the resultant velocity of the aircraft is 44m/s 22 degrees [n] of [e], at what speed does the wind blow?

113. ## science

a base jumper jumps from a height of 2500m, after 2.5s how fast was he traveling

114. ## Health

Education, Experiences, social and cultural expectations,and religious belies are called a listener's? A. messages B. obstacles to communication C. reference points D. Defense mechanisms I think the answer is C but just not sure.

115. ## Algebra 2 (Please, help me!)

What are the steps to performing the following transformation and then graphing it? Transformation: compress f(x) = |2x| - 3 vertically by a factor of 1/4.