# Questions Asked onApril 6, 2015

1. ## Calculus

Find the rate of change of total revenue, cost, and profit with respect to time. Assume that R9x) and C9x) are in dollars. R(x)=60x-0.5x^2 C(x)=5x+15 x=30 and dx/dt=20 units per day

2. ## civic education

list four limitations of human rights

3. ## Physics Fluids

When a block of volume 1.00 × 10–3 m3 is hung from a spring scale, the scale reads 10.0 N. When the same block is then placed in an unknown liquid, it floats with 2/3 of its volume submerged. The density of water is 1.00 × 103 kg/m^3. Determine the

4. ## Math

Ms. Allison drew a box-and-whisker plot to represent her students scores on a midterm test. These are the numbers on the box-and-whisker plot. Lowest value=44 Lower quartile=47 Median=52 Upper quartile=81 Highest value=96 Jason received 81 on the test. How

5. ## Math

A back-to-back stem-and-leaf plot showing the points scored be each player on two different basketball teams is shown below. Team 1 | | Team 2 6 1| 0| 3 7 8 4 2| 1|4 6 8 9 9 6 3| 2|5 7 Key: 4|0|2 means 4 points for Team 1 2points for team 2 What is the

6. ## Chemistry

What is the volume, in milliliters, required to prepare a. 20.0 mL of a 0.250 M KNO3 solution using a 6.00 M KNO3 solution b. 25.0 mL of a 2.50 M H2SO4 solution using a 12.0 M H2SO4 solution c. 0.500 L of a 1.50 M NH4Cl solution using a 10.00 M NH4Cl

7. ## Chemistry

Consider the reaction between acetylene, C2H2, and oxygen in a welding torch: If 5.4 moles of acetylene react with sufficient oxygen, how many grams of CO2 will be formed?

8. ## ET1210 DC/AC FUNDAMENTALS

if the resistance is halved and the voltage is not changed, what will happen to the current in resistive circuit?

9. ## Physics Fluids

A column of oil of height 70.0 cm supports a column of an unknown liquid. Assume that both liquids are at rest and that the density of the oil is 840 kg/m^3. Determine the density of the unknown liquid.

10. ## US History

Which was one objection of the ayatollahs to the rule of the shah of Iran? reduced influence of religion on the government women did not have enough opportunities insufficient acceptance of all people redistribution of wealth across the population

13. What is the best paraphrase of the first stanza? (1 point) I have a special place at the river where the wind goes through my hair and the ripples run across the river. I sometimes fish at the river. Sometimes I think about my life when I look at the

12. ## Physics Fluids

Water is flowing through a rectangular channel that is 12 m wide with a speed of 0.75 m/s. The water then flows into four identical rectangular channels that have a width of 3.0 m. The depth of the water does not change as it flows into the four channels.

13. ## Math

Which stem-and-leaf plot represents the data set below? 56,65,67,72,85,88,89,96,97,104,113 A. 5|6 6|5 7 7|2 8|5 8 9 9|6 7 1|04 1|13 Key:8|9 means 89 B. 5|6 6|5 7 7|2 8|5 8 9 9|6 7 1|0 4 1|1 3 C. 5|6 6|5 6 7 7|2 8|5 9 9|6 7 8 10|4 11|3 D. 5|6 6|5 7 7|2 8|5

14. ## math

Susie bought 5 kg of flour and 4 kg of sugar for \$14.80.If 3/4kg of flour cost as much as 3/5kg of sugar,find the cost of 1kg of sugar.

15. ## Physics

The university skydiving club has asked you to plan a stunt for an air show. In this stunt, two skydivers will step out of opposite sides of a stationary hot air balloon 2,500m above the ground. the second skydiver will leave the ballon 20 seconds after

16. ## Physics

an object falls from a 3m height what is the speed of the object just before it touches the ground?

17. ## Math

A survey of 594 studnets about the sports program at a school finds the following results: 495 students like the program 99 students think the program is inadequate. If a circle graph were made from the data, what would the measure of the central angle be

Poets use imagery and words with different connotations and denotations. In a paragraph, define and provide an example of imagery, connotation, and denotation. Then, explain how poets use these elements to contribute to tone in a poem. Support your answer

19. ## english

which sentence contains a participial phrase? a) she wanted to spend time writing. b) her job is giving the attic dwellers their food. c) quickly snatching up the coat, she ran to her room. d) to get along well requires cooperation. which sentence contains

20. ## english

2. Which of the following is the best reason to use visuals in a research presentation? A)) to illustrate your main point in an engaging manner B)) to illustrate any topic with data in percentages C)) to show different ways of looking at the same

21. ## Chemistry

Calculate the solubility of Ag2CrO4 in a) 0.05M KClO4 b) 0.005M AgNO3 a) I have figured out: Ag2CrO4=2Ag- + CrO42- Ksp=1.12*10^-12. Ksp=[2Ag]^2*[CrO4] Ksp=(2x)^2(x) = 1.12*10^-12=4x^3= x=2.65*10^-5 (?) b)Ag2CrO4=2Ag- + CrO42- Ksp=1.12*10^-12.

22. ## Physics

A 2.0kg object initially at rest explodes breaking into two pieces of mass 5.0kg and 15.0kg. If the 15.0kg piece moves with a speed 2m/s what is the speed of the 5.0kg piece? A. -6 m/s B. 15 m/s C. -5 m/s D. 20 m/s

23. ## Physics

a 12 kg physics book flies through the air with a momentum of 20kg m/s. what is its speed?

24. ## Physics

A 1-kg ball initially moving with a speed of 3m/s strikes a stationary 2kg ball head-on. After the collision both balls stick together. What are the final velocities of the two balls?

25. ## Differential Equation 4

A differential equation governing the velocity v of a falling mass m to air resistance proportional to the square of the instantaneous velocity is m dv/dt=mg-kv^2 where k>0 is a constant of proportionality. The positive direction is downward. (a)Solve the

26. ## algebra

How do I rewrite this equation using radicals instead of rational exponents? I rewrote the whole equation in simplest form 25x^(11/10)4√y How do I rewrite it with radical exponents?

27. ## Calculus

Evaluate dy/dt for 2xy-2x+2y^3=-10 with the conditions dx/dt=-4 x=2 y=-1 dy/dt=?

28. ## Math

Bob has designed a rectangular storage unit to hold large factory equipment. His scale model has dimensions 1 m by 2 m by 4 m. By what amount should he increase each dimension to produce an actual storage unit that is 9 times the volume of his scale model?

29. ## math

On Abby Ellen's graduation from law school, Abby's uncle, Bull Brady, promised her a gift of \$24,000 or \$2,400 every quarter for the next 4 years after graduating from law school. If the money could be invested at 6% compounded quarterly, which offer

30. ## AP CALC

At any time t=>0 , in days, the rate of growth of a bacteria population is given by y' = ky, where y is the number of bacteria present and k is a constant. The initial population is 1500 and the population quadrupled during the first two days. By what

31. ## English

Which sentence should be edited to eliminate its cliché? A. The texture of the burlap was a cross between woven straw and a three-day beard. B. The family was immensely relieved when Great-Aunt Martha's condition progressed from "critical" to "it looks

32. ## World History

I need help. In a brief essay, explain three ways in which the Roman Catholic Church responded to the spread of Protestantism in the sixteenth century. Describe each part of the church’s response using specific facts.

33. ## Physics

Which of the following household electrical appliances has the greatest rate of energy consumption? ITEM VOLTAGE CURRENT A. Video Camera 6.0 V 1.6 A B. Radio 4.5 V 0. 45 A C. Cassette Recorder 6.0 V 2.2 A D. Ghetto Blaster 12 V 1. 4 A .

34. ## math

write the equation of the line: a line that goes through the point (-1,5) and has a slope of 2/3

35. ## 1 question LA AM I RIGHT?

"The River" 1 I sit on the bank in my special place, 2 Feel the breeze that lifts my hair, 3 And watch the ripples run across the river. 4 It is so peaceful here. 5 Deep enough to justify a fishing pole, 6 Quiet enough for my every thought, 7 The perfect

36. ## Math Check

A bank offers two interest account plans. Plan A gives you 6% interest compounded annually. Plan B gives you 13% annual simple interest. You plan to invest 2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years?

37. ## Math

Carol has a collection of 100 stamps. The graph below shows the percentage of stamps she has from each country. France=24% Italy=25% England=22% Norway=29% How many of Carol's sta,ps are from Noraw than from France? A. 5 stamps B. 24 stamps C. 29 stamps D.

38. ## english

According to scholars, what is one way the advent of talking pictures changed the behavior of movie audiences

39. ## Chemistry

The ethylammonium ion, CH3CH2NH3+, has a pKa of 10.81. It reacts with water to form ethylamine, CH3CH2NH2 and H3O+. Which of the following statements is true at pH 7? A.) ethylamine predominates B.) ethylammonium ion predominates C.) the pH is higher than

40. ## Math

James is training for a marathon. Every week, he increases the distance he runs by 15%. If James is running 8.5 miles this week, how far will he be running 2 weeks from now? I did 30/100=x/8.5 . I thought that if I did 30 (for 2 weeks) instead of 15 (1

41. ## masterin quantum

Consider the left shift operator on the space of infinite sequences of complex numbers: L(z1,z2,…)=(z2,z3,…). Is L injective? Yes Yes - incorrect No Is L surjective? Yes Yes - correct No Find the eigenvalues and eigenvectors of L. Then complete the

42. ## Math

On Tuesday, Leslie spent 47 minutes on math homework, 39 minutes on science homework, 52 minutes on English homework, and 44 minutes on history homework. How much time did Leslie spend doing her homework on Tuesday?

43. ## Art im so sorry whoever is reading this

sorry it was about her i needed the painting of her by Ben Quilty what feeling are expressed in the painting still are there any websites please

44. ## English

How does Erik (the phantom) from The Phantom of the Opera show romance? i already mentioned about his relationship with Christine, but i need two more points.

45. ## calc

A company runs food service concessions for sporting events throughout the country. Their marketing research department chose a particular football stadium to test market a new jumbo hot dog. It was found that the demand for the new hot dog is given

46. ## Math

Determine whether it is possible to draw a triangle given each set of information. Sketch all possible triangles where appropriate. Calculate then label all side lengths to the nearest tenth of a centimetre and all angles to the nearest degree. A) b= 3.0

47. ## employment law

The bona fide occupational qualification: A. operates as a defense to claims for discrimination based on religion, national origin, gender, and age. B. has been found not to apply to sex discrimination cases. C. operates as a defense only to claims for

48. ## math

1. The cost C of joining FitFast Gym includes an initial membership fee of \$127, plus a monthly fee m of \$28. The cost of going to the gym is a function of the number of months of membership. Find the rule for the function. 2. Find the cost of using the

Determine whether it is possible to draw a triangle given each set of information. Sketch all possible triangles where appropriate. Calculate then label all side lengths to the nearest tenth of a centimetre and all angles to the nearest degree. A) b= 3.0

50. ## Differential Equation 3

(x^2+1) y^''+2xy^'=0 Solve for two power series solution about ordinary point x=0

51. ## Calculus

a 12 foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away from the building at 1 feet/second, how fast is the top of the ladder moving down when the foor of the ladder is 2 feet from the wall?

52. ## chem

A typical fluorescent light bulb contains argon gas and mercury vapor.? a. If the total gas pressure in a fluorescent light bulb is 307.1 Pa and the partial pressure of the argon gas is 306.0 Pa, what is the partial pressure of the mercury vapor? b. If a

53. ## Math

Find the next three terms sequence. -2,-12,-72,-432,.... A. -1,728, -6,912, -27,648 B. -1,728, -10,368, -62,208*** C. -2,592, -10,368, -41,472 D. -2,592, -15,522, -93,312 ASAP is good, but if not no prob!

54. ## Math

carla has several bags of candy that have different weights. Each x represents one bag. Carla wants the total weight of the bags to be four pounds. If she can only pick one more bag, which one should she pick

55. ## Telecommunication 2.

What is the frequency of a citizen's band(CB)radio which has a wavelength of 11.5meters?

56. ## Calculus

a 14 foot ladder is leaning against a building. If the bottom of the ladder is sliding along the pavement directly away from the building at 3 feet/second, how fast is the top of the ladder moving down when the foor of the ladder is 5 feet from the wall? I

57. ## physics

A car speeds up uniformly from rest so that it has a velocity of 30ms -1 after 20 second.How far does the car travel in first 10 seconds?

58. ## physics

A girl of mass 50kg runs up a flight of stairs.After 10 minutes she is 250 metres above the ground. Determine her average power output. Ignore the effects of friction.

59. ## social studiesssssssssssssssssssssssssssss

2. Why did the United States enter World War I? (Choose all that apply.) (2 points) U.S. leaders wanted German territory. U.S. leaders wanted to aid German efforts in the war. U.S. leaders believed Germany had violated international law. The U.S. economy

60. ## math

A nickel is 1/16 of an inch thick.Carrie has 7 nickels,what is the thickness of her 7 nickels?

61. ## Algebra

What is the square root of 49a^4+686a^3+2401a^2 Do NOT assume that a represents a positive number

62. ## mastering quantum mechanics

PART B (10 points possible) Consider the operator S on an n-dimensional complex vector space so that S(z1,z2,…,zn)=(0,z1,z2,…zn−1). Assume the inner product is the standard one: ⟨(x1,…,xn),(y1,…,yn)⟩=x∗1y1+…+x∗nyn. Calculate

63. ## algebra

how to solve 3/(x^2-9)-x/(x^2-6x+9)+1/(x+3)

64. ## Physics

Radio waves travel at the speed of light, which is 3.00 ✕ 108 m/s. What is the wavelength for a FM station broadcasting at 97.9 MHz (the prefix M is "mega" and means 106)?

65. ## Algebra

Jan received \$2,200 from her aunt as a birthday gift. She decided to put the money in an account to save for college. The account has a fixed interest rate of 7.7%, compounded annually. How much money will be in the account after five years?

66. ## Physics

What is the fundamental frequency on a 5 m rope that is tied at both ends if the speed of the waves is 24 m/s?

67. ## mastering quantum mechanics

Problem 3: Rotating a spin state (3 parts , 15 point) PART A (6 points possible) Consider the |+⟩ state of a spin one-half particle (as usual |±⟩=|z;±⟩) and apply to it the rotation operator R that rotates states by an angle θ around the y axis.

68. ## mastering quantum mechanics

Problem 4: Variational principle and bounds (3 parts, 30 points) PART A (15 points possible) Consider a particle of mass m in a box of size L so the wave function vanishes at x=±L/2. Find an upper bound E∗ on the ground state energy Egs using a simple

69. ## physics

An observer can describe the motion of an object as "translational" if

70. ## POL201:American National Government

Theodore Lowi suggested the remedy for cumbersome bureaucracy was (Points : 1) A)returning to juridical democracy. B) delegating even more authority. C) reducing the size of government. D) throwing money at the problem.

71. ## Science

Which two elements represent the same family of the periodic table? Hydrogen Helium Lithium Fluorine Is it none??

72. ## English

How does Erik (the phantom) from The Phantom of the Opera show romance?

73. ## physics

Consider eight two-cubic centimeter (2 cm3) sugar cubes stacked so that they form a single 2 x 2 x 2 cube. How does the surface area of the single, large cube compare to the total surface area of the individual eight cubes? Report your answer as a ratio.

74. ## Math

I have to find the median, the lower quartile, the upper quartile, minimum number, and maximum number of this data set I just want to make sure I am right. 73,73,78,78,81,87,89,92,93,95 My answers Median=84 Lower quartile=78 Upper quartile=92 Minimum

75. ## maths

i am thinking of a number i multiply it by 8 and subtract 163 i would get the same answer if i multiply by 3 and subtract 13

76. ## art

Sorry to bother you again its also this last question What feelings are expressed in the Margaret Olley? any websites in mind if yes thankyou so much

77. ## geometry

use the midpoint formula to find endpoint c. A = (-3, 2) B is midpoint (5, -4). I know AB is I/2 of AC. I tried and got x= 14, y= -11. Correct? and how do you graph it? Thanks

78. ## math

Estimate 99 9/19 + 1/5, Use benchmarks to estimate the total

79. ## Calculus

Let f(x)=(lnx)^4 f'(x)=4(ln(x))^3/x what is f'(e^2)=?

80. ## chemistry

how would you prove that sodium hydroxide is a base without wing litmus paper?

81. ## Chemistry

A 25.00 mL sample of HCl was titrated with 35.79 mL of 0.250 M KOH. The concentration of the HCl solution is:

82. ## Chem

The following represent the Ka values for a series of weak acids. Which would be the best choice to prepare a buffer at pH=4.00? 2.7 x 10^4 1.2 x 10^-4 4.3 x 10^-8

83. ## math

Determine whether it is possible to draw a triangle given each set of information. Sketch all possible triangles where appropriate. Calculate then label all side lengths to the nearest tenth of a centimetre and all angles to the nearest degree. A) b= 3.0

84. ## chemistry

calculate the density of NH3 gas at s.t.p.

85. ## algebra II

if a pitcher is just as likely to throw a ball as a strike, find the probability that t11 of his first pitches are balls.

86. ## Marketing

The text explains that the two central concerns of marketing are?

87. ## English

A _______ can be used for both organizing and revising an essay. A. graphic organizer B. flowchart C. verbal sketch D. topic sentence my answer is a.

88. ## Chemistry

How many grams of AlNO3 could be used to make the following prescription isotonic? Sol.Silver Nitrate 2.5% Sodium chloride q.s. Sterile water for injection There is only anhydrous dextrose 5% available

89. ## science

1.a ball with a mass 2kg rests on an incline with an angle of 10 degrees. The ball is released to roll down the incline plane neglecting all friction: Determine the following: A.the loss in potential energy after it has rolled 12m. B.the velocity after it

90. ## calc

Let f(x)=2x+15−19ex. Then the equation of the tangent line to the graph of f(x) at the point (0,−4) is given by y=mx+b for m=? b=?

91. ## Pre-Calculus

Convert from standard to vertex form: (x+5)(x+4) x^2+ 9x + 20 (x+3)^2 + 20 - 9 (x+3)^2 + 11

Given m

93. ## French (if correct translation/grammar)

Presque toutes les grandes histoires d'horreur sont également de grands romances, et histoire de Leroux d'un compositeur déformé et masqué, hantant l'opéra de Paris de labyrinthe comme un fantôme, racheté seulement par son amour pour un chanteur

94. ## Biology

Assume you had a round seed garden pea plant and you wanted to find out whether the round seed plant was homozygous or heterozygous. What would you do? (Round is dominant to wrinkled seed)

1.a train with a mass of 120mg accelerates uniformly on a horizontal track. The resistance to movement is 5N per kN of the mass of the train. The force in the draw bar of the locomotive is 80kN. Calculate A.The force required for the constant speed. B. The

96. ## physics

When using a double slit with light of wavelength 504 nm, it is observed that the 4-th order maximum of the interference pattern occurs at the positions of the first minimum in the diffraction pattern. If the width of the slits is 0.24 mm, what is in mm

97. ## geometry.

use midpoint formula to calculate the midpoint of AB. Name it point M and plot it in the graph. Calculate lengths AB, AM, MB. thanks for help.

98. ## Biology HELP

How do you know whether something is homozygous dominant or heterozygous dominant?

99. ## French

Is this sentence correct? J'adore quand il fait chaud.

100. ## physics

1. An electric pump, used to obtain water from 20 metres below the ground, is marked 5000W. a) If the pump operates as rated, how much energy is used to pump water every second? b) Describe the energy conversions that take place when the pump is used. c)

101. ## chemistry

a container with an initial volume of 6 liters at a temperature of 30 degrees celsius with a pressure of 2atm is changed so the temperature is now 90 degrees celsius and the volume is 8 liters. calculate the new pressure

102. ## Calculus 2 (Series)

Can anyone help me start this problem from beginning to end, along with explanations on how to go about the problem for a better understanding how to do this series problem? 1) Find the values of p for which the series is convergent. Summation notation

103. ## physics

a skier decides to ski down a hill inclined at 12 degrees to the horizontal. He pushes on his poles and starts to slide down the slope. If his initial speed after he stops pushing is 4.7 m/s and us= 0.28, how far will mr.grewal slide down the hill before

104. ## geometry

sorry about nos. A(-3, 2) B (5, -4).calculate midpoint. Calculate length of AB, AM, and MB. Thanks again

105. ## geometry

use diagram given: m

107. ## Life orientation

to what extent can itrapersonal conflict affect on choice of careet

108. ## Chemistry (isotonicity)

How many milligrams of NaCl should be used to make the following prescription isotonic? Dextrose anhydrous 2.5% Sodium chloride q.s. Sterile water for injection Ad 1L There is only dextrose anhydrous 5% available

109. ## algebra

Find a special factoring pattern for a difference of two sextics: (a^6-b^6).

110. ## physics

1. An electric pump, used to obtain water from 20 metres below the ground, is marked 5000W. a) If the pump operates as rated, how much energy is used to pump water every second? b) Describe the energy conversions that take place when the pump is used. c)

A hard-rubber or plastic comb rubbed against wool can often be shown to have a static charge. Why does a metal comb not readily show a static charge when rubbed against wool?

112. ## Math

An equation can be used to find the height of a child. Equation is h=2c. The child is 36 inches at 18 months. (12in=1ft) How tall will the child be when he is 5 years old?

113. ## history

what are three things about Washington that made him the overwhelming favorite for the first president of the United States?

114. ## employment law

If the employee taking FMLA leave has unused paid vacation or sick leave, the employer may: A. require the employee to use sick leave toward the FMLA leave, but not vacation. B. not allow any time to be taken under the FMLA. C. require the employee to use

115. ## Chemistry

Can anyone help me identify the solute and solvent in each solution with the steps if possible? Thanks! a. 10mL of acetic acid and 200mL of water b. 100.0g of water and 5.0g of sugar c. 1.0mL of Br2 and 50.0mL of methylene chloride

116. ## Math: Geometry

Joe is making a toy from a rectangular block of wood. He drills two holes, each with diameter 1.4 cm, through the block. The block of wood has length 15 cm, width 8 cm, and height 5 cm. a)What is the volume of the block before the holes are drilled? b)What

117. ## math

An equation can be used to find the height of a child. Equation is h=2c. The child is 36 inches at 18 months. (12in=1ft) How tall will the child be when he is 5 years of age?

118. ## geometry

if m

A bank offers two interest account plans. Plan A gives you 6% interest compounded annually. Plan B gives you 13% annual simple interest. You plan to invest 2,000 for the next 4 years. Which account earns you the most interest (in dollars) after 4 years?

120. ## Physics

You hold a hose 45 degrees to the horizontal and at a height of 1 m from the floor. The water reaches a maximum distance of 10 m from where you are standing. Now you place your thumb over the end of the hose to occlude the opening by 80%, which in turn

121. ## Physics

Assume the muscle is 37C and is separated from the outside air by layers of fat and skin. The layer of fat, at a particular location on the skin, is 2 mm thick and has a conductivity of 0.53 W/mK. Finally, the outermost epidermal layer is 0.1 mm thick with

1.a ball with a mass 2kg rests on an incline with an angle of 10 degrees. The ball is released to roll down the incline plane neglecting all friction: Determine the following: A.the loss in potential energy after it has rolled 12m. B.the velocity after it

123. ## Physics

On March 15, 2015 we observed the explosion of a star in our galaxy that is 250ly away. On what date did this explosion actually happen?

124. ## Socials

How does education affect population growth? How does limiting birth rate affect population growth?? Please give me some good ideas, I already have some but I need more because I have to write an essay so please give me as many ideas as u can :) very much

125. ## Physics

A rescue helicopter is lifting a man (weight = 868 N) from a capsized boat by means of a cable and harness. (a) What is the tension in the cable when the man is given an initial upward acceleration of 1.83 m/s2? (b) What is the tension during the remainder

126. ## English

I need to find 3 examples of figurative devices, and 2 examples of sound devices in Act II of Shakespeare's Othello play and write their effects(meaning + why Shakespeare decided to use these devices). Anyone have any suggestions for good lines within Act

127. ## chemistry

If 5.40 kcal of heat is added to 1.00 kg of ice at 0⁰C, how much liquid water at 0⁰C is produced? Show all calculations leading to an answer.

128. ## Physics

A hard-rubber or plastic comb rubbed against wool can often be shown to have a static charge. Why does a metal comb not readily show a static charge when rubbed against wool?

129. ## chemistry

The Kw of water varies with temperature. Calculate the pH of water at 46⁰C with a Kw = 1.219 x 10-14. Show all calculations leading to an answer.

130. ## Math

Explain in a variety of ways how you can distinguish the exponential function f(x)=2^x from the quadratic function f(x)=x^2 and linear function f(x)=2x. (Hint: Compare the rate of change using finite differences in table of values; identify a constant

131. ## math

joel runs 7 miles in 60 minutes. at the same rate ,how many miles would he run in 24 minutes

132. ## ET 1210 FUNDAMENTALS

IF THE VOLTAGE IS DOUBLED AND THE RESISTOR IS NOT CHANGED, WHAT WILL HAPPEN TO THE CURRENT IN A RESISTIVE CIRCUIT

133. ## calculus

A ball is thrown from an initial height of 130 feet with an initial upward velocity of 35ft/s . The ball's height H (in feet) after T seconds is given by the following h=130-6t-16t^2

1.a ball with a mass 2kg rests on an incline with an angle of 10 degrees. The ball is released to roll down the incline plane neglecting all friction: Determine the following: A.the loss in potential energy after it has rolled 12m. B.the velocity after it

135. ## Precal

Solve for x 9^x - 4 * 3^x +3=0 I know the 9^x = (3^x)^2

136. ## physics

Why the blood pressre in human greater at the feet than in the brain?

137. ## calculus

A ball is thrown vertically upward with an initial velocity of 128 feet per second, the ball’s height after t second is s(t) = 128t – 16t². Find the instantaneous velocity at 4 seconds.

138. ## algebra

Given that , show that =

139. ## physics

A vehicle expends an energy of 25000J while moving at a constant speed of 5 ms.what is the mass of vehicle?

140. ## algebra

A cubic polynomial function f(x) has leading coefficient -2 and intercepts the y-axis at 2. If f(1)=1, and f(-2)=-2, find f(-1) and write the complete function.

141. ## Differential Equation 5

Construct the Fourier series of the following periodic function. f(x)= cosx, -π≤x

142. ## Differential Equation 6

Solve. x^3 y^'''+5x^2 y^''+7xy^'+8y = t+e^(-t)

143. ## Chemistry

If you have 324 grams KBr and want to produce a 1.48 M solution in water how many grams of water are needed?

144. ## maths

Mary has 3 toys.Bob gives her another 3 toys.How much does Mary have now?

145. ## health

1.why is it necessary to make a pressure bandage for a bleeding injury a)to cover the wound so id does not get contaminated b)to create a barrier so the blood does not infect the rescuer c)to help stop the bleeding by applying continuous pressure****

146. ## chem

Alka-Seltzer contains the base sodium hydrogen carbonate, NaHCO3, which reacts with hydrochloric acid in the stomach to yield sodium chloride, carbon dioxide, and water. What volume of CO2 gas at 104.5 kPa and 311 K would be formed when 10.0 mL of 1.0 M

147. ## Science

I really need help with my science which is based on Galileo Galilei. I need information about his early life,education, his fun facts, his contributions,and how his contributions affect us. i got some information but i need help finding proper info.

148. ## physics

An elevator and its load have a combined mass of 1962 kg. Find the tension in the supporting cable when the elevator, originally moving downward at 7.5 m/s, is brought to rest with constant acceleration in a distance of 4.2 m.

149. ## math

How do I write complex and real roots? For example, if the real roots are 1, -1 and the complex roots are -i, i how do I write those down? It'd be x:1, x:-1, x:-i, x:i, correct? Or am I wrong?

150. ## English

What aspects of Langston Hughes's poetry did people not like in general?

13. What is the best paraphrase of the first stanza? (1 point) I have a special place at the river where the wind goes through my hair and the ripples run across the river. I sometimes fish at the river. Sometimes I think about my life when I look at the

152. ## PHYSICS

What power (in horsepower) is developed by a grinding machine whose wheel has a radius of 8.10 in and runs at 2.50 rev/s, when the tool to be sharpened is held against the wheel with a force of 43.0 lb? The coefficient of friction between the tool and the

153. ## psychology

analyse the tenants of psycholanalsis

154. ## physics

an 83.2 kg girl is standing on a frictionless ice surface through a 2.00 kg book at 12.6 m/s at what velocity does the girl move across the ice?

155. ## Chemistry

The Ka for the reaction of acetic acid and water is 1.8 x 10-5. Which of the following statements is true at pH 7? A.) there is much more acetic acid than acetate ion B.) there is more acetate ion than acetic acid C.) the concentration of acetate ion is

156. ## Math

Lisa takes a loan of \$10,500 at a 9% simple interest rate for 7 years. a. How much interest will she pay after 3 years? b. how much interest will she pay in total for the loan? a. \$2,835.00; \$6,615.00 b. \$8,280.00; \$9,720.00 c. \$13,598.00; \$19,194.00*** d.

157. ## English

Yesterday my American friend asked me how long I had been learning English. I said I had been learning English since middle school. He was surprised. And he said, ¡°Why do you learn English?¡± When we travel to foreign countries, have a conversation

158. ## intermediate algebra

3/(x^2-9)-x/(x^2-6x+9)+1/(x+3)

159. ## American History

Thomas Jefferson justified the Louisiana Purchase on the grounds?

160. ## IINFORMATION SYSYTEM

forwarding table using switches

161. ## physics

an Atwood machine with two masses 6kg and 10kg. What is the tension in the chord connecting the masses. Assume the pulley is frictionless and the rope massless. Take g=9.8m/s2

162. ## Math

Chocolate chip: Adults=5 Children=10 Peanut butter: Adults=8 Children=6 Oatmeal: Adults=7 Children=4 What percentage of the children chose penut butter? A. 70% B. 25% C. 30% D. 45% Is the answer B? Thank you

163. ## American History

Under the Budget Reform and Impoundment Act, the President?

164. ## 1 question omh help??

1 I sit on the bank in my special place, 2 Feel the breeze that lifts my hair, 3 And watch the ripples run across the river. 4 It is so peaceful here. 5 Deep enough to justify a fishing pole, 6 Quiet enough for my every thought, 7 The perfect place to

165. ## American History

Presidents often resort to the use of White House “czars” because

166. ## Science

what are some challenges to biodiversity

167. ## Differential Equation

Solve. x^3 y^'''+5x^2 y^''+7xy^'+8y = t+e^(-t) **guys pls give some solution. i need help. the answer couldn't teach me anything but the solution is.Tq

168. ## social studies

What incentive did Spanish explorers have for settling the Caribbean islands? a)spices and silks b)faster trade routes c)land for plantations*** d)abundant sources of furs

169. ## American History

The reason that the President is called the Commander-in-Chief in the Constitution is because the Framers wanted ***to provide the President with authority over the secretary of defense. Question 2. Question : Thomas Jefferson justified the Louisiana

170. ## Physics

Could someone show me how to work this? It's for a study guide I'm practicing, and I just can't seem to get the correct answer. The position of a 0.63 kg object attached to a spring is described by [x = (1.09 m) cos(3.11πt)] a) Find the object’s

171. ## physics

an archer shoots an arrow into a piece of wood. the arrow is traveling at 120km/h when it strikes the wood. the arrow penetrates 3.8cm into the wood before stopping. what is its average acceleration (in m/s squared) into the wood?

172. ## math

How do I find three ordered pair solutions for x-y=4

pkg1 pkg2 215 148 89 70 367 292 find the relative frequency of occurrence approach to determine the probability that a tube of toothpaste sold had packaging style 1

174. ## Accounting

1/2/15 Purchased patent (6-year life) \$521,580 4/1/15 Goodwill purchased (indefinite life) 395,170 7/1/15 14-year franchise; expiration date 7/1/2025 519,400 9/1/15 Research and development costs 169,890 Prepare the necessary entries to record these

175. ## math

andy and april shared pie.Andy ate 2/5 of the pie april ate 1/3 how much did they eat all together

176. ## physics

A car speeds up uniformly from rest so that it has a velocity of 30 ms-1 after 20 second. How far does the car travel in first 10 second?

177. ## physics

A car speeds up uniformly from rest so that it has velocity of 30 ms-1 after 20 seconds. Question/ How far does the car travel in first 10 seconds?

5. A long-time expert in your field who will guide and advise you in your start-up phase is called a/an A. mentor. B. investment counselor. C. contact. D. entrepreneur. My answer is b If not b then d But I'm bit sure I need help

179. ## English

2.The child was reluctant to (access/venture) into the closet at night because he was unsure whether child-eating monsters really inhabited it in the dark Venture? 3.Th Members of the student council(circulated/convened) promptly affter school to finish

180. ## Physics

A string is stretched by 2cm and its potential energy is u .if it is strechted by 10 cm,the potential energy is: A.u\5 B.5u C.10u D.25u

181. ## english

In the following sentences, what word does the participial phrase modify? Everyone in the annex heard her screaming loudly. (1 point) a) everyone b) annex c) heard d) her pl E A S E HE L P

182. ## Physics

A string is stretched by 2cm and its potential energy is u .if it is strechted by 10 cm,the potential energy is: A.u\5 B.5u C.10u D.25u

183. ## Government

1. Suppose that the Articles of Confederation are still in force and that a resolution has been proposed that would abolish the executive committee and replace it with a president. Now suppose that, out of the thirteen states, only Pennsylvania did not

184. ## Chemistry

Sodium vapor lamps are often used in residential street lighting. Sodium gives off two yellow lines of light having frequencies of 5.09 × 1014 Hz and 5.08 × 1014 Hz. What is this wavelengths of light in nm? would I start by using the following formula

185. ## physics

a soccer player kicks the ball of mass 0.4kg.the ball moves off at a speed of 4m/s. calculate the maximum height the ball could reach

186. ## Chemistry

0.688g of antacid was treated with 50.00ml of 0.200M HCl. The excess acid required 4.21 mL of 1.200 M NaOH for back-titration. What is the neutralizing power of this antacid expressed as mmol of HCl per gram of antacid? I think the answer should be:

187. ## Language Arts

I had to put transition words, fix any mistakes, and make the following paragraph better. It is on a book called Tuck Everlasting. It is a paragraph saying the similarities of the book and movie version. This is the best I could do. Can u see what you can

188. ## Finite Math

P(R or S)=.64 P(R)=.38 P(S)=.52 Probability Union Rule P(R and S)=P(R)+P(S)-P(R and S) .64=.38+.52-P(R and S) .54=.9-P(R and S) At this point, how do I deal with the -P(R and S)? I know the final answer is .26, but how do I get there?

189. ## physical science

What is the amplitude of a longitudinal wave

190. ## Math

1)How many real number solutions does the equation have? -8x^2-8x-2=0 A) One Solution B) Two Solutions C) No solutions D) Infinitely many solutions If someone could help me with this that would be great since I am confused. Thank you!

191. ## Accounting

Bus Acquired Cost Salvage Value Useful Life in Years 1 1/1/13 \$98,100 8,000 5 (straight-line) 2 1/1/13 129,000 11,900 5 (decline balance) 3 1/1/14 79,780 8,200 4 (units-of-activity) For the declining-balance method, the company uses the double-declining

192. ## math

The school raised \$1518.75 by charging an adult \$3.75 and a student \$2.50. The total attendance was 520. express each equation in slope-intercept form and graph each line ?

193. ## history

discuss inter-group relations

194. ## Science

H2) -----> H^+ + OH^- Is this equation balanced

195. ## Calculus

Cost: C^2=x^2+98*sq rt of x + 57 Revenue:890(x-4)^2+29R^2=26,100 Find the marginal cost dC/dx at x=4

196. ## physics

calculate the force of gravity between a newborn baby of mass 2.9kg and the obstertrician of mass 100kg, who is 0.48m from the baby.

197. ## Algebra

(t^(1/2)+2)^2

198. ## Chemistry

Instead of using ratios for back titrations we can also use molarities if our solutions are standardized. A 0.188g sample of antacid containing an unknown amount of triprotic base Al(OH)3 was reacted with 25.0mL of 0.101M HCl. The resulting solution was

199. ## English

Phantom of the opera. how does the theme of horror relate with Erik's (Phantom) face deformity?

200. ## Physics

1. A point on the edge of a large wheel of radius 0.45 meters moves through an angle of 170o at a constant angular velocity of 0.25 radians/sec. . (a) Find the length (in meters) of the arc described by the point. (b) Find the linear velocity (in m/sec) of

201. ## science

100mL of oxalic acid (H2C2O4) requires 35mL of 0.04M KMnO4 to titrate it to the endpoint. calculate the molarity of the oxalic acid.

202. ## physics

2. On the spin cycle on a washing machine, the drum holding the clothes goes from zero to 180 rpm (revolutions per minute) in 8.0 seconds. (Hint: Be sure to change rpm to radians/sec.) (a) What is the angular acceleration (in radians/sec2) during this time

203. ## Science

what is an isotope

204. ## Physics

Two disks are originally separated. The mass of Disk #1 is 1.5 kg, and the mass of disk #2 is 2.6 kg. Disk #1 has a radius of 10 cm, and it is rotating at an angular velocity of 15.0 rad/sec. Disk #2 has a radius of 15 cm, and it rotates in the opposite

205. ## Math

Transform the graph of f(x)=3^x to sketch g(x)=3^−(x+1) −2. Show table of values and each transformation clearly to get full marks. (15,marks)?

206. ## math

There are 9 red gum balls, 5 green gum balls, 8 yellow gum balls, and 8 blue gum balls in a machine. Find P(green, then yellow)

207. ## science 1 question

4. When a fan is turned on, it changes electrical energy into __________ energy. (1 point) motion magnetic gravitational*** electromagnetic

208. ## social studies

1.which of the following was a positive effect on the industrial revolution a)cities became overcrowded b)militarism c)fascism d)depression

209. ## Math

Your teacher made the comment that more than 100, 00 ping pong balls would fit in the school gym. develop a calculation method to see if she is right. after taking some measurements, propose the amount the gym would hold. i din't really understand how to