# Questions Asked onMarch 15, 2015

1. ## Maths

There are 50 students in a class of which 40 are boys and the rest are girls the average weight of the class is 44kg and the averageweight of the girls us 40kg. find the average wieght of the boys

2. ## life orientatiton

three disadvantages for student to student to study at the institution of higher education through nfsas

3. ## Please check my calculus

A conical tank has a height that is always 3 times its radius. If water is leaving the tank at the rate of 50 cubic feet per minute, how fast if the water level falling in feet per minute when the water is 3 feet high? Volume of a cone is V=1/3(pi)r^2h A.

4. ## Calculus

For how many values of x will the tangent lines to y=4sinx and y=x^2/2 be parallel? A. 0 B. 1 C. 3 D. 4 E. Infinite Thanks.

5. ## Chemistry

What will happen to the number of moles of SO3 in equilibrium with SO2 and O2 in the following reaction in each of the following cases? 2 SO3(g) equilibrium reaction arrow 2 SO2(g) + O2(g) ΔH° = 197 kJ (a) Oxygen gas is removed. increase decrease stay

6. ## calculus check

If siny=cosx, then find dy/dx at the point (pi/2, pi) A. -1 B. 0 C. 1 D. pi/2 E. None of these I got C

7. ## Calculus check

An equation of the line tangent to y=sinx+2cosx at (pi/2, 1) is A. 2x-y=pi-1 B. 2x+y=pi+1 C. 2x-2y=2-pi D. 4x+2y=2-pi I got A

8. ## Chem

Silver nitrate and aluminum chloride react with each other by exchanging anions as shown below. 3 AgNO3 (aq)+ AlCl3 (aq) → Al(NO3)3 (aq) + 3 AgCl (s) How many moles of AgCl is produced when 1 mol of AgNO3 reacts with 1 mol of AlCl3?

9. ## trig

A gear with a radius of 32 centimeters is turning at pi/9 radians/sec. What is the linear speed (velocity) at a point on the outer edge of the gear?

10. ## algebra

Yoko runs 3 miles in 25 minutes. At the same rate, how many miles would she run in 20 minutes?

11. ## Math

Which of the following is true about a trend line for data? A. The minimum data point always lies on the trend line. B. Every data point must lie on the trend line. C. The trend line describes the pattern in the data if one exits. D. The trend line

12. ## math

A cell phone company charges by the minute (and partial minute) for a phone call. Arionna’s plan includes 300 minutes in the \$20 base cost. If she uses more than 300 minutes, there is a \$5 overage fee and an additional charge of \$0.25 per minute. Which

13. ## math

A square brass plate is 2 mm thick and has a mass of 1.05 kg. The density of the brass is 8.4 g/cm3. Calculate the length of the plate in centimeters.

14. ## life orientation

the similarities and differences between funza lushaka and nfsas

15. ## World history

"It was a town of red brick, or of brick that would have been red if the smoke and ashes had allowed it; but as matters stood, it was a town of unnatural red and black like the painted face of a savage. It was a town of machinery and tall chimneys, out of

16. ## SPanish

In the spaces provided, write the vocabulary expression that could replace the underlined words in each sentence without significantly changing the meaning of the sentence. Do not use any of the underlined words again. ¿Viste el artículo en el periódico

17. ## Calculus

If the limit as x approaches infinity (6x^2/200-4x-kx^2)=1/2, then k= A. 3 B. -3 C. 12 D. -12 E. -3

18. ## PHYSICS

The gravitational forces of the Earth and the Moon are attractive, so there must be a point on a line joining their centers where the gravitational forces on an object cancel. How far is this distance from the Earth's center?

19. ## Calculus

Let f be a function such that the limit as h approaches 0 [(f(5+h)-f(5))/h]=4. Which of the following must be true? I. f(5)=4 II. f'(5)=4 III. f is continuous at x=5 A. I only B. II only C. III only D. I and II only E. II and III only

20. ## Calculus check

Find the equation of the line tangent to y=tan2x at x=pi/8 A. y-1=sqrt(2)(x-pi/8) B. y-1=1/2(x-pi/8) C. y-1=1/4(x-pi/8) D. y-1=2(x-pi/8) E. y-1=4(x-pi/8) I got A

21. ## life orientation

compare in five ways the similaritie and differences between nfsas and other student loans.

22. ## Statistics

The time it takes a technician to fix a computer problem is exponentially distributed with a mean of 15 minutes. what is the probability that a). it will take a technician less than 10 minutes to fix a computer problem? b) it will take a technician between

asked by Leo Elvis
23. ## math

An arc AB of length 5cm is marked an a circle of radius 3cm. Find the area of the sector bounded by this arc and the radii from A and B.

24. ## Calculus

If f'(x)=sinx and f(pi)=3, then f(x)= A. Cosx+4 B. Cosx+3 C. -cosx+2 D. -cosx-2 E. -cosx+4

25. ## math

18 students in the class play baseball.17 students play basketball. 30 students play either or both. select the venn diagram that shows the number who play baseball and basketball?

26. ## Algebra

Is the inequality below sometimes, always, or never true? -2(2x + 9) > -4x + 9 A. always B. sometimes C. never C ?

27. ## math

A straight line passes through the point (-1,2) and its distance from the origin is 1 unit. Find the equation

28. ## FINANCE

Below is a list of account balances for Currie Hospital as of December 31, 2013. Prepare a balance sheet as of December 31, 2013, in proper form. (Hint: You will need to compute the net assets account. Assume that all net assets at the beginning of the

29. ## math

Samantha has five objects weighing 1kg,2kg,3kg,4kg and 5kg. If she weighs them two at a time, how many different weighs can she get?

30. ## english

how to unscramble letters to find name of country : 1. NLCIGSAD 2. NNSHOADE

31. ## 1 History Question

How did the War Production Board play a role in coordinating American war efforts during World War II? It was the government agency that worked with corporations to produce what the military needed. It was the agency that determined when and where troops

32. ## math

area of a sector of a circle of radius 36 cm is 54 pie cm square . find the length of the corresponding arc of the sector

33. ## GEOMETRY

Two circles with radii a and b touch each other externally . Let c be the radius of a circle which touches these two circles as well as their common tangent to the two circles . Then relate a,b and c through an equation

34. ## life orientation

compare in five ways the similaritie and differences between nfsas and other loans.

35. ## Chemistry

Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 70 mL of the concentrated HCl, adding it to water, and diluting to 0.500 L. Calculate the approximate molarity of this solution from the

36. ## 12th Grade

What career can I study if I am doing this subject: Mathamatical literacy ,Accounting , Economics And Business studies anyone who can help?

37. ## Calculus check

The smallest slope of f(x)=6x^2-x^3 for 0 is less than or equal to x is less than or equal to 6 occurs at x= A. 0 B. 2 C. 3 D. 4 E. 6 I got E

38. ## precal

demoivre theorem (2sqrt3+2i)^5 r=(2sqrt3+2)^2

39. ## Algebra

Name the property of real numbers illustrated by the equation. -4(x + 3) = -4x - 12 A. Associative Property of Multiplication B. Associative Property of Addition C. Distributive Property D. Commutative Property of Addition B or A ? I think its B

40. ## MATH

Suppose that 3% of all adults suffer from diabetes and that 29% of all adults are obese. Suppose also that 2% of all adults both are obese and suffer from diabetes. (a)Find the probability that a randomly chosen adult is obese, given that he or she suffers

41. ## History

What is the difference between little p Progressivism and big P progressivism?

asked by Tay B
42. ## physics

Calculate the gauge pressure inside a soap bubble 0.0002m in radius using the surface tension for soapy water

43. ## algebra

Insert , or = to make the sentence true. SQR3 SQR7 A. > B. < C. = C?

44. ## physics

At the beginning of a new school term, a student moves a box of books by attaching a rope to the box and pulling with a force of F = 88.9 N at an angle of 56◦ , as shown in the figure. The acceleration of gravity is 9.8 m/s 2 . The box of books has a

45. ## chemistry

Calculate how many grams of O2(g) can be produced from heating 31.8 grams of KClO3(s).

46. ## chemistry

Suppose a reaction has the equilibrium constant K = 2.3 10-7 at a particular temperature. Will there be a large or small amount of unreacted starting material present when this reaction reaches equilibrium? a)There will be a small amount of unreacted

47. ## physics 10

1.) 100 kJ of heat is added to 600g of zinc at 20 C and 75g of it melts. If the specific heat of zinc is 0.385 kJ/kg-C and it melts at 420 C. What is its heat of fusion? 2.) If all the heat lost by 1kg of water at 0 C when it turns into ice at 0 C could be

48. ## Statistics

in 2000, the averages change of tax preparation was \$95. Assuming a normal distribution and a standard deviation of \$10. What proportion of tax preparation fees were more than \$95.

asked by Leo Elvis
49. ## chemistry

CaSiO3(s) +6 HF (g)-> CaF2(aq) + SiF4 (g) + 3 H2O(l) If a 65.6 g sample of CaSiO3 is reacted in an inert 83 L container at 25.5°C with HF at 1.00 atm pressure find the following. a. the mass of water, and CaF2 produced in the reaction and the mass of HF

50. ## Science Help

A projectile is launched at 15 degrees and it's landing height is the same as the launch position. If this is true, then at what other angle can the projectile be launch to achieve the same horizontal displacement?

51. ## Account

Howie Stars produces starts for elementary teachers to reward their students. Howie Stars' trial balance on June 1 follows "HOWIE STARS Trial Balance June 1, 2012" Balance Account Title Debit Credit Cash \$14,000 Accounts receivable 155,000 Inventories:

52. ## Physics

Two horizontal forces Upper F1 Baseline and F2 act on a 3.6 kg disk that slides over frictionless ice, on which an xy coordinate system is laid out. Force F1 is in the positive x direction and has a magnitude of 7.1 N. Force F2 has a magnitude of 9.3 N.

53. ## Algebra

If an angle, x, is in standard position, and P(-3, 4) is a point on the terminal side of the angle, what is the value of sin x?

54. ## math

In a class of 30 students,18 study Geography 3 take neither a) Display this information in a venn Diagram?

asked by Larivita John
55. ## math

from the top of a light house 40 m above the water the angle of depression of a small boat is 60 degree .find how far the boat is from the base of the light house

56. ## business math

marylin was supposed to pay \$1460 to Bernice by March 2. Some time later Marylin paid Bernice an equivalent of \$1552.84, allowing for a time value of money of 3.9% compounded monthly. When did marylin make the payment?

57. ## Maths

In a class of 39 pupils, 1/4 of the girls wear spectacles and 2/3 of the boys wear spectacles. A total of 16 pupils in the class wear spectacles. How many girls do not wear spectacles? Answer preferably in model method please.

58. ## accounting

A compound transaction was recorded as follows: debit Equipment, \$5,000; debit Cash, \$1500; credit Accounts Payable, \$3,500. This error would cause __________. A. assets to be overstated B. assets to be understated C. liabilities to be overstated D.

59. ## math

Two cylindrical containers are similar. The larger one has internal cross- section area of 45cm^2 and can hold 0.945 litres of liquid when full. The smaller container has internal cross- section area of 20cm^2. (a) Calculate the capacity of the smaller

60. ## Calculus check

A function f(x) is continuous for all x and has a local minimum at (1,8). Which must be true? A. f'(1)=0 B. f' exists at x=1 C. The graph is concave up at x=1 D. f'(x) is less than 0 if x is less than 1, f'(x) is greater than 0 if x is greater than 1 E.

61. ## math

Asha, Nangila and Cherop contributed shilling 60,000,shilling 85,000 and shilling 105 000 respectively. They agreed to put 25% of the profit back into business each year. They also agreed to put aside 40% of the remaining profit to cater for taxes and

62. ## Physics

You have a solution that contains Ca2+ ions and another that contains Na+ ions. How would adding a solution that contains CO2-3 ions enable you to tell which is which?

63. ## math

A farmer has 100metres of fencing from which to build a rectangular chicken run. He intends to use two adjancent walls for two sides of the rectangular enclosure. Determine a formular for the enclosed area in terms of X?

64. ## math

A cord AB of length 4cm divides a circle of radius 3.3cm into two segments.find the area of each segment.

65. ## math

write an equation of a circle with the given center and radius. center (–7 –3) and radius 13

66. ## AP CALC

1. Let f be a twice-differentiable function such that f (2) = 8 and f (4) = 5. Which of the following must be true for the function f on the interval 2 ≤ x ≤ 4. I. The average value of f is 6.5 II. The average rate of change of f is -1.5 III. The

67. ## chemistry

An aqueous solution contains 64g of ethanol( C2H5OH) in 122 grams of solution. The mole fraction of ethanol is:

68. ## Calculus

A conical tank has a height that is always 3 times its radius. If water is leaving the tank at the rate of 50 cubic feet per minute, how fast if the water level falling in feet per minute when the water is 3 feet high? Volume of a cone is V=1/3(pi)r^2h A.

69. ## chemistry

The power of the equation ΔG° = –RT ln(K) is that K can be determined from tabulated values of ΔG°f. Use the tabulated values of the Gibb's energy to determine K for the reaction, 2AB(l) ↔ 2A(g) + B2(g), at 298K. (R=8.314 J/K mol or R=0.008314 kJ/K

70. ## algebra

Evaluate the expression for the given value of the variable(s). -x2 - 4x; x = –3 A. –17 B. 11 C. –1 D. 3 d ?

71. ## science

air masses that form over land are moist true or false

72. ## Calculus check

Let f(x) be a polynomial function such that f(3)=3, f'(3)=0 and f"(3)=-3. What is the point (3,3) on the graph y=f(x)? A. Relative maximum B. Relative minimum C. Intercept D. Inflection point E. None of these I got C

73. ## science

What is the mass of air in a room meauring 30 cubic meters if the density of air is 1.3kg per cubic meter?

74. ## chemistry

CaSiO3(s) +6 HF (g)-> CaF2(aq) + SiF4 (g) + 3 H2O(l) If a 65.6 g sample of CaSiO3 is reacted in an inert 83 L container at 25.5°C with HF at 1.00 atm pressure find the following. a. the mass of water, and CaF2 produced in the reaction and the mass of HF

75. ## physics

A 55 grams copper calorimeter contains an unknown mass of water at 18 degrees celcius. When 755 grams of alloy at 100 degrees celcius is dropped into the calorimeter ,the resulting temperature is 20.4 degrees celcius. Determine the mass of water.

asked by john ralph
76. ## Calculus 2 Trigonometric Substitution

I'm working this problem: ∫ [1-tan^2 (x)] / [sec^2 (x)] dx ∫(1/secx)-[(sin^2x/cos^2x)/(1/cosx) ∫cosx-sinx(sinx/cosx) ∫cosx-∫sin^2(x)/cosx sinx-∫(1-cos^2(x))/cosx sinx-∫(1/cosx)-cosx sinx-∫secx-∫cosx sinx-sinx-∫secx =-ln |secxtanx|+C Can

77. ## Math

Name all the quadrilaterals that have two pairs of parallel sides and all angles congruent

78. ## Calculus check

Given f(x)=x^4(2x^2-15). On what interval(s) is the graph of f concave upwards? A. (0, sqrt(3)) B. (-sqrt(3), 0) C. (-sqrt(3), 0) and (0, sqrt(3)) D. (-sqrt(3), sqrt(3)) E. (Negative infinity, -sqrt(3)) and (sqrt(3), infinity) I got E

79. ## Algebra

the perimeter of a rectangle is 62 m. The length is four more than two times the width. What is the length?

80. ## Dynamics

an 800 lb cannon fires a 5 lb cannonball in a horizontal direction. the cannon sits on a skid; the kinetic coefficient of friction between the skid and the horizontal surface is .25. if the cannonball has a speed of 650 ft/s when it leaves the cannon,

81. ## chemistry

a) calculate the concentration of your unknown (Gatorade) using correct units Note if you did not run the Gatorade use absorbance =0.205 abs units in order to calculate the concentration of the dye in the Gatorade b) calculate of % T for an absorbance of

82. ## physics

A 450 kg car traveling north at 30 m/s collides with a 560 kg car traveling west at 35 m/s. If after the collision they become entangled and move off together, (a) what is magnitude of the final momentum of the cars? (b) What is their final speed of the

83. ## Statistics

the age of costumers for a particular retail store follows a normal distribution with a mean of 37.5 years and a standard deviation of 7.6 years. what is the probability that the next costumer who enters the store will be less than 42 years old?

asked by Leo Elvis
84. ## Biuret & Lowry Method

Hello I want to ask several questions about Lowry and Biuret method. 1. Lowry Reagent C are prepared freshly. Why? 2. Why Folin Reagent kept in dark bottle? 3. Order of addition of reagent is important for preparing Lowry Reagent C. Why? 4. We prepare

85. ## Math

If the standard error of measurement is 3, and a person scores 125, Standard error of measurement with one standard deviation would put the score at ____?

86. ## Financial

If a corporation pays a dividend, which group receives priority in receiving the dividend? bond holders holders of common stock holders of preferred stock dividends are evenly divided by holders of common and preferred stock

87. ## Calculus

If y=3x-7, x is greater than 0, what is the minimum product of x^2y? A. -5.646 B. 0 C. 1.556 D. 2.813 E. 4.841

88. ## math

If the point (a,0) and (0,b) and (1,1) lie on the same line, prove that 1/a + 1/b=1

89. ## Calculus

If f(x) is a continuous function with f"(x)=-5x^2(2x-1)^2(3x+1)^3 , find the set of values for x for which f(x) has an inflection point. A. {0,-1/3,1/2} B. {-1/3,1/2} C. {-1/3} D. {1/2} E. No inflection points

90. ## Chemistry

Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 10-8 M. What is the pH when half the acid has been neutralized? 'I got 7.82 by using the HH formula but its wrong, help.

91. ## Probation and Parole

2) According to psychoanalytic theory: A. behavior is the result of operant conditioning. B. crime is the result of positive reinforcement. C. conscious behavior is the result of unconscious thought. D. all of the above I'm stuck and need help!!! I believe

92. ## business math 2

If the demand equation for a particular commodity is y=28-5x, where y is the unit price in pesos and x is the quantity in units, find the total revenue function and marginal revenue function.

93. ## math

Two cylindrical containers are similar. The larger one has internal cross- section area of 45cm^2 and can hold 0.945 litres of liquid when full. The smaller container has internal cross- section area of 20cm^2. (a) Calculate the capacity of the smaller

94. ## Chemistry

Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 10-8 M. What is the pH when half the acid has been neutralized? 'I got 7.82 by using the HH formula but its wrong, help.

95. ## Algebra

1. Solve log(4/x) (x^2 - 6) = 2. (note: the (4/x) is underscored) 2. Show that loga [(x + {sqrtx^2-5}) / 5] = -loga (x - (sqrtx^2-5))

96. ## History

What is the difference between little p Progressivism and big P progressivism?

97. ## English

1. I'm very happy because I can go to school and study now. 2. I'm very happy that I can go to school and study now. 3. I'm very happy I can go to school and study now. -------------- Are both the same in meaning? Which one is popular, 'because' or 'that'?

98. ## maths

an equilateral triangle is inscribed in a circle of radius 40cm. what is the length of the sides of the triangle

99. ## chemistry

H2(g)+ o2(g)-> H20(l) (delta)Hf(h20(l)=-286 kj/mol the total volume of hydrogen needed fill the hindenberg was 2.3 x 15^5 m^3. what is the theoretical yield of heat (that which could have been evolved) when the hindenberg exploded, assuming all the

100. ## biology

Hello, I am having trouble with a question on my homework. Even after reading through my notes and textbook I am still not sure what the answer is. I think the answer is the new paramecium is able to reproduce sexually and asexually.Here is the question:

101. ## physics

The system is frictionless and the trolley accelerates to the left at 3m/s squared. (a) calculate the unknown mass M. (b) calculate the magnitude of the forces in each string.

102. ## physics electromagnetism

Two long parallel vertical wires 0.3m apart are. ' placed east-west of one another. The current in the westerly wire is 30A and on the other 20A. The horizontal component of the earths magnetic flux density is 2*10^-5. Find the force per unit length on

103. ## Language arts

What's third person point of view?

asked by My name :)

sqrt2/2^2

105. ## Chemistry

Ammonium nitrate (NH4NO3) is an important agricultural industrial chemical as it provides readily available nitrogen for plant growth, and one can buy 50. pounds of ammonium nitrate for \$38. Urea (CO(NH2)2) is an attractive alternative, and, not being a

106. ## Calc

Find the derivative of: 1. Xlog base e (log base e X) 2. log base x 7 3. (sinh x)^2 - (cosh x)^2

107. ## calculus

1.) Find the derivative of ((x + 3)/e^x) ^ (Log e X) 2.) T/F (log e X)' = (log e |x|)' 3.) T/F (Log e 7x)' = (log e x)' 4.) Find the derivative of e^(log e 7x)

108. ## math

Two towns P and Q are 400 km apart. A bus left for P and Q. It stopped at Q for one hour and then started the return to P. one hour after the departure of the bus from P, a trail also heading for Q left P. the trailer met the returning bus ¾ of the way

109. ## Calculus

Given the function f(x)= sqrtx a) Let M= f´´(50) and N=f''(49). Argue on that f´´(x) lies between M og N if x =]49,50[ (Tip: show that f´´(x) is increasing function, that is look at f´´´(x)). b) Use the numbers from parta a) and define K as the

110. ## chemistry

hi I have a hard time understanding the following question: The

111. ## Early Childhood Education

Lesson Plan for 3 year olds: See If I am doing it correctly. Goal: To teach how to recognize the first and last letter of their names. Objective: The children will identify and name the first and last letter of their names. Standards Include: Georgia Early

112. ## Please check my Calculus

f(x)=x^n , where n is a positive integer greater or equal to 2. The graph of f(x) will have an inflection point when n is A. Even B. Odd C. Divisible by 3 D. For all values E. For no values I got B.

113. ## Please check my calculus

If x^2+xy-y=2, find dy/dx My answer: (2x+y)/(1-x)

114. ## Physics

An F-18 with a weight of 22500 lbs lands on a carrier with a speed of 120 mph. If the run-out of the arresting cable is 160 ft, what is the planes acceleration in feet per second squared?

115. ## Physic

1. Evaluate dF/dr when r=10,000, given that F= GmM/(r^2) and that F decreases by 3N/m when r=20,000. 2. The lowest point of a 5 meter long ladder is pulled away from a wall at 0.3 meters/sec. Find the rate at which the angle between the ladder and the wall

117. ## math

How do I write one equations in slope-intercept form, and three other lines in slope-intercept form that are perpendicular to the first line ?? Please Help, Thank you =)

118. ## Science

A dicot seed is preferred over a monocot seed to observe seed structure because? a.Distinct embryonic axis or b.Proper sepration of cotyldeons

119. ## Chemistry

Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 10-8 M. What is the pH at the equivalence point? I used the HH formula and got pH=7.52+log(.222)=6.87, but its not right.

120. ## precal

how do you use demoivre theorem for (-1+i)^7

121. ## English help

In Star Wars: a new hope when did a father-son(uncle) experience separation?

122. ## LAST history question

Why did the US government require rationing of some goods during World War 2? A. to provide food and supplies to war refugees in Europe B. to increase the demand for certain items to increase the profit made by selling them around the world C. to decrease

123. ## Calculus

For f(x)=x^2/3(x^2-4) on [-2,2] the "c" value that satisfies the Rolle's Theorem is A. 0 B. 2 C. +or-2 D. There is no value for c because f(0) does not exist E. There is no value for c because f(x) is not differentiable on (-2,2)

124. ## Math Geometry - Please check my answers!

There's a line graph with 3 dolphins (it's the same dolphin at different spot of the jump) jumping out of the water and landing (they formed a parabola). The Y-axis represents Height in feet and the X-axis represents Time in Seconds. The points are (10,0),

125. ## precal

demoivre theorem (2-2i)^8

126. ## Algebra

Please check my answer and let me know if it is right or not. 25+.32m(800)=281 28+.30(400)=148 70+40+2(30+.29)=830 +.29m

127. ## physics/chemistry

Okay so I want to solve for refractive index. I'm given the dielectric constant and the permeability M. From what I understand the refractive index is frequency dependent. I'm just unsure what equation to use. n=(Er)^1/2 does not work because the

128. ## Programming in Java

Write a program to calculate adjacent and opposite of a triangle. My code can calculate hypotenuse but won't calculate opposite and adjacent.

129. ## English

1. There were 40 seats for older children in the front and benches for little children at the back. 2. There were 40 seats for older children at the front and benches for little children in the back. -------------------------------------- Which preposition

130. ## Calculus

The integral of sqrt(x)(sqrt(x)+1) dx A. 2(x^3/2+x)+c B. x^2/2+x+c C. 1/2(sqrt(x)+1)^2+c D. x^2/2+2x^3/2/3+c E. x+2sqrt(x)+c

131. ## math

The apocalypse started in NY where 100 people were infected. From there the zombie apocalypse continued to spread. After 17 minutes the number of people infected 200 people.assume that no human have figured out how to kill the zombie or stop it from

132. ## calculus

What is the limit, as x approaches 1, of (sqrt(x) - 1)/(x - 1)? I need to show work, but I know the answer is 3/2, because I confirmed with a TI-89.

133. ## English Literature

I read William G Mcloughlin's essay "Pietism and the American Character" and I didn t understand anything I need a brief summary of the main ideas

134. ## Algebra

Solve for x: (x-a)/b +(x-b)/a = b/(x-a) +a/(x-b)

asked by Fred Rand
135. ## Social study

how can we find place on a map

136. ## english

'to claim exemption' means? I think it means to ask for or to claim for privilege Am i right?

137. ## Math - Equations

Just learned equations and want to know if i am doing write.. 4y= 2x-2 2y=2x6 ans (-7,-4) x+2y=7 3x-2y= -11

138. ## math

The concentration (in milligrams per liter) of an antibiotic in the blood is given by the geometric series A + Aekt + Ae2kt + + Ae(n − 1)kt where A is the number of milligrams in one dose of the antibiotic, n is the number of doses, t is the time between

139. ## Calculus check

The limit as x approaches 1 (x^3-1)/(x^2-1) is I got 3/2

140. ## physics/chem

Okay so I want to solve for refractive index. I'm given the dielectric constant and the permeability M. From what I understand the refractive index is frequency dependent. I'm just unsure what equation to use. n=(Er)^1/2 does not work because the

141. ## Chemistry

Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 10-8 M. What is the pH at the equivalence point? I used the HH formula and got pH=7.52+log(.222)=6.87, but its not right.

142. ## MATH EQUATIONS

Just learned equations and want to know if i am doing right 4 problems. 4y= 2x-2 2y=2x6 ans (-7,-4) x+2y=7 3x-2y= -11 ans (-1,4) 4x-3y= -20 5x-7y= -64 ans (4,12) 2x-5y=-1 3x+2y=8 ans (2,1)

143. ## math

In the year 2003, the population of a certain district was 1.8 million. Thirty percent of the population was in the age group 15-40 years. In the same year, 120,000 people in the district the Voluntary Counseling and Testing (VCT) contra for an HIV test.

144. ## math

David bought a new car for shilling 800,000. After 5 years, he sold it through a second-hand car dealer. The dealer charged a commission of 4% for the sale of the car. If David received shilling 480,000, calculate the annual rate of depreciation of the

145. ## science

Describe what happens to the electricity produced at 25kV by a power station when its transmitted to a house at 230 V many miles away.

146. ## algebra

if x =3x then evaluate 8x squared +4x

147. ## algbera

What is the corresponding temp in 77 degrees Fahrenheit to degrees celsio us

148. ## biochem

How would I calculate blood glucose levels if using standard curve ...and I have three samples and their absorbence at 420 nm.

149. ## chem

Calculate glucose levels using standard curve when you have absorbence for sample

150. ## Physcis

You are traeling back and forth on a 10m straight lane. You go forth in 10 sec and back in 4 seconds,forwards again in 5 s and back again in 1 seconds. what is ur displacement. and what is your average speed