# Questions Asked onJanuary 25, 2013

1. ## Physics

A guitar string is 90cm long and has a mass of 3.8g . The distance from the bridge to the support post is L=62cm , and the string is under a tension of 540N . What are the frequencies of the fundamental and first two overtones?

2. ## math

A culture of bacteria grows exponentially. It doubles in size every 16 hours. How long will it take to triple from its original size?

3. ## PHYSICS 2

Two resistors have resistances R(smaller) and R(larger), where R(smaller) < R(larger). When the resistors are connected in series to a 12.0-V battery, the current from the battery is 1.99 A. When the resistors are connected in parallel to the battery, the

4. ## Pre Calculus 12

permuations an orchestra has 2 violinsts, 2 cellisst, and 4 harpists. Assume that the players of each instrument have to sit together, but they can sit in their own group. In how many ways can the conductor seat the members of the orchestra in a line? I

5. ## Chemistry

Imagine that a hypothetical life form is discovered on our moon and transported to Earth. On a hot day, this life form begins to sweat, and it is determined that the heat of vaporization of its sweat is 155 cal/g. The scientist observing the

6. ## Physics

A rowboat crosses a river with a velocity of 3.30 mi/h at an angle 62.5° north of west relative to the water. The river is 0.795 mi wide and carries an eastward current of 1.25 mi/h. How far upstream is the boat when it reaches the opposite shore?

7. ## maths(matris)

two sides of a rectangle differ by 3.5cm.find the dimentions of the rectangles if its perimeter is 67cm?

8. ## chemistry

Write a balanced chemical equation for the reaction that occurs when dimethylether, , is combusted in air. Express your answer as a balanced chemical equation. Identify all of the phases in your answer.

9. ## Geography

What kind of map could you use to show information about a city? -a relief map -a population density map -a political boundary map -a vegitation map -All of the above You can pick as many as you want, but the question is only worth one point. I think the

10. ## Statistic

An airline experiences a no-show rate of 6%. What is the maximum number of reservations that it could accept for a flight with a capacity of 160, if it wants the probability of accommodating all reservation holders to be at least 95%.

Given the curve x^2-xy+y^2=9 A) write a general expression for the slope of the curve. B) find the coordinates of the points on the curve where the tangents are vertical C) at the point (0,3) find the rate of change in the slope of the curve with respect

12. ## Physics

An electron experiences 1.2 x 10^-3 force when it enters the external magnetic field, B with a velocity v. What is the force experienced by the electron if the magnetic field is increased two times and the velocity is decreased to half? Okay so I know

13. ## Math

The charges on a monthly water bill came to \$0.86 per cubic meter of water used, plus a service charge of \$4.49. Last month Jeremy's water bill came to \$69.85, how many cubic meters of water had he used?

14. ## chemistry

1-butanol (shown below) burns in the presence of oxygen to give off carbon dioxide and water by the following reaction: C4H9OH + 6 O2 ==> 4 CO2 + 5 H2O If 40.88 mL of 1-butanol burns completely, how many grams of 1-butanol have burned? grams =33.1 bu then

15. ## chemistry

Calculate the energy of a photon of electromagnetic radiation at each of the following wavelengths.503 nm(wavelength of maximum solar radiation) i need help please!

16. ## Chemistry 12

which of the following 0.10M solutions is basic? A LiCl B K3Po4 C NaCLO4 D NH4NO3 Is it C?

17. ## Finance

1. Chapter 7 of the Bankruptcy Act is designed to do which of the following? a. Protect shareholders against creditors. b. Establish the rules of reorganization for firms with projected cash flows that eventually will be sufficient to meet debt payments.

18. ## physics

A 47.0-g Super Ball traveling at 26.5 m/s bounces off a brick wall and rebounds at 20.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.10 ms, what is the magnitude of the average acceleration of the ball during

19. ## math

Find the area of the following circle. r = 9 yd.

20. ## math

Select the number that matches the written value: three hundred twenty-one thousandths

21. ## physics 2

A charge, q1, of +4.4 micro-coulombs and another unknown charge, q2, are surrounded by a surface. The total flux through the surface is -9.2 x 106 (N m2)/C. These charges are now placed on the x axis. q1 is placed at x = 0, and q2 is placed at x = +114.51

22. ## Math

An airline experiences a no-show rate of 6%. What is the maximum number of reservations that it could accept for a flight with a capacity of 160, if it wants the probability of accommodating all reservation holders to be at least 95%?

23. ## Calculus

1. Find the area of the region between the curves y=sin(x pi/2) and y=x. 2. Find the area of the region between the curves y=sin(x), y=sin(2x), x=0, and x=pi/2.

24. ## Physics conceptual

You hold an inflated balloon over a hot air vent in your house and watch it slowly expand. You then remove it and let it cool back to room temperature. During the expansion, which was larger: the heat added to the balloon or the work done by the air

25. ## Science

Which of the following is NOT a characteristic that all organisms share? Select one: a. ability to taste and smell b. ability to use energy c. ability to grow and develop d. ability to sense and respond to change

26. ## Math

While shopping for a party,June bought 2 1/6 pounds of hamburger, 4 1/2 pounds of chicken, and 3 pounds of ham.How much meat did she buy?

27. ## chemistry

what is the [OH-] in a solution that contains 0.225g of NaOH in 0.250 L of solution

28. ## Analytic Geometry

Find the equation of a circle passing through (3,7) and tangent to the line x-3y+8=0

29. ## grammar

Carina was inspected at that time, which appeared sharp with no mucosal lesions noted. 2% Lidocaine was instilled over the carina. Right main stem bronchus was inspected next. Opening to the right upper lobe was inspected, however 2 areas of abnormality

30. ## Physics

Your friend of mass 150 can just barely float in fresh water. Find her volume.

31. ## Calc

Evaluate the integral or show that it diverges: Integrand 0, lower, to 3, upper, (1/x)dx. a. infinity b. negative infinity c. 0 d. ln 3 e. none of the above

32. ## dress making

1. Which one of the following is the most complete and accurate definition of fiber? A. A stringy substance from plants B. The hair of an animal C. Man-made threads and yarns D. Basic raw material from which fabric is made 2. An example of a natural fiber

33. ## Algebra

Suppose that the annual interest rate on your checking account is 7.5 percent compounded continuously. In order to have \$ 6300 in 7 years, how much should you deposit now? Assume, that the current balance is \$ 0.

34. ## art

When looking at fabrics, an interior designer will focus on these characteristics.

35. ## spanish

Fill in the blank with the right word(s) La reina y la princesa siempre :

36. ## Math

assume the substance has a half-life of 11 years and the initial amount is 126 grams. How much remains at the end of 8 years?

A company uses the function C(x)=20.50+2000, where C is the cost and x is the number of units it produces, to determine its daily costs. Find the inverse of the function and determine how many units are produced when the cost is \$625,000.

38. ## Calculus

A rock is thrown off of a 100 foot cliff with an upward velocity of 45 m/s. As a result its height after t seconds is given by the formula: h(t)= 100+45t-5t^2 The height after 6 seconds is 190 What is the velocity after 6 seconds?

39. ## Statistics

A college’s data about the incoming freshmen indicates that the mean of their high school GPAs was 3.4, with a standard deviation of 0.35; the distribution was roughly mound-shaped and only slightly skewed. The students are randomly assigned to freshman

40. ## physics

Mason lifts a box off the ground and places it in a car that is 0.50 meters high. If he applies a force of 8.0 newtons to lift this suitcase, what is the work done?

41. ## math help

It is 2 1/2 miles to The end of The trail. If paula runs to The end and back in 60 minutes, What is The average speed in miles per hour

42. ## physics 101

a converging lens has a focal length of 10.0 cm. find the location of the image for object distances of a) 40.0cm b) the magnification

43. ## math help

Solve: 0.01÷(0.01÷0.001)

44. ## math help

Solve: 4 1/4 + (2 1/6 - 1 1/3)

45. ## Chemistry 12

define the term strong bronsted lowry acid it is 100% ionized in solution? is that it?

46. ## Math

19-(3-x) = 5x. Can u show your work please? I know how to solve questions like these but couldn't figure it out with that x after the 5 '

47. ## Calc

Line L is tangent to the graph of y= x- (x^2/500) at the point Q a) find the x coordinate of point Q B) right an equation for line L C) suppose the graph above were a hill (measured in feet). There is a 50 foot tree growing vertically at the top of the

48. ## Physics

Four identical metallic objects carry the following charges: +7.0 µC, +9.0 µC, -4.6 µC, and -1.2 µC. The objects are brought simultaneously into contact, so that each touches the others. Then they are separated A) What is the final charge on each

50. ## math help

Write 5.62*10^5 in standard form

51. ## math help!

(2-√2)/(3+√2) can you plz tell me how to solve it? plz hurry up

52. ## chemistry

balance net Ionic solution AgNo3 + NaOH

53. ## Physics #16

Two particles, with identical positive charges and a separation of 2.65 10-2 m, are released from rest. Immediately after the release, particle 1 has an acceleration 1 whose magnitude is 4.25 103 m/s2, while particle 2 has an acceleration 2 whose magnitude

54. ## elementary math

i did use my poof to prove. im not sure im doing right. here is exercises: 'Suppose a,b,c are integers if a|b and a|c, then a|(b+c).' my answer: Proof. Suppose a|b ans a|c. By Definition of divisibility. we know a|b means there is an integer x with b= ax.

55. ## Physics #43

A spring with an unstrained length of 0.076 m and a spring constant of 2.6 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 5.09 10-3 kg and

56. ## math help

What number is 5/8 of 24

57. ## Physics #48

An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is σ = 1.67 10-7 C/m2, and the plate separation is 1.35 10-2 m. How fast is the electron moving just before it reaches the

58. ## math help

Solve: 3 3/4 ÷(5 1/2-2 1/5)

59. ## Physics #66

Two charges are placed on the x axis. One of the charges (q1 = +9.3 µC) is at x1 = +3.4 cm and the other (q2 = -20 µC) is at x2 = +8.9 cm. (a) Find the net electric field (magnitude and direction) at x = 0 cm. (Use the sign of your answer to indicate the

60. ## Math

Working with linear equations: 3(2x+1) - 4 (x+2) = 9

61. ## Calculus

Find the arc length given the equation y=(x^4/8)+(1/4x^2) [1,3]

62. ## Calculus

Find the arc length given the equation y=(x^4/8)+(1/4x^2) [1,3]

63. ## math help

It was 96 kilometers from perry to medford. David raced to medford and idled back. If the round trip took 8 hours, what was his average speed in kilometers per hours?

64. ## Math

I am a 4digits number with 6 hundreds and 5ones.The sum of all my digits is 15 .What number am I

65. ## Statistics

The Tribune claims that the time of travel from downtown to the University via the bus has an average of µ = 27 minutes. A student who normally takes this bus believes that µ is greater than 27 minutes. A sample of six ride times taken to test the

66. ## math help

Pistachios were priced at 3 pounds for \$ 6.99. (a) what were the price per pound? (b) how much would 10 pounds of pistachios cost?

67. ## math help

Write 5.62*10^5 in standard form

68. ## math help

Solve: 3 3/4÷(5 1/2-2 1/5

69. ## physics

Two wires have the same cross-sectional area and are joined end to end to form a single wire. The first wire has a temperature coefficient of resistivity of α1 =0.00603 (C°)-1 and a resistivity of 5.00 x 10-7Ω m. For the second, the temperature

70. ## Calculus

1. Find the area of the region between the curves y=sin(x pi/2) and y=x. 2. Find the area of the region between the curves y=sin(x), y=sin(2x), x=0, and x=pi/2.

71. ## chemistry

Tell how to make a 1 M solution of Mg3(PO4)2 and a 0.1 M solution of CaSO4.

72. ## math30

Children’s meals are being prepared for a large gathering. There is an equal number of chicken, hamburger, and fish meals. Each meal comes with a toy: a ball, a parachute toy, or a Frisbee. There are twice as many balls as Frisbees and an equal number of

73. ## math30

A committee is to be formed to investigate what activities teenagers have available in small communities. The committee is to have 7 members, chosen randomly from interested community members. There are 10 parents, 5 teenagers, and 4 adults without

74. ## Chemistry..

What is the name of ZnCl2O6?

75. ## statistics

Suppose that you are evaluating two different alternatives. The inflated cost stream for alternative A is \$8,000 for year 1, \$9,000 for year 2, \$12,000 for year 3, 12,000 for year 4, and \$13,000 for year 5. The inflated cost stream for alternative B is

76. ## chem hwk help!

Given the following reaction: 3 CaCl2 + 2 H3PO4 Ca3(PO4)2 + 6 HCl How many grams of H3PO4 are needed to react completely with 1.837 g of CaCl2? I don't understand at all

77. ## accounting

simple plant manufactures DNA test strips

78. ## PHYSICS *_* HELP PLEASE

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 6 g. Find the reading of the

79. ## PHYSICS

When the resistors are connected in series to a 12.0-V battery, the current from the battery is 1.73 A. When the resistors are connected in parallel to the battery, the total current from the battery is 10.1 A. Determine the two resistances.

80. ## Calculus

the slope of the tangent line to the curve y=(3/x) at the point (6,0.5000) is? the equation of this tangent line can be written in the form y=mx+b where m is? and where b is?

81. ## chemistry

If the temperature of a 500.0-g sample of liquid water is raised 2.00c how much heat is absorbed by the water?The specific heat of liquid water is 4.184j/(g*c)

82. ## Calculus

Let f(x)=3x^4-2x^2+3 a) find f'(x) Answer: f'(x)=12x^3-4x b) find the slope of the line tangent to the graph of f at x=3. Answer:312 So I got those firs two right but what I need help with is part C which is c) find an equation of the line tangent to the

83. ## Chemistry

Calculate the heat of solution of LiOH if addition of 25.0g of LiOH causes the temperature of 120.0ml of water to rise from 20.0 celcius to 29.0 celcius.

84. ## math

To find 6x8 i can use the facts for 5x4 and 1x4. do you agree, if so explain

85. ## Math

How to find scale factor of dilation: A-(-1,2) B-(2,5)

86. ## Physics

You hold an inflated balloon over a hot air vent in your house and watch it slowly expand. You then remove it and let it cool back to room temperature. During the expansion, which was larger: the heat added to the balloon or the work done by the air

87. ## Math

A \$20,000 deposit was placed in a bank paying 5.75% interest compounded quarterly. After 12 months, how much interest was earned.

88. ## Math

Why is it essential to use distributive property in algebraic equations

89. ## Calc

Compute the average value of f(x) = x/(x+3) over the interval [-a,a], 0 < a < 3. a. 1 + (3/2a)ln[(3-a)/(3+a)] b. 2a + 3ln[(3-a)/(3+a)] c. 3/(9-a^2) d. 1/(2a) e. None of the above

90. ## History

What special events occurred during the 1980’s involving our government?

91. ## math help

Write 5.62*10^5 in standard form

92. ## Analytic Geometry

Find the equation of a circle passing through and tangent to the line x-3y+8=0

93. ## MATH

THE ANGLE OF A TRIANGLE ARE IN RATIO 1:2:7 CALCULATE ALL THE ANGLES

94. ## Physics

When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? The distribution of mass in the earth is spherically symmetric. The density of the earth is the same everywhere. The earth's interior

95. ## math

all of my shoes are red except 2 all of my shoes are blues except 2 all of my shoes are brown except 2 how many pairs of shoes do i have?

96. ## Physics

When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? -The distribution of mass in the earth is spherically symmetric. -The density of the earth is the same everywhere. -The earth's

97. ## Physics HELLLPPPP

When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? -The distribution of mass in the earth is spherically symmetric. -The density of the earth is the same everywhere. -The earth's

98. ## Math

A rectangular writing pd is 5/6ft long by 1/2ft wide. A border is to be added round all sides of the writing pad. Use the formula P=2L + 2W to determine the length of the border.

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the

100. ## geometry

how to rationalize the denominator

101. ## math

A version of the Two-Transversal Proportionality Corollary states, "If three or more parallel lines intersect two transversals, then they divide the _______ proportionally."

102. ## physicss

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the

103. ## Chem hwk

Using the equation N2 + 3H2 yields ==> 2NH3 , determine how many grams of ammonia will be produced when 233 grams of hydrogen is consume

104. ## Calculus

what is the limit as x goes to infinity of (8x^3-10x^2-2x)/(3-10x-11x^3)? what is the limit as x goes to NEGATIVE infinity of (8x^3-10x^2-2x)/(3-10x-11x^3)?

105. ## Analytic Geometry

Find the equation of a circle passing through (3,7) and tangent to the lines x-3y+8=0 and y=3x. Please help me

106. ## calculus

let f(x)=(x^2+2x-15)/(3x^2+12x-15) Find the horizontal and vertical asymptotes of f(x).

107. ## Calculus

Find the indicated one sided limits of f. f(x)= (x^2+8)/(x^2-25) what is the limit as x goes to -5+(from the right side)? What is the limit as x goes to 5+(from the right side?

108. ## Math

Jennifer started with \$50 in her savings account. Each week she withdrew \$10. The amount of money in her savings account after x weeks is represented by the function f(x) = 50 - 10x. Find the intercepts.

109. ## science

an 8000g tugboat exerts a force of 6000N, what is its acceleration?

110. ## calculus

A rock is thrown off of a 100 foot cliff with an upward velocity of 45 m/s. As a result its height after t seconds is given by the formula: h(t)= 100+45t-5t^2 The height after 6 seconds is 190 What is the velocity after 6 seconds?

111. ## physics

Santa is riding the elevator and is standing on a scale. his mass is 135 kg. what does the scale read before the elevator starts moving?

112. ## chemistry

balance the equation c2h4(g)+o2(g)---c(s)+h2o

113. ## Calculus

The displacement (in meters) of a particle moving in a straight line is given by s=2t^3 where is measured in seconds. Find the average velocity of the particle over the time interval [10,13]. the average velocity is 798 What is the instantaneous velocity

114. ## Calculus

Suppose that an object moves along an s-axis so that its location is given by s(t)=t^2+4t at time t.(Here is in meters and is in seconds.) (a) Find the average velocity of the object in meters per second over the time interval t=2 to t=9 seconds. Average

115. ## Calc

Evaluate the integral (3x+4)/[(x^2+4)(3-x)]dx a. (1/2)ln(x^2+4) + ln|3-x| + C b. (1/2)arctan(x/2) + ln|3-x| + C c. (1/2)arctan(x/2) - ln|3-x| + C d. ln|(sqrt(x^2+4)/(3-x))| + C e. None of the above

116. ## Calc

Find the limit as x approaches 0: (e^x^2-1)/(2x^2) a. 0 b. 1/2 c. infinity d. does not exist e. none of the above

117. ## Geometry-Solve for x

ok so I have to solve for x in this problem. and I have tried and tried to figure it out but I cant. 12(4x-2)=9(3x+2) I distributed them but after that when I try to simplify im lost. can someone please help???

118. ## Calc

Calculate the area under the curve y=e^-x above the x axis on the interval [1, infinity). a. infinity b. 0 c. -1/e d. 1/e e. none of the above

119. ## Physics

To rearrange the furniture in your room, you need to exert a force of 20 N to push your desk 10 m. How much work do you do?

120. ## Calc

Find the area between the x axis and the graph of y = (2e^x)/(1+e^(2x)) a. e^2 b. pi c. pi/2 d. 2pi d. none of the above

121. ## chemistry

an iron supplement is used to treat anaemia and 50mg of iron 2 is required per tablet.if the iron compound used in the tablet is FeSO4.7H2O,what mass of this compound would be required per tablet to provide the desired amount of iron 2?

122. ## math help

Write 5.62*10^5 in standard form

123. ## science

what is the problem with not using the metric system

124. ## Geometry- Steve

Hey Steve, in the proportion 9/x=15/25 would you cross multiply 9 and 25 and x and 15???

125. ## Math - 8th Grade

I need help please. I answered (c)incorrectly. Chantal and Julia ride horses in the same race. Chantal's horse finishes in one minute and 59.53 seconds. If Julia's horse runs 2.25 percent slower than Chantal's, how long does it take Julia's horse to finish

126. ## Physics

An electron experiences 1.2 x 10^-3 force when it enters the external magnetic field, B with a velocity v. What is the force experienced by the electron if the magnetic field is increased two times and the velocity is decreased to half? Any help would be

127. ## operating system

How would you write a formula to multiply the number in a cell z675 times the number in cell a 1

128. ## math math

Write 5.62*10^5 in standard form

129. ## chmisrty

when a solution of Iron (II)ammonium sulfate was mixed with K4FE(CN)6, the precipitate was initially white but turned blue upon exposure to air. what happen to the Iron(II)ionwhen the precipitate turned blue

130. ## Excel computers

How would you write a formula to multiply the number in cell k4 times the standard deviation of the number in cell z2 through z10

131. ## social studies

what are the constitutional requiremnets for the inauguration and memeorablr facts from past inauguration

132. ## Excel

How would you write a formula to divide the number in the cell v45 by the number in cell b78

133. ## Computers excel

How would you write a formula to divide the quantity of cell c1 plus c 8 by the number in a 98

134. ## Physical Sciences

How do I calculate the initial velocity of a ball if i've only given a maximum height of 12metres above its starting point?

135. ## Math

For a car travelling at a constant speed of 80km/h, the distance driven, d kilomtres, is represented by d(t)= 50t, where t is the time in hours. The cost of gasoline, in dollars, for the drive is represented by C(d)= 0.07d. a)Determine C(d(8)) numerically

136. ## Chemistry

What is the mole fraction of solute in a 3.26 m aqueous solution?

137. ## math

Describe the sequence and types of transformations required to transform the graph of y=x^3 into the graph of y=2f{-2(x-1)}+4. Give the equation of the new transformed function with detailed explanation.

138. ## Math - 8th Grade

I need help please. I answered (c)incorrectly. Chantal and Julia ride horses in the same race. Chantal's horse finishes in one minute and 59.53 seconds. If Julia's horse runs 2.25 percent slower than Chantal's, how long does it take Julia's horse to finish

139. ## Science

The density of the sun's core is about 160 g/cm. The density of the earth's core is about 13.0 g/cm. About how many times denser is the sun's core than Earth's?

There are two clouds of material: one with widely spaced objects with small masses and one with closely packed objects with larger masses. What is more likely to form a solar system, the first or second? Use gravity to explain your answer.

141. ## chem

how many moles of Na are there in 1.50 moles of NaCl ?

142. ## math

assume the substance has a half-life of 11 years and the initial amount is 126 grams.How long will it be until only 15 % remains?

143. ## Physics

A crate is initially at rest on a rough, horizontal floor. The crate moves in a straight line as it is pushed resulting in the crate speeding up at a constant rate of 3.89 m/s2. After a while, the crate is no longer being pushed and the crate slows down at

144. ## Math

Find the image of (-3,4) corresponding to y=f(x) if it undergoes the following transformations a)3f(x-2)+6 b)-f(-x+4)-2 c)f(3(x+2))

145. ## Science

What is the period of the sinusoid s(t)=Asin(2πf0t)

146. ## Calculus

what is the limit as x goes to infinity of (8x^3-10x^2-2x)/(3-10x-11x^3)? what is the limit as x goes to NEGATIVE infinity of (8x^3-10x^2-2x)/(3-10x-11x^3)?

147. ## Calculus

let f(x)=(x^2+2x-15)/(3x^2+12x-15) Find the horizontal and vertical asymptotes of f(x).

148. ## PHYSICS 2

Two wires have the same cross-sectional area and are joined end to end to form a single wire. The first wire has a temperature coefficient of resistivity of α1 =0.00603 (C°)-1 and a resistivity of 5.00 x 10-7Ω m. For the second, the temperature

need help please. I answered (c)incorrectly. Chantal and Julia ride horses in the same race. Chantal's horse finishes in one minute and 59.53 seconds. If Julia's horse runs 2.25 percent slower than Chantal's, how long does it take Julia's horse to finish

150. ## math

An innovative rural public health program is reducing infant mortality in a certain West African country. Pretend the program in Senegal has been reducing infant mortality at a rate 8.1 % per year. How long will it take for infant mortality to be reduced

151. ## Science

The rms(root-mean-square) value of a periodic signal s(t) is defined to be rms [s]=(1/T Ss^2t dt)^1/2 where T is defined to be the signal's period: the smallest positive number such that s(t)=s(t+T). What is the rms value of the sinusoid s(t)=Asin(2πf0t)?

152. ## social studies

events planned for the 2013 inauguration and how do events of 2013 reflect the style of barack obama

153. ## chemistry

a sample of compound C,H,N and O with a mass of 0.6216 was found to contain 0.1735g C,0.01455g H,0.2024g N.Its molecular mass 129.calculate its epirical and molecular formulas.

154. ## Calculus

What is the limit? 1. limit as x goes to POSITIVE infinity (10x+8)/(7x^2-3x+5) 2. as x goes to NEGATIVE infinity (10x+8)/(7x^2-3x+5)

155. ## English; Help..

Imagine that you are an agent who is interested in publishing new authors. Choose any book you like and present the book to a publisher in New York. You want to be the person responsible for putting the book on the shelf. You should convince the publisher

156. ## math

a) 1150 dollars invested at 9% annual interest rate (compounded yearly) or b) 1475 invested at 6% annual interest (compounded yearly) after When would the two investments have equal value?

I need help please. I answered (c)incorrectly. Chantal and Julia ride horses in the same race. Chantal's horse finishes in one minute and 59.53 seconds. If Julia's horse runs 2.25 percent slower than Chantal's, how long does it take Julia's horse to finish

158. ## Math

Square the expression. Write your answer in simplest form. (-8 – 9 11)2 How do you do this?

159. ## Science

The intensity of an earthquake wave passing through the Earth is measured to be 1.5×10^6 J/m^2*s at a distance of 58km from the source. What was its intensity when it passed a point only 2.0 km from the source? At what rate did energy pass through an area

160. ## English ( Another evening at the club)

1. Why is there no charity in Mithila? A.) No one in the country is need of it. B.) The poor can collect the cast-off C.) jewelry for money. D.)The wealthy are greedy and do not give to the poor. No one is wealthy enough to give to others. 2. Why does Sita

161. ## chemistry

Calcium reacts with water to yield calcium hydroxide and water according to the following equation: Ca + 2H2O ==> Ca(OH)2 + H2 . How many moles of hydrogen will be produced if 3115.8 grams of calcium hydroxide is produced?

162. ## social studies

describe two ways the federal bureaucracy helps to shape laws by congress

Use digits to write eighty five hundred thousandths

164. ## calculus

In a case study where the maximal rates of oxygen consumption (in ml/s) for nine species of wild African mammals were plotted against body mass (in kg) in a log-log plot, it was found that the data points fell on a straight line with the slope

165. ## math

n the parallelogram above, if the measure of Y is 32°, what is the measure of W?

166. ## math help!

Fifty four million, seven hundred is how much greater than five million, eighty nine thousand ? Write The answer in words

Write 5.62*10^5 in standard form

168. ## Language Art

I'm currently doing a project and need a physical object to represent "racism". Anyone have a suggestion of such item? Thanks

Write 1/25 as a percent

170. ## physics

what is thermal resistance?

171. ## math help

At 9:00 a.m. marsha found a parking meter that still had 5 minute until it expired. She quickly put a quarter, 1 dime, and a nickel into The meter and went to her meeting. If 5¢ buys 15 minute of parking time, at What time will The meter expire

172. ## LAC Help Question

1. Write a four paragraph literary essay in response to the following question. Be sure to include a thesis statement in your introduction, provide textual evidence in the body paragraphs, and end the essay with a strong conclusion. You may use your books

173. ## Math

Hobbies: A book club charges a membership fee of \$20 and then \$12 for each book purchased. a. Write and graph a function to represent the cost y of membership in the club based on the number of books purchased x. b. what if...? Write and graph a second

174. ## math help

What number is 3/5 of 6

175. ## math help

Solve : p-1/2=1/3

176. ## Chemistry 12

The [OH-] of a solution with a PH 5.75 is is it 5.6*10-9M?

177. ## math help

Solve : 0.01÷(0.01÷0.001)

178. ## chemistry

Write a balanced chemical equation for the reaction that occurs when barium carbonate decomposes into barium oxide and carbon dioxide gas when heated.

179. ## math help

Use digits to write eighty five hundred thousandths

180. ## chemistry quick help!

In the balanced double replacement reaction of calcium chloride CaCl2 and aluminum sulfate Al2(SO4)3, how many grams of calcium sulfate can be produced if you start the reaction with 4.19 grams of calcium chloride and the reaction goes to completion?

1. Why is there no charity in Mithila? A.) No one in the country is need of it. B.) The poor can collect the cast-off C.) jewelry for money. D.)The wealthy are greedy and do not give to the poor. No one is wealthy enough to give to others. 2. Why does Sita

182. ## math help

Write 5.62*10^5 in standard form

183. ## Chemistry 12

The value of Kb for HPO₄²- is? A. 2.2*10^-13 B. 6.2*10^-8 C. 1.6*10^-7 D. 4.5*10^-2 I don't get how to solve this.

184. ## Chemistry Dr.Bob222==> Take a Look

what is this compound, it has a mf of c6h12o i. imgur. com/gCgw0Hi. png What may be the structure from the IR and H NMR data? This question is bugging me.

185. ## math help

Six hundred ninety four thousandths is how much more than fifty seven thousndths? Write The answer in words

186. ## math chapter 10

A clock shows 5:00. What time is it after the minute hand rotates 90 degrees?

187. ## Physics

At a certain time a particle had a speed of 60 m/s in the positive x direction, and 1.7 s later its speed was 59 m/s in the opposite direction. What was the average acceleration of the particle during this 1.7 s interval

188. ## math

If a farm as 13 heads and 36 feet. How many chicken are there and how many rabbit are there?

189. ## Physics

At a certain time a particle had a speed of 60 m/s in the positive x direction, and 1.7 s later its speed was 59 m/s in the opposite direction. What was the average acceleration of the particle during this 1.7 s interval

190. ## Math

Kayla earns a weekly salary of \$290 plus a 5.5% commission on sales at a gift shop. How much would she make in a week if she sold \$5799 worth of merchandise. How do I set up this problem?

192. ## Geometry

If you go to Eden a math tuition you will have the diagram for this question but if you do not there will be ... LET ME JUST GET TO THE QUESTION Question: what is the measure of MQ in the diagram shown?

193. ## BIOCHEMISTRY

Mark each statment that is true or false and give reasons. you will get credit only if your reasoning is correct a) at a steady state of an enzyme catalyzed reaction, there is not net change in [S] or [P] b) the linear anomer of beta-glucose is the more

194. ## Chemistry 12

name a compound that acts as a weak base? methanol? define the term weak bronsted-lowry base im not sure how to put this in words, but a weak base is found when you got a strong acid, when your ka is high, kb will be low.

195. ## chemchemchem

Using the equation 2H2 + O2 ==> 2H2O, determine how many grams of water is produced when 13 moles of oxygen is consumed.

196. ## math help

Three sevenths of the possible outcomes were favorable,while the rest of the possible outcomes were unfavorable. (a) what fraction of The possible outcomes were unfavorable?(b) what is The ratio of favorable to unfavorable outcomes?

197. ## math help

Solve: 2 m-25 cm=

198. ## physics

Suppose a 28.5 kg object is moving at 38.4 m/s along the x-axis just before it strikes a stationary 13.0 kg object. After the collision, the 28.5 kg object is moving with a velocity of 20.0 m/s at an angle of 5.79 degrees relative to the x-axis. What is