# Questions Asked onNovember 20, 2016

1. ## chemistry

For the following reaction KClO2->KCl+O2 assign oxidation states to each element on each side of the equation. Reactants K=? Cl=? O=? Which element is reduced? I got K=5, Cl=-1, and O=-4 . The element that reduced is K, but its says its wrong. Help,

2. ## calculus

For which of the following mixtures will Ag2SO4(s) precipitate? 150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.20 M AgNO3(aq) 150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.30 M AgNO3(aq) 150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.40 M AgNO3(aq) 150.0 mL

3. ## Chemistry

Write a balanced overall reaction from these unbalanced half-reactions. Sn->Sn2+ Ag+->Ag Balanced overall equation I got Sn+2Ag+->Sn+2Ag, but its wrong.

4. ## Physics

Three boxes are lined up so that they are touching each other as shown in the figure below. Box A has a mass of 30.0 kg, box B has a mass of 45.0 kg, and box C has a mass of 75.0 kg. An external force (F) pushes on box A toward the right, and the force

5. ## Math

Rs.200 is invested at the end of each month in an account paying interest 6% compounded monthly. What is future value of annuity after 10th payment

Below are a few questions I had difficulty with so please check my answers and correct me if I am wrong, thanks :) 1. Kim, a public relations manager, has just completed the process of checking the references of several job candidates. What should she do

7. ## Maths

Prove that:(cos40-sin30)/sin60-cos50=tan50

8. ## Chemistry 20

A student was experimentally checking the stoichiometry of a reaction. The student correctly predicted that the reaction should produce 1.82 g of al2(so4)3(s). When the student dried and weighed the al2(so4)3(s) produced, its mass was 1.94 g. The percent

9. ## Maths

Adrienne, Betty and Cathy were the only three competitors participating in a series of athletic events. In each event, the winner gets 3 points, second gets 2 points and third gets 1 point. After the events, Adrienne has 8 points, Betty has 11 points and

10. ## biology

Describe how the products of fat digestion enters a person blood?

11. ## science

if a tank has water to depth of 10m calculate the pressure exerted by it

12. ## Economics

Below are a few questions I had difficulty with so please check my answers and correct me if I am wrong, thanks :) 1. Kim, a public relations manager, has just completed the process of checking the references of several job candidates. What should she do

13. ## Math

The mean score of the students who took a mathematics test was 6. Exactly 60% of the students passed the test. The mean score of the students who passed the test was 8. What was the mean score of the students who failed the test?

14. ## material science

A uniform compressive stress σz is applied to the surface of the metal alloy, and it may be assumed that there is no friction between the alloy and the die. This aluminum alloy has Young’s modulus E=70GPa and a Poisson’s ratio ν=0.33. Determine the

15. ## Maths

On a clock face, a line is drawn between 9 and 3 and another between 12 and 8. What is the acute angle between these lines? A.45 B.60 C.50 D.30 E.22.5

16. ## Chemistry 20

If 4.56 mol of zinc react with excess copper (ii) sulphate, how many moles of precipitate will be formed?

A toy rocket is launched form a 3m platform, at 8.2m/s. The height of the rocket is modelled by the equation h=-4.0t^2+8.1t+3 where h is the height, in metres, above the ground and t is the time, in seconds. After how many seconds will the rocket rise to a

18. ## Physics

A nichrome wire of diameter 5mm and length 5m has resistivity of 10^-4 ohm meter. If wire is compressed to double it's diameter. Find the resistance in its new form. Also find the resistance of the wire originally ?

19. ## math

a boat travels 10 miles upstream in 4 hours. the boat travels the same distance downstream in 2 hours. Determine the rate of boat in still water and the rate of the current? Downstream speed = b(still water) + c(current) Upstream speed = b - c upstream

20. ## Math

1. What is 0.68 written as a simplified fraction?

21. ## Maths

Five people are sitting around a circle. Some always tell the truth, whilst others always lie. Each person claims to be sitting between two liars. How many of them are telling the truth? A 0 B 1 C 2 D 3 E 4

22. ## Chem

What are the major species in solution during the titration of citric acid with a strong base?

23. ## Statistics

The heights of women in a certain population have a Normal distribution with mean 64 inches and standard deviation 3.5 inches. We select three women at random from this population. Assume that their heights are independent. Find the probability that the

24. ## Trig

From a point A, 30 meters from the base of a building B, the angle of elevationto the top of the building C is 56 degrees. The angle of elevation to the top of flagpole D on top of the building is 60 degrees. Find the length of flagpole CD

25. ## Linear Programming - The Graphical Method

A farmer is going to divide her 60 acre farm between two crops. Seed for crop A costs \$20 per acre. Seed for crop B costs \$10 per acre. The farmer can spend at most \$700 on seed. If crop B brings in a profit of \$60 per acre, and crop A brings in a profit

26. ## Physics

A car is proceeding at a speed of 12.0 m/s when it collides with a stationary car in front. During the collision, the fist car moves a distance of 0.300 m as it comes to a stop. The driver is wearing her seat belt, so she remains in her seat during the

27. ## Physics

An electric heater supplied at 40 Volt's draws a current of 5 ampere. If it is now connected to a 120 Volt supply, find the value of current being drawn ?

28. ## material science

A uniform compressive stress σz is applied to the surface of the metal alloy, and it may be assumed that there is no friction between the alloy and the die. This aluminum alloy has Young’s modulus E=70GPa and a Poisson’s ratio ν=0.33. Determine the

29. ## Math

A pool has a uniform circular cross section of radius 5 metre and uniform Dept 1.4 metre it is filled by a pipe which delivers water @ 20 litre per second calculate in minutes the time taken to fill the pool. If the pool is emptied in 42 min by another

30. ## Maths

There are 3 blue pens, 4 red pens and 5 yellow pens in a box. Without looking, I take pens from the box one by one. How many pens do I need to take from the box to be certain that I have at least one pen of each colour? A 8 B 9 C 10 D 11 E 12

31. ## math

A researcher collated data on Americans’ leisure time activities. She found the mean number of hours spent watching television each weekday to be 2.7 hours with a standard deviation of 0.2 hours. Jonathan believes that his football team buddies watch

32. ## math

A girl swims across a river. When she swims in still water, she swims at 1.25 m/s, the river flows parallel to its banks at v m/s. The girl aims to swim upstream at angle θ degrees parallel to the river bank so that her resultant velocity of 1 m/s is

33. ## Chemistry

What are the major species in a solution during the titration of citric acid with a strong base such as NaOH?

34. ## math-8

suppose hector dilates the rectangle shown below with the center of dilation at 0,0 and a scale factor of 2 and then translates the figure 1 unit to the left. what will be the coordinates the vertices of the similar figure that results, One point on figure

35. ## algebra

The sum of three numbers is 82. One of the numbers is 9 more than one of the others. Represent the numbers in terms of one variable.

36. ## chemistry

Suggest a source of error (not already mentioned) that would result in a value of x that is a) higher than the actual value b) lower than the actual value

37. ## Chemistry

A 24 L welding tank contains of 285 bar of argon at 28 °C. Nitrogen is added to obtain an 80:20 argon:nitrogen mixture. a) What are the partial pressures of argon and nitrogen? b) What will be the total tank pressure?

38. ## Mobymax

Jan ran for 1 hour and 15 minutes. If Jan can run a mile in 7.5 minutes, how many miles did she run?

39. ## English

Poem Meaning "I had sat within that marble circle where the Oldest bard is as the young, And some orient dawn had found me kneeling On the threshold of the House of Fame" Flower of Love by Oscar Wilde

40. ## American Government

With the existing colonies or dependencies of any European power we have not interfered and shall not interfere....Our policy in regard to Europe...Remains the same, which is, not to interfere in the internal concern of any of its powers. 1. Which American

41. ## chemisty

if you react 1.20g of copper metal with excess silver nitrate, how many moles of silver metal are produced?

42. ## interior decoration

Which one of the following colors can you use to make a warm room seem cooler? A. Orange C. Yellow B. Red D. Blue

43. ## Calc III

Find the absolute maximum of the function f(x,y) = x^2 + 4y on the set of points (x,y) that satisfy x^2 + y^2 < or = to 25. I understand that you have to check the endpoints and find critical points, but I cannot solve this. Thank you.

44. ## Math

9/12 divided by 1/3 is 2 1/4. How is this shown on an array?

45. ## physics

When a 85.0 kg. person climbs into an 1800 kg. car, the car's springs compress vertically 1.8 cm. What will be the frequency of vibration when the car hits a bump? (Ignore damping.)

46. ## Math Quadratic Equations . URGENT!!!!

A toy rocket is launched form a 3m platform, at 8.2m/s. The height of the rocket is modelled by the equation h=-4.9t^2+8.1t+3 where h is the height, in metres, above the ground and t is the time, in seconds. After how many seconds will the rocket rise to a

47. ## math

3/5 times ? equal negative 1

48. ## Physics

A 35.1 g pinball starts at the top of a frictionless pinball table inclined at 46.0°. If the ball is released and the spring at the bottom is compressed 0.0600 m and has a spring constant of k = 27.7 N/m, how far back up the pinball table will the pinball

49. ## physics

A fisherman's scale stretches 2.3 cm. when a 2.1 kg. fish hangs from it. What will be the frequency of vibration if the fish is pulled down and released so that it vibrates up and down?

50. ## physics

A pendulum makes 27 vibrations in 36 s. What is its period in seconds?

51. ## Physics

A block that has a mass of 0.0190 kg and a block that has a mass of 2.00 kg are attached to the ends of a rope. A student holds the 2.00-kg block and lets the 0.0190-kg block hang below it; then he lets go. Air resistance can be neglected. 1)What is the

52. ## physics

What is the period (in seconds) of a simple pendulum 62.0 cm. long, on the earth?

53. ## Dynamics of Machinary

Write a matlab code for a !@#\$%^&kens linkage that will draw a 15 cm straight line. clear % clears all variables from the workspace clc % clears the command window and homes the cursor close all % closes all the open figure windows L0 = 7.5; L1 = 3.75; L2

54. ## college math

solve these proportions and show work: x/2 = 1/2 plus 1 Thanks

55. ## ctps

a company maintain its employee details like: name,number,year of join,age,type of job,monthly salary. -find the employee with highest and lowest salary. -find the employee with 2nd highest in the year of experience. -check weather any employee had joined

56. ## physics

A uniform rod of 1 meter is bent at its midpoint to make90.The distance from its centre of mass

57. ## Math

Solving inequalities |1-15x/5| < 3

58. ## physics

A skate boarder traveling at a constant speed of 22 m/s on a road comes to a straight incline with a constant slope (do not use g for incline). While going up the incline, the skater has constant deceleration. If she is 16m up the incline after 12.0 s A)

59. ## Math

The sum of two numbers is 63. One number is 7 more than the other. Find the numbers.

60. ## Financial Accounting

What are some examples of things that would give a company significant or controlling interest?

61. ## math

The side of a square is x+8 metre and other side of the square is 3x-18 find the value of x .

62. ## Math

Solving system of equations by substitution. 52. {5x-2/4+1/2=3y+2/2;7y+3/3=x/2+7/3

63. ## Math

Solving inequalities (x+3)/2 greater than equal to (2-x)/-2

64. ## Math

Find two numbers for which the sum is 51 and the difference is 13.

65. ## physics

A ball is projected with initial velocity 50m\s at an angle of elevation of 37°from the top of a cliff 55m high. calculate the total time the ball is in the air and the maximum horizontal distance covered...please I have solved this question but didn't

66. ## Mcro-Econ

. Determine whether each of the following situations (a, b and c) would cause a shift of the aggregate demand curve, a shift of the aggregate supply curve (Long run and Short run), neither, or both. • Which curve shifts, and in which direction? What

67. ## Maths trigonometry

If the angle of elevation of the sum at the given time is 30° then find the length of the shadow cast by the tower of 150 feet height at that time.

68. ## Math

1. Ms. Johnson’s class is having a pizza party. If there are 14 students and 7 pizzas cut into 8 slices, what answer choice represents the fraction of one pizza that each student receives? If someone can give me an equation to solve to get the answer for

69. ## f math

given that sin (90-5 t ta )=cos180 - t ta...find d value of t ta

70. ## English

1. Everywhere you go, you will find the same thing. 2. Wherever you go, you will find the same thing. 3. No matter where you go, you will find the same thing. -------------------- Are they all the same in meaning? Which one is popuplar?

71. ## math

Water is being pumped at a rate of 100L/H. How long will it take to pump 550L

72. ## Life Science Math

Cheetahs are the fastest land mammal. They can accelerate from 0 to 60 mph in 3 seconds. Assuming a cheetah’s acceleration is constant, how far has it run during that time interval?

73. ## management mathematics 1

The elasticity of demand with respect to price for a commodity is constant and is equal to 2. Find the total revenue function, given that when the price is 1,the denand is 4

74. ## English

1. control: to have the power / to make decisions / and decide what will happen to something 2. control: to have / the power to make decisions / and decide what will happen to something -------------------- Where should we put a pause?

75. ## management mathematics 1

For three consecutive months, a person deposited some amount of money on the first day of ech montg in a small saving fund. These three successive amounts in the deposiy, the total value of which is ksh. 65,form a GP if the 2 extreme amounts be multiplied

76. ## MATH

1. Serena has 7/8 yd of fabric. To complete her craft project, she needs 3 times that amount. How many yards of fabric does Serena need? A. 2 5/8 B. 2 7/8 C. 3 3/7 D. 3 7/8 2. A length of ribbon is 3 1/2 yd long. How many pieaces 1 5/9 yd long can Joy cut

77. ## physics

A solar collector is placed in direct sunlight where it absorbs energy at the rate of 780 J/s for each square meter of its surface. The emissivity of the solar collector is e = 0.76. What equilibrium temperature does the collector reach? Assume that the

78. ## Math

Ade is four times as old as his sister Sola.If the sum of their ages is 20.Find the difference of their ages.

79. ## math

Can you please help with finding rate of change in graphing? One question has times: 0 15 23 30 35 distance:30 70 0 45 60 Can you help me get started, I don't know what to do? Also, in another question for the slope I have to find which line has greatest

80. ## science

tom is marking the locations of active volcanoes on a world map. how the locations of the volcanoes are related to earths plats.

81. ## Physics

0 degree centigrade temperature cause 300m/s2 how many centigrade temperature cause 400 m/s2 velocity

82. ## Math

The sum of two numbers X and Y is 10 but the distance between them is 20. Find both numbers assuming X is less than Y.

83. ## Calculus

Given that x=cos^2t and y=ln(sint) find d^2y/dx^2 at the point t=π/4

84. ## english

9th grade english romeo and juliet compare and contrast the movie

85. ## Math

Ragili made 6 liters of lemonade by mixing 1.5 liters od lemon juice and rest water.how much lemon juice will be needed to make 16 liters of lemonade ?

86. ## calculus antiderivation

A car traveling 60 mi/h along a straight road decelerates at a constant rate of 11 ft/s2. (a) How long will it take until the speed is 45 mi/h? (b) How far will the car travel before coming to a stop?

87. ## MATH

These are my last few question that I need help with PLEASE STAY WITH ME MS. SUE 1. In 2012, the total population of Florida was 3,158,697 people. What was the population in scientific notation, approximately? A. 3.2 * 10^5 B. 3.2 * 10^6 C. 3.2 * 10^7 D.

88. ## physics

Two forces are exerted on a hockey puck which initially stopped on frictionless ice. Force 1 is exerted in the positive x direction with magnitude of 10 N and Force 2 is exerted in the positive Y direction with magnitude 4 N. The hockey puck has a mass of

89. ## Math

myriam compared the y-intercept of the graph of the function f (x) = 3x + 5 to the y-intercept of the graph of hte linear function that includes the points in the table below. What is the difference when the y-intercept of f (x) is subtracted from the

90. ## College Math

Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing three red marbles, four green ones, five white ones, and one purple one. She grabs seven of them. Find the probability of the following event, expressing it as a

1-2

92. ## Help!Microeconomics

Central Crude Oil is a crude oil monopoly in a market. The following table shows the liner demand schedule of this firm which cannot apply price discrimination. The firm's fixed cost is \$2000 per month and its marginal cost is a constant of \$20 per

93. ## algebra 1

-4x + 7y = -3 -4x – 3y = 7 solve using elimination

asked by math GENIUS needs help
94. ## Microeconomics

Macro Sound's is a monopolistic firm of producing headphones. Fixed daily cost of production is \$1800. The production of each extra headphone is a constant of \$28. From the experiences, it is known that if the price of its headphones is set at \$100,

95. ## maths

solve x2=20+8x

What is the solution to (4 x 10^3) x (3 x 10^4) written in scientific notation? a)) 12 x 10^8 b)) 1.2 x 10^7 c)) 1.2 x 10^8 d)) 12 x 10^7 **

97. ## Maths

A curve has equation y = 10 + 8x + x^2 - x^3. X >= 0 a)Find the coordinates of the turning point. and show whether it is maximum or minimum. b) Hence, Find the area of the region bounded by the curve, the line y = 11x and the y axis? I manage to complete

98. ## Mechanics 1

At time t = 0, a small boat is at a buoy travelling due east with speed 2 ms−1 . The boat experiences a constant acceleration of (– 0.4i + 0.1j) ms−2 . The unit vectors i and j are directed east and north respectively. (a) Write down the initial

99. ## matlab

Im trying to figure out how to write a program that finds prime factors of a number. I have the following but it only works for the number 12 for some reason. % this program will determine if an integer is prime and determine % its prime factors function

100. ## Math

I need help with proofs in geometry.

101. ## Physics

A wheel is rotating with angular velocity 14 rev/s. What angular acceleration would be needed to bring the wheel to rest in a single rotation?

102. ## English

1. What animals live a lot in Canada? - Many beavers live in Ottawa. (Is this question or answer correct?) 2. What kinds of stick food are there on Wangfujing Street? - There are meat, fruit, insect, and even starfish sticks. (Is this question or answer

103. ## math

if there are 22 species on endangered list and 16 are animals .what percent are animals

104. ## Math help fast

What number or numbers can subtract two times a number from half of its square and gives a result of 16

105. ## Chemistry 20

When 1.2 x 10^-3 mol of nitric acid react with excess sodium carbonate, how many moles of carbonic acid are produced?

106. ## education

Treena is a personable student in Mr. Jordan’s math class. Mr. Jordan can see that Treena is popular with her peers. He regularly sees her conversing animatedly with her friends in the cafeteria and before and after school. She does well in class also.

107. ## Math

Mariah builds a tablet using square tiles. there are 12 rows of tiles and 30 tiles in each row. how many tiles does Mariah use.

108. ## physics

A .524kg object is tied down to the bottom of a container which container an unknown fluid. the tension in the rope is 38.5N. the object displaces .00735m3 of unknown fluid. Find the density of the unknown fluid.

109. ## physics

Two moles of an ideal gas have a volume of 3.43X10-3m3. the initial temperature of the gas is 78.0C. If the pressure is held constant while it is heated to a final temetatue of 275C, what would be the final volume?

110. ## physics

A water is operated by solar power. If the solar collector has an area of 5.25m2, and the intensity delivered by sunlight is 475W/m2, how long does it take to increase the temperature of .600m3 of water from 20.C to 85.0C?

111. ## Math probability

The sorry state lottery requires he does like five different numbers from 0 to 67 you are a big winner is the five numbers you select agree with those in the drawing and you are a small fry wonder if four of your five numbers agree with those in the

112. ## Calculus

A factory is located on one bank of a straight river that is 2000 m wide. On the opposite bank but 4500 m downstream is a power station from which the factory draws its electricity. Assume that it costs \$3 per meter to lay an underwater cable and \$1 per

113. ## Finite Mathematics

You invested \$25,000 into two accounts: one that has simple 3% interest, the other with 2% interest. If your total interest payment after one year was \$600, how much was in each account after the year passed?

114. ## Calculus

A small island is 2 km off shore in a large lake. A woman on the island can row her boat 10 km/h and can run at a speed of 20 km/h. If she rows to the closest point of the straight shore, she will land 6 km from a village on the shore. How far from the

115. ## math

A punch recipe calls for cups of 1 2/3 orange juice, cup of 3/4 pineapple juice, and cups of 1 1/2 mango juice. How many total cups of fruit juice does the recipe make?

116. ## Statistics

What is the average miles per gallon (mpg) for all new cars? Using Consumer Reports, a random sample of 35 new cars gave an average of 21.1 mpg. (a) Identify the variable. new cars total miles all cars miles per gallon (b) Is the variable quantitative or

117. ## Math

larry places \$ 520 in saving account that earns 3.2 simple interest. find the total amount in the a count after 2 years

118. ## Algebra

A water tank holds 500 gallons of water. The water is used at a rate of 12 gallons per hour. How much water is in the tank after 11 hours.

119. ## Chemistry

To increase the acidity of soil, you can add peat, which contains a complex acid mixture known as humic acid. The complexity of the humic acid makes it difficult to determine how acidic you are making the soil. You decide to use a titration to get a better

120. ## Math

A person deposited 100000 in a bank for three years. The Bank paid interest at 8% per annum compounded half yearly during the first year and at 12% per annum compounded quarterly during last 2 years.What is his balance after 3 years

121. ## ST

linear programming programming by graphing and then determining which vertex minimizes the objective function G=4x+3y . {5x+15y≥15 {5x+5y≥35 {x≥0 {y≥0 x = y = What is the minimum value? G=

122. ## anatomy

levels of potassium in the blood increase when aldosterone is made. A. true B. false

123. ## history

how were the south and the north the same?

124. ## anatomy

epinephrine is the major hormone involved in longterm stress true or false

125. ## anatomy

tachycardia is a common sign hypothyroidism true or false

126. ## anatomy

a person with a tumor of the anterior that oversecretes ACTH into the blood stream would be expected to show signs of cushings disease. is this true or false

127. ## MATLAB

trying to make this program work, but it only works for the number 12.. % this program will determine if an integer is prime and determine % its prime factors function MAIN clear; clc; % define number(s) to be checked, call function, and print output N =

128. ## History!!! help asap

5. How can you demonstrate the differences in the perspectives about Texas and its independence with historically accurate facts?

129. ## Math

In a math class 70 students received an A on the third test, which is 175% of the students who received an A on the second test. How many students received an A on the second test

130. ## Biochemistry

Because ethanol is a poor substrate for LDH, shouldn't it have a lower Km than lactate? (Because Km is binding affinity) Also, how do the structure of active sites (for example, in this case lactate and ethanol) influence Km? THANK YOU SO MUCH!

131. ## Physics

The block of mass 3.43553 kg has an acceleration of 2.1 m/s^2 as shown. / / F a _____________

132. ## Biochemistry

The kinetic parameters of the reaction of lactate to pyruvate can be measured by following the formation of NADH from NAD+. It can also be measured in the reverse direction, however, at high concentrations of NADH the reaction cannot be monitored at 340

133. ## History

How can you demonstrate the differences in the perspectives about Texas and its independence with historically accurate facts? How did the interaction between the settlers in Texas and the Mexican government develop and change over time?

134. ## math

What is the connection between the solutions of the equation ax^2 + bx + c = 0 and the x intercepts of the graph of f(x) = ax^2 + bx + c? The solution says: The solutions of the equation are the first coordinates of the x intercepts. I did the solutions to

135. ## f math

please what is the answer to this f math question......1-cos^2X=0 for 0°less dan equals X..then X less dan equals 270

136. ## Math

John wants to make brownies. To make brownies he needs 2/5 of a cup of flour per batch of brownies.if John has 2 cups of flour, then how many batches of brownies can John make?

137. ## math

three forth times negative three forth

138. ## english books

-In Fahrenheit 451 What is Motag's numbness when hes at the subway.

139. ## Physics

An angle of a circle with a 2 m radius is delta theta = 20 degree. What is the corresponding arc length delta s?

140. ## College Math

Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing three red marbles, three green ones, four white ones, and three purple ones. She grabs seven of them. Find the probability of the following event, expressing it as a

A toy rocket is launched form a 3m platform, at 8.2m/s. The height of the rocket is modelled by the equation h=-4.0t^2+8.1t+3 where h is the height, in metres, above the ground and t is the time, in seconds. After how many seconds will the rocket rise to a