# Questions Asked onOctober 28, 2014

1. ## 8th grade English/Language Arts

1.)Why does the author of “Always to Remember” discuss Maya Ying Lin’s background? a.)to show that she experienced hardships b.)to appeal to Chinese-American readers c.)to show its influence on her design d.)to show her disinterest in architecture

2. ## math

to graph C(3,2) on a coordinate plane Translate the point left 3 units and down 1 unit.Graph the image point C. A. x,2,y3=x,1,y,1 B. x,2,y2=x,1,y,1 C. x,2,y3=x,1,y,1 D. x,3,y2=x,1,y,1 Is the answer D? Thank you

3. ## Math HELP!

Use arrow notation to write a rule that describes the translation of a point from (5,6) to (6,11). A. (x,y) ----> (x+1,y+5) B. (x,y) ----> (x-1,y-5) C. (x,y) ----> (x-1,y+5) D. (x,y) ----> (x+1,y-5) Is the answer A? Thank you

4. ## math

An ostrich farmer wants to enclose a rectangular area and then divide it into 4 pens with fencing parallel to one side of the rectangle. There are 720 feet of fencing available to complete the job. What is the largest possible total area of the 4 pens?

5. ## Physics

The Speed of train is reduced from 60km/h at the same time as it travels a distance of 450 m, If the retardation is uniform , find how much further it will travel (approx) before coming to rest? Answer is 30m but how? See my solution , i solved it in two

6. ## Physics

A 3.0 kg brick rests on a perfectly smooth ramp inclined at 34 above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant

7. ## Biology

What is the advantage of highly folded membranes in a cell? Name an organelle that uses this strategy?

8. ## Algebra

The ratio of North American butterflies to South American butterflies is 5:3. The ratio to South American butterflies to European butterflies is 3:2. There are 30 North American butterflies at the butterfly park. Question A. How many South American

9. ## Geometry/Algebra

What is the slope-intercept form of the equation y – 7 = –5/2 (x + 4)? y – 2 = –5/2(x + 2) y + 7 = –x + 5/2 y = –4/7+ 2 y = –5/2x – 3 (I keep coming up with y=5/2(x+4)+7 2. Distribute 5/2 y=(5/2x) + 10 + 7 3. Simplify. y=(5/2)x + 17 and it

10. ## Algebra

Bob needs to mix 2 cups of orange juice concentrate with 3.5 cups of water to make orange juice. Bob has 6 cups of concentrate. How much orange juice can he make? Please help answer thx

11. ## chemistry

When a 3.10g sample of liquid octane (C8H18) is burned in a bomb calorimeter, the temperature of the calorimeter rises by 26.8∘C. The heat capacity of the calorimeter, measured in a separate experiment, is 6.30kJ/∘C . Determine ΔErxn for the

12. ## Calculus

The top and bottom margins of a poster are 2 cm and the side margins are each 8 cm. If the area of printed material on the poster is fixed at 380 square centimeters, find the dimensions of the poster with the smallest area. Width = Height =

13. ## Chemistry

Q1. A 0.5 g mixture of Cu2O and CuO contain 0.425 g Cu. What is the mass of CuO in the mixture? Q2. A chemist wants to prepare 0.5 M HCl. The label of a commercial hydrochloric acid shows that S.G. =1.18 and concentration of HCl was 37%. Calculate the

14. ## Physics

The four masses shown in the figure below are connected by massless, rigid rods. moi-cog-problem-fig (a) Find the coordinates of the center of gravity of this object if MA = 120 g and MB = MC = MD = 180 g x = ? m y = ? m (b) Find the moment of inertia

15. ## programming

create the logic for a program that calculates and displays the amount of money you would have if you invested \$5000 at 2 percent simple interest for one year. create a separate method to do the calculation and return the result to be displayed.

16. ## Algebra

A collector has 120 movie posters and 100 band posters. She wants to sell 24 movie posters but still have her poster collection maintain the same ratio of 120:100. If she sells 24 movie posters, how many band posters should she sell? Explain thx

17. ## History

4. South Carolina responded to the Intolerable Acts by __________. (1 point) holding small “tea parties” in Charles Town and Georgetown sending representatives to the First Continental Congress drafting a state constitution and setting up a new

18. ## Chemistry

The reaction of iron and water vapor results in an equilibrium reaction, 3 Fe(s) + 4 H2O(g) ¡ê Fe3O4(s) + 4 H2(g) and an equilibrium constant of 4.6 at 850¡ÆC. What is the concentration of Hydrogen present at equilibrium if the reaction is initiated

19. ## sci

Two nonmetals from Group 16 are likely to form a(n) • metallic bond. • double bond. • ionic bond. • covalent bond.

asked by somebody help i am new
20. ## Math help

Translate P(4,0) right 3 units and up 5 units. Give the coordinates of the image point. A. (-5,1) B. (1,-5) C. (5,7) D. (7,5) Is the answer D? Thank you

21. ## sci

atomic theory is. a. subject to change if new information is discovered. b.a solution the problem of differing isotopes. c. unchangeale.

asked by somebody help i am new
22. ## Health

The number of calories consumed must equal the number of calories________. a.)needed b.)burned c.)absorbed d.)wanted 2.)It is important to recognize which of the following when watching your weight so that you know what triggers your eating habits. a.)

24. ## physics

A child pulls a wagon by the handle along a flat sidewalk. She exerts a force of 80.0 N at an angle of 30.0 above the horizontal while she moves the wagon 12 m forward. The force of friction on the wagon is 34 N. Calculate the mechanical work done by the

25. ## Physics

The 22 cm diameter disk in the figure below can rotate on an axle through its center. At the end of this problem, you will calculate the magnitude and direction of the net torque about the axle when F = 22 N. The net torque is just the sum of the

26. ## Chemistry

What are the products for KMnO4 + FeSO4 + NaOH? What is the net ionic equation? I am pretty sure one of the products in MnO2, because I got a muddy brown parcipitate, but I've been getting a variety of answers.

27. ## language arts

What does the phrase as friendly as a nest of yellow jackets mean in paragraph 2?

28. ## Physics

When a moving coil galvanometer has a resistance of 20 ohms and gives full scale deflection of 1.5mA.calculate the potential difference across its terminals when the current is flowing

29. ## Physics

Calculate the pressure on the top lid of a chest buried under 4.30 meters of mud with density 1.75 103 kg/m3 at the bottom of a 12.5-m-deep lake

30. ## physics

A man holds a 185-N ball in his hand, with the forearm horizontal (see the figure). He can support the ball in this position because of the flexor muscle force , which is applied perpendicular to the forearm. The forearm weighs 24.3 N and has a center of

31. ## Math

The value of k that makes the expression x^2 + 72x +k a perfect square trinomial is ?

32. ## science

how did the discovery of the electron change the atomic model? A.it disproved the earlier idea of an indivisible atom. B. it confirmed that atoms are very tiny. C.it exposed fradulent experiments conducted by unqualified scientists. D. it proved that atoms

33. ## Math

Given the function q=D(x)=k/x^n where k is a positive constant and n is an integer greater than 0. (a) How would you find the elasticity of the demand function (b) Is the value of the elasticity dependent on the price per unit c.) Does the total revenue

34. ## math

Jill's fish weighs 8 times as much as her parakeet. Together, the pets weigh 63. How much does the fish weigh? This is 4th grade .

35. ## Physics

In a huge oil tanker, salt water has flooded an oil tank to a depth of h2 = 4.50 m. On top of the water is a layer of oil h1 = 7.55 m deep, as in the cross-sectional view of the tank as shown in the figure. The oil has a density of 0.700 g/cm3. Find the

36. ## English

What do you have to do afer school? 1. I have to go to my academy and study hard until 11 p.m.. 2. I have to go to an academy to study math, English and science. 3. I have to go to the academy to study 5 subjects. 4. I have to wash clothes in the washing

37. ## math just practice

Sr = SQUARE ROOT 1. What is the solution to -75 sr to the nearest integer? (1 point) 9 8 -8 -9 2. Shelly sews a blanket that has an area of 170 square feet. It has 30 square blocks, each the same size. What is the approximate length of each side of a

38. ## physics

a mass of 5 kg is whirled in a horizontal circle at one end of a string 50 cm long. the other end being fixed. if the string when hanging vertically will just support a load of 200 kg mass without breaking , find the maximum whirling speed in m/s

39. ## Physics

You are driving down a highway at a speed of 20.0m/s when you spot a deer. You quickly slam on your brakes, trying to stop your car in front of the deer. Assume the braking force can be modeled as kinetic friction with a friction coefficient of 0.80. If

40. ## Social Studies

What challenges must Cyprus overcome to reunify? Explain your ideas about this topic and suggest ways that Cyprus could work to solve its challenges of diversity.

To determine the atomic mass of an element, you would take a _________ average of the isotopes that make up that element

42. ## math

A rectangle has one side on the x-axis and two vertices on the curve y=6/{1+x^2}. Find the vertices of the rectangle with maximum area. Vertices =

43. ## physics help!

Two springs P and Q both obey Hooke’s law. They have spring constants 2k and k respectively.The springs are stretched, separately, by a force that is gradually increased from zero up to a certain maximum value, the same for each spring. The work done in

44. ## AP Physics C

A 4.10 kg block is pushed along a floor by a constant applied force that is horizontal and has a magnitude of 39.0 N. Figure 6-26 gives the block's speed v versus time t as the block moves along an x axis on the floor. What is the coefficient of kinetic

45. ## Calculus

A ball is thrown up on the surface of a moon. Its height above the lunar surface (in feet) after t seconds is given by the formula h=308t−(14/6t^2) Find the time that the ball reaches its maximum height. Answer = Find the maximal height attained by the

46. ## Physics

Find the x- and y-coordinates of the center of gravity of a 4.00 ft by 8.00 ft uniform sheet of plywood with the upper right quadrant removed as shown in the figure below. The dimensions of the cutout are a = 4.50 ft and b = 1.70 ft. HINTS: Think of the

47. ## Math

Is the following statement always, sometimes, or never true for numbers greater than zero: "In equivalent ratios, if the numerator of the first ratio is greater than the denominator of the first ratio, then the numerator of the second ratio is greater than

48. ## Math Demand Functions

Given the function q=D(x)=k/x^n where k is a positive constant and n is an integer greater than 0. How would you find the elasticity of the demand function After you find the der. what do you do?

49. ## AP Chem

(NH4)2CO3 2NH3 + CO2 + H2O solid (NH4)2CO3 is placed in an evacuated container at 115C. When equilibrium is reached Kp = 1.93x10^-3. Extra NH3 gas is added, when equilibrium is reestablished, the partial pressure of NH3 is four times the partial pressure

50. ## Physics

A 3.0 kg brick rests on a perfectly smooth ramp inclined at 34 above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant

51. ## math

A teacher is making multiple copies of a 1-page homework assignment. The time it takes her in seconds is 2 times the number of copies she makes plus 3

52. ## Calculus

A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman window with a perimeter of 49 feet?

53. ## Physics Light Diffraction

A single monochromatic indigo light source is shined through an etched, flat prism with a slit separation of .0250mm. the resulting interference pattern is viewed on a screen 1.25 m away. the third Maximum is found to be 6.6 cm from the central maximum.

54. ## physics

Find the x- and y-coordinates of the center of gravity of a 4.00 ft by 8.00 ft uniform sheet of plywood with the upper right quadrant removed as shown in the figure below. The dimensions of the cutout are a = 4.50 ft and b = 1.70 ft. HINTS: Think of the

How do values and belief shape who characters are as individuals and influence their behavior? Our values and belief are strongly related and influence our behavior. It can bring to mind by certain communications or experiences. Our values therefore not

56. ## Science

According to the continental drift theory, which of the following land regions should show the greatest similarities in fossil types? (1 point) A) east coast of South America and west coast of Africa B) east coast of South and west coast of South America

57. ## Chemistry

The density of ethanol is 0.789g/cm3 at 20 degreesC. What volume of ethanol has a mass of 15.5 grams?

58. ## English

How is the word brusque used in a complex sentence? please give examples.

59. ## Physics

A railroad car with a mass of 1.93 ✕ 104 kg moving at 3.12 m/s joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.04 m/s. What is the decrease in kinetic energy

60. ## Statistics

A simple random sample of 60 items resulted in a sample mean of 64. The population standard deviation is 16. a. Compute the 95% confidence interval for the population mean (to 1 decimal).

61. ## trigonometry

A motor boat moves in the direction N32degreeW for 3hrs. at 18miles per hour. How far north and how far west does it travel?

62. ## physics

Find the x- and y-coordinates of the center of gravity of a 4.00 ft by 8.00 ft uniform sheet of plywood with the upper right quadrant removed as shown in the figure below. The dimensions of the cutout are a = 4.50 ft and b = 1.70 ft. HINTS: Think of the

63. ## Colle physics

For an object in uniform circular motion, on what parameters does the experimental determination of the centripetal force depend when using F = ma

64. ## math

A sticker is 1.2 cm wide how many stickers will fit edge to edge on a strip of paper that is 108 Centimeters long

65. ## Math

If an object is propelled upward from ground level with initial velocity of 55 feet per second, it's height h in feet t seconds later is given by the equation H=-16t^2+55t. after how many seconds does the object hit ground?

66. ## Chemistry

How many atoms of aluminum [Al] are present in a sample of aluminum carbonate [AlCar] weighing 3.45E6 amu?

67. ## Physics

Two thin slits with separation of .0250mm are placed over monochromatic orange laser light at 610.nm. What is the small angle measurement from the central maximum (zero degrees, inline with the source) to the first maximum? I thought in order to solve this

68. ## physics

Find the x- and y-coordinates of the center of gravity of a 4.00 ft by 8.00 ft uniform sheet of plywood with the upper right quadrant removed as shown in the figure below. The dimensions of the cutout are a = 4.50 ft and b = 1.70 ft. HINTS: Think of the

69. ## Physics

A 3.0 kg brick rests on a perfectly smooth ramp inclined at 34 above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring constant

70. ## Algebra

In each bouquet of flowers, there are 4 roses and 6 white carnations. Complete the table to find how many roses and carnations there are in 4 bouquets of flowers? Please help answer thx

71. ## chemistry

Calculate the volume of concentrated NaOH solution (which contains 500.00g of NaOH per liter of solution) that you will need to make 1.00L of a 0.100M NaOH solution

72. ## Math

Holly earned \$800 more than she did last year. Write the integer that is represented in this situation. Then, interpret what the zero means in this situation.

73. ## Modern law

how is modern law and government have been influenced by classical Greece and Rome

74. ## chemistry

A ballon is filled with 54.8 g of CO2. The gas is at STP. Calculate the volume of the CO2 gas in liters?

75. ## Chemistry

If you used 2.0mL of 1.0M H2SO4 and 3.0g of NaHCO3 how many moles of CO2 would be produced?

76. ## Fluid Mechanics

Find the water pressure at ground level to supply water to the third floor of a building 8.00 m high with a pressure of 325 kPa at the third level So the given is h=8.00 Ptop=325kPa Density water = 1000 Would I need to set it up like 325+1000*9.81*8.00

77. ## Teacher Aide

If you're preparing a bulletin board,how many ideas should you try to get across at one time?

78. ## Chemistry

Silver carbonate [AgCar] has a density of 6.077 g/cm3. Calculate the mass (in fg) of carbon atoms [C] present in a AgCar crystal that has a volume of 457.6 Å3.

79. ## physics

A uniform rod is set up so that it can rotate about a perpendicular axis at one of its ends. The length and mass of the rod are 0.849 m and 1.17 kg. What constant-magnitude force acting at the other end of the rod perpendicularly both to the rod and to the

80. ## social studies

why did a land bridge emerge between asia and north america

81. ## chemistry

1. A gas cylinder contains 0.722 mL of hydrogen gas at a pressure of 10.6 atm. If the gas is used to fill a balloon at a pressure of 0.960 atm, what is the volume of the filled balloon?

82. ## math

Jenny is remodeling her bathroom floor. She is going to use tile that is 3/4 foot long. If her bathroom is 7 1/3 feet long, how many tiles will she need to first cover the length of the bathroom?

83. ## Math Physics

Find the water pressure at ground level to supply water to the third floor of a building 8.00 m high with a pressure of 325 kPa at the third level So the given is h=8.00 Ptop=325kPa Density water = 1000 Would I need to set it up like 325+1000*9.81*8.00

84. ## Math

344 miles in 11 hours 1. 344 miles/hours 2. 3784 miles/hours 3. 0.03miles/hours 4. 31.27 miles/hours** My answer is 4 can is that right?

85. ## English

Would Della from Gift of the Magi be a round and static character?

86. ## English

1. There is one more point that I want to talk about. 2. There is one more point we have to think of. ------------- Are the sentences grammatical? What is the meaning of 'point' here? 3. The farmere wanted to get rid of the hawks. So with the help of

88. ## Physics

A 3.0-kg brick rests on a perfectly smooth ramp inclined at 34° above the horizontal. The brick is kept from sliding down the plane by an ideal spring that is aligned with the surface and attached to a wall above the brick. The spring has a spring

89. ## Hon. Chemestry

The rock in a lead ore deposit contains 84% PbS by mass. How many kilograms of the rock must be processed to obtain 1.0 kg of Pb? I have no idea how to start or how I'm converting. Please help...

90. ## Calculus

Consider the function f(x)=(x^2)e^(14x) f(x) has two inflection values at x = C and x = D with C≤D where C is and D is Finally for each of the following intervals, tell whether f(x) is concave up or concave down. (−∞,C]: [C,D]: [D,∞)

91. ## Calculus

Find the point(s) (if any) of horizontal tangent lines: x^2+xy+y^2=6

92. ## Algebra

Which 3 ratios are equivalent to the ratio of cups of water to cups of milk in a recipe 1 to 3? Also, the ratio of boys to girls on the bus is 20/15? What are 3 equivalent ratios of 20/15. Please help answer both ? Thx

93. ## Algebra

Ed is using the recipe shown to make fruit salad. He wants to use 30 diced strawberries in his fruit salad. How many bananas, apples, and pears should Ed use in his fruit salad? The chart lists 4 bananas diced, 3 apples diced, 6 pears diced, 10

94. ## Physic

6. A car is moving along a straight road at 60 mph [26.7 meter/sec ]. The driver makes slams on his breaks locking them so that the car skid s to a stop. Assume a constant braking force due to friction , and a kinetic friction coefficient of 0.70 between

95. ## Pre - Algebra

The houses on your street are numbered with odd numbers starting with 1 and ending with 201. How many house numbers contain at least one 7? a.)30 numbers b.)28 numbers c.)24 numbers d.)20 numbers 2.)A school band has a brass section of trumpet, trombone,

96. ## Chemistry

If a sample of ammonium sulfate contains 1.75 grams of nitrogen [N] atoms, calculate the mass (in grams) it contains of sulfur atoms [S].

97. ## AP Chem

solid (NH4)2CO3 is placed in an evacuated container at 115C. When equilibrium is reached the total pressure inside the vessel is 0.473 atm. Some solid remain in the vessel at equilibrium. Calculate Kp.

98. ## Math

Find x-value of all points where function has relative extrema and find the Values of these extrema. f(x)= (x^2)/(ln(x))

99. ## physics

What is the angular momentum of a 2.43 kg uniform cylindrical grinding wheel of radius 12.5 cm when rotating at 1600 rpm? (b) How much torque is required to stop it in 8.00 s?

100. ## Physics

Your electric drill rotates initially at 5.11 rad/s. You slide the speed control and cause the drill to undergo constant angular acceleration of 0.363 rad/s^2 for 4.13 s. What is the drill's angular displacement during that time interval? ______ rad

101. ## English

1. As he didn't know what to say, he remained silent. 2. Not knowing what to say, he remained silent. (Are both the same?) 3. As he was not happy, he kept quiet. 4. Being not happy, he kept quiet. 5. Not being happy, he kept quiet. (What about these

102. ## algebra

a stick 36 cm long is cut into two pieces in the ratio 1:2 how is each piece show the answer

103. ## Calculus

A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y=4−x^2. What are the dimensions of such a rectangle with the greatest possible area? Width = Height =

104. ## Physics

Find the jet fuel mileage (mpg) of a Boeing 787 Dreamliner if: C=0.024, v=900 km/h, 1 gallon=3.8 liters, 1 mile= 1.6 km, energy conversion efficiency=30%, A=2060 ft^2, 1 ft^2=0.093 m^2, drag force = 1/2(CApv^2), p=0.41 kg/m^3 at 10,000 m, jet fuel energy

105. ## HELP! - Physics

I need help with this. A frustrated farmer is trying to move a large rock from his land. The stone has a mass of 1275 kg. By using a piece of board as a lever and a fulcrum the farmer will have a better chance of moving the rock. The farmer places the

106. ## Chemistry

When you have 50ml of a 0.25M solution of KI in water. What should the final volume be is you want to reduce the concentration to .10M

107. ## Math 130

Which has the greater effect on the surface area of a right circular cylinder - doubling the radius or doubling the height? How would I explain this

108. ## math

the drama club held a car wash on saturday and sunday. they washed a totl of 60 cars if they waShed 40% of the cars on sunday how many cars did they wash on sunday? PLEASE HELP DON'T UNDERSTAND

109. ## Math

When a satellite is h kilometres above Earth,the time,t,in minutes,to complete one orbit is given by the formula t=Root of (6370+h)^3/6024 a) A telecommunications satellite is placed 30 km above Earth. How long does it take the satellite to make one orbit?

110. ## Physics

A billiard ball of mass m = 0.250 kg hits the cushion of a billiard table at an angle of θ1 = 56.2° and a speed of v1 = 24.8 m/s. It bounces off at an angle of θ2 = 71.0° and a speed of v2 = 10.0 m/s. (a) What is the magnitude of the change in momentum

111. ## Chemistry

The combustion of octane produces carbon dioxide and water. If you start with 10.0 mol of octane, what mass of water (in grams) would you expect to produce?

112. ## English 10

Which type of faulty logic does this sentence contain? Although the cheeseburger is the most sought-after item on our menu, it is really difficult to manage the crowd in the drive-up lane because of the high demand; so, the cheeseburger should be taken off

113. ## Math

Write a word phrase for this algebraic expression. 6.5-h

114. ## Physics

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 200 N applied to its edge causes the wheel to have an angular acceleration of 1.048 rad/s2. (a)

115. ## physics

2. A spring of spring constant 220 N/m is sitting on a table. You pick it up and stretch it so that it is 8.0 cm longer than it was on the table top. How much work did it take you to stretch the spring? (Hint: This work is just negative the work done by

116. ## Math

14 boys play basketball, 12 boys play soccer, 16 boys play baseball. How many boys play basketball, soccer, or baseball?

117. ## Cal.

A bright light on the ground illuminates a wall 12 meters away. A man walks from the light straight toward the building at a speed of 2.2 m/s. The man is 2 meters tall. When the man is 4 meters from the building, how fast is the length of his shadow on the

asked by Hep with this question
118. ## Math: Statistics

1. A regression analysis includes the effect of Age, which is categorised into five levels. How many dummy variables should be defined for including it in the analysis? 2. A regression analysis includes Sex as an explanatory variable. How many dummy

119. ## physics

Consider two masses m1 and m2, connected by a spring of spring constant k and an uncompressed length L. The masses are on a frictionless surface. Initially, m2 compresses the spring to L/2 length. At t=0 the system is released. Find the position of the

Write a personal narrative about something happened to you when you were young. I when I was young and didn't walk on my feet. I was in my bed , I stood up and I put my hand on the edge of the bed so that it doesn't fall,but dropped it,and my dad took me

121. ## Math

javia ran 8 laps around a track to run a total of 1 mile on monday. How many laps will she need to run on tuesday to run 3/8 of a mike?

122. ## math

0.205 or 0.21

123. ## Managerial Accounting

The overhead rate for materials handling is \$10 per part based on an estimated total cost of \$900. Products X & Y have 320 and 280 parts respectively. What is the overhead allocated to X & Y? A. Product X \$3,200, Product Y \$4,400 B. Product X \$4,800,

124. ## statistics

Suppose that the amount of time it takes the IRS to refund to taxpayers is normally distributed with a mean of 12 weeks and a variance of 9. a. What percent of taxpayers should get a refund within 5 weeks? b. What percent of taxpayers will get their refund

125. ## chemistry

A student adds 25.00mL of distilled water to a 10.00mL sample of HCl of an unknown molarity and titrates this against a 0.085M NaOH solution. Will the addition of the water interfere with the determination of the molarity of the HCl sample? Why or why not?

126. ## physics

Two people (from the 1950s!) sit on opposite sides of a uniform board of length L. One person, of mass m1 = 50.0 kg, sits at a point 1.90 m to the left of the fulcrum. The fulcrum is located at the center of the board. The other person, of mass 45.0 kg,

127. ## chemistry

Calculate the mass of KHP which will result in an endpoint of 20.00mL when titrated against 0.097M NaOH

128. ## math

the cost C varies directly as the number in of penals is written as?

129. ## Algebra

A woman invests \$15000 in 2 separate investment accounts. One account earns 5.1%, one earns 4.2% simple interest. If she earns \$21 in interest total, how much did she earn from each account. I keep getting x to be 67,666.67 by getting to this equation:

130. ## Proportionlites

To determine proportionality between two ratios or rates how do you do this Conclusion

131. ## Chemistry

Calculate the molarity of the HCl solution if 25.00ml of the acid are required to neutralize 1.00g of each of the following 1) KOH 2)Ca(OH)2 I calculated the molar mass of KOH which was 56.11 Then I took 1.00g/56.11 = 0.0178mol To find out the molarity I

132. ## physics

A rocket blasts off from rest and attains a speed of 58.9 m/s in 14.4 s. An astronaut has a mass of 57.5 kg. What is the astronaut's apparent weight during takeoff?

133. ## math

For every 5 highlighters that Agnes buys, she gets 1 free. if Agnes needs 80 highlighters, what is the least number of highlighters she has to buy?

134. ## physics

How do i find the length of a projection of a vecor A=3x+y+2z on the xy plane? and how do i find the unit vecotr in the xy plane that is perpendiculer to vector A?

135. ## Physics

Why does air pressure decrease with increasing altitude? a) The weight of the air above is smaller b) The weight of the air below is smaller c) Less air above pushes down d) There is more air below to push up more strongly e) Colder air is less dense f)Hot

136. ## Physics

A hiker hikes in a straight line and maintains a constant velocity of +0.5 m/s. At time t=0.0 s, the hiker is 30 m from point A. What is the displacement from point A at 120 s? a. 60 m c. 120 m b. 90 m d. 15 m

137. ## Math

A cylinder has a radius of 5 centimeters and a height of 12 centimeters. What would the height of a cone need to be if it is the same volume and radius?

138. ## S.S.

1. Which of the following is true of the Hay-Bunau-Varilla Treaty? A. It granted the United States a canal zone in the Isthmus of Panama. B. It laid out the terms for the purchase of Panama from Colombia. C. It was intended to restore friendly relations

139. ## igliterature

My dreams are of a field afar And blood and smoke and shot. There in their graves my comrades are, In my grave I am not. I too was taught the trade of man And spelt the lesson plain; But they, when I forgot and ran, Remembered and remain. what does it mean

140. ## Writing

I need help with writing an essay about simple questions, complicated questions, and complex questions. I need to make a topic, write 3-5 paragraphs, describe and explain, write it as an expository essay, and write one paragraph about how it helps us in

141. ## AP Chem

NO2 + H2 NO + H2O [H2] = .30 mol/L [NO2] = .20 mol/L [NO] = [H20] = .70 mol/L @ 1000K A. What is the mole fraction of NO in the equilibrium mixture? B. Calculate Kc C. Determine Kp in terms of Kc D. If system is cooled to a lower temperature, 35% of NO is

142. ## physics

What is the velocity of a baseball thrown 40m from third base to first base in 1.9s? Show your work, and simplify please.

143. ## Science

How might genetically engineered crops help people in hash climates?

144. ## Writing

Ms.sue look at Noo ( writing grade 4)

145. ## Algebra 2 & trig

joanna invested \$7500, part at a 5.5% and the remainder at a 6% annual rate of interest. if she collected a total of 435 in interest at the end of one year, how much money was invested at each rate?

146. ## English

Write a paragraph in which you compare and contrast the motivations of Brutus and Cassius, and determine whether the ends justify the means. ("The ends justify the means" is simply saying that the good results, or "ends," make it acceptable, or

147. ## Physics

There is a block resting on a table attached to a hanging mass around a pulley. Assume a value of g = 10 m/s2. If there is no friction, and the mass on the table has a value of 5.0 kg and the hanging mass has a value of 1.0 kg, what is the value of the

148. ## The practice of working with school age children

A good alternative to introducing hammers, crosscut saws, and nails when introducing young children to woodworking is to use A. staples. B. glue. C. screws. D. water. B.

149. ## The practice of working with school age children

Which of these situations reinforces undesirable behavior? A. Promising a whining five-year-old a treat if he will stop whining and come alongb B. Holding a competition to see who has the most organized cubby C. Saving up stars to trade in for stuffed

150. ## math

the perimeter of a basketball court is 102 meters and the length is 6 meters longer than twice the width. What are the length and width?

151. ## Physics Help

A circular pond of radius 12 m has a layer of ice 0.25 m thick. On a spring day, the temperature of the water below the ice is 4.0°C and the temperature of the air above is 11°C. What is the rate of heat transfer through the ice, in kW?

152. ## Math

Please help..not wanting answer just where to start... A cylinder has a radius of 5 centimeters and a height of 12 centimeters. What would the height of a cone need to be if it is the same volume and radius?

153. ## Calculus 1

The mass, M, of a child can be approximated based on the height, H, of the child. The height of the child can be projected based on the child's age, A. a) State the chain rule for the derivative of the mass with respect to age (ie. find dM/dA) b) Suppose

154. ## social studies

what challenges face people who live as nomads. tell about 2 challenges.

155. ## The practice of working with school age children

Which of the following are the major determinants of physical growth and development? A. Food, TV, and technology B. Heredity, parents, and school C. Intelligence, cleanliness, and aggression D. Nutrition, emotional well-being, and culture D.

156. ## The practice of working with school age children

A common misperception among managers is that _______ play is more important, but it's actually more important for children to have _______ play. A. structured, unstructured B. limited, unlimited C. unstructured, structured D. unlimited, limited C.

157. ## Math

What is the quotien of 148 ➗32 ? Help I need it now

158. ## Calculus

A human cannonball is shot from a cannon at a speed of 21 meters per second at an angle of 20 degrees; how long before his height is 0? How far did he travel in that time?

Two carts with masses of 4.20 kg and 2.44 kg move toward each other on a frictionless track with speeds of 4.92 m/s and 3.87 m/s respectively. The carts stick together after colliding head-on. Find the final speed.

160. ## Chemistry

the solubility of aluminum sulfate in water at 20 degrees celcius is 26.7 g/100mL Calculate the molarity?

161. ## Maths

Show that if the diagonals of a quadrilateral bisect each other at right angles, then it is a rhombus.

162. ## Chemistry

need the answers to the formulas for the Ionic Compound: DiAmmonium Chromate Also I need the name of the following formula Sr(MnO4)2

163. ## physica

Consider the rods plus disc system shown in the Figure. The rods are identical. They have a length L =0.50 m, and mass M = 0.250kg. The disc has a radius of R = 0.130m and mass m=0.750kg. Both rods are glued to the disk as shown with X = 0.25m. The system

164. ## computer science

I would like to create a class for finding the voltages of 1, 2 or even 4 batteries. The Class can be called BatteryVoltage with a default voltage value of 1.5 (AA Battery) Must allow the user to find the total voltage of batteries when installed as a

165. ## AP Chem

NH3 + CO2 + H2O are introduced into an empty 1.00L vessel at 115 degrees. The initial partial pressure of at .500 atm. Calculate the number of moles of of solid (NH4)2CO3 that is present when equilibrium is established?

166. ## research methods

The table labeled “Brooklyn Precinct Activity Measures” shows counts of different indicators from the June 1999 Compstat report. All data are totals for the period January 1, 1999, through June 20, 1999. Notice, in the key to this table, that some

167. ## Chemistry

Hello. On the homework for my middle school chemistry class, one of the questions asks me to identify "the four classifications of substances". I am having difficulties with this problem.

168. ## Biology

What is the advantage of highly folded membranes in a cell? Name an organelle that uses this strategy.

169. ## Math

Sarah is 3 years older than 1/3 Darcy's age. Translate this phase to an algebraic expression.

170. ## chemistry

A titration of 15.75mL HCL of an unknown molarity requires 20.35mL of 0.0903M NaOH solution. What is the molarity of the HCl solution?

171. ## algebra

Ms. Baldwin likes to eat cookies. She eats 3 cookies per day. After 5 days, there are 24 cookies left in the box. Write an equation represents the story in y=mx+b form

172. ## chemistry

Calculate the volume of 0.102M NaOH necessary to react with 22.00mL of 0.10M HCl.

173. ## algebra math

Which one of the following is a geometric sequence? A. 2, –3, 9⁄2, −18⁄4 B. 0,1,2,3,... C. 8,4,2,1,1⁄2,1⁄4,... D. –7,10,23,36,.. i think the answer is D Can please check it ?

174. ## English

Not many years ago, I worked outside of the UK. ---------------------- In this sentence, what other expressions can we use in place of 'not many years ago'? Is it 'a few days ago'?

175. ## English

bold 1. being not afraid of taking risks and making difficult decisions 2. not being afraid of taking risks and making difficult decisions ----------------- What is the right definition of 'bold'? What is the right position of 'not'?

176. ## Calculus 1

The resistance of blood flow, R, in a blood vessel is dependent on the length of the blood vessel, the radius of the blood vessel, and the viscosity of the blood. This relationship is given by R = 8Lη/πr^4 where r is the radius, L is the length, and the

177. ## Calculus

The mass, M, of a child can be approximated based on the height, H, of the child. The height of the child can be projected based on the child's age, A. a) State the chain rule for the derivative of the mass with respect to age (ie. find dM/dA) b) Suppose

178. ## The practice of working with school age children

According to the Harvard Research Project, the three primary and interrelated factors critical to achieving youth outcomes are A. beginning on time, daily interaction, and strict discipline. B. enjoyable transitions, friendly parent-teacher relations, and

179. ## Math

How did the Proclamation of 1763 attempt to protect the Native American rights and land?

180. ## Math HELP!

Point A(6,-2) is reflected over the x axis. Write the coordinates of A' A. (6,2) B. (6,-2) C. (-6,2) D. (-6,-2) Is the answer A? Thank you

181. ## Calculus

Find the work done by F(x,y,z)=(x^2y)i=(x-z)j+(xyz)k where c=(t)i+(t^2)j+(2)k, 0

182. ## math

Can you write3+5+6=14 as a multiplicacion sentence? Explain.

183. ## math

If two triangles are similar one is 16 by 6 the other 5 by?

184. ## calculus

3) f(x)=x^(2)/6x^(2)+4. List the x values of the inflection points of f.

185. ## Technology

On the ipad we're is the control button?

186. ## Math

Is the LCM of 6 and 8 =2

187. ## xhosa,english,maths literacy,life orantation,tourism,business study,geography.

i am doing does subject i want to know can i become a social worker?

188. ## English

He left home for Italy to study music. ------------------- What does 'home' refer to here? His homeland, hometown, or house?

189. ## chemistry

Why is it important to make sure that the volume of water and the starting temperature are the same in each trial ?

190. ## math

Identify the solution of the system of equations if any -2x-4y=1 , 12y=-6x-3 is this no solution or (o,-1) (-1,0) or infinitelt many solution

191. ## probability

WaterPlant is 121 miles from the store. Assuming an average speed of 65 miles per hour, how many hours will it take the truck to drive from the bottling plant to the store? Round to one decimal place. How long is that in minutes? Show all your

192. ## literature

what does My dreams are of a field afar what is the author trying to say?

193. ## research methods grant writing

The table labeled “Brooklyn Precinct Activity Measures” shows counts of different indicators from the June 1999 Compstat report. All data are totals for the period January 1, 1999, through June 20, 1999. Notice, in the key to this table, that some

194. ## Physics I

Using 6400 km as the radius on Earth, calculate how high above Earth's surface you would have to be in order to weigh 1/16th of your current weight. Show all work leading to your answer OR describe your solution using 3-4 complete sentences.

195. ## Vocabulary.

The (luster, loom) of her reputation as a friend of humanity has grown brighter with the years. Luster, Loom? Luster?

196. ## The practice of working with school age children

What of these is most likely to foster a nurturing environment? A. Caregiver-responsive B. Child-responsive C. Adult-responsive D. Parent-responsive B.

197. ## Math

A banner is 15 square feet. How many square inches are equivalent to 15 square feet?

198. ## AP Chemistry

if the energy to break bonds is greater than the energy to form the bonds, is it exothermic?

199. ## math

what is mantisa?

200. ## juvenile

•Explain how race, ethnicity, and community relate to juvenile delinquency.

201. ## Physics

spiderman is racing from the rooftop to catch the green goblin. he runs 125 m off a building 125 m tall to catch a robber coming out of the bank across thenstreet (30.0m away) if he is running at 10.0m/s will he hit the building, land the robber, or hit

202. ## Algebra

Would x + 3 be a factor of 3x^3+ 5x^2 2x - 12? Ans: No, because there is a remainder of -54.

203. ## AP Calculus

Are infinite discontinuities removable? Also, please help me with this question: f(x)=x^2+4x+3 / x^2-9 has one removable discontinuity and one vertical asymptote. Find and identify the x-value for each. I found the asymptote at x=3, but please help for the

205. ## Science

Where does a clone receive is DNA from? My guess is two parents

206. ## Math

If you had 4 cakes each cut in tents by noon 4\5 We're sold how many pieces were sold by noon

207. ## English

1. Annie is a popular female hocky player. 2. Annie is a popular woman hocky player. ------------- Are both OK? Which one is commonly used? ========================= 3. Sam is a popular male hocky player. 4. Sam is a popular man hocky player.

208. ## algebra

Ms. Baldwin likes to eat cookies. She eats 3 cookies per day. After 5 days, there are 24 cookies left in the box. Write an equation represents the story.

209. ## Calculus 1

The resistance of blood flow, R, in a blood vessel is dependent on the length of the blood vessel, the radius of the blood vessel, and the viscosity of the blood. This relationship is given by R = 8Lη/πr^4 where r is the radius, L is the length, and the

210. ## English ... thinking question!!

How does viewing human behavior as good or evil shape a(n) individual’s/ society’s view of the world? Can you give me some thoughts about this question ? I have no idea!!! please help! Thank you so much

211. ## statistics

Two different samples drawn independently from the two district yielded the following results: District X: 1 x = 648, 2 1 s = 120, and 1 n = 100 District Y: 2 x = 495, 2 2 s = 140, and 2 n = 90 Verify at 0.05 level of significance whether the sample

Need help on this problem please! Been stuck for half hour trying to figure it out but I can't get through a. A and B look to be similar but I don't know how to do them! Please help! ----------------------------------- The resistance of blood flow, R, in a

213. ## Gramma

How can I use the word fallacious in a complex sentence?

214. ## Algebra

Temperature AF 40 1000 60 1840 70 2260 85 2890 Find a linear model for the number of acre-feet of water that evaporate as function of temperature. E(T)=

215. ## The practice of working with school age children

Traditionally, parent-teacher conferences took place between the teacher and the _______. However, this participation role is changing. A. employer B. father C. mother D. siblings A.

216. ## The practice of working with school age children

A _______ partnership can grow from the contractual relationship between a family and an out-of-school program. A. public-private B. household revolution C. committed D. community C.

217. ## research methods

Let's suppose that you are the chief researcher for this research project. You got the result just like Table 1 in the below. You want to put your finding in a report. Write a report with a minimum length of 250 words which is based on the Table 1. You

218. ## Grammar

Which sentence is correct? "However, Gene lies greatly, and often to himself." or... "However, Gene lies greatly and often to himself."

219. ## Math

How do I write 27% as a rate ratio?

220. ## Trig

I need to the steps to get (1-sinx)(1+sinx)=cos^2 x

221. ## English

The hawks began to kill their chickens, so the farmers began to kill the hawks with the help of the officials. ------------------- In this sentence, what does 'chickens' mean, baby chickens or grown-up chickens?

222. ## Java

I would like to create a class for finding the voltages of 1, 2 or even 4 batteries. The Class can be called BatteryVoltage with a default voltage value of 1.5 (AA Battery) Must allow the user to find the total voltage of batteries when installed as a

223. ## algebra 2

Show by counterexample that (x+y)^-2 and x^-2+y^-2 are not equivalent??

224. ## Algebra

K(x) = -3x^4 + 5x^3 - x + 7 for x = -2. K(-2) = -79

227. ## Algebra

(x^2 - 8x + 6)/(x + 2) = x - 10 + ((26)/(x + 2))

228. ## Algebra

(x^2 - 8x + 6)/(x + 2) = x - 10 + ((26)/(x + 2))