# Questions Asked onFebruary 16, 2014

1. ## chemistry

a metal object has a mass of 8.37g. when it was placed in a graduated cylinder containing 20.0ml of water, the water level rose to 23.1 ml. what is the density and identity of the metal?

2. ## Chemistry

Given the balanced equation representing a reaction : 2Fe+ 3Cu^2+ --> 2Fe^3+ +3Cu When the iron atoms lose six moles of electrons, how many moles of electrons are gained by the copper ions? (1) 12 moles (2) 2 moles (3) 3 moles (4) 6 moles how would i even

3. ## Math

Which equation is equivalent to 3 ln 2 – ln 4 + 5 ln x = ln 3 + 2 ln 5? ln 2x5 = ln 75 ln (5x + 2) = ln 75 ln 2x5 = ln 13 ln (5x + 4) = ln 96

4. ## Physics

An electron with speed 2.35×107m/s is traveling parallel to a uniform electric field of magnitude 1.16×104N/C . How far will the electron travel before it stops? A=0.135m How much time will elapse before it returns to its starting point? I solved for the

5. ## Math

The parents of twin boys started a college fund when the boys were 5 years old. They decided to invest \$6,000 into an account that compounds quarterly at a rate of 8.6% annually. If the parents do not invest any additional money into this fund, how much

6. ## math

the length of a rectangle is 8cm more than the width and its area is 172cm^2 .Find a) the width od the rectangle; b) the length of the diagonal of the rectangle, giving your answer correct to 2 decimal places

7. ## AP Chemistry

A solution is made by mixing exactly 500 mL of 0.167 M NaOH with exactly 500 mL of 0.100 M CH3COOH. Calculate the equilibrium concentrations of H+, CH3COOH, CH3COO-, OH-, and Na+.

8. ## Chemistry

Carbon monoxide and chlorine gas react to form phosgene: CO(g)+Cl2(g)⇌COCl2(g) Kp = 3.10 at 700 K If a reaction mixture initially contains 319torr of CO and 220torr of Cl2, what is the mole fraction of COCl2 when equilibrium is reached?

9. ## Math cca

1. Name a pair of vertical angles. angle sign2 and angle sign5 angle sign2 and angle sign6 angle sign3 and angle sign4 angle sign5 and angle sign6 2. If mangle sign1 = 43°, what is mangle sign4? 53° 43° 37° 27° 3. If mangle sign1 = 55°, what is

10. ## MATH

Misu Sheet, owner of the Bedspread Shop, knows his customers will pay no more than \$110 for a comforter. Misu Sheet wants to advertise the comforter as "percent markup on cost." a. What is the equivalent rate of percent markup on cost compared to the 30%

11. ## physics

A cart on a horizontal, linear track has a fan attached to it. The cart is positioned at one end of the track, and the fan is turned on. Starting from rest, the cart takes 4.22 s to travel a distance of 1.44 m. The mass of the cart plus fan is 350 g.

12. ## Math

3 similar shirts and 4 similar jackets cost \$360. 1 such shirt and 3 such jackets cost \$220. Find the cost of each shirt.

13. ## MATH

Hyabuza Japanese Restaurant received an invoice, dated February 20, 2011, for supplies they ordered that had a list price of \$2,700 from a supplier that offered a series discount of 15/8/4 and carried terms of 3/10, 1/15, N/30. How much should the

14. ## Chemistry

Fe2O3(s) + 2Al(s)-> 2Fe(l) + Al2O3(s) What is the theoretical yield of iron if we begin the reaction with 10.5 g of Al (assume an excess of Fe2O3)

15. ## Math

Mr.Fox's fourth grade class of 20 students had an average of 72% on their last test. However, Rose's mark of 76% had been incorrectly recorded as 56 %. What was the correct class average for the test? A) 82% B) 80% C)73% D) 62%

16. ## Physics

A physics book slides off a horizontal table top with a speed of 1.30 m/s . It strikes the floor after a time of 0.380s . Ignore air resistance. Find the height of the table top above the floor. Find the horizontal distance from the edge of the table to

17. ## SS-plz

Why did Jackson want to destroy the Bank of the United States? because he believed it gave too much power to wealthy easterners and little control to ordinary citizens. because he disliked the Bank's president, Nicholas Biddle. because he had been

18. ## Chemistry

At 25 °C, the density of a 40.0% (m/m) solution of sucrose, C12H22O11, in water is 1.18 g/mL. What is the molarity of this solution?

19. ## Math

From two tracking stations, A and B, 450km apart, a satellite is sighted at C directly above the line joining A to B. At the moment of sighting, angle A is 39 and angle B is 45. Find the height of the satellite. Please show all your steps clearly and asap,

20. ## Intermediate Algebra

Graph the following equation and if possible, determine the slope. y=-1 I know the slope is 0. I know that one of the plots for the graph is (0,-1), but I need to know the other plot.

21. ## Algebra 2

Why couldn't the chicken find her egg?

22. ## AP Chemistry

Approximately how much water should be added to 10.0 mL of 12.4 M HCl so that it has the same pH as 0.90 M acetic acid (Ka = 1.8 10-5)?

23. ## Math

Formula given: The decibel (dB) scale for measuring loudness, d, is given by the formula d = 10 log base ten(I X 12 to the power of 12) where I is the intensity of sound in watts per square metre. a) Find the number of decibels of sound produced by a jet

24. ## math

Bianca and yoko work together to mow the lawn. Suppose yoko mows 5/12 of the lawn and bianca mows 2/5 of the lawn. How much lawn still needs to be mowed?

25. ## physics

Two parallel plates separated by a distance of 2.0 x 10^-2 meter are charged to a potential difference of 1.0 x 10^2 volts. Points A, B, and C are located in the region between the plates. Calculate the magnitude of the electric field strength between the

26. ## Ap chem-Bases

Calculate the pH of a 0.2M solution of Triethylamine, (C2H5)3N, with a Kb of 4.0x10^-4

27. ## Physics

The work function of a material is 3.5 eV. If the material is the illuminated with monochromatic light (l = 300 nm), what are: a) the stopping potential b) the cutoff frequency

28. ## Physics

calculate the work required to launch a satellite from the surface of the earth (radius6380km) to orbit 6000 km above the surface

29. ## AP Chemistry

Iron pyrite (FeS2) is the form in which much of the sulfur exists in coal. In the combustion of coal, oxygen reacts with iron pyrite to produce iron(III) oxide and sulfur dioxide, which is a major source of air pollution and a substantial contributor to

30. ## Math

Each person in Sharae's family of 5 eats 3 bowls of cereal each week. Her mother is going grocery shopping and wants to know how many bowls of cereal they will eat over the next 4 weeks. Write and solve an equation to find how many bowls of cereal the

31. ## science

A ramp 20m long slopes down 1.2m to the edge of a lake. A force of 300N is needed to pull a boat on a trailer at constant speed up the ramp when they are clear of the water. If friction is negligible, what is the combined mass of the boat and trailer.

32. ## Geometry

How many distinct isosceles triangles exist with a perimeter of 99 inches and side lengths that are positive while numbers?

33. ## Math

Substitution X-6y=4 3x-18y=4

34. ## math

How many pounds of nails will be needed to fill 100 boxes with 8oz. of nails in each?

35. ## biology

what is the hypertonic hypotonic isotonic ,

36. ## chemistry

What is the density of a 19.74 g object if the dimensions of the block are: length = 12.6 mm height = 2.50 cm width = 0.0140 m

38. ## finance

3.The Lo Company earned \$2.60 per share and paid a dividend of \$1.30 per share in the year that just ended. Earning and dividend per share are expected to grow at a rate of 5% per year in the future. Determine the value of the stock:

39. ## Physics

An artillery shell is fired at an angle of 55.7◦ above the horizontal ground with an initial speed of 1690 m/s. The acceleration of gravity is 9.8 m/s^2. a.Find the total time of flight of the shell, neglecting air resistance. Answer in units of min.

40. ## General Chemisty

42.55mL of a standardized 1.005 M NaOH solution was necessary to exactly neutralize 30.0mL of an aqueous H2SO4 solution of unknown concentration. What is the molarity of the H2SO4 solution?

41. ## AP Chemistry

We drop 30 grams of magnesium into 770 mL of a 4 M HCl solution. What is the maximum volume of dry hydrogen that could be produced by this reaction at STP? Mg(s) + 2HCl(aq)→MgCl2(aq) + H2(g) Answer in units of liters

42. ## Foundations Math 12

Forty eight weeks ago, Gabriella invested money at 3.9% interest, compounded weekly. Today, her investment is worth \$225.50. How much interest has Gabriella's account earned in the past 48 weeks?

43. ## mueller

You know that a gas in a sealed container has a pressure of 111 kPa at 23 degrees Celsius. What will the pressure be if the temperature rises to 475 degrees Celsius?

44. ## Personal Dimensions of Education

Which is the correct form of the verb provided to correctly complete the sentence. A high percentage of student population in the College of Health and Behavioral Sciences _____ planning to obtain an internship in the hospital while completing their

45. ## physics

An automobile tire has a pressure of 325 kPa when the temperature is 10 degrees Celsius. If the temperature of the tire rises to 50 degrees Celsius and its volume is constant,what is the new pressure?

46. ## Science

HIV is a retrovirus. Which of the following processes does it use to synthesize a DNA strand using its own RNA genome as a template? *reverse translation *reverse transcription-------- *translation *transcription

47. ## maths

A plane has to crash on the field which is 2km by 1.5km . There is a lake in the corner whose dimensions are 900m by 300 m (i) what is the probability that the plane will crash in the lake (ii) what is the probability that will crash other than lake.

48. ## maths

Some cards are numbered from 1 to 30. They are reshuffled and arranged. Find the probability that it will be an odd number

49. ## math

If an apartment complex will need painting in 3 1 2 years and the job will cost \$25,000, what amount needs to be deposited into an account now in order to have the necessary funds? The account pays 12% interest compounded semiannually.

50. ## physical

for a gaussin surface through which the net flux is zero the following 4 statements could be true which of the statements must be true a)tere are no charges inside the surface b)the net charge inside the surface is 0 c)the electric field is 0 everywhere on

51. ## maths

3 and 5 of spade, king and queen of club , 7 and 9 of diamond and ace of heart are removed (i) find the probability its a red card (ii) find the probability its neither king nor queen (iii) find the probability its a face card (iv) That its a black

52. ## Math

If f(x) = 2/x+3 and g(x) = 1/x then (g ° f)(x) is equal to

53. ## pre-calculas

simplify the following complex fraction: x ____ -2 x-5 _____________________________________ x squared - 9x - 10 ____________________ x squared - 25

54. ## MORTGAGE

Find the monthly payment for the loan. (Round your answer to the nearest cent.) A \$128,000 home bought with a 20% down payment and the balance financed for 30 years at 8.5%

55. ## math check

Round 210,290,290,290.21029 to the nearest ten million 210,300,000,000

56. ## pre-calculas

find the LCD and solve: x+3 12x + 4 1 - 2x ____ + _________ = _______ 3-x x squared - 9 x + 3

57. ## Foundations Math 12

Jie is investing \$15000 and is choosing between two options. With Option A, the investment is compounded semi-annually and will grow to \$20000 in 5 years. With Option B, the investment is compounded monthly for 5 years. The annual rate of interest is the

58. ## chemistry

determine the solubility in g/100 g water of A. KNO3 at 90DEGREE CELCIUS B. KBr at 80 degrees celcius C. Kl at 0degree celcius D. KCl at 40 DEGREE CELCIUS

59. ## CHEMISTRY

Determine the followng solutes disolved in 100 g of water will form unsaturated or saturated solution a. 180g Kl at 60DGREE CELSIUS . 60g KBr at 30 DEGREE CELCIUS c170g KNO3 at 50 dgree celcius d. 20 g NaCl at 90Degree celcius

60. ## pre-calculas

Use "completing the square" to find the zeros of the polynomial. =2x squared + 6x + 5 = 0

61. ## English

Hello I need some ideas to elaborate on in an essay about the following question "1.According to Frankenstein what makes the Creature more “human,” his weaknesses or his strengths?Why?" Now I believe it is his weaknesses but i don't know what Victor

62. ## Maths

Solve and show workings 3√/9 *27√ It's supose to be the square root of 3 over 9 time the quare root of 27. i know the answer is 1 however i don't know how to get that answer. Any help would be appriciated. Thanks

63. ## calc

The slope of the tangent to the curve y=f(x) is given by (1/9)(x^2)(y^2). The curve passes through the point (3,1). Find the value of y when x=3*cubedroot(3).

65. ## Physical science

A box a weight of 100 N rests on a horizontal floor.The coefficient of static friction is 0,40 and the coefficient of kinetic friction is 0,30.DETERMISE THE FRICTIONAL FORCE ACTING ON THE BOX IF A HORIZONTAL FORCE IS APPLIED WITH A MAGNITUDE OF 0 N

66. ## Chemistry check and help

so for all the chemical formulas if there is no subscript (for the valency of the element) does it mean it is a one or do i have to find the valency on the periodic table of elements? ex. P02 the P for Phosphorus doesn't have a number does it mean it is a

67. ## Ficonacci puzzles

Take any Three consecutive fibonacci numbers: multiply the outer Two numbers, Squre the inner one. Do this At Least 6 times. What conjecture can you make?

68. ## Math

Can someone help me to solve this scientific notation equation. (5.7 x 10^3)^-^4

What are the price, fee, or leasing structure of your services? Please give a visual set-up and a website that shows the same for a cleaning company.

70. ## Chem

How do you determine the rate of reaction of a substance using stoichiometry and the average volume of the reaction on mixture?

In these sentences, note the use of interjections (underlineded). In a word or two, describe the feeling or emotion expressed by each. 1. "_No!No!_ No rugs!" A: Disapprovial and panic? (I am not entirely ccertain about this one.) 2. "Ah, Michener-sahib,

72. ## Quick English help

Can someone check my answers that I have for these analogies? Thank you! 1. Dark: light:: A. Dusk: night B. win : lose C. Sunrise: morning D. Shade: hue Is it d? 2. Engineer: locomotive:: A. Taxi: driver B. person: drive C. Captain : tugboat D. Teacher :

73. ## Editorial Evaluation (Writeacher)

What do you think now? I tried to follow your advice as well as the instructions in the website link you provided for me. Correction: "As a student, why have you enrolled in the University of Georgia? What do you wish or intend to gain? You might answer by

74. ## Math

Alex makes a 14 inch diameter pizza, which includes a 1 inch crust. Donald wants to make a 10 inch diameter pizza with the same percent of crust as Alex's pizza. To the nearest tenth of an inch, approximately how wide will the crust be on Donald's pizza?

75. ## Calculus

The figure at the right consists of a rectangle topped by an isosceles right triangle. The area of the figure is 200 sq. feet. The minimum perimeter of the figure is ___ft.

76. ## Math

This is a fill in the blanks. The lowest common multiple is the ________ number the given numbers divide into evenly

77. ## math

Write 7,030,000,000 in scientific notation

78. ## Math

Find the LCM of 12 and 15 Find the LCM of 16 and 20

79. ## Calculus

A car traveling at 72 mph starts braking and decelerates at a constant rate. the car takes 1/9 of a mile to stop. Find, to the nearest half-second, how long it took the car to cover the 1/9 of a mile. I don't need the whole thing done. Just don't know how

80. ## Foundations Math 12

48 weeks ago, Gabriella invested at 3.9% interest, compounded weekly. Today, her investment is worth \$225.50. How much interest has Gabriella's account earned in the past 48 weeks?

81. ## Math

Find the lowest common multiple for 16 and 20

82. ## English ms sue

Can you check my answers? From the words below, supply the words needed to complete the sentences. Peerless, sporadic, bravado, perceptive, stoic, and stymied C. His reckless BRAVADO caused a bad accident. Although he had broken his leg, he was rather

83. ## English ms sue

Can you check my answers? From the words below, supply the words needed to complete the sentences. Gibes, squalid, bludgeoned, ghastly, and stupor. A. After living in a mansion,his present apartment seemed SQUALID. Sitting before the fire in the small

84. ## Science

Classify reaction as addition, displacement, or decomposition: Al(s)+NaOH(aq)=Al(OH)3(s)+Na+(aq)

85. ## physics

A block with a mass of 1.0kg is lifted up slowly from ground (0m) to height of 0.51m. block is slowly displaced horizontally by .10m. find total work done to displace block vertically and horizontally. Then find total work to lift block and move it

86. ## Math

Which equation is equivalent to 3 ln 2 – ln 4 + 5 ln x = ln 3 + 2 ln 5? ln 2x5 = ln 75 ln (5x + 2) = ln 75 ln 2x5 = ln 13 ln (5x + 4) = ln 96

87. ## Calculus

Sorry for all of the questions.. if f'(x) exists for all x and f(-1)=-12 and f(5)=12, then for at least one value of c where -1

88. ## ENG 225

Why do many theorists doubt that genres exist at all?

89. ## physics

A 45.4 kg sign is hanging in two wires as illustrated below. If angle A is 53.5 degrees and angle B is 29.6 degrees, what is the tension in the left wire? Give your answer in newtons

90. ## Math

Here are some multiple questions: One out of every 5 "Choco-Delite" candy bars contains a 50 cents coupon. If Alex wants 15 coupons, how many candy should he buy? a) 3 b) 20 c) 75 d) 100 What is the average of 10, 5, 3, 6, 14, 5, 6 and 7 a)7 b)8 c)56 d)9

91. ## Physics

In the annual battle of the dorms, students gather on the roofs of Jackson and Walton dorms to launch water balloons at each other with slingshots. The horizontal distance between the buildings is 40.0 m, and the heights of the Jackson and Walton buildings

92. ## statistic

A basketball player makes 80% of her free throws. Recently during a very close game, she shot 5 free throws near the end of the game and missed 3 of them. The fans booed. What is the probability of her missing 3 (or more) free throws out of 5? Set up and

93. ## Math

What is important to keep congruent?

94. ## Math

When solving A system by graphing how can you tell if the solution is the equation of the line

95. ## Calc

Find the coordinates of the point on the curve xy=6 in quadrant I where the normal to the curve passes through the origin.

96. ## physical science

calculate the weight of a man with a mass of 80.0kg on the surface of the moon 156N?

97. ## Intermediate Algebra

Solve the system of equations by graphing. Then classify the system. f(x)=x+1 g(x)=-8x+10 What is the solution of the system? a)The solution is___? b)There are infinitely many solutions c)There is no solution Is the system consistent or inconsistent?

98. ## Math

On one test, Chi answered 76 out of 100 questions correctly . On another test , he answered 7 out of 10 questions corrctly. Write these scores as decimals and compare them. I don't know..

99. ## Math help mrs sue

When solving A system by graphing how can you tell if the solution is the equation of the line

100. ## Mrs sueeee

Substitution X-6y=4 3x-18y=4

101. ## physical science

the diameter of the planet saturn is 10 times that of the earth but the mass of the planet is only 90 times greater than that of the earth.what is the gravitational acceleration or number gs you will feel on saturn?(8.8m.s-2)

102. ## math mrs sue

Elimination X+2y=5 -3x+6y=15

103. ## Math

Elimination 4x-7y=23 3y=-6x+33

104. ## math

how to solve j = 7k + 5

105. ## Chemistry

1. A student uses 6M HCl solution contaminated with Al(NO3)3 to wash the nichrome wire in between recordings of emission spectra for the different known and unknown metal ion solutions. The emission energies for the aluminum are 3.90x10^-19 J/atom,

106. ## Chemistry

Compare and contrast the combustion of sugars to biological metabolism of sugars

107. ## Chemistry

i need to write to chemical formula for sulphur(II)iodide but both are non metals what do i do and i get confused sometimes cause i don't know when the metal/non metal gets a one charge (for the valences) ex. NiO =Ni1O2 =Ni2O =Nickel(I)Oxide ex. NiF2

108. ## algebra

Solve the absolute value equation 4x-1=1 answers are. X=2 or x=0,, x=0or x=-1/2, x=0or x=1/2, x=2 Oryx=-1/2

109. ## math

The telephone company has 25 computer controlled switching systems. Each system handles 700,000 calls an hour. The system works at 96% accuracy. How many calls would not accurately

110. ## algebra

Solve value equation 4x-1=1

111. ## Intermediate Algebra

Solve the following system of equations. x+4y=5 x=6-4y What is the solution of the system? a) The solution of the system is ___? (TYPE AN ORDERED PAIR) b) There is no solution

112. ## Chemistry

Equation: Fe+CuCl2>FeCl2+Cu The ratio of moles of copper produced to moles of iron reacted should be 1:1,but I get 60:17 in lab,can you state at least 3 errors for me?

113. ## physics

How far from Earth will Venus be today?

114. ## Astronomy

How large should Venus appear in arc seconds? Use the small angle formula and the diameter of Venus. Note that an arc second is a 1/60th of an arc minute, and an arc minute is a 1/60th of a degree.

115. ## precal

1.a) Find the domain of f(x) = x + log(2x – 5) b) Find the domain for f(x)= 5x + ln(x^2+3x-4) 2. Solve: 4^x +12 = 16^x

116. ## Astronomy

Why is the portion of Venus opposite the direction of the Sun not apparent.

117. ## Chemistry

If the tongs used in the experiement were made of pure iron, what might happen if the tongs were allowed to remain in contact with the CuCl2 solution?

118. ## Astronomy

Why is the portion of the Moon opposite the direction of the Sun not apparent?

119. ## Stats

Suppose that you are in a class of 31 students and it is assumed that approximately 10% of the population is left-handed. (Give your answers correct to three decimal places.) (a) Compute the probability that exactly five students are left-handed. (b)

120. ## Science

These questions refer to tides. 1. Why are vertical clearances of bridges along navigable waterways given as heights in feet above mean(average) water height? 2. Why would knowledge of tides be of any importance in a military landing action?

121. ## Chemistry

Consider the equation A(aq) + 2B(aq) 3C(aq) + 2D(aq). In one experiment, 45.0 mL of 0.050 M A is mixed with 25.0 mL 0.100 M B. At equilibrium the concentration of C is 0.0410 M. Calculate K.

Can you change the hard English words to easy ones and make the long sentences a little bit short for me? I have to memorize it and perform it, so I need this monologue to be easier. Monologue:Shakespeare's relationship with Robert Greene For seven years,

123. ## Math

3 apples and a pineapple equally balances 10 oranges. Also,6 oranges and an apple equally balances a pineapple. How many oranges balance a pineapple?

124. ## A Opinion From Ms. Sue

What do you think? Does it require any improvements? Do you find what I have written persuasive? What do you suggest? What I have been assigned: "[w]rite a 3-paragraph editorial that tries to persuade students at the University of Georgia to accept

125. ## Intermediate Algebra

In 1992, the life expectancy of males in a certain country was 71.1 years. In 1997, it was 73.4 years. Let E represent the life expectancy in year t and let t represent the number of years since 1992. The linear function E(t) that fits the data is

126. ## Calculus

What is the integral of [(2x-y)^3]dx?

127. ## physics

A softball having a mass of 0.29kg is pitched at 97km/h . By the time it reaches the plate, it may have slowed by 8.0%. Neglecting gravity, estimate the magnitude of the average force of air resistance during a pitch, if the distance between the plate and

Ms. Madeja is planning a trip to Trenton, NJ and the map has a scale indicator of 3/4 inch=25 miles Ms.Madeja measured 6 and 3/4 inches in Trenton.What is the distance she will travel...please help, thanks. (A)20.25 miles (B)225 miles (C)27.78 miles

129. ## Calculus

What is the integral of [(2x-y)^2]dx?

Sally bakes two cakes, a square and a circle. The length of the side of the square cake is 8 inches. Find the area and the perimeter of the cake heart.

131. ## Math

Three students drank 2 liters of lemonade in all. How many liters did one student drink if all three drank equal amounts of lemonade?

132. ## chemistry

A volume of water delivered using a buret has a mass of 2.67 g. What was the final volume reading on the buret if the inital volume reading was 0.12 ml? [assume the density of water is 1.00g/mL]

133. ## Astronomy

Why is it possible to see Mercury at 6:45 pm on February 5, 2014?

134. ## Physical Science

can I get some help with these questions. im not sure on these ones During the stage of internal combustion engine operation in which the piston rises and compresses the fuel in the combustion chamber, a. both the intake and exhaust valves are open b. the

135. ## Chemistry

Equation: Fe+CuCl2>FeCl2+Cu We put two iron nails into the copper chloride solution:1. mass of empty dry beaker:103.64 2. mass of two iron nails, before reaction:1.20 3. mass of two iron nails after reaction: 1.01 4. mass of beaker and copper (dry):104.4

136. ## chemistry

What is the density of a block of unknown material with a mass of 17.02 g if the dimensions are: length = 2.2 cm height = 1.7 cm width = 2.7 cm

137. ## chemistry

What is the density of a 33.13 g irregularly shaped object if the initial volume of water was 22.9 ml and the volume rose to 64.8 ml after the object was added?

138. ## science

if you have two samples of the same volume. the mass of sample A is higher than that of sample B. which sample has the greatest density?

139. ## Quick math help

Can some please help me work out each of these systems? 2. 4x-y=9 Y+2x=12 3. X+3y=13 Y=5-x 4. 3a+b=6 a=10-3b

140. ## maths

the first three terms of a geometric sequence are: t1; t2 and t3. if t2=t1-4 and t3=t2-9. determine the values of t1; t2 an t3

141. ## statistics

Researchers found that 30% of the larch trees in a certain geographical area had been damaged by fungi. (No fun, guy.) Consider a sample of 20 (independent) beach trees from the area. (a) What is the probability that fewer than half are damaged by fungi?

142. ## science

A lever scale is balanced with a beaker filled of air on one side. The scale is very sensitive and can easily measure a change in weight of about 1/2 mg. What happens If you put your finger carefully into the beaker without touching the glass?

143. ## Math

A car was purchased for \$36,730. The following equation can be used to predict the value of the car based on it age, where t stands for the time in years: A = 36730(.82)t. If the car was purchased in March 2002, what will its value be in September 2009?

144. ## MATH

Epicure Market prepares fresh gourmet entrees each day. On Wednesday, 80 baked chick dinners were made at a cost of \$3.50 each. A 10% spoilage rate is anticipated. Question 1: At what price should the dinner be sold to achieve 60% markup based on selling

145. ## science

A Boy of mass 25 kg climbs atop a playground slide of height h= 3 m. When the boy slides down the inclined board, the work done to overcome friction is 550 Joule. What is the boy’s speed before he touches the ground.

146. ## NEED HELP PLEASE CHECK TO SEE IF THIS CORRECT

A basketball player makes 80% of her free throws. Recently during a very close game, she shot 5 free throws near the end of the game and missed 3 of them. The fans booed. What is the probability of her missing 3 (or more) free throws out of 5? Set up and

147. ## physics

Two parallel plates separated by a distance of 2.0 x 10^-2 meter are charged to a potential difference of 1.0 x 10^2 volts. Points A, B, and C are located in the region between the plates. Calculate the magnitude of the electric field strength between the

148. ## Quick math help

Can some please help me work out each of these systems? 1. 4y=13+2x 6x+4y=9 2. Y=6-2x 5x=14-3y 3. 4x-6y=15 6x=10+4y

149. ## Geometry

The perimeter of a rectangle is 102 inches, and the length of the diagonal is 39 inches. Find the dimensions of the rectangle.

150. ## Intermediate Algebra

Solve the system of equations by graphing. Then classify the system. y=-x-13 5x-4y=-20 What is the solution of the system? a)The solution is___? b)There are infinitely many solutions c)There is no solution Is the system consistent or inconsistent?

151. ## English- ms sue

Can you check my answers? From the words below, supply the words needed to complete the sentences. Blatant, ghastly, buffoon, paucity, peerless, and glutton. A. His BLATANT foolishness caused many in the class to dislike him. Later, they would refer to him

152. ## English- ms sue

Can you check my answers? From the words below, supply the words needed to complete the sentences. Gibes, squalid, bludgeoned, ghastly, and stupor. A. After living in a mansion,his present apartment seemed GHASTLY. Sitting before the fire in the small

153. ## Algebra

Write in general form - ax^2+bx+c Vertex: (-1,-1) point on the graph: (0,4)

154. ## Chemistry

If 0.10 mol of Zn(s) is reacted to 150.0 ml of 1M HCl, what is the concentration of Zn+2 in the solution after the reaction is complete? Assume the solid zinc does not affect the volume.

16x3/8

156. ## English - ms sue

Can you check my answers? From the words below, supply the words needed to complete the sentences. Peerless, sporadic, bravado, perceptive, stoic, and stymied C. His reckless BRAVADO caused a bad accident. Although he had broken his leg, he was rather

157. ## Math

A car was purchased for \$36,730. The following equation can be used to predict the value of the car based on it age, where t stands for the time in years: A = 36730(.82)t. If the car was purchased in March 2002, what will its value be in September 2009?

158. ## Math

tan(4x − 4)° = cot(3x + 10)°

159. ## physics

A proton has a charge of e= 1.6 x 10^-19 C. (a.) Calculate the electric field produced by the proton 10 cm away. (b.) what is the magnitude of the electric potential at the same position (10cm)?

160. ## pre-calculas

rationalize the denominator: 5 + the sq. rt. of 3 ________________________ 4 + the sq. rt. of 3

161. ## Management

On an organization chart, span of control refers to the

162. ## pre-cal.

simplify: 2(x+h)squared+5(x+h)-6-(2x squared + 5x - 6)

163. ## algebra I

drop a ball at 30000 feet at 30 feet per second and a ball bounces up at 40 feet per second what height do they meet and what speed

164. ## Editorial Evaluation (Writeacher)

What do you think now? I tried to follow your advice as well as the instructions in the website link you provided for me. Correction: "As a student, why have you enrolled in the University of Georgia? What do you wish or intend to gain? You might answer by

165. ## Statistics

a) What is sampling with replacement? (b) What is sampling without replacement? c) How does sampling without replacement affect the probability of events, compared to sampling with replacement?

166. ## AP Chemistry

To what temperature must a sample of helium gas be cooled from 110 degrees C to reduce its volume from 4.9 L to 0.7 L at constant pressure? Answer in units of K

167. ## solid mechanics

Q.1 The normal stresses at a certain point in a body are 80MPa tension and 50Mpa compression. There are also shear stresses across the plane of tension and compression equal to 30MPa.Calculate the maximum direct stress and maximum shear stress in the

168. ## Foundations Math 12

Determine the term of a \$46000 investment with an interest rate of 3.9%, compounded monthly, if the future value is \$100000. Round your answer to the nearest year. - I know I use the rule of 72 but what do you do after that?

169. ## solid mechanics

At a point in a strained material the principal stresses are 60MPa and 40Mpa. Find the position of the plane across which the resultant stress is most inclined to the normal and determine the value of this stress. (Ans:50degree45' with the major principal

170. ## Social Studies

How do the principles of wisdom, moderation, and justice apply to your rights and responsibilities as a citizen?

171. ## math

The smith family is going on a five day journey. On tuesday the cover 7 over 24 of the total distance, on Wednesday 11 over 48 on Thursday 3 over 16 and on Friday 1 over 8. a). What percentage of the journey do they cover on Thursday? b). What fraction of

172. ## Math

The endpoints of a diameter of a circle are (3, 4) and (7, –2). What is an equation of the circle?

173. ## Foundations Math 12

Kelly is planning to renovate her house. She intends to spend \$200000. She invests \$150000 in an account at 5.3% interest, compounded monthly. It will take Kelly ____ years to meet her goal, to the nearest tenth of a year.

174. ## AP Chemistry

Nitroglycerin is a shock-sensitive liquid that detonates by the reaction 4C3H5(NO3)3(ℓ)-> 6N2(g)+10H2O(g)+12CO2(g)+O2(g) Calculate the total volume of product gases at 201 kPa and 273 degrees C from the detonation of 3.3 lb (1496.9 g) of nitroglycerin.

175. ## Foundations Math 12

Bathsheba is saving up for the down payment on a farm. She invests \$30000 at 5.2% interest, compounded quarterly, for 4 years. To the nearest tenth of a percent, Bathsheba's rate of return will be ____%.

176. ## AP Chemistry

What pressure would a mixture of 3.2 grams of O2, 6.4 grams CH4, and 6.4 grams of SO2 exert if the gases were placed in a 4.1 liter container at 127 degrees C? Answer in units of atm

177. ## AP Chemistry

A 2.8 gram sample of a gaseous substance occupies 12 L at 47 degrees C and 683 torr. What is the density of the gas under these conditions? Answer in units of g/L

178. ## maths

body of weight is inversely propotional to square of its distance from center of earth,radius of the earth is 6380 km, how much 80 kg man weigh 1600 km from the surface of earth

179. ## AP Chemistry

We observe that 5 grams of a gaseous com- pound occupies 2083 mL at 50 degrees C and 574 torr. What is the molecular weight of the compound? Answer in units of g/mol

180. ## AP Chemistry

Part 1 of 3: An apparatus consists of a 2 L flask containing nitrogen gas at 30 degrees C and 758 kPa, joined by a valve to a 11 L flask containing argon gas at 30 degrees C and 49.7 kPa. The valve is opened and the gases mix. What is the partial pressure

181. ## Biology

What type of cell does our brain use to control muscle movement? A)sensory neurons B)retinas C)synapses D)motor neurons I think the answer is D, but I'm not 100% sure.

182. ## math

Find the GCF and LCM of 15 and 50

183. ## m, ,.

Systole is the ________ phase of the cardiac cycle. A. Contraction B. Relaxation C. Monitoring D. Termination

184. ## AP Chemistry

A 1277 mL sample of nitrogen (N2) was collected by displacement of water at 24 degrees C under a total barometric pressure of 966 torr. What mass of dry nitrogen was collected? The vapor pressure of water at 24 degrees C is 22 torr. Answer in units of g

185. ## AP Chemistry

The rate of effusion of unknown gas X is found to be about 1.5 times that of SF6 gas (MW=146 g/mol) at the same conditions of temperature and pressure. What is the molecular weight of gas X? Answer in units of g/mol

186. ## MATH

Lucy was helping her parents construct a concrete birdbath in her backyard. they had a cone shape and a flattened cylinder. how did they put this birdbath together?

187. ## Physics

A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 3.6 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of 60° when they move past the

188. ## Maths

divide 27 into two parts such that their product is 176

189. ## Math

How to find coordinates of vertex, and find out if the function has minimum or maximum value and find that value? f(x)=2x^2+8x+9 & f(x)=-x^2-2x+7 Please explain..I'm very lost. :(

The basic retailing equation states that the cost of an item is not equal to the selling price plus the markup. TRUE or FALSE

191. ## physics

what forms of energy does pendulm have/

192. ## English

Can you read this essay first, and then tell me how I should block the scene and perform it, I have no idea how I should do this. Hi, I'm William Shakespeare. I had disappeared from the records for seven years. Many rumors flew around, including that I

193. ## Personal Dimensions of Education

The majority of the people in the field of education ______ proponents for education reform and resource equity across socio-economic divides. Which is the correct word? *is or are*

194. ## Personal Dimensions of Education

Select the correct form of the verb provided to correctly complete the sentence. This week’s “Steal of the Week” claims that there _____ hotel specials available in Las Vegas for \$18.00 a night at several of the five star casinos. is are

Identify the underlinded conjunctions in the following excerpts from "The Interlp[ers" as "coordinating," "correlative," or "subordinating." 1. ..a man stood one winter night watching _and_ listening, _as though_ he waited for some beast of the woods to

196. ## Personal Dimensions of Education

Which is the sentence that has correct subject-verb agreement. 1)If anyone need to buy a new laptop, give her or him my contact information. 2) If anyone needs to buy a new laptop, give her or him my contact information.

197. ## algebra

The area of a rectangle is 44yds squared, and the length of the rectangle is 3yds less than twice the width. what is the length and width

198. ## Personal Dimensions of Education

Which is the correct form of the verb provided to correctly complete the sentence. Some of the references ______ to have been lost in translation. 1) seem 2) seems

199. ## Personal Dimensions of Education

Which is the correct form of the verb provided to correctly complete the sentence. Either the additional resources provided or the textbook _____ the information required to respond appropriately to this week’s discussion prompt. 1)has 2)have