1. science

A simple model for a person running a 100m race is to assume the sprinter runs with constant acceleration until reaching top speed, and then maintains that speed through the finish line. If a sprinter reaches their top speed of 11.2ms-1 in 2.15s, what will

2. Chemistry

What is the specific gravity of alcohol having a density of .79 g/mL?

3. Maths

A uniform cylindrical container is half filled with water. The height of the cylinder is twice its diameter. The cylinder is gradually tilted until the water touches the brim. At this instant, the container is inclined at which angle: 1.30 2.45 3.60 4.75

Write a short essay in which you create an analogy to describe particle motion. Compare the movements and positions of people dancing with the motions of water molecules in liquid water and in water vapor. I am NOT asking anybody to do this for me, all I

5. Chemistry

1.42 g/cm^2 to mg/mm^2

6. ENGLISH

3. What is the rhyme scheme of the following Anne Bradstreet poem? To Her Father with Some Verses Most truly honored, and as truly dear, If worth in me or ought I do appear, Who can of right better demand the same Than may your worthy self from whom it

7. Chemistry

A student found that her mixture was 15 percent NH4cl 20 percent NaCl and 75 percent Sio2 Assuming her calculations are correct what did she most likely do incorrectly in her experiment?

8. Elementary Statistics

Heights of women have a bell-shaped distribution with a mean of 161 cm and a standard deviation of 7 cm. Using Chebyshev’s theorem, what do we know about the percentage of women with heights that are within 2 standard deviations of the mean? What are the

9. Chem

Diamonds are measured in carats (1.0 carat=0.200g). The density of diamond is 3.51 g/cm^3. What is the VOLUME of a 5.0 carat diamond?

10. chemistry

Methanol, CH3OH, a colorless, volatile liquid, was formerly known as wood alcohol. It boils at 65.0°C and has a heat of vaporization of 37.4 kJ/mol. What is its vapor pressure at 22.0°C?

11. AP Chemistry

The reaction of 8.7 grams of ﬂuorine with excess chlorine produced 3.9 grams of ClF3. What percent yield of ClF3 was obtained? Answer in units of %

12. chemistry

Sodium (Na) metal undergoes a chemical reaction with chlorine (Cl) gas to yield sodium Cl, or common table salt. If 1.00 g of sodium reacts with 1.54 g of chlorine, 2.54 g of sodium chloride is formed and 17.9 kJ of heat is released. How much sodium and

13. Math

An employee has an annual salary of \$26,965. After he arranges to have deducted from his salary 12% for the purchase of bonds, 17% for federal withholding tax, and 3% for a retirement fund, what is the amount of his monthly check?

14. finite math

suppose that 3 digits are selected at random from the set S={1,2,3,4,5,6} and are arranged in random order. Find the probability that the resulting 3-digit number is less than 300.

15. calculus

A 0.2 ml dose of a drug is injected into a patient steadily for 0.75 seconds. At the end of this time, the quantity,Q, of the drug in the body starts to decay exponentially at a continuous rate of 0.2 percent per second. Using formulas, express Q as a

16. Personal Finance

Jo Bower owns 150 shares of Data General stock. She purchased the stock for \$24 a share. She sold her stock for \$30 a share. The commissions required to buy and sell her stock totaled \$120. Assuming that she received no dividends during the time she owned

17. Math

You invested \$14,000 in two accounts paying 5% and 9% annual interest, respectively. If the total interest earned for the year was \$820, how much was invested at each rate?

18. math

if cos x= 2/5, what is the measure of less than x, to the nearest degree?

19. physics

Hello everyone, I need help with this question: A dart gun is fired while being held horizontally at a height of 1.00m above ground level and while it is at rest relative to the ground. The dart from the gun travels a horizontal distance of 5.00m. A

20. Statistics

The distribution of heights of women aged 20 to 29 is approximately Normal with mean 63.6 inches and standard deviation 3 inches. The height (± 0.1 inch) of the middle 68% of young women falls between a low of inches and a high of inches.

21. physics

A place kicker must kick a football from a point 38.2 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ground with a speed of 20.6 m/s at an angle of 53° to the horizontal.

22. math

Can someone please help me with this word problem!?! I know the answer which is 784 feet. But I have no clue how to solve it. Can someone please show how to solve this problem? The word problem is: The melt in Your Mouth Chocolate Factory is a rectangular

23. chemistry

if 7.o moles of sulfur atoms and 10 moles of oxygen molecules are combined to form the maximum amount of sulfur trioxide, how many moles of which reactant remain unused at the end?

24. Chemistry

If a soft-drink bottle whose volume is 1.50 is completely filled with water and then frozen to -10 , what volume does the ice occupy? Water has a density of 0.997 at 25 ; ice has a density of 0.917 at -10 . Could you also explain the steps as to how I

25. physics

Find the tension T2 of the box hanging from the rope if 1 = 25°, 2 = 65°, T1 = 60.58 newtons, and W = 143.4 newtons

26. math

which integer represents a gain of 9 yards in a football game

27. Math

Find two quadratic functions, one that opens upward and one that opens downward, whose graphs have the given x-intercepts. (-3, 0), (-1/2, 0)

Which is more 0.33 or 0.333?

29. Physics

A balloonist, riding in the basket of a hot air balloon that is rising vertically with a constant velocity of 9.5 m/s, releases a sandbag when the balloon is 44.3 m above the ground. Neglecting air resistance, what is the bag's speed when it hits the

30. History

Humans modify the environment in places they live. For example, people convert fields and forests into towns and irrigate arid land to support farming. Give 2 examples of ways people have modified the environment where we live.

31. Managerial Accounting

Sandusky Inc. has the following costs when producing 100,000 units: Variable Costs \$400,000 Fixed Costs 600,000 An outside supplier is interested in producing the item for Sandusky. If the item is producing outside, Sandusky could use the released

32. Sentences,fragments,run ons

I have answered each group of words and would like someone to check them please. I just want to know I am on the right track, and understand this. Identify whether each group of words is a complete sentence, fragment, or a run-on. 1. Which was in built in

Find the greatest and least when rounded to the nearest hundred. A plane flew an estimated distance of 800 kilometers. The greatest distance the plane could have flown is? The least distance he could have flown is?

34. CHEM

A student used 10 mL water instead of 30 mL for extraction of salt from mixture. How may this change the percentage of NaCl extracted? My book says: % NaCl= (grams of NaCl / total grams of mixture) x 100 What I don't get is if it does change the

35. physics

Hello everyone, I need help with this question: A bartender slides a glass of beer down a bar with an initial velocity of 2m/s. The coefficient of kinetic friction of the bar is 0.05 and the length of the bar is 3m and the height of the bar is 1m. The mas

36. Chemistry

What is the solubility of benzoic acid in room temperature water. Report this in grams/L.

37. physics

A runner is jogging at a steady 2.3 km/hr. When the runner is 8.4 km from the finish line, a bird begins flying from the runner to the finish line at 9.2 km/hr (4 times as fast as the runner). When the bird reaches the finish line, it turns around and

38. Algebra 1

How many solution sets do systems of linear inequalities have? Do solutions to systems of linear inequalities need to satisfy both inequalities? In what case might they not?

39. physics

A car starts from rest and travels for 6.0 s with a uniform acceleration of +1.2 m/s2. The driver then applies the brakes, causing a uniform acceleration of -1.8 m/s2. The breaks are applied for 1.70 s. (a) How fast is the car going at the end of the

40. physics

A 49-kg lead ball is dropped from the leaning tower of Pisa. The tower is 55 m high. (c) What is the speed of the ball 1.3 s after it is released?

41. physics

A cannon on a level plain is aimed 50 degrees above th e horizontal and a shell is fired with a muzzle velocity of 1200 ft/s toward a vertical cliff 3200 ft away. How far above the bottom does the shell strike the side wall of the cliff?

42. Discrete Mathematics

Mathematical sequences can be used to model real life applications. Suppose you want to construct a movie theater in your town. The number of seats in each row can be modeled by the formula C_n = 16 + 4n, when n refers to the nth row, and you need 50 rows

43. AP Chemistry i need help!

A 21.5997 g sample of impure magnesium carbonate was heated to complete decomposition according to the equation MgCO3(s) → MgO(s) + CO2(g). After the reaction was complete, the solid residue (consisting of MgO and the original impurities) had a mass of

44. math

complete the pattern starts at 0.22 _ _ _ ends at 0.84 fill in the blanks

45. Physics

Large boxes of pumpkins are set on a ramp to be unloaded out of a truck. The 300.0 lb boxes are set on the ramp which has an incline of 35 degrees. They must then be pushed to get started down the plane towards the bottom. If the coefficient of the static

46. math

Assume that the box contains 5 balls: 1 yellow, 2 green, and 2 red. Balls are drawn in succession without replacement, and their colors are noted until a yellow ball is drawn. Q: How many outcomes are there in the sample space?

47. chemistry

What is the specific heat of a metal if 24.8 g absorbs 65.7 cal of energy and the temperature rises from 20.2 degrees celsius to 24.5 degrees celsius?

48. physics

You are driving down the road at a constant speed. another car going a bit faster catches up with you and passes you. draw a position graph for both vehicles on the same set of axes and note the point on the graph where the other vehicles passes you. if

49. social studies

What is an example of a nonrenewable resource?

50. Algebra 2

A phone company charges a basic rate of \$13.99 per month. In addition the user is charged \$0.10 per minute for all long distance calls made during the week and \$0.08 per minute for all long distance calls made during the weekend. Write an expression that

51. equations

decide whether each equation is true or false.For each true equation,write the number property shown by the equation.0+6=6

52. physics

A peregrine falcon dives at a pigeon. The falcon starts downward from rest with free-fall acceleration. If the pigeon is 57.0 m below the initial position of the falcon, how long does the falcon take to reach the pigeon? Assume that the pigeon remains at

53. Chemistry

1. Find each mass & which has the greater mass. 1.0 ml mercury or 1.0 ml of water 2. Find each volume & which has greater volume. 100.g gold or 100. g water

54. Chemistry

I need the formula for the question, if the hot tub heater provides 5900 kj/min, how long in hours will it take to heat the water in the hot tub from 69f to 112f? Help please

55. Math

What does "standard form" mean in 3rd grade math?

56. college math II

how do you translate the product of 10 and three more than a number in algebraic expression?

57. Physics

Three positive particles of charges 1 μC, 2 μC, 3 μC, and 4 μC, are located at the corners of a square of side 1 cm. Calculate the potential in the center of the square, taking V = 0 at a great distance.

58. Physics

(a) Find the capacitance of a parallel-plate capacitor made of two 5 cm×5 cm square plates separated by 1 mm. (b) If 50 V is applied to this capacitor, how much energy is stored?

59. English 1101 composition & rhetoric

Put these sentences in order 1-6, based on whether it is the TS(1), GD1(2), SD1(3), GD2(4), SD2(5), CS(6), of a body paragraph in a five paragraph essay. A) Benson claims that the typical family eats together once a week now; a family having dinner

60. physics

In the problem, please assume the free-fall acceleration g = 9.80 m/s2 unless a more precise value is given in the problem statement. Ignore air resistance. A stone is thrown vertically downward from the roof of a building. It passes a window 15.0 m below

61. science

an experiment for a new asthma medication was set up into two groups. Group one was given the new drug, while group 2 was given a sugar pill. the sugar pill serves as _________. a) control B)constant c) Experimental variable D) dependent variable

62. English

Can you make my answers sound more better by changing few words? and do my answers make sense? 1. What does a learner do? learner learns about variety of different things and became more knowledgeable. 2. what does a communicator do? communicator conveys

63. MATHS

Mr.Li had a big rectangular styrofoam measuring 40cm by 40cm by 30cm. He cut cubes of side 4cm from it. What was the maximum number of cubes he could cut from the rectangular styrofoam?

64. Physics

A shopper pushes a cart 50 m south down one aisle and then turns 90.0° west and moves 19 m. He then makes another 90.0° turn and moves 13 m. (a) What is the largest possible displacement of the shopper? (b) What is the smallest possible displacement of

65. physics

A landing craft of mass 12000 kg prepare itself for moon landing. when at a vertical distance 160m above the moons surface its downward velocity is 15 m/s. a retrorocket is fired to give the craft an upward thrust to slow its speed to zero as it meet the

The Recall Computer Company has six territories, each represented by one salesperson. After extensive planning, the company determines that each territory would be expected to achieve the following percentages of total company sales for 2008: Territory

67. Scientific Question

Please help me check if I did my homework right base on a picture of picking strawberry farm. 1. Activity Investigation Picture Scientific Method: I. Perceiving the Problem Are these people a worker in a farm? II. Research a. Wearing different style of

Find the break-even point for the firm whose cost function C and revenue function R are given. C(x) = 180x + 12,000; R(x) = 270x

69. Physics

A racing car with mass (including the driver) of 900 kg accelerates from rest to a speed of 200 km/hr in 6 seconds. what is the power output of the engine?

70. civics

What are the main challenges to achieving justice in american society today and how can these challenges best be met?

71. math

Perry's commission rate is 18%. He invests his commission from the sale of \$8000 worth of merchandise at an interest rate of 11%, compounded quarterly. How much is Perry's investment worth after 6 months?

72. Physics

A woman weighing 500 N stands in an elevator that is traveling upward. At a given instant the speed of the elevator as well as the women is 10m/s and both are decreasing at a rate of 2 m/s2 at that instant the elevator is exerts a force on the woman that

73. Health

Our biological clocks make us feel most sleepy from? A. 9pm-5am B. 6pm-6am C. 10pm-4am D. 12am-7am

74. chemistry

If the half-life of a first-order decomposition reaction is 24.2 minutes, how long will it take for 10.0 moles of the reactant to decompose so that only 2.5 mol remains?

75. physics

A car starts from rest and travels for 4.5 s with a uniform acceleration of +1.8 m/s2. The driver then applies the brakes, causing a uniform acceleration of -1.8 m/s2. The breaks are applied for 1.80 s.

76. math

find the x intercepts of a parabola whenthe vertex is at 2,13 and y intercept at 0,5

77. math

A medication is available in 30mg. tablets. A patient is given a prescription for gr. ii. How many tablets should the patient take? I am not sure how to work this problem out, and i am confused on the gr. ii. part, i do not know what it means, please help.

78. math

there are 45 children in a class.if there are 3 more girls than boys,how many are girls?

79. Math

A circle has the equation x^2+y^2+6x-46=0 graph using (h,k) radius r A) how do i graph this properly B) intercept are?

80. Chemistry

I need the formula for the question, if the hot tub heater provides 5900 kj/min, how long in hours will it take to heat the water in the hot tub from 69f to 112f? Help please

81. Math

Ayeshe was given 3 clues concerning the value of a mystery fraction. The clues she was given are shown below. 1) I am a fraction between 1/5 and 1/4 2) My numerator is a prime number less than 10. 3) My denominator is 10 more then my numerator. What is the

82. Physics

A car accelerates uniformly from rest to a speed of 72.7 km/h (20.2m/s) in 11 second. the distance the car travels during this time.

83. math

add or subtract the following polynomials as indicated (5.9x3 + 3.4x2 -7)-(2.9x3-9.6x2 +3)

84. Math

John runs on a daily basis. He jogs 5 miles every day except Saturday. On that day he jogs 9 miles. How many miles will he jog in 4 weeks?

85. Physics

A car travels in a straight line for 3.9 h at a constant speed of 83 km/h . What is its acceleration? Answer in units of m/s2

-6(2r-4)

87. MATH

bob and his dad visted the hardward store on sunday. They observed the following transaction: Mr harris bought 4 for \$.05, Mrs Clarke bought 21 for \$1.00, Mr Montaro bought 1,134 for \$2.00 and Ms. Park bought 450 for \$1.50. What were they buying?

88. medical

According to the AMA, what is a key reason behind a physician's duty of confidentiality to a patient?

89. Chemistry

The biomass formula for a yeast is CH1.66 00.269 N0.194. The formula accounts for 92% of dry mass; the other 8% is inorganic material (ash). When grown on C6H14, the yield on biomass is 1.4 gcell/gsubstrate. What is the respiratory quotient (mole CO2

90. physics

Two students are on a balcony 21.4 m above the street. One student throws a ball, b1, vertically downward at 13.2 m/s. At the same instant, the other student throws a ball, b2, vertically upward at the same speed. The second ball just misses the balcony on

91. Logarithms

I need help evaluation the following: 1.) (1/15)^2.309 It says hint: set the expression = x and take the logs of both sides. I did: x=(1/15)^2.309 logx = log(1/15)^2.309 = 2.309 log(1/15) and I don't know how to proceed or if I'm on the right track. 2.)

92. statistics

The mean of a normal probability distribution is 100 and the standard deviation is 8. About what percent of the observations lie between 84 and 116?

93. Pre Calc

How do you find cot(225degrees) using the unit circle?

94. Statistics

The Insurance Institute for Highway Safety conducted tests with crashes of new cars traveling at 6 mi/h. The total cost of the damages for a simple random sample of the tested cars are listed below. Based on these results, is damage of \$10,000 unusual? Why

95. Algebra

A poll was taken of 100 students on how they got to campus. 33 drove alone, 35 rode in a carpool, 26 rode public transportation, 6 used both carpool and public transportation, 8 used both a carpool, 6 used buses as well as their own cars, 5 used all three

96. geology

Below are descriptions of samples, with known ages expressed as either AD or BC (also called BCE). Convert these dates to BP dates (using 1950 as "the present.") 1. Wood from Egyptian coffin - from the Ptolemic period based on style. Date: 200 ± 150 years

97. Science

Please help me check if I did my homework right base on a picture of picking strawberry farm. 1. Activity Investigation Picture Scientific Method: I. Perceiving the Problem Are these people a worker in a farm? II. Research a. Wearing different style of

98. science... Help me urgent!!

Please help me check if I did my homework right base on a picture of picking strawberry farm. 1. Activity Investigation Picture Scientific Method: I. Perceiving the Problem Are these people a worker in a farm? II. Research a. Wearing different style of

what physical force can cause a change in the state of matter what is the difference between chemical and physical changes what occurs during Bose-Einstein condensation Please help me.

100. college alg

find the equation of a line that is parallel to the line x=6 and contains the point (-8,9) please show work, it also wants me to show the answer in an equation

101. Johan

Given angle 1 = (x + 7)degree, angle 2 = *(2x -3)degree, angle ABC = (x 2nd power) degree, angle D = (5x - 4)degree. Show that angle ABC congruent to angle D I can't seem to solve this?

102. Physics

A projectile, fired with unknown initial velocity, lands 20.8 s later on the side of a hill, 2900 m away horizontally and 411 m vertically above its starting point. (Ignore any effects due to air resistance.) (a) What is the vertical component of its

103. Physics

A speeder passes a parked police car at a constant speed of 23.9 m/s. At that instant, the police car starts from rest with a uniform acceleration of 2.21 m/s 2 . How much time passes before the speeder is overtaken by the police car? Answer in units of s

104. Math

for the given functions f and g find the following and state the domain of each result f(x)=3x+1/8x-9; g(x)=5x/8x-9 A) (f+g)(x)=? B)domain of (f+g) c) (f/g)(x)=? d) domain of f/g? please show work

105. Algebra Enrichment

5b(b+3)-8(1-b)

106. physics

Consider a position-time graph. The position is to be graphed 1. along the horizontal axis. 2. along either axis you choose. 3. along the vertical axis.

107. math, medical

A medication is available in 30mg. tablets. A patient is given a prescription for gr. ii. How many tablets should the patient take? I am not sure how to work this problem out, and i am confused on the gr. ii. part, i do not know what it means, please help.

108. Accounting for Managers

Question 1 of 20 5.0 Points In comparing management accounting with financial accounting, which of the following statements is FALSE? A. Management accounting is primarily used by managers, employees, and supply chain partners. B. The report format for

109. math

12x^2y-6xy^2/3xy

110. Religion

Discuss the ways that two religious traditions approach the problem of evil and establish a moral code for believers. Compare and contrast the two approaches.

111. Chemistry

A liquid has a density of 0.98 g/mL, what is the mass of 8.0 mL? And show work.

112. Math

Use the expression 12*12 to answer the question below A. Write the expression using exponential notation B. What is the base? C. What is the exponent? D. WRite the expression in expanded form. C?

113. algebra

Tanner earns a commission of \$1415.04 selling \$6432 worth of electronics. What is the commission rate?

114. social studies

which of these is not like the others 1.John Winthrop 2.James Oglethorpe 3.William Penn 4.Roger Williams I think that it would be John Winthrop because all the rest started colonies which later became state names but i don't think that is sufficient

115. math

By selling a home without using a realtor, Barb can avoid paying a 7.25% commission. She received an offer of \$275,000 from a potential buyer. In order to give a comparable offer, for what price would a realtor need to sell the house? Round to the nearest

116. algebra

pi*7=7*pi would this be associate property of multiplication

117. history

The _________ expressed the darkest and most ominous aspect of the rural counterattact of the earlt 1900s.

118. physics

A car starts from rest and travels for 5.2 s with a uniform acceleration of +1.8 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.0 m/s2. The breaks are applied for 2.00 s. (a) How fast is the car going at the end of the

119. English

Did help with finding the authors purpose and main ideas in this article "A Generation Hobbled by the Soaring Cost of College by Andrew Matin and Andrew Lehren in the New yOrk times

120. organic chemisrtry

What is high molecular symmetry and low molecular symmetry and give examples of both please

121. organic chemisrtry

How do melting points differ for ionic compounds versus those that contain only covalent bonds? Why is this so (explain)?

122. organic chemisrtry

What is a stretch (symmetric versus asymmetric)? What is a bend? ionterpreting infrared spectra NEED HELP PLEASE!!!!!!!!!!!!!!

123. Algebra

A car dealer sells you a car for 6,980.00 with 980.00 down. What is the APR?

124. Chemistry

What is the density of a copper block that is 8.96g/cm^3 in ounces/pint? I did all the conversions and the answer I got was 150ounces/pint? Is this correct? How to I solve this problem?

125. Algebra

Determine the comparable interest rate for a 80,000 loan when the quoted information is 10.7% + 0.5 pt.+ \$400.00 Round to 2 decimal places

126. US history

Indicate below the type of government each colony had in the year 1750. 1 NEW HAMPSHIRE; ROYAL 2 MASSACHUSETTS; ROYAL 3 CONNECTICUT; SELF-GOVERNING 4 RHODE ISLAND;SELF-GOVERNING 5 NEW YORK; SELF-GOVERNING 6 NEW JERSEY;ROYAL 7 PENNSYLVANIA;PROPRIETARY 8

127. Algebra

In a recent survey of 100 women the following information was gathered. 32 use shampoo A, 39 use shampoo B, 40 use shampoo C, 12 use A and B, 10 use A and C, 10 use B and C, 7 use all three

128. Chemistry

If the pressure of 2.50ml gas were doubled from 0.500atm to 1.00atm what would be the gas volumn at the new pressure?

129. Geometry

Find the measure of the angle formed by the hands of a clock at 9:43. Thanks!

130. math

A year on Mars is 686 Earth Days. (1) Whicch is longer, a year on Mars or a year on Earth. (2) By how many weeks is it longer? Please explain how you got the answer. My answer was 82 1/2 weeks longers

131. New Kingdom Of Egypt (Please Review Again!)

Alright, so Thanks so much! I made some corrections! How does it sound now? Anything I should change? Is everything grammatically correct? Thanks so much! New Kingdom of Egypt By: Bryce R The New Kingdom of Egypt had a great impact on the Egyptian

132. college math

last month bill's electric bill was \$80.77. This month , bill bill was \$69.06. what is the%degrease

133. physics

An elevator is moving upward at 0.93 m/s when it experiences an acceleration 0.29 m/s2 downward, over a distance of 0.67 m. What will its final velocity be?

134. AP Chemistry

For the reaction ? C6H6 + ? O2 ↽⇀? CO2 + ? H2O a maximum of ? moles of CO2 could be formed from 6.38 mol of C6H6 and 6.03 mol of O2. Answer in units of mol

135. Chemistry/Physics

The equation needed to solve for volumetric flow rate = flow area * velocity How do you calculate flow area when all is given is velocity 1 m/s and 6000 m^3.

136. Honors Pre-Calculus

The prompt says "Graph each function. Determine the interval[s] for which the function is increasing and the interval[s] for which the function is decreasing." The problems that are given in this prompt are: 1. y= x^3+3x^2-9x 2. f(x)=1/(x+1)-4 3.

137. Physical Chemistry

Take 3.00 mol of an ideal gas at Pi=25.0 bar, Vi=4.50L, and expand it isothermally. Calculate the work done in two different processes. a. Reversible expansion at Pf=4.50 bar b. Irreversible expansion at Pext=4.50 bar

138. english

Imperative Interrogative Declarative Exclamatory 1.what a ball game this 2.Wear your boots in the rain. imperative

139. Logarithms

1.) A fossil is burned and the CO2 produced is captured. It produces 453 counts of radiation per gram. Under the same conditions atmospheric CO2 produces 19 277 counts. Calculate the age of the fossil. I have the formula: Nt = N0 e^ -t(ln2)/T Nt is the

140. math

Write the following number in all three forms of expanded notation: -273.32

141. Chemistry

Which car gets the best mileage? Car A gets 32 miles per gallon Car B gets 14 kilometers per liter

142. Math

Write the standard form of the quadratic function that has the indicated vertex and whose graph passes through the given point. Vertex: (-2, 5) Point: (0, 9)

143. college alg

find the equation of a line that is perpendicular to line y=1/6x+6 and contains point (-7,0) y=? please show work so i can see how its done

144. math

use each of the digits 3,7,1,5 once to write a number that rounds to the number given

145. physics

Two ants race across a table 63 cm long. One travels at 5.14 cm/s and the other at 3 cm/s. When the first one crosses the finish line, how far behind is the second one? Answer in units of cm

146. History

When did the dark ages occur? How did it start? What happened during those times? How did it end?

147. Math

x^2 + 5x -10= 0 has 2 solutions A and B where A < B and A = ? and B = ?

148. MATH

for the given functions f and g find the following and state the domain of each result f(x)=3x+1/8x-9; g(x)=5x/8x-9 A) (f+g)(x)=? B)domain of (f+g) c) (f/g)(x)=? d) domain of f/g? please show work

149. Math Qs. Check!!!!!!

Jake puts pennies into a jar each morning and lets his brother take haft of the pennies out each morning. Jake put 10 pennies into the empty jar on Monday morning. On Tuesday he put in 15 pennies. One Wednesday he put in 12 pennies. How many pennies are in

150. Math (help)!!!!

Paula looked at a map of her city. The map indicated that 1 Inch represents 3 miles. Paula's home and City Hall 2 1/3 inches apart on the map. What is he distance between her home and City Hall. a) 6 1/2 miles b) 7 miles c) 14 miles d) 5 1/3 miles

151. Math

A circle has the equation x^2+y^2+6x-46=0 graph using (h,k) radius r A) how do i graph this properly B) intercept are?

152. Science

Does the material of the rod affect the period of time taken by a pendulum? if so, how? like maybe, if the mass of the rod is heavier, it will take a shorter time, etc.

153. Math

Solve the equation for x. 30x+10x=40=16x+8

154. Math (help)!!!!

Show two ways of simplifying this expression: 4(25-3)

155. Review Story

Can you please review this summary of the New Kingdom of Egypt I did for Geography? Its just suppose to be a basic summary. I mainly struggle with capitalization and I never know what should and shouldn't be capitalized. Also, is there anyway I could make

156. history

The _______ damanded that Latin American countries keep their financial affairs on order or risk intervention by the United States

157. math

what is 1/30 plus 3/20??????

158. history

The presidential election of 1928 pitted Al Smith of New York against.

159. heath

Resistance exercises improve muscular strength in persons with such conditions as ________. A. Multiple sclerosis and stroke B. Cerebral palsy and spinal cord injuries C. Cognitive disability D. All of the above

160. Math

A baseball is thrown upward from ground level with an initial velocity of 48 feet per second, and its height h in feet is given by , where t is the time in seconds. At what time does the ball reach 10 feet? Round to the nearest tenth. Step by step please

161. Geometry

Find m∠T if m∠T is 20 more than four times its supplement.

162. Physics

Rocket-powered sleds are been used to test the responses of humans to acceleration. Starting from rest, one sled can reach a speed of 424 m/s in 2.35 s and can be brought to a stop again in 2.16 s. Find the acceleration of the sled while accelerating.

163. English

i've got to do research on these questions..grade 9 What does a learner do? What does a communicator do? What does a problem-solver do? What does a community member do?

164. DT

For my DT homework I need to do a health and safety poster on a Pillar Drill. I need to find health and safety facts on a Pillar Drill. Please can you help me. Thanks

165. Algr.2

10(line)2-4a(line)=20 Absolute value How do I solve this equation?

166. MATH!!!!!!!!!!!!!!!!!!!!!

10(line)2-4a(line)=20 Absolute value How do I solve this equation?

167. algebra

-(4h-1)/1+h; h=2 the 4h-1 is on top of 1+h please can someone explain

168. physics

Hello everyone, I need help solving this question: Spiderman is running along the rooftops jumping from building to building. The distance between 2 buildings is 20m. What trajectory would be most efficient for him to jump at? At that angle,what must his

169. math

What is a 72 times 50. My answer is 3,600

170. CJS/240

Will someone please help me find a website to find the answers to the following? Write a 350- to 700-word paper comparing and contrasting the role of the defense counsel with that of the prosecutor. Include an explanation of prosecutorial discretion and

171. Multivariable Calculus

I was asked to state as a product of speed and unit vector a mass traveling at 1000ft/sec along the vector . I know that v/|v| gives me the unit vector, which is (1/2i, sqrt(3)/2j). Do I keep the speed as given?

172. Physics

Heather and Matthew walk eastward with a speed of 0.78 m/s east. If it takes them 29 min to walk to the store, how far have they walked? Answer in units of km

173. Physics

Heather and Matthew walk eastward with a speed of 0.78 m/s east. If it takes them 29 min to walk to the store, how far have they walked? Answer in units of km

What are two major challenges and two major issues facing health care providers today?

175. Math

Pages in a book are numbered in typical fashion, starting with 1. The folio for page 10 will contain the tenth and eleventh digits necessary to paginate the book. On what page will the 2009th digit occur? Please Help!!! I have no idea where to begin

176. insurance

As a rule of thumb, experts say that most married people should carry ______ times their net pay in life insurance coverage

177. science

the mass of a shot an Olympic shot putter throws should be measured in what

178. organic chemistry

How is overall molecular polarity affected by molecular symmetry (specifically shown for alkenes in book)? And what are the consequences for melting and boiling points (in cases of high molecular symmetry versus low molecular symmetry)?

179. organic chemisrtry

What must a molecule possess to be able to absorb radiation in the infra-red region?

180. Algebra

If the principal P=\$600, the interest I=210.00, and the T= 5 Years. What is the rate?

181. Chemistry/Math

I went to my teacher numerous times. I'm still not using the right formulas or equations. Please help. A commonly used rule of thumb is that average velocity in a pipe should be about 1 m/s or less for "thin" (viscosity about water). If a pipe needs to

182. health

what is major depressive disorder?

3-x=12(x-1)

185. Math

What are two ways to read x/16?

186. Math

12x-7=8+3x+12

187. History

DESCRIBE THE BENFITS FOR THE DEVISION OF LABOR?

188. math

If JK=9x+11 and NO=28, what is the value of x

189. geology

determine the Radiocargon age of the sample from its % Modern value. Fragment of Roman Gladiator leather harness 77% modern ___ radiocarbon age BP ____ correct radiocarboned age

190. math

I tried solving these problems and get stuck . Can you please tell me what am I suppose to do next or did I do them all wrong 1. (x+5)^2 = (x+4)^2 √(x+5)^2 = √(x+4)^2 x+5 = x+4 ? 2. (4x+7)^2 = 144 √(4x+7)^2 = √144 4x+7 = 12 ? 3. (x-5)^2 = 30

191. math

Mr burr the head custodian is working on putting new numbers on 42 of the 81 classroom doors. He found two numbers for the 23rd door he was working on in the 6th grade hallway whose sum is 35 and their product is 306. What are the two numbers?

192. civics

What three rivers meet together and form the largest waterway??

193. AP Chemistry

For the reaction ? C6H6 + ? O2 ↽⇀? CO2 + ? H2O a maximum of ? moles of CO2 could be formed from 6.38 mol of C6H6 and 6.03 mol of O2. Answer in units of mol

194. Math

Convert 60,000 BTU/hr to in.cubic feet/minute.

195. science

How would you find the thickness of a peice of gold foil.

196. Calculus

explain why f(x)=(1)/(x^2-9) is discontinoues at x=-3

197. calc

Suppose that f(x) = 1/x. Find a simplified expression for f(x)-f(a)/x-a

198. Chemistry

Predict whether the following pairs of solute and solvent will result in a solution that completely dissolves. 1. Sodium chloride and water 2. Sodium benzoate and water 3. Sodium benzoate and 1M HCl 4. Benzoic acid and 1M NaOH

199. Math

Pages in a book are numbered in typical fashion, starting with 1. The folio for page 10 will contain the tenth and eleventh digits necessary to paginate the book. On what page will the 2009th digit occur? Please Help!!! I have no idea where to begin

200. math

if my input is 1,2,3,and 4 and my output is 5,10,15,and 20 what would my rule be?

201. math

show why 4.25/0.7 is the same as 42.5/7

202. math

show why 7.32(times)0.8 has the same number of digits behind the decimal in the answer as it has in the problem.

203. algebra

I know how to do these equations but can't figure these out (x+3)/5=(x-2)/4 2x squared + 14x =0

204. math

Solve the equation for x 30x+10x-40=16x+8

205. math

how can you help a student understand that decimal numbers are fractions?

206. Math

Find the intercepts and use them to graph the equation. y=x-6 A)what are the intercepts B) how do I graph this?

207. arithmetic

lim x->0 (e^x^2 - 1)/(square root(1+sinx)- square root(cosx))

208. math

make 2783/1000 a decimal

209. humanities

who are the people involved in dark ages?

210. math

make 0.237 a fraction

211. Math

Let p(x)=x^3+4x^2+x-6. Find a polynomial g(x) can be (remainder) r, such that p(x) can be expressed in the form p(x)=(x-2)g(x)+r

212. math

make 24/9 a decimal

213. math

i am a three digit number.if you subtract 419 from me the remainder is 126.what number am i?

214. math

there are 45 children in a class.if there are 3 more girls than boys,how many are girls?

215. math

Evaluate f(x) = x^2+3-4 For f(1/4)

216. math

Let s(t) represent the position of a particle at time t, v(t) is the velocity and a(t) is the acceleration. What is the value of v(9) for the following: Given that the acceleration of the particle at time t is a(t) = -3t^2+ 3t + 10 and that its position

217. Math

Find the exact value of sin 2teta=2 sin teta cos teta given that cos teta =2/3, 0

218. math

Factor each of the following expressions X^2+2x+y^2 5x^2-16x+3 (X+y)^2-64 Ax+bx-ay-by

219. Math

Find the exact value of the product sec teta csc teta given that sin teta=3/5 and cos teta =4/5

220. History

What happened during the European dark ages?

221. math

What is the domain and range for each function F(x)=x^2-6x-10 Y=3sinx G(x)=10^x

222. Math

The four relations are reprinted below: A) y= -2x+34 B) y= -x/3-10 C) y= - (absoulute value of 3x) D) y= (x-2)squared What order will result in a final output of 2 when the first input is 8?

223. History

How did the Dark Ages end?

224. Chemistry

When secondary alcohol oxidized it produces alkanes. Draw the structure of 2,2 dimethyl 3-butanol + oxygen and give the names for it.

225. Math

1/x+1-1/+2=1/6

226. Math HW Check

Which number is equivalent to the expression below? -9 / -3 + 4 x -2 e) 18 f) -5 g) -14 h) -11 -9 / -3 + 4 x -2 -3 + 4 x 2 - 5 I got -5 am I correct????

227. Quantitative Chemical Analysis

Hg has an AW of 200.59 g/mol and HgS has a MW of 232.66 g/mol. Compute the gram of Hg needed to prepare 20 g of standard containing 1% Hg(wt/wt) Then compute the gram of HgS needed to prepare 20 g of standard containing this same 1% (wt/wt).

228. Math

Find all real solutions of equation 2x^2+1-4=0 Does the equation have real solutions? Yes or No? If yes, x1= and x2= with x1 (less than or equal to) x2

229. Humanities, social studies

what did the burgundians look like? how did they dress? what culture did they have? what activities did they do in their culture?

230. humanities

what are the causes of dark ages?

231. math

solve 2x-y=11 and x+y=13 using the elimination method

3x+4x

233. Math

1. x/4 + 11 = -25 2. x/4 - 5 = 13 3. x/4 = 13

234. math

7 digit number have 8 in the thousands place.

what is 13/16 minus 1/4?

236. physics

A viking sails from his home port and travels east at 15km/hr.after 10 hours, the wind change and he is blown south west at 20km/hr for six hours.at his point wind drops, the ship is becalmed and doesnot move for the next ten hours.becoming tired of

237. Humanities, social studies

Can someone please give me links or answer these questions: What Culture did the Burgundians have? if so, what did they do (culturally) How did the Burgundians Are they a democracy, monarchy, etc.? How did they make money (politically and economically) I

238. math

Evaluate f(x)=x^2+3x-4 F (1/4)

239. chemistry

What is the rate of reaction when N2O5 equal 2.60×10^-2?

240. spanish

what is the spanish word for "see you soon"

241. english

How is the theme death portrayed in the poisonwood bible and a prayer for Owen meany?

242. Math

There's a bowl full of candy bars. Mike takes1/3 of the candy bars but returns 4. John then takes 1/4 of what was left but returns 3 , and Henry took 1/2 of the remainder but returned 2. The bowl had 17 candy bars left. How many candy bars were originally

243. math

The sum of two consecutive numbers is 37. What are they?

244. algebra

8 + 5(4*2) – 30

245. math

Find the x-intercept and y-intercept for y=-5+1

246. biology

what units are typically used to measure volume?

247. Physics

A car traveling in a straight line has a velocity of 2.36 m/s at some instant. After 3.09 s, its velocity is 9.33 m/s. What is its average acceleration in this time interval? Answer in units of m/s2

248. Physics

Heather and Matthew walk eastward with a speed of 0.94 m/s east. If it takes them 57 min to walk to the store, how far have they walked? Answer in units of km

249. math

Find the monthly payment for a loan of \$31,000 at 7% for 7 years

250. Math

The measure of an angle's supplement is 44 less than the measure of the angle. Find the measure of the angle and it's supplement.

251. Physics

How much work does the electric field do in moving a 2 μC charge from a point with a potential of +20 V to a point with a potential of −20 V?

252. math

what is [x]=x

253. Algebra

Simplifying y^2 + 3 + 3(y^2+1) My answer is 4y^2+6 but the program I am using (Hawkes learning system) says it isnt correct. Any help would be greatly appreciated. I have even used several online calculators to verify and this is the answer they all come

254. social studies

what are the symbols of the six regions of kentucky?

255. Math

Which number has the greatest value 1. 86,543,712 2. 82,691,111 3.85,381,211 4.86,239,121

256. Math/Algebra

y^2+6+2(y^2+5) My answer is 3y^2+16 (simplifying) but the hawkes learning system won't accept this answer. Am I missing something?

257. algebra

[-4b-8]+[-1-b^2]+2b^3; b=-2 please can someone explain

259. computer

pros and cons of traditional economy

260. Physics

Heather and Matthew walk eastward with a speed of 0.78 m/s east. If it takes them 29 min to walk to the store, how far have they walked? Answer in units of km

261. Algebra

The equation is 5= -z - 3 Why is the answer -8 and not just positive 8? Please explain the whole negative variable thing.

262. history

During the election of1936, declaring their party a "millionair's union," Franklin Roosevelt focused maimly on defending the

263. science

Find the horizontal and vertical components of the velocity of a cannonball 4 seconds after being fired horizontally at 400 m/s from the edge of a tall cliff.

264. Physics

vertically up at 28m/sec, gravity 9.8 meters/sec^2 = what is max. height

265. physics

An elevator is moving upward at 1.00 m/s when it experiences an acceleration 0.28 m/s2 downward, over a distance of 0.74 m. What will its final velocity be?

266. math

a patient has 8.5ml of blood drwan for testing. Convert this measurement into inches cube

267. Science

Could someone help me list 15 thing that are not matter? Thanks

268. Algebra I

1/2(1/2m-4) Use the distributive property to write an equivalent expression. Please explain the steps as well. Thank you. :D

269. physics

In the problem, please assume the free-fall acceleration g = 9.80 m/s2 unless a more precise value is given in the problem statement. Ignore air resistance. A stone is thrown vertically downward from the roof of a building. It passes a window 15.0 m below

270. Science

If on earth you weigh 420 newtons, and the gravitational pull on the moon is 1/6 of what it is on earth. What would be your weight on the moon?? Please show work Thanks!! :)