# Questions Asked onOctober 10, 2013

Which of the following statements about radioactive dating is true? a. Radioactive decay is the rate at which new atoms form. b. During radioactive decay, atoms break down, releasing particles or energy. c. The rate of decay of a radioactive element cannot

2. ## Physics

You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. The soccer ball is kicked at 41° from the edge of the building with an initial velocity of 21 m/s and lands 59 meters away from the wall. How

3. ## Chemistry

Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years. A rock is found to contain 82.7% of the amount of

4. ## consumer math

Alisha has a five-year car loan of \$15,000 with an interest rate of 6 percent. If the interest is compounded annually, how much will she pay in total for her car?

5. ## Inequalities (Math)

Sari has to read a book for English class by the end of the week. She wants to read at least 200 pages in the first 5 days of the week. On average, how many pages should Sari read per day to meet her goal? (1point) I think it's p

6. ## Chemistry

Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n = 6 to n = 1.

1. 2n > 14 Answer: n > 7? 2. (n/5)≥ 11 Answer: n ≥ 55 3. -3y ≤ -18 Answer: y ≥ 6

8. ## Algebra 9R (NYS) - HELP!!!!

A hotel charges \$20 for the use of its dining room plus \$2.50 for each lunch. An association is using the hotel for a meeting and charges its members \$3 per person to attend. Four non-paying members are invited as honorees. How many paying members must

9. ## Math

A poster is 3 times a long as it is wide. A banner is 5 times as long as it is wide. Both the banner and the poster have perimeters of 24 inches. What are the length and width of the poster and the banner

10. ## CHEMISTRY

1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air is 20.9% oxygen by volume, a. how many liters of air are needed for

11. ## biology

Which of the following statements is true? 1.Both unicellular and multicellular organisms are at risk of having too much water entering their cells if they are exposed to water containing no salts. 2.Only multicellular organisms have structures that enable

12. ## science

What could the relative age of two rocks tell you about them? a. One rock is 10,000 years old, and the other is 8,000 years old. b. One rock is older than the other. c. They both have fossils in them. d. One rock is closer to the surface than the other.

13. ## AP physics c

A helicopter lifts a 63 kg astronaut 10 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. (a) How much work is done on the astronaut by the force from the helicopter? Incorrect: Your answer is incorrect. J (b) How

14. ## Chemistry

1)Buttermilk has 9 grams of protein and 12 grams of carbohydrate per cup (237ml). Estimate the concentration in mol/L of protein using the fact that the average protein is 300 amino acids long and the average amino acid has a mass of 110 amu. 2)Lactose

15. ## science

Calculate the weight of a person with a mass of 67 kg that is holding a 12 kg box on earth

16. ## Math

Salem and Eugene,Oregon, are 64 miles apart.If the distance on the map is 3 1/4 inches, find the scale of the map.

17. ## Geography (Ms. Sue)

1). What were some of the objects traded or transported over the Silk Road? A: Some of the objects traded of transported included silk, gold, silver, ivory, jade, wine, spices, amber, linen, porcelain, grapes, perfumes, ostriches, and acrobats. 2). Why

18. ## physic

Draw the vector C⃗ =0.5A⃗ +2B⃗ .

19. ## Calculus

A cup of hot chocolate has temperature 80 C in a room kept at 20 C.? After a half hour the hot chocolate cools to 60 C. a) what is the temperature of the hot chocolate after another half hour? b) when will the chocolate have cooled to 40 C? I think I know

20. ## english

Which of the following best exemplifies Updike's own life experience as it is reflected in his short story "Son"?

21. ## physics

Suzie (of mass 76 kg) is roller-blading down the sidewalk going 12 miles per hour. She notices a group of workers down the walkway who have unexpectedly blocked her path, and she makes a quick stop in 1.9 seconds. What is Suzie’s average acceleration

22. ## chemistry

Calculate the molarity (M) of a solution of the strong base RbOH if the hydroxide ion concentration is 0.000309 M.

23. ## Geography (Ms. Sue)

What is the second largest ethnic group in Central Asia? A: The second largest ethnic group in Central Asia is Russian. However, the second largest ethnic group is also Kazakh?

24. ## Chemistry

The following questions concern the iconic Nestle Toll House Chocolate Chip Cookie recipe, shown below: 2 1/4 cups all-purpose flour 1 teaspoon baking soda 1 teaspoon salt 1 cup butter or margarine, softened 3/4 cup granulated sugar 3/4 cup packed brown

25. ## Chemistry

The elements of which group in the periodic table release the most energy by gaining an electron? The elements of which group in the periodic table absorb the most energy when gaining an electron?

26. ## CHEMISTRY........

i TRIED TO DO IT, BUT MY ANSWERES ARE WRONG. Please show work and explain. 1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air

27. ## Chemistry

A metal foil has a threshold frequency of 5.45× 1014 Hz. Which of the colors of visible light have enough energy to eject electrons from this metal.

28. ## Physics

A ball rolling down a hill was displaced at 19.6m while uniformly accelerating from rest. If the final velocity was 5.00 m/s what was the rate of acceptation?

29. ## Math

Solve the literal equation for a y=x(ab/a-b)

30. ## Environmental Science

On Earth in the extreme northern and southern latitudes, how does the relationship between GPP and NPP change during an entire year’s time?

31. ## ALGEBRA 1

A nonstop bus ride from the bus station in Atlantic City, New Jersey, to the bus station in Albany, New York, took 6 hours. If the average speeed of the bus was 21 meters per second , what is the distance between the two bus stations, to the nearest

32. ## Physics

A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 20.0 m. She pushes in a direction 28.0° below the horizontal. A 54.0-N frictional force opposes the motion of the cart.

33. ## algebra

If Employee A logged 120 hours of travel in four years and Employee B logged hours of travel at a 20% higher rate, how many more hours did Employee B have than Employee A after 1.5 years?

34. ## FEEDBACK CONTROL SYSTEM

Figure below shows the block diagram of a dc-motor control system (note the dc-motor is represented by G(s)= K(s+3)/s(s+1)(s+2).The signal N(s) denotes the frictional torque at the motor shaft. a) Find the transfer function H(s) so that the output Y(s) is

35. ## Physics

An block of mass , starting from rest, slides down an inclined plane of length and angle with respect to the horizontal. The coefficient of kinetic friction between the block and the inclined surface is . At the bottom of the incline, the block slides

36. ## Chemistry

The following questions concern the iconic Nestle Toll House Chocolate Chip Cookie recipe, shown below: 2 1/4 cups all-purpose flour 1 teaspoon baking soda 1 teaspoon salt 1 cup butter or margarine, softened 3/4 cup granulated sugar 3/4 cup packed brown

37. ## Chemistry

Please help and explain each problem. PLEASE!!!! 1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air is 20.9% oxygen by volume,

38. ## Geography (Ms. Sue)

1). How can the geographic definition of a body of water affect economic relationships? A: The geographic definition of a body of water can affect economic relationships as it can cause allied countries to try to better only themselves. For example, if the

39. ## Physics

Consider two blocks that are resting one on top of the other. The lower block has mass m2 = 3.5 kg and is resting on a frictionless table. The upper block has mass m1 = 2.7 kg. Suppose the coefficient of static friction between the two blocks is given by

A ball rolling down a hill was displaced at 19.6m while uniformly accelerating from rest. If the final velocity was 5.00 m/s what was the rate of acceptation?

41. ## math

Mary is baking cookies for her school bake sale. For every 5 chocolate chip cookies she makes 2 oatmeal raisin cookies. If she keeps this ratio, and bakes 84 cookies total, what will be the ratio of chocolate chip cookies to oatmeal raisin cookies?

42. ## Teacher Aide

A diagnosis of mental retardation means that a child a. can't read or write at a function level b. needs serious learning support in mental ability and behavior c. has a mental age equal to his or her chronological age. d. can never functional in normal

43. ## Chemistry

What would be the speed of the following particles if they had the same wavelength as a photon of green light (λ = 500.0 nm)? Proton (mass = 1.673*10^(-24)g) =_____ neutron (mass = 1.675*10(-24)g) =_____ electron (mass = 9.109*10^(-28)g) =_____ alpha

44. ## chemistry

Calculate the equilibrium constant for the weak base C5H5N, if a solution of the base with an initial concentration of 5.74×10-3 M has a [C5H5NH+] of 0.00000283 M (make an approximate calculation assuming that initial concentration is equal to the

45. ## Organic cChemistry

For each pair of molecules or ions, select the stronger base and write its lewis structure a) CH3S- or CH3O- b) CH3NH- or CH3O- c) CH3COO- or OH- d) CH3CH2O- or H- e) NH3 or OH- I would really appreciate the help!

46. ## chemistry

In my organic lab, we synthesized synthetic banana oil. I'm asked what gas escaped during the sodium bicarbonate washing and to write two reactions that took place during that operation. I know carbon dioxide escaped but I don't know how to write out the

47. ## number theory, math

How many ordered pairs of positive integers (a,b) are there such that (4a-1)/b and (4b-1)/a are both integers?

48. ## Math

Explain how you know whether an estimate of a product is an overestimate or an underestimate?

49. ## chemistry

Calculate the [CH3CO2H] in a solution if it has a pH 3.21. CH3CO2H = CH3CO2- + H+

50. ## Chemistry

Which nutrient is most abundant (by weight) in eggplants? Carbohydrates Fats Proteins Add up the total mass of carbohydrates, fats, and proteins in a serving of eggplant. What fraction of the eggplant's weight is made up of these ingredients? Which of the

51. ## Physics

High-speed motion pictures (3500frames/second) of a jumping 280ìg flea yielded the data to plot the flea's acceleration as a function of time as shown in the figure (Figure 1). This flea was about 2 mm long and jumped at a nearly vertical takeoff angle.

(1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventh-grade science, I have some experience with the faces

53. ## Calculus

The linear approximation to (1/sqrt(9-x)) at x=0. What is y?

54. ## Brief Calculus

The position s of a point (in feet) is given as a function of time t (in seconds). s = −10 + t − 15t2;  t = 8 (a) Find the point's acceleration as a function of t. s''(t)= I know this answer, it is -30 (b) Find the point's acceleration at the

55. ## maths

a flagpole cast a shadow 18m long when the altitude of the sun is 54 degrees.what is the height of the flagpole

56. ## Math

In golf, the average score a food player should be able to achieve is called a par. par for a whole course is calculatedby adding up the par scores for each whole. Scores in golf are often expressed at some number either greater than or less than par. ms.

57. ## Physics

We release an oil drop of radius r in air. The density of the oil is 640 kg/m . c_1 and c_2 for 1 atmosphere air at 20 C are 2.20* 10 ^-4 (kg/m)/sec and 0.81 kg/m , respectively. How small should the oil drop be so that the drag force is dominated by the

58. ## physics

Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a

59. ## math

This year the Sum of Mr. Bellinis age and his son's age his son's age is 38 years. 4 years ago, Mr. Bellini was 5 times as old as his son. How old is his son this year? How old is Mr. Bellini this year?

Below is the last stanza of a poem, "Dover Beach," written in 1876 by Matthew Arnold. Ah, love, let us be true To one another! For the world, which seems To lie before us like a land of dreams, So various, so beautiful, so new, Hath really neither joy, nor

61. ## Calculus

The radius of a circular disk is given as 24 cm with a maximal error in measurement of .2 cm. What is the percentage error?

62. ## statistics

5. Find the weighted mean of the following two samples. Sample 1: n = 5 and the mean = 20 Sample 2: n = 15 and the mean = 10.

63. ## Science

A researcher designs an experiment to determine if German Shepherds prefer pet doors that opens from the side or from the top. He installs two pet doors side-by-side in the same wall. The pet door that opens from the top is designed for pets up to 15

64. ## Algebra 1

For \$46, Joel can rent a machine to make novelty buttons to sell at the county fair. The materials cost \$0.39 per button. How many buttons must he sell at \$1.40 each in order to make a profit. Identify the graph that shows all the possible answers. A: 45,

65. ## Physics

An archer is preparing to shoot an arrow. He grabs the center of the bowstring and pulls straight back with a force of magnitude F = 173 N. The upper and lower halves of the string form an angle α = 104∘ with respect to each other. Assume that the

66. ## Calculus 1

Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing

67. ## English

1. I went on a school field trip to Jeju Island. 2. I went on a school trip to Jeju Island. 3. I went on a study trip to Jeju Island. 4. I went on a study tour to Jeju Island. 5. I went on a study travel to Jeju Island. 6. I went on a field trip to Jeju

68. ## math 5th

in the following addition problem, each letter stands for a different digit. Find the value of X, Y, and Z XYZ + ZYX _______ YYZY

69. ## Algebra 1

A cyclist can travel 29.6 miles in 2 hours. At this rate how many gallons will it need to travel 650 miles. A: 14.8 B: 22.2 C: 11.1 D: 16.2

70. ## Chemistry

How many moles of K2O are present in 40.0 mL of a 0.3 M K2O solution? I also need the formula, data, and answer.

71. ## Chemistry

How many joules (J) are needed to increase the temperature of 43.0g of aluminum from 25 degrees celcius to 50 degrees celcius? (Cp of Al=0.90J/g degrees of celcius) I also need the formula, data, and answer.

72. ## Physics

Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a

73. ## chemistry

Calculate the pH of a 3.00×10-4 M solution of the strong acid HClO4. Round your answer to 3 significant digits.

74. ## chemistry

Estimate the equilibrium constant for the weak acid HCO2H, if a 2.19×10-3 M aqueous solution of HCO2H has a pH 3.21 (make an approximate calculation assuming that initial concentration is equal to the equilibrium concentration). HCO2H = HCO2- + H+

75. ## Physics

A block of mass m1 = 27 kg rests on a wedge of angle θ = 54∘ which is itself attached to a table (the wedge does not move in this problem). An inextensible string is attached to m1, passes over a frictionless pulley at the top of the wedge, and is then

76. ## Calculus 1

Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing

77. ## Calculus 1

Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing

78. ## Physics

From the window of a building, a ball is tossed from a height y 0 above the ground with an initial velocity of 10.00 m/s and angle of 25.0° below the horizontal. It strikes the ground 3.60 s later. If the base of the building is taken to be the origin of

79. ## Math

Make up a data set of at least 12 numbers that have the following landmarks Maximum 18 Mode 7 Range 13 Median 12 Make a bar graph of the data

80. ## math

the expression 10x^2+6x^3 is the result of applying the distributive property to the expression 2x^2(5+3x). write the expression such that you applied the distributive to your expression it will give the result presented 1) m^2(a+b)+m^3(a+b) for this I got

81. ## college statistics

2. A researcher has developed a new questionnaire for measuring dominance and would like to estimate the population parameters for the test scores. The questionnaire is administered to a sample of n = 25 subjects. This sample has an average score of mean =

82. ## Number Theory.,Math

How many ordered pairs of positive integers (a,b) are there such that (4a-1)/b and (4b-1)/a are both integers?

83. ## Chemistry

Calculate the number of atoms in 46.0 grams of Calcium 9(Ca)

84. ## psychology

The brain can be studied using: A. electrical, biochemical and magnetic means. B. radio frequencies, computers, and neurotransmission. C. neurotransmitting, electrical, and biochemical means D. biochemical, neurotransmitting, and magnetic means. I think

85. ## math

When dividing 0.08 by 0.4 I come up with 5, but I need to show it in a graph. I can't figure out how to do this

86. ## social studies

Please with the following: **Different between government and governance **What is meant by policy **wha is the paramount purpose of public administration Thanks!

87. ## physics

Object A is moving due east, while object B is moving due north. They collide and stick together in a completely inelastic collision. Momentum is conserved. Object A has a mass of mA = 17.5 kg and an initial velocity of = 8.50 m/s, due east. Object B,

89. ## chemistry

Calculate the molarity (M) of a solution of the strong acid H2SO4 if the hydrogen ion concentration is 0.000244 M.

90. ## chemistry

Calculate the [OCl-] of a 7.03×10-2 M solution of the weak acid HClO (make an approximate calculation assuming that initial concentration is equal to the equilibrium concentration). Round your answer to 3 significant digits. HClO = OCl- + H+

91. ## chemistry

Calculate the pH of a 5.75×10-2 M solution of the weak acid HCN (make an approximate calculation assuming that initial concentration is equal to the equilibrium concentration). Round your answer to 3 significant digits. HCN = CN- + H+

92. ## Chemistry

I have a few question for my review. 1) How would you prepare 30.0 ml of 0.600M HNO3 From a stock solution of 4.00M HNO3? What volume in ML of the 4.00 M HNo3 will you need? 2) if a 83.5 & was repoarted for a reaction that could have produced 12.1 g of

93. ## Physics

A conical pendulum is constructed from a rope of length l and negligible mass, which is suspended from a fixed pivot attached to the ceiling. A small ball of mass m is attached to the lower end of the rope. The ball moves in a circle with constant speed in

94. ## Geometry

Simplify (6t to the fifth power) with whole expression in parenthesis to the 2nd pwr.

95. ## Calculus 1

Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing

96. ## Chemistry

when a boiling point is 120 digrees C, and melting point is -12, what is its agregate condition in 0 digrees?

97. ## math-venn diagram

In a survey of a TriDelt chapter with 50 members, 18 were taking mathematics, 37 were taking English, and 7 were taking both. How many were not taking either of these subjects?

98. ## Math Word Problem

During the summer throughout high school and for a year after, Lewis worked as a lifeguard at the beach. In that 5-year period, he saw a total of 461 dolphins swimming in the distance. About how many did Lewis spot per summer in the 5 summers he worked?

99. ## Physics

At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F = -c_1*r*v , where c_1 is a constant. At time t = 0, a small ball of mass is projected into a liquid so that it initially

100. ## statistics

Find the operating characteristics of this system. An airport ticket counter has a service rate of 180 per hour, exponentially distributed, with Poisson arrivals at the rate of 120 per hour

Use Compatible Numbers. 5,172/74= 1,891/32= 6,301/81= 5,232/5= 366/6= 19,008/64= 2,622/67= 461/91= 7,952/42= 2,759/30=

102. ## math

Space the length of one day on venus is 35 earthdays write a product and an exponent .

103. ## Intro to ethics 120

he outlawing of slavery and extending voting rights to women seem to indicate that ethics can have beneficial results. Give an example from the past that indicates a similar result or a current social policy that might be regarded as wrong, which therefore

104. ## math

A Pythagorean triple is an ordered triple of positive integers(a,b,c) such that a^2+B^2=c^2.Find the number of the Pythagorean triples such that all the numbers a,b and c are prime?

105. ## Language Arts

2) Which of the following sentences is punctuated correctly? (1point) Since Maria is away in Spain, Mom said I may have her ticket to the concert.*** Since Maria is away in Spain, Mom said, I may have her ticket to the concert. Since, Maria is away in

106. ## Biology

You wish to produce a human enzyme, protein A, by introducing its gene into bacteria. The genetically engineered bacteria make large amounts of protein A, but it is in the form of an insoluble aggregate with no enzymatic activity. Which of the following

107. ## math

an online printing studio charges \$.25 per photo and an additional \$3.50 for shipping per photo. At how many photos (round to nearest whole number) is the cost exactly the same no matter which method is used? How does this problem apply to the concept of

108. ## poetry

I have to choose a poem to analyze and it has to be classroom appropriate. I was wondering is the poem "The Sick Rose" by William Blake appropriate for a grade 12 classroom? Thanks (posted the poem below) O Rose thou art sick. The invisible worm, That

109. ## algebra

Multiply -8(6x^2-4x+1)

110. ## algebra

subtract (5a^3+a-7)-(8-7a^3-2a^2)

111. ## Geography (Ms. Sue)

What are the harmful effects of nuclear testing? A: Nuclear testing causes widespread health problems. Such conditions include dangerous levels of radiation exposure which causes dramatic increases in the rates of leukemia, thyroid cancer, birth defects,

112. ## accouing

When sales are constant, but the production level fluctuates, net operating income determined by the variable costing method will:

113. ## Math

16. Alison uses a total of 94.5 cups of dog food each week to feed her three dogs. Each dog eats the same amount. How much does each dog eat in one day? 19. | x - 2 | = 2 Choose from -4, -3, -2, -1, 0, 1, 2, 3, 4. Find all of the numbers that are solutions

114. ## Math - Trig

The equation y = 20sin(0.5θ - 2) + 40 models the monthly temp for a certain city. Use the equation to predict the temperature in the city during December. Thanks

115. ## chemistry

Estimate the initial [C6H5CO2H] in an aqueous solution in which the [C6H5CO2-] is 0.000172 M at equilibrium (make an approximate calculation assuming that initial concentration is equal to the equilibrium concentration). C6H5CO2H = C6H5CO2- + H+

116. ## algebra

Evaluate the polynomial for x=3 and x=-3 the value of -6x+8= - when x is -3 the value of 6x+8= - when x is 3

117. ## Physics

A bullet of mass 10.6 grams is fired with a speed of 125 meters per second toward a wood block of mass 187 grams initially at rest on a very smooth (assume frictionless) surface. What is the change in momentum of the bullet if it becomes embedded in the

118. ## math

Perform the given set operation. Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. (Enter your answers as a comma-separated list. Enter EMPTY for the empty set.) {x | x is a multiple of 2} ∪ {x is a multiple of 7}

119. ## Physics

I need to explain and demonstrate mathematically why it is easier to pull a wheelbarrow than it is to push it. Also, what effect does the component of force parallel to a bicycle crank have?

120. ## Math Reasonableness

Luciel has 365 cookies to sell. She wants to store them in plastic bags that hole 12 cookies each. she estimates she will need 30 bags.Is he right? Why or why not?

121. ## Math

Aaron has two types do iodine in his lab. He has brand 213 iodine, which costs 36 cents per ounce. He also has brand 856 iodine, which costs 1.58\$ per ounce. How many ounces of brand 213 should be used if he has 63 ounces of brand 856 and wants to make a

122. ## Math Explanation

Carl needs to estimate the quotient 547/92=. Explain how Carl could use compatible numbers to make a reasonable estimate.

123. ## Algebra 2

In triangle FGH, the measure of angle G is three times that of angle F. The measure of angle H is 20 degrees more that that of angle F. Find the angle measures

124. ## English

What is the best way to correct the misplaced modifier in the sentence below? In the bag, the dog poked around looking for the last morsel of food. a. The dog poked around looking for the last morsel of food in the bag. b. Looking for the last morsel of

125. ## English

The determined threesome hiked higher and higher up the mountains, battling frostbite, dehydration, frigid temperatures, and fierce winds. They traveled over the icy ground in silence, sometimes 14 hours a day, and were often too tired to even stop and

126. ## life sciences

explain how a species may display 'herd' or 'flock' behaviour as a survival strategy?

127. ## physics

There is a 2kg block resting on a table with a 5kg block attached to the right hanging off the edge of the table and a 4 kg block attached to the left also hanging off the table find the acceleration of the 5 kg block if coefficient of static equals the

128. ## statistics

2. A researcher has developed a new questionnaire for measuring dominance and would like to estimate the population parameters for the test scores. The questionnaire is administered to a sample of n = 25 subjects. This sample has an average score of mean =

129. ## college statistics

7. Mary goes into the supermarket. The probability that she buys (a) regular coffee is .30, (b) decaffeinated coffee is .40, and (c) that she buys both is .30. What is the probability that she buys regular coffee, decaffeinated coffee, or both?

130. ## biology help plz?????????????????

Please tell me which one is TRUE or FALSE for the statements below: 1. During the cardiac cycle the pressure in the left ventricle and right ventricle are approximately equal. 2. During isovolumetric contraction the left ventricular pressure continues to

131. ## English

Which of the following words is an antonym for scorned? a. disliked b. ignore c. acknowledge d. approve of C Which sentence includes an adverbial phrase? a. The weight of an American Mastiff can be up to 160 pounds. b. Xun lives in the mountainous region

132. ## Calculus

Determine if Rolle's Theorem can be applied. If it can, find all values of c such that f'(c)=0. f(x)=x^3-9x, [-3,3]

133. ## languge art

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it

135. ## algebra

(-1/2y^2)(3/5y^8)

136. ## math

what are some arrays that add up to 24 are at least 2 high but no taller than 8 high?

137. ## Math

This year, the sum of Mr. Bellini's age and his son's age is 38 years. 4 years ago, Mr. Bellini was 5 times as old as his son. How old is his son this year? How old is Mr. Bellini this year?

138. ## Physics

how to find the max height of a cat that is thrown at 9.8 m/s and is in the air for a total of 4 seconds.

139. ## History

Ok, I'm supposed to write an outline of a bibliography on Sarah Bache, is their anyone who might have links that could help maybe?

140. ## math

perform this operation: Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. ________ {2,7,10}

141. ## Math

When a number is written in expended from the exponents, each place is represent by a power of ____________.

142. ## Math

A ___________ is a number with one or more digits to the right of the decimal point.

143. ## Finance

a source of tax-income is

144. ## algebra

collect like terms 8x^2+6x^4-2x^2-x^4-6x^2

145. ## Chemistry

Identify the major macronutrient by weight in each of the following key ingredients. Olive oil Carbohydrates Fats Proteins Buttermilk/milk Carbohydrates Fats Proteins Neither Distilled vinegar Carbohydrates Fats Proteins Plain Greek yogurt Carbohydrates

146. ## pure maths, life science, physical science, geogra

what can you study with those subjects

147. ## science

How did the water from the stream source change the land

148. ## Physics

A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k

149. ## Physics

a rubber ball is thrown downwards off a balcony. after it travels 55m it has a speed of 46.5m/s. what is the initial velocity

150. ## Calculus

How can you tell where on a graph f is discontinuous? What are the criteria?

151. ## math

Let U = {7, 8, 9, 10, 11, 12, 13}, A = {7, 8, 9, 10}, B = {7, 8, 11, 12}, and C = {9, 11, 13}. List all the members of the given set. - A ∪ (B ∩ C)

152. ## math

Even counting numbers less than 18

153. ## Math

It usually takes Amalie 1 3/4 hours to get to her aunt's house. Due to Thanksgiving traffic, this year it took 3 1/3 hours. How much longer did it take this year?

154. ## maths

When a die is thrown,what is the probability that the number is greater than 1,given that it is odd?

155. ## calculus

Find the definate integal (upper limit 1, lower limit 0) (2x^2-4x-6)dx

156. ## calculus

Find the definate integal (upper limit 1, lower limit 0) (7-4x)^2dx

I'm having difficulties writing a lead for my speech. My speech story will be on the Portage City Council and mayor candidates regarding the city's challenges over the next two years. All their answers were different. My lead was going to simply be:

158. ## Math

-3/4-1/2 I get -1/4 but my dad is saying -1 1/4. Can you please help with the answer and explain how you came up with it? Thank you

159. ## English

The significance of the birds red feathers which is the prominent color of doodle's blood when he was found under the red nightshade bush. Help me reword this sentence it doesnt make sense...

160. ## English

Argue a case for either the usage of hyperbole or understatement. Which do you think is more effective? More humorous? Explain your opinions, citing examples from the texts. Explain what this means and give an example...

161. ## Math Question

What does "c ≠ 0" mean? I've heard the "≠" sign means "does not equal." Does this mean that c ≠ 0 means that "(variable) does not equal zero"? What is it's usage?

Ms Sue.. this is just a synopsis of what the candidates said Ansari said the biggest challenge is balancing the costs of services with revenue shortfalls, Farrell said finding ways to do more with less and saving on costs, Ford said reduction of revenue

163. ## statistics

6. Out of eight numbers, what is the probability of drawing a two on the first draw and a three on the second draw using sampling with replacement?

165. ## Math

In the number 3,207,409 the 4 has a value of 400. The value of a digit in a number is called its___________ value.

166. ## Algebra

(y^3-y^2-5y-5)/(y+1) can someone help me solve this?

167. ## Math

What is the equation for an input of 0,1,2,3,4 and output of 1,4,9,16,25

168. ## Calculus 1

Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing

169. ## Physics

A projectile is fired off a 35m cliff at 18m/s. what horizontal distance does the projectile travel before hitting the ground?

170. ## Physics

I need to explain and demonstrate mathematically why it is easier to pull a wheelbarrow than it is to push it. Also, what effect does the component of force parallel to a bicycle crank have?

171. ## biology help?

Please tell me which one is TRUE or FALSE for the statements below: 1. During the cardiac cycle the pressure in the left ventricle and right ventricle are approximately equal. 2. During isovolumetric contraction the left ventricular pressure continues to

172. ## physics

a ball is tossed from a height y 0 above the ground with an initial velocity of 10.00 m/s and angle of 25.0° below the horizontal. It strikes the ground 3.60 s later.