# Questions Asked onFebruary 14, 2011

1. ## Calc

A lighthouse is fixed 130 feet from a straight shoreline. A spotlight revolves at a rate of 11 revolutions per minute, (22 rad/min ), shining a spot along the shoreline as it spins. At what rate is the spot moving when it is along the shoreline 12 feet

2. ## geometry

the lengths of the diagonal of a rhombus are 2 in and 5 in. find the measure of the angles of the rhombus to the nearest degree. if it helps, we are learning how to use tangent right now!

3. ## Chemistry -Flame colors (check+help)

What are the characteristic flame color for sodium, potassium, barium, copper, strontium, and calcium? Explain why? Ans: i know the flame colours, but for the explain why, could the below be a possible answer? The characteristic flame color is due to the

4. ## math

it is always possible to draw a circle which passes through all four vertices of a rectangle. Explain why.

5. ## Physics-Resonance

A 3.00 m long pipe is in a room where the temperature is 20 C. What is the fundamental frequency if the pipe is closed at one end? Would this count as an open pipe still, or a closed pipe? This is what I did. Wavelength = 2L/n Wavelength = 2(3)/1

6. ## area

what is the total area of the four walls of a rectangular room 4 meters long by 5.5 meters wide by 3 meters high? is it 4 times 5.5? then times four since there are 4 walls? 88m squared?

7. ## math

There are two positive numbers that can be inserted between 3 and 9 such that the first three are in geometric progression while the last three are in arithmetic progression. Find the sum of those two numbers.

8. ## .....

what is the possessive noun in "the purses of the ladies"

9. ## ochem

list from strongest acid to weakest acid HC(triple bond)CCH3 H2C=CH2 H3CNH2 CH4 H2O i thought the order went HC(triple)CCH3 H3CNH2 H2O H2C=CH2 CH4 but it comes out as wrong and i don't know why >

10. ## physics1

A 850-kg race car can drive around an unbanked turn at a maximum speed of 61 m/s without slipping. The turn has a radius of 160 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of 11000 N on the car. (a) What is

11. ## Science

The volume of a solution was measured in a graduated cylinder (shown above). If the mass of solution is measured to be 60.75 grams, what is the density of the solution?

12. ## math

penny has 25 dimes. she likes to arrange them into three piles, putting an odd number of dimes into each pile. in how many ways could she do this?

13. ## math

A circular pond of diameter 15m is sorrounded by a path of of 2m wide find the area of the pathway

14. ## Physics

The builders of the pyramids used a long ramp to lift 21000-kg (21-ton) blocks. If a block rose 0.86 m in height while traveling 20 m along the ramp’s surface, how much uphill force was needed to push it up the ramp at constant velocity?

15. ## Physics

A range in a national park is driving at 47 km/h when a deer jumps onto the road 70m ahead of the vehicle . After a reaction of t seconds, the ranger applies the brakes to produce an acceleration of -2.00 m/s^2. What is the maximum reaction time allowed if

16. ## English

• Eliminating wordiness: 1. Seeing the barrels, the driver immediately slammed on his brakes. 2. A really well-stocked bookshelf should have classical literature on it as well as important modern works of the current day. 3. China’s enormously huge

17. ## Physics

A small first aid kit is dropped by a rock climber who is descending steadily at 1.5 m/s. A.)After 3.1s, how far is the kit below the climber?

18. ## physics

omar throws a rock down with speed 12 m/s from the top of a tower. the rock hits the ground after 2 s. what is the height of the tower?

What factors must be traded off by product development before introducing a new product?

20. ## physics (centripetal acceleration)

The second hand and the minute hand on one type of clock are the same length. Find the ratio (ac,second/ac,minute) of the centripetal accelerations of the tips of the second hand and the minute hand.

21. ## math

You have a bag of lots of red and white marbles. In the worst case, how many would you have to pull out to get two marbles of the same color? Four? Generalize by finding a formula for predicting the maximum number of marbles that you would have to pull out

22. ## Physics

You are the design engineer in charge of the crashworthiness of new automobile models. Cars are tested by smashing them into fixed, massive barriers at 56 km/h (35mph ). A new model of mass 1900 kg takes 0.15 s from the time of impact until it is brought

23. ## chemistry

the gas in the discharge cell of a laser contains(in mole percent) 11%co2, 5.3%N2 and 84%He. what is the molar mass of this mixture?

24. ## Math

a 6 ft adult has a shadow 3.6 ft long. How long is the shadow of a 5 ft child standing next to the adult?

25. ## math

A student planning her curriculum for the upcoming year must select one of four business courses, one of four mathematics courses, two of ten elective courses, and either one of four history courses or one of four social science courses. How many different

26. ## Calculus

If a figure shows a function g(x) and its tangent line at the point B=(2,6.8). If the point A on the tangent line is (1.94,6.87), fill in the blanks below to complete the statements about the function g at the point B. g(___) = ______ g(___) = ______

27. ## Physical Science

Two 125 kg bumper cars are moving toward each other in opposite directions. Car X is moving at 10 m/s and Car Z at –12 m/s when they collide head–on. If the resulting velocity of Car Z after the collision is 10 m/s, what is the velocity of Car X after

28. ## Physics

A small block of mass m=1.9kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h=52.0m above the bottom of the loop of radius R=19.0m. What is the kinetic ennergy of the mass at the point A on the

29. ## physical science

Atoms in a molecule are held together through shared __________.

30. ## calc

The sun is shining and a spherical snowball of volume 210 ft3 is melting at a rate of 14 cubic feet per hour. As it melts, it remains spherical. At what rate is the radius changing after 3 hours?

31. ## math geometry

if triangle ABC is a right triangle.If side AC=5 and side AB=10,what is the measure of side ABC?

32. ## math

A peddler is taking eggs to the market to sell. The eggs are in a cart that holds up to 500 eggs. If the eggs are removed from the cart 2,3,4,5, or 6 at a time, one egg is always left over. If the eggs are removed 7 at time, no eggs are left over. How many

33. ## math

Lauren drove her car for 3 hours in a dust storm. When the skies cleared, she increased her speed by 30 miles per hour and drove 4 more hours, completing her 295-mile trip. How fast did she travel during the dust storm?

34. ## physics

Proper design of automobile braking systems must account for heat buildup under heaving braking. Calculate the thermal energy dissipated from brakes in a 1460-kg car that descends a 15.5° hill. The car begins braking when its speed is 92 km/h and slows

35. ## physics

You push a 1.9 kg block against a horizontal spring, compressing the spring by 13 cm. Then you release the block, and the spring sends it sliding across a tabletop. It stops 60 cm from where you released it. The spring constant is 200 N/m. What is the

36. ## math

Computers manufactured by a certain company have a serial number consisting of a letter of the alphabet followed by a six-digit number. If all the serial numbers of this type have been used, how many sets have already been manufactured?

37. ## health

what is carbon monoxide in

38. ## Physics URGENT

A tennis ball with a velocity of +10.7m/s to the right is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a velocity of -5.9 m/s (to the left). If the ball is in contact with the wall for 0.009s,

39. ## physics

What is the linear speed of a point at a latitude of 18.0 N?

40. ## AlgebraII-Reiny could you please check-I'm stuck

Sikve the following by using substitution method x=3y -5 6x-18y = -30 I got this far and I'm stuck 6(3y-5) - 18y = -30 18y - 30 - 18y = -30 -30 = -30 So this doesn't make sense anymore

41. ## math

Find the percent increase in the area of a circular pizza if the radius is increased from nine inches to ten inches.

42. ## Physics

You are the design engineer in charge of the crashworthiness of new automobile models. Cars are tested by smashing them into fixed, massive barriers at 56 km/h (35mph ). A new model of mass 1900 kg takes 0.15 s from the time of impact until it is brought

43. ## chemistry

Why would it not be useful to just use pure ethanol or pure ethylene glycol as an antifreeze since their normal freezing points are -114.1 C abd -12C respectively.

44. ## physics

A 3Kg projectile is fired straight upward from earth's surface with a speed that is one-fourth the escape speed. Neglecting air resistance. a) What is the Kinetic energy of this projectile when it is launched? b) what is the gravitational potential energy

45. ## world history

007680 1. During the fourteenth century, Japanese women of aristocratic rank A. saw marriage customs change to their detriment. B. were transformed because of their ability to hold their own property separately from their husbands. C. became freer due to

46. ## chemistry

35.0 g of an organic compound dissolved in 500. g of water have a freezing point of -3.72 degrees C. What is the molecular weight of the solute?

47. ## Geometry

A right triangle has an angle that measures 55 degress. The leg adjacent to this angle has a length of 43 cm. What is the length of the triangle? Round to the nearest tenth

48. ## physics??

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the centripetal acceleration of a

49. ## Physics

A small block of mass m=1.9kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h=52.0m above the bottom of the loop of radius R=19.0m. What is the kinetic ennergy of the mass at the point A on the

50. ## geometry

ABCD is a rectangle. A is the point (0,1). c is the point (0,6) the equation of the straight line through A and B is y=2x+1. (a)Find the equation of the straight line through D and C

51. ## trig

A man standing 9 meters above the ground observes the angles of elevation and depression of the top and bottom,of the top of the monument in luneta 6 degrees and 50 minutes and 7 degrees and 30 minutes respectively.Find the height of the monument?

52. ## Calculus

If a figure shows a function g(x) and its tangent line at the point B=(2,6.8). If the point A on the tangent line is (1.94,6.87), fill in the blanks below to complete the statements about the function g at the point B. g(___) = ______ g(___) = ______

53. ## trig

At 2 points 95 ft apart on a horizontal line perpendicular to the front of a building, the angles of elevation of the top of the building are 25 degrees and 16 degrees. How tall is the building?

54. ## ap chem

Acid rain has a pH value of 3.0, whereas normal rain has a pH value of 5.6. Calculate the ratio of the hydronium ion in acid rain to that in normal rain.

55. ## ap chem

Calculate the percent ionization of a 0.76 molar solution of acetic acid. The ioniza- tion constant of acetic acid is 1.8 × 10−5.

56. ## chemistry

A 5 mL dose of Milk of Magnesia contains 400 mg of magnesium hydroxide. What mass in grams of HCl can it neutralize? Balanced equation= Mg(OH)sub2 + 2HCl---> MgClsub2(aq) + 2Hsub2O

The parents of a child have just come into a lare inheritance and wish to establish a trust fund for the child's college education. If they estimate that they will need \$100000 in 13 years, how much should they set aside in the trust now if they can invest

58. ## child development

(Penn Foster) 1- Neueon development and elaboration, which occurs between birth and age 10, is prompted by: A -aural prompts from the famiy school and environment. B-physical movement on the part of the child C- Intake of foods rich in vitamins and

Approximately how many people work in the: Finance Department? Sales Department? Purchasing Department? Personnel Department? Production Department? Marketing Department? Advertising Department? Legal Department? Administration Department?

60. ## AP PHYSICS MECH.

In Figure 9-62, block 2 (mass 1.3 kg) is at rest on a frictionless surface and touching the end of an unstretched spring of spring constant 160 N/m. The other end of the spring is fixed to a wall. Block 1 (mass 2.1 kg), traveling at speed v1 = 4.0 m/s,

61. ## algebra

Glenn invested some money is a certificate of deposit (CD) with an annual yield of 9%. He invested twice as much money in a mutual fund with an annualy yield of 12%. His interest from the two investments at the end of the year was \$396. How much money was

62. ## math

Prove that if p is a prime number and p is not equal to 3, then 3 divides p^2 + 2. (Hint: When p is divided by 3, the remainder is either 0,1, or 2. That is, for some integer k, p = 3k or p = 3k + 1 or p = 3k + 2.) I thought you might do three cases with

63. ## science

Calculate the pH of a solution created by mixing 200.0 mL of 0.400 M acetic acid and 200.0 mL of 1.00 M sodium acetate. Hint: The instant the two solutions are mixed what are the initial concentrations of each?

64. ## Physics

Two students are on a balcony 24.3m above the street. One student throws a ball, B1, vertically downward at 12.5 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

High speed stroboscopic photographs show that the head of a 188 g golf club is traveling at 52.5 m/s just before it strikes a 45.5g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 44.0 m/s. Find the speed

66. ## General Chemistry 1

If you heat copper sulfate pentahydrate to long or at too high of a temperature, what compound(s) is formed?

67. ## Calc

The sun is shining and a spherical snowball of volume 210 ft3 is melting at a rate of 14 cubic feet per hour. As it melts, it remains spherical. At what rate is the radius changing after 3 hours? I posted this question before and when i went back and did

68. ## math

If n(B) = 15, n(A B) = 25, and n(A B) = 3, find n(A).

69. ## Spanish

33. Hace tres horas _____ el piano. Me duelen mucho los dedos. a. que toco b. yo toco c. qué toco d. me toca D? 34. Ayer fui a jugar tenis; ______. a. hoy me duele la nariz b. tengo frío c. me lastimé el brazo d. siempre me siento mal C? 35. Yo no tengo

70. ## American History

So we have to draw some sort of picture that show manifest Destiny but it has to be like from Mexican-American war time.. i have NO CLUE what to draw. Help me PLEASE?!?!?!?!

71. ## geometry

what is the area of a trapazoid h=6,b1=5,b2=3

72. ## phusics

A ball is thrown vertically upward from top of a building with speed of 20m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of the building.

73. ## Economics

Some games of strategy are cooperative. One example is deciding which side of the road to drive on. It doesn’t matter which side it is as long as everyone chooses the same side. Otherwise, everyone may get hurt. Driver 2 Left Right Driver 1 Left 0,0

74. ## Physics

Two objects attract each other gravitationally with a force of 2.3×10−10 when they are 0.21 apart. Their total mass is 4.50 . Find their individual masses.

75. ## physics

A rectangular piece of Styrofoam of mass 3.0 kg floats with 5.0% of its volume underwater. What is the maximum mass that the Styrofoam can support without sinking?

76. ## math

wai ling averaged 84 on her first three exams and 82 on her next 2 exams.what grade must she obtain on her sixth test in order to average 85 for all six exams? 94

77. ## math

Brian recorded the amount of money he spent over the last 5 days. He knows that the average amount of money he spent was \$25.72. On four of the Five days, Brian spent \$15.50, \$28.41, \$31.02, and \$10.66. Determine how much Brian spent on the fifth day.

78. ## Math

A waffle cone has a width of 7.6 cm and height of 15.2cm and a chocolate coating that is 2mm thick. What is the volume of the chocolate coating? How many of these cones if they were filled up to the brim would be needed for 400 gallons of ice cream given 2

79. ## Science

How might pollen be carried from the anther to the female part of the flower?

80. ## Math

Theresa's company just bought 18 new computers. She was told that there would be a random drawing to see which employees got one of the new computers. If Theresa has 46 coworkers, what is the probability that she will get one of the new computers?

81. ## Physics

What is the emf of a battery with a 0.15 Ω internal resistance if the battery delivers 1.5 A to an externally connected 5.0 Ω resistor?

82. ## ap chem

Like all equilibrium constants, Kw varies somewhat with temperature. Given that Kw is 5.02×10−13 at some temperature, compute the pH of a neutral aqueous solution at that temperature. 006

83. ## Physics

A patient has a far point of 34.6 cm and a near point of 26.0 cm. What power (in diopters) should be prescribed to give the patient normal vision for: (a) contact lenses? 1) D (b) glasses which are worn 0.9 cm away from the patient's eyes? 2) D

84. ## English

1.I have often (dream) of becoming a great writer. 2.I (drink) two glasses of orange juice at breakfast today. 3.Their new boat (sink) in six feet water. 4.Generation have (take) wood and food from the rain forests. 5.The canal has (freeze), and the ferry

85. ## Math

Solve for X. X^3=27 x = 3 because 3 * 3 = 9 and 9 * 3 = 27. Correct? -------------------------------------- [x]= 16 X = 4^3 because 4 * 2 = 8 and 8 * 2 = 16. Correct? -------------------------------------- (x-2)^4=16 I need help on this one!

86. ## Geometry

The hypotenuse if a right triangle measures 9 inches and one of the acute angles measures 36 degress. What is the area if the triangle? Round to the nearest square inch.

2x(3y) 6xy

88. ## math

LEt f and g be continous functions with the following properties i. g(x) = A-f(x) where A is a constant ii. for the integral of 1 to 2 f(x)dx= the integral of 2 to 3 of g(x)dx iii. for the integral from 2 to 3 f(x)dx = -3A a find the integral from 1 to 3

89. ## math

How many gallons of milk containing 5% butter fat must be mixed with 100 gallons of 1% milk to obtain 2% milk?

90. ## math

Solve for x: [Sixth root of 27]+[cube root of x] = 6/(3-[square root of 3]

91. ## general physics

Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of

92. ## Economics

Rank in order from best to worst, the economic systems(command, market and mixed) according to which, in theory, best attempts to meet the conditions of The Human Development Index. Why did you rank them this way. I am thinking (in theory): 1-command

93. ## physics!

A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. Such a device is used in medical laboratories, for instance, to cause the more dense red blood cells to settle through the less dense blood serum

94. ## chemistry

A metal whose threshold frequency is 9.02×1014

95. ## Physics URGENT

A speeder passes a parked car at 35.0 m/s. The police car starts from rest with a uniform acceleration of 2.41 m/s^2. A.) How much time passes before the speeder is overtaken by the police car? B.) How far does the speeder get before being overtaken by the

96. ## science

What happens at the particle level when you put ice cubes in a glass of room temperature lemonade?

97. ## math

a right triangle whose hypotenuse is h mm long is rotated about one of its legs to generate a circular cone.find the radius and altitude of the cone of greatest volume.

98. ## Language Arts

Hello! I have to write a summary of a book that I've read, and I've been writing it, and I'm worried I'm putting in too much detail/making it too specific/too long? I wasn't sure if I'm supposed to summarize the whole plot in a couple of paragraphs, or if

99. ## Organic Chemistry

A compound whose solubility in ethanol is 4.24g/100ml at 78c and .3 g/100ml at 0c is recrystalize by heating it at 78 and then cooling it to 0c. If we are to recrystalize a .5g of this compound in a 10ml of solvent, what is the maximum possible % recovery?

100. ## physics

A 3.3-kilogram block sliding down a ramp from a height of 4.5 meters above the ground reaches the ground with a kinetic energy of 35 joules. The total work done by friction on the block as it slides down the ramp is approximately: [1 d.p.]

101. ## Math

The letters A,B,and C represent three different digits. Determine the number ABC if ABC + ACB ---------- BCA

102. ## math

find the x and y intercepts -5x+9y = -45

103. ## geography

Why does 10 degrees of latitude have a different distance at the equator than at the poles?

104. ## writing

Hilda takes an enormous amount of space, though so little time, in my adolescence. Even today, her memory stirs me; I long to see her again. She was three years older than I, and for a short while all I wanted was to look like, sound like, and dress like

a teaher chooses a student at random from a class of 10 boys and 15 girls. Find the odds favor of and for the odds against each event. 1. choosing a girl 2. choosing a boy i don't understand what the odds of something would be

106. ## math

write the slope intercept equation for the line with slope 1/2 and y intercept (0,-5)

107. ## physics

A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 16° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 8.4 N, what is the tension in the rope?

108. ## world history

007679 1. A staple food transplanted from Southeast Asia to the Mediterranean world as a result of the Islamic Empire was A. wheat. B. rice. C. yams. D. potatoes. 2. How did Alfred the Great secure his modern reputation as a state-builder? A. He gave free

109. ## science

if you weigh 100 pounds on earth than how much would you weigh on each other planet in our solar system

110. ## algebra 2

I am so stuck on this factoring thing. how do you solve: 1)15a(squared)b-10ab(squared) 2)x(squared)-8x-8 3) 6p(squared)-17p-45 4)2r(cubed)+250 5)x(to the 6th power)-64 6)x(squared)-xy+2x-2y 7)x(to 4th power)-1

111. ## math

solve -7(11-4w)-15 = -27-(50-13w)

112. ## game theory

Consider the following game. Player 2 L R U 6, 1 ........8, 3 Player 1 UM 4, 9........8, 4 DM 7, 2 ............6, 9 D 5, 4...........9, 3 (a) Is there a mixed strategy Nash equilibrium in which player 1 is placing positive probability only to strategies DM

113. ## Math

A circular tablecloth is draped over a rectangular table so that the center of the cloth is directly above the center of the table. The table is 6 X(times) 2sqrt(3)feet, and the cloth has a radius of 2 feet. What is the area of the portion of the

114. ## Chemistry

Ozone, O3, absorbs ultraviolet radiation and dissociates into O2 molecules and O atoms: O3 + hv --> O2 + O A 1.10 L sample of air at 22 degrees Celsius and 748mm Hg contains 0.25ppm of O3. How much energy, in joules, must be absorbed if all the O3

115. ## Science fir 11 yr olds

Experiment in rust: does anhydrous calcium chloride in solid form prevent rust on matal nails is submerged for 5 days? Is it available in liquid form? If yes, does that prevent a nail from rusting after 5 days? Many thanks

A box contains 6 red balls, 4 white balls, and 5 green balls. If three balls are drawn in succession without being replaced, what is the probability that they are drawn in the order red, white, green?

117. ## English

1. Have the salmon always (swam, swum) in this river? 2.After the sun has (rose, risen) everyone felt better. 3.Grandfather (lay, laid) out a pair of clean pants for you. 4.Thank you, but I have already (ate, eaten) lunch. 5.After a short rest, we (rose,

118. ## Math

When the waiter was asked to slice the 16-inch (in diameter) pizza into exactly 4 slices of equal size, he decided to do so using concentric circles rather than radial slices. Determine the radii of each of the three cuts he had to make.

119. ## algebra

3x + 4 > 9, with x = 2 determine whether or not the solution provided is a solution to the inequality. If the value he or she provides is a solution, provide a value that is not a solution. If the value is not a solution, provide a value that is a

120. ## managerial economics

assuming that the firm's goal is to maximize present value of the profits in the subsequent 5 years, which of the following flows of profit would achieve that goal? Justify your answer. Note that the flows are represented by 5-tuples, i.e. five number each

121. ## Math

Factor Completey: f(x)= x^7 +2x^6 -8x^5 -10x^4 +19x^3 +8x^2 -12x

122. ## Physics

A particle is traveling in a straight line at a constant speed of 25.4 m/s. Suddenly, a constant force of 12.8 N acts on it, bringing it to a stop in a distance of 58.6 m. How long does it take to stop and what is the mass of the particle? *Don't I need

123. ## chem

A balloon holds 29.3 kg of helium. What is the volume of the balloon if the final pressure is 1.2 atm and the temperature is 22°C? using the equation pv=nrt would i put 29.3 kg in place of n? but n has to be in moles so how do you convert that? thanks

124. ## physics

Assume acceleration due to gravity=10 m/s. A ball is thrown vertically upward from top of a building with speed of 20 m/s. On the way back ball misses the building and lands on the ground. Total time the ball is in air is 6 seconds. Determine the height of

125. ## Math

What has the biggest volume a ton of feathers or a ton of cement?

126. ## Basic Math

I need help adding fractions with different denominators. Here is the problem... 1 - 1/2 + 1/3 - 1/4 + 1/5 - 1/6 I can see that the demoninators increase. Since they are both addition and subtraction, how do I do this problem? Thanks, Walter, New York.

127. ## Health, Safety, and Nutrition (Penn Foster)

Health, Safety, and Nutrition 1. Today in class you’re going to talk to your students about Vitamin C and what it does for a person’s body. From which one of the following food groups should you select your snack for today? A. Bread, cereal, rice, and

128. ## Math

Solve by the elimination method 7x-y=17 x+7y=31 What is the solution of the system?

129. ## ap chem

If the H3O+ concentration is 10−7 M, what is the pH?

130. ## math

A dealer has 10,000 gallons of unleaded gasoline. He wants to add just enough ethanol to make the fuel a 10% ethanol mixture. How many gallons of ethanol should be added?

131. ## English

Can you please check these sentences which I reworded? Thank you.(Check the word choice please) 1)I sort my rubbish (trash) into four separate bins which are located in a kitchen cupboard under the sink: one is for plastic, one is for paper; one is for

132. ## math

eight year from now. Oana will be twice as old as her brother is now. Oana is now 12 year old. how old her brother now umm 10

133. ## math

write the slope intercept equation for the line that pass through (-12,10) and is perpendicular to 4x+6y =3

134. ## geometry

If AB is opposite AC and AC is opposite AD , what can you conclude? Explain.

135. ## chemistry

19. Convert 15 ppm of benzene to mg/m3 at 20 oC and 720 torr Density of a gas is g/L = P(MW)/RT (740 torr x 1 atm/760torr)(78.114g/mole)/ (.0821L atm/mole K)(293K) = 3.16g/L 1ppm =1 L Benzene/106 L of air = 1L ben/1000 m of air = 0.001 L ben/m3 = 0.00316

136. ## math

The equation of the line is 6y+5x=15 The point (-12,k) lies on the line. Find the value of k.

137. ## Math

Mrs.Chou placed 45 cookies on a plate, and 36 of the cookies were chocolate chip. What percent of the cookies on the plate were NOT chocolate chip?

138. ## english

Inthe short story ''the guest'' what does this quote mean ''...dirty white snow...''(Camus 9) Explain the quote interms of the figurative device. what is the theme? How does it connect to human nature? pls i really need your help. this work is due tomorow

If Julie draws a card from a standard deck of well-shuffled playing cards, what is the probability that he draws either an ace or a heart?

140. ## English

Can anyone give me details or tell me what else should I talk/ more information on something. I ran out of ideas/ thoughts. This is what I got. What media would you use for your communication skills to advertise? I would used the television for my

141. ## matemáticas

El perímetro de la base rectangular de un piano es de 16 pies. ¿Cuáles son todas las dimensiones posibles del piano, usando sólo números enteros de los pies?

142. ## Amazon

How does Amazon produce consumer faith in amazon site and its products?

what effect might the economics socioeconomic forces wthin south korea have on a products potential

144. ## Physics

A car travels in a straight line for 5.4 h at a constant speed of 79 km/h . What is its acceleration? Answer in units of m/s2.

145. ## marketing

Briefly describe your selected problem when buuying a car?

146. ## math

a teaher chooses a student at random from a class of 10 boys and 15 girls. Find the odds favor of and for the odds against each event. 1. choosing a girl 2. choosing a boy i don't understand odds of something please help.........

147. ## math

during one year the Wagners real estate bill included \$600 for local schools. Of this amount, \$150 went to the high school district. what percent did the Wagner family pay to the high school district?

148. ## math

What multiplication fact could you use to find a number that can be divided evenly by 8 and by 9?

149. ## hcs/335

I need to finish a paper and i cant think of any issues that could affect his decision. what are some ethical issues that could affect a medical assistant's decision to prescribing meds?

150. ## math

23 students went to the school store, 17 bought pencils,12 bought paper, how many purchased both?

151. ## math

deon runs 3 miles in 35 minutes. At the same rate, how many miles would he run in 84 minutes?

152. ## Math

A speaker was so boring that one-half of the audience left after a few minutes. Five minutes later, one-third of the remaining audience left. Ten minutes later, one-fourth of those remaining left, leaving only nine people in the audience. How many people

153. ## history

"Rather than a radical departure from capitalism, the New Deal was a conservative defense of capitalism." Assess the validity of this statement.

154. ## Geometry altitude

a(-2,4) b (4,6) c (-4,-4) find the equation for the altitude from each vertex of triangle abc.

155. ## geometry

a rectangular-shaped garden has a length of 40 feet and a width of 15.how many more square feet of garden could be obtained by increasing both the length and width by 10 feet

156. ## Physics

A glacier moves with a speed of 42 nm/s. How many years would it take for the glacier to move 0.78 km? Answer in units of yr.

157. ## Physics

A glacier moves with a speed of 42 nm/s. How many years would it take for the glacier to move 0.78 km? Answer in units of yr.

158. ## Algebra 1

I do not understand how to figure out probability. Lee has an urn with 8 white marbles and 10 black marbles. A marble is drawn at random and not replaced. Then a second marble is drawn randomly. What is the probability that the first is white and the

159. ## Math

Write a function rule to describe each situation The sellings price s(c) after a 45% markup of an item as a functiom of the stores cost c.

160. ## calculus

2 forces F1 = 2i-3j and F2 = 3i + 12j are applied at a point. What force F must be applied at the point to counteract the resultant of these 2 forces?

161. ## Chemistry

I am doing a Catalase lab (Enzymes) I don't understand this question: What are the controls in the experiment?

162. ## consumer economics

Phonecia deposits \$300 into a simple interest account that pays 3%. After 7 months what will be the total value of her account? A.\$309.00 B. 305.25 C. \$321.00 D. \$9.00

163. ## chem

An experiment shows that a 114 mL gas sample has a mass of 0.167 g at a pressure of 721 mm Hg and a temperature of 32°C. What is the molar mass of the gas? so im suppose to find the molar mass but i thought that was the same as the g just converting it..?

164. ## Physics...

A burn produced by live steam at 100oC is more severethan one produced by the same amount of water at 100oC.Verify this, calculate the heat that must be removed from 5.0 g ofwater at 100oC to lower its temperature to34oC.. Then calculate the heat that must

165. ## Algebra 1

I do not understand how to figure out probability. Lee has an urn with 8 white marbles and 10 black marbles. A marble is drawn at random and not replaced. Then a second marble is drawn randomly. What is the probability that the first is white and the

167. ## algebra

subtract x-8=2/7 x+8

168. ## Algebra

I would like to know if I did these problem right? y + 2x =3 Y +2x=-4 Y+2*x-3=0 y=2*x+4=0 If not can you show me the steps

169. ## math

If Juan can consume in one sitting one medium (12-inch diameter), deep-dish (1-inch thick) pizza, what is the minimum volume of his stomach?

170. ## ap chem

What is the pH at 25C of a 0.17 M solution of the acid HClO which has an ionization constant of 3.5 × 10−8?

171. ## urgent help chemistry!!

2H2 +O2 ---> 2H20 A container at a o degrees celcius is filled with a mixture of oxygen and hydrogen. The fastest way to establish an equilibrium is.. 1. add more H2 2. do nothing, equilibrium will occur 3. increase the temperature 4. increase surface

172. ## chemistry

What's the particle diagram of Carbon monoxide? Thank you

173. ## College algebra

Graph f(x)=2(x+1)^2+4 Graph f(x)={2 if x>1 -5-x if x

174. ## Amazon

What is an astore? aStore is an Amazon joining product which website owners can use to create an online store on their site

175. ## probability

I was asked to find the probaility if a board game uses the deck of 20 cards. And find how many have the number 3. I came up with 4/20 and was told that I'm on the right track but I need to find P(3 and 3) with replacement and without replacement. What

176. ## math

Stacy multiplied 5x9 and said the answer was 44. What two patterns could you use to show that her answer is not correct? ...

177. ## Algebra 1

Solve the following system of equations: x^2+y^2=24 x-y=2

178. ## Algbra

I need help with the following question. Solve for y: 3x - 2y = 8 + x Please show the steps and the answer, thanks.

179. ## biology

what are the four main sources or causes of disease causing agents?

180. ## math

write slope intercept equation for the line that pass through (2,-7) and (4,-13)

181. ## Spelling/Grammar

_____ of the nature center is one of the year's goals. What is the answer... from the word box? _______________________________________ WORD BOX _______________________________________ 1. Persuasion 2. Discrimination 3. Expansion 4. Opposition 5.

182. ## ELA

I need an interesting eye-catching hook, which relates to the theme Privacy and Security.

183. ## chemistry

why is it recommended to carryout iodometric titrations as quickly as possible and to get the first endpoint

If you add 4 grams of KCl to 10g of water at 28 C, would the solution be saturated, unsaturated or supersaturated?

185. ## algebra

If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle

186. ## algebra

How do you know if a value is a solution for an inequality? How is this different from determining if a value is a solution to an equation?

187. ## social studies

In the early colonization of both New France and New England, the French and English brought new ideas and ways that were strange to the Native Americans who already lived there. Even though, both Eur

188. ## algebra

9x - 7 = 6x + 3 x = ___ Only type in the numeric answer in the box below and round your answer to the nearest tenth!

189. ## social studes

i need help unscrambling puritans social studies letters like pitunsa crchhc and that equals to puritan church. PLEASE NEED HELP FAST this is due wen.feb.16 2011

190. ## Geometry

How do you solve 3= 9 =6y x 2x+5 20

191. ## English

1.It was so cold that the water in the fountain had _____. (freeze) 2.Masato's bike has _____ on the sidewalk all day. (lie) 3.Shelia has never ____ a mountain bike. (ride) 4.Last sprin Urbi and Joe _____ every morning. (swam) 5.Has the rider been _____

192. ## Chemistry

How much of a 500 ml bottle of 1.00 molar KCI solution should be diluted with deionized water to give 200.0 ml of a 0.100 molar solution

193. ## chemistry

can someone tell me how to draw the condensed structure for 4-ethyl-3,3,4-trimethyloctane and 2-methyl-5-(2-methylpropyl)nonane

194. ## Amazon

What services do fulfill ment stations provide 4 amazon? They provide warehousing and order-fulfillment for third-party sellers?

195. ## Math

I need to have 20,000 in the bank after 1 year can you tell me what my initial deposit must be if I have a intrest rate of 4% a year.

196. ## Physics

A 360-kg satellite is in orbit around the Earth 10000 km above the Earth's surface. (a) What is the weight of the satellite when in orbit? [Answer is in N] (b) What was its weight when it was on the Earth's surface, before being launched? [Answer is in N]

197. ## FSU

*Explain the meetings that resulted in the Japanese seeing “Rolls-Royce, Rolls-Royce, Ford,” and how was this part of Americans “clamoring for the outlawry of war?”

198. ## english 101

Identify the topic and three subtopics for healthy eating

199. ## CRIMINOLOGY

what are the three most prominent elements of socialization?

200. ## Science

For this assignment, think about the impact that two (2) of your meals have on our world from an ecological and economic perspective. You can pick breakfast, lunch or dinner, and then answer the following questions. in 1,000-words, using APA style

201. ## Algebra

Use algebra to evaluate the limit lim h->0((2−h)^2−8)/h

202. ## College algebra

Write equation m=9/8 through (6,4) in slope intercept form

203. ## CHEMISTRY

19. Convert 15 ppm of benzene to mg/m3 at 20 oC and 720 torr Density of a gas is g/L = P(MW)/RT (740 torr x 1 atm/760torr)(78.114g/mole)/ (.0821L atm/mole K)(293K) = 3.16g/L 1ppm =1 L Benzene/106 L of air = 1L ben/1000 m of air = 0.001 L ben/m3 = 0.00316

204. ## U of M astronomy

if a planet has a period of 1 century, what is its average distance from the Sun in AU?

205. ## geometry

Find the area of a rectangle that has one side measuring 10 cm. and a diagonal measuring 26 cm.

206. ## PERSON!!!!!

I have no money at all no credit card or checks or anything! So can someone please tell me where to get a free background check or free record check?? I really need this please!!

207. ## English

Can you please tell me if the word choice is correct? Thank you very much. 1)The play opens with the news that Macbeth has succeeded in defending Scotland from an invasion by the Norwegians. 2) While returning from his victorious battle, Macbeth and his

208. ## physics

How gravitational acceleration (g) is used to benefit mankind and the environment. How can rural people also benefit from the use of gravitational acceleration?

209. ## trig

Cos theta= 1/3, find the remaining trigonometric functions of the acute angle theta

210. ## algebra

V=1/3*6300*7 solve for V The answer is V=14700 how do you change 1/3 to a decimal or use 1/3 to solve the equation?

can someone help me with some information on each one of this. Employee Receives Either Rewards or Punishments Employee Identifies Need Employee searches for ways to satisfy these needs Employee Reassess Need Deficiencies Employee Performs Employee Selects

212. ## English

I still have a few doubts about the use of the gerund and infinitive in English. I hope you can have a look at these sentences, too. 1)I cannot resist drinking a glass of water. 2) He missed being tested. He missed being struck by the ball. 3) She caused

213. ## Math

Let f(x)=ax^5+bx^3+cx+9, where a,b, and c are constants. If f(6)=17, determine the value of f(-6).

214. ## Chemistry

Rearrage the following equation to make sence, Q=CWxMxT

215. ## Amazon

What services do fulfill ment stations provide to amazon?

216. ## math-inequalities

Hi, I am having some problems with inequalities. It is asking us to solve and graph on a number line and then write it in interval notation and set notation. X>2 and X>4 I graphed them in a number line already and i have the following: Interval notation

217. ## math

A 75ft diagnol brace on a bridge connects a support of the center of the bridge The horizontal distance that it spans is 15ft longer than the hieght that reaches on the side of the bridge.Find the horizontal and vertical distance spanned by this brace

218. ## Algebra

Show that (1-2*x*y+1)/(x^2*y-x) simplifies to -2/x

219. ## chemistry

find the pH of 10 mL of 1.00M solution after adding 10.00mL of indicator solution

220. ## math

How much money must I start out with if I want to end up with 20,000 over 5 years with and intrest rate of 5% a year.

221. ## Math plz help

The shoe sizes and the sizes for men Positve, Negative, or no correlation?

222. ## psych

Language Paper (12 points): This paper should be posted as a Word attachment in the Assignment Section and should be consistent with APA guidelines. Prepare a 1050 to 1400-word paper in which you examine language as it relates to cognition. Address the

223. ## English

As I'm not a native speaker, I would like to know how to express my sentences in American English. Thank you very much for your help. 1)I sort my rubbish (trash) into four separate bins which are located in a kitchen cupboard under the sink: one is for

224. ## Native History

what are the two "views" of King Phillips war??

225. ## math

a lot owner owns a corner lot , 60mx80m, .find the dimensions x, y of the largest rectangular building he can built pn his lot?

226. ## College algebra

Write the equation parallel to y=-2 (3,6) Equation perpendicular to y=-5 (4,7)

227. ## math

find two numbers whose product is N^2 and whose sum is a minimum

228. ## social studies

what was a puritan business charter? why was it important? and why did king chrles stopped giving out the charter? Can you explain the importance of this charter? please. -thank you:)

229. ## algebra

If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle

230. ## Amazon

y would businesses want to use aStore on Amazon? Is it because it is free worldwide to use?

231. ## environmental 100

What is a good environmental topic for my essay paper. I can't think of one. Help!

232. ## Physics

A glacier moves with a speed of 42 nm/s. How many years would it take for the glacier to move 0.78 km? Answer in units of yr.

233. ## Chemistry

What is the purpose of baking a chemical pie?

234. ## math

If a scale on a map is 2.5 cm to 30 miles..if two cities are 8 cm apart on the map what is the actual distance between the 2 cities? I have 96 miles but not sure if that is right.

235. ## Amazon

y would businesses want to use aStore on Amazon?

236. ## Math

Three brothers divide 17 candy bars. The oldest child gets 1/2, the middle child 1/3, and the youngest child 1/9. So that they do not have to cut any bars, Mom provides an extra one. The oldest child then takes 9 candy bars, the middle child 6, and the

237. ## all

could anyone tell me where to find good information on India sports and their actions and how that compare to the U.S.?

238. ## Trigonometric Ratios

Right traingle ABC is graphed pm the coordinate plane and has vertices at A(-1,3), B(0,5), and C(4,3). What is the measure of angle C to the nearest degree? F:27 G:29 H:32 J:43

239. ## Math

Write a function rule to describe each situation The sellings price s(c) after a 45% markup of an item as a functiom of the stores cost c.

240. ## Physics

A rocket moves upward starting from rest with an acceleration of 32.5 m/s^2 for 4.52s. It runs out of fuel at the end of the 4.52 s but does not stop. How high does it rise above the ground?

241. ## Pre Calc

Solve the non-linear inequality: x^3-5x^2-14x

8x+4/2

243. ## English

1.We (see) tropical fish in the warm waters surrounding the island. 2.Have you (speak) to your parents about the field trip? 3.Teresa has (choose) the smallest piece of chicken. 4.Yesterday someone on the radio (sing) a song about Brazil. Just seeing if I

244. ## Spanish

33. Hace tres horas _____ el piano. Me duelen mucho los dedos. a. que toco b. yo toco c. qué toco d. me toca D? 34. Ayer fui a jugar tenis; ______. a. hoy me duele la nariz b. tengo frío c. me lastimé el brazo d. siempre me siento mal C? 35. Yo no tengo

245. ## Physics AP

A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 27.8 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 196 m), the block swings

246. ## geometry

Why do you use 1/3 in volume formulas?

247. ## Semicolon

Marielle, the coordinator, was eager to begin the speeches, awards presentation, and banquet, but the guest speaker, who was flying to Chicago, had not arrived. Do I need a semicolon in this sentence?

248. ## history

*Explain the meetings that resulted in the Japanese seeing “Rolls-Royce, Rolls-Royce, Ford,” and how was this part of Americans “clamoring for the outlawry of war?”

249. ## CHEMISTRY

Grams/mole benzene

250. ## CHEMISTRY

Benzene equals 78.11 grams/mole

251. ## College algebra

Write the equation of m=6/7 through (0,3) in standard form

252. ## Amazon

Is amazon exclusive like a thing you have to pay for to watch or see. usually exclusive things are only for membership.

253. ## Math

If a bug crawls 2cm up and 1cm down each day how long does it take for the bug to reach the top of a 12cm jar

254. ## software

I want a conclusion on system & app. Software for my i.t. Project. Not big but small i.e. A paragraph for class 9th

255. ## Math

What is an interpet in mathmatical terms? i really need help with my homeework!

256. ## English

I forgot to include the following statements. Thank you very much for your help! 1) A camp instructor was thrown out of his raft and hit his head on the rock. 2) Though he lost consciousness, two of his students called the emergency services. 3) An

257. ## child daycare

what type of atmosphere should be created for school aged kids?

258. ## global science

Where do the cold and hot winds come from in Hawaii, Honolulu

259. ## accy 201

i need help with adjusting and paying accrued expenses for three separate situations and also preparing an income statement and statement of retained earnings for Resource Trucking Company for December 31,2009

260. ## math

write each ratio in simplest form 3.5 to 0.5

261. ## social studies

what were the conflicts between native american and europeans

262. ## social studies

The roles of key historical figures

263. ## Pre Calc

Solve the non-linear inequality: x^3-5x^2-14x

264. ## Grammar

my son has to pick out "key words" in a story. what are "key words" and can I get an example? Please and thanks.

265. ## Math

Find the quotient of l 4/5 divided by l/3

266. ## math

find the y intercept of the line in the given equation y = 3/4x-2

267. ## algebra

how do u do this 1 over 2x^-5 (rewrite to make it pozitive)

268. ## math

add 16 to k k + 16 = m use the rule and equation to make an input/output table?

269. ## Calculus

find derivative of w(x)= (23e^x)/4^x

270. ## environmental 100

Which government agencies are involved with government-owned lands

271. ## math

The year 1991 was the last year of the twentieth century whose number is a palindrome, that is, reads the same backward and forward. How many years between the years 2000 and 3000 will be palindromic?

272. ## math2

an open right circular cylindrical tank of given volume stands with vertical axis. the material of its bottom costs twice as much per unit area as that for the sides. find the most economical proportion?

007681

274. ## math

Andy has 16 toy cars 2/5 are red, 3/4 are white what fraction of the cars are black?

275. ## maths

solve for x from (0.008)^x=1/25 i'm confuse help me

276. ## FP/101

Why is it important to go through these steps when you are planning on making a large purchase?

277. ## Math

It's a trapeziod where the height is 13.8 in. and there is two lengths 8in. And 18 in. what is the area?

278. ## English

Using the correct form of (eat, ate, sit, set) 1.Someone (eat) all the leftover sandwiches. 2.Thank you, but I have already (ate, eaten) lunch. 3.After splitting the logs, the farmer (sat, set) his ax on the ground. 1.ate 2.eaten 3.set

279. ## english 101

i need help on healthy eating what 3 credible sources from the internet

280. ## Amazon

what is amazon exsclusive?

281. ## college algebra

add 1 + 9 x+7 5x

282. ## Derivatives

Find the derivative of g(t)=8t^2+9t at t=1 algebraically... g'(1)= _________

283. ## helpppppp

what role do insulators play in preventing electric shock?

284. ## ap chem

The pH of a 0.100 M solution of a weak acid HA is 4.94 . Calculate Ka for the acid.

007682

286. ## math

how do you go about solving liner equiaions?

287. ## math

solve for d k=2c-9d/8

288. ## math

solve using set builder notation -8-11(3x+7)less than or equal to -40x-9

289. ## math

whats the equation of a line

290. ## math

60x30/60+30 20

291. ## exponents

how do i find the value of exponents

292. ## math

If there are 7:5 boys and girls in a class and there are 21 girls how many boy are there in the class?

293. ## math

what is a short and easy way to find the least common multiples

294. ## English

what does it mean to not pass judgement on someone?

295. ## maths

solve for x from (0.008)^x=1/25 i'm confuse help me

296. ## math

average of 65,49,24,15

297. ## maths

solve for x from (0.008)^x=1/25 i'm confuse help me

298. ## maths

solve for x from (0.008)^x=1/25 i'm confuse help me

299. ## math

how much meters go in 38,000cm

300. ## math

given the linear equation y = -2/3x -2. find y coordinates of the points (-9) (-3) and (6)

7x-x= 6x

302. ## english hs

what else can you say beside "thank you" to an interviewee??

In a drawing for a dvd player, there are 100 tickets in a box.Five of the cards are marked with a star and the rest are marked with an X. To win, Carmen must draw two cards, without replacement, both of which are marked with a star. What is the probability

304. ## math

(5+ 4x)-(3-3x)= 2+7x

If 3-x>10 x

306. ## science

wat are the 3 laws of motion...simple understandable definition plz thanks :)

(6^2)^3

-25+50=

309. ## math

what is log0.033 -log(3.3*10^-2)

310. ## math

simplify -4[-7-(-2+8)]

311. ## Math

Show me how to solve 3(+4x -1)

312. ## math

the value of 3^5+3^5+3^5 is 3^6

313. ## math

made a mistake in the problem: -7(11-4w)-15w = -27 -(50-13w)

314. ## math

the number of dogs taken in daily at a local animal shelter increased from 4 in october 2009 to 10 in january 2010. predict the number of dogs taken in daily in may 2010.

315. ## maths

solve for x from (0.008)^x=1/25 i'm confuse help me

316. ## maths

solve for x from (0.008)^x=1/25 i'm confuse help me

317. ## maths

solve for x from (0.008)^x=1/25 i'm confuse help me

318. ## maths

solve for x from (0.008)^x=1/25 i'm confuse help me

319. ## maths

solve for x from (0.008)^x=1/25 i'm confuse help me

320. ## maths

solve for x from (0.008)^x=1/25 i'm confuse help me

321. ## science

can you give me a websight on electrons.

322. ## Math

4x2squared +9 \3-(8+3)

323. ## science

what keeps the moon traveling in the same path eah time it orbits earth