# Questions Asked onApril 10, 2013

1. ## math

The average number of calories in a 1.5 ounce chocolate bar is 225. Suppose that the distribution of calories is approximately normal with standard deviation =10. Find the probability that a randomly selected chocolate bar will have a) Between 200 and 220

Q: A pair of fruit flies reproduces and has 1000 offspring. All 1000 of the offspring have the alleles Gg. What is the most likely combination of alleles that each parent has, and why are other combinations not likely?

3. ## Math

ABCD is a rectangle with area equal to 36 square units. Points E, F, and G are midpoints of the sides on which they are located. How many square units are there in the area of triangle EFG? Explain your answer in detail.

4. ## math

Alana bought 3/8 pound of swiss cheese and 1/4 pound of American Cheese. Which pair of fractions cannot be used to find how many pounds of cheese she bought in all a)6/16 and 4/16 b)9/24 and 6/24 c)24/64 and 8/64 d)15/40 and 10/40

5. ## multiplied

when 2.49 is multiplied by 0.17, the result rounded to 2 decimal places is? a 0.04 b 0.42 c 4.23 d .423 e .40

6. ## MATH ALGEBRA

Holly has a rectangular garden that measures 12m by 14m. SHe wants to increase the area to 255m^2 by increasing the width and the length by the same amount. What will the dimensions be of the new garden ? -solving that involves quadratic equations

7. ## statostocs

The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of 0°C at the freezing point of water. Tests on a large sample of these thermometers reveal that at the freezing point of water, some give readings

8. ## Chemistry

55 kJ of heat are added to 200 kg of a metal at 28.00◦C and the temperature rises to 29.18◦C. What was the metal? 1. tungsten (speciﬁc heat = 0.134 J/g · ◦ C) 2. copper (speciﬁc heat = 0.385 J/g · ◦ C) 3. silver (speciﬁc heat = 0.233 J/g ·

9. ## Math

The average monthly mortgage payment including principal and interest is \$982 in the United States. If the standard deviation is approximately \$180 and the mortgage payments are approximately normally distributed, find the probability that a randomly

10. ## Math

In a recent year there were the following numbers (in thousands) of licensed drivers in the United States. MALE: Age 19 and under - 4746 Age 20 - 1625 Age 21 - 1679 FEMALE: Age 19 and under - 4517 Age 20 - 1553 Age 21 - 1627 Choose one driver at random.

11. ## ~ Math Statistic

A random sample of state gasoline taxes (in cents) is shown here for 12 states. Use the data to estimate the true population mean gasoline tax with 90% confidence. Does your interval contain the national average of 44.7 cents? 38.4 40.9 67 32.5 51.5 43.4

12. ## Biology

In conventional human radiological imaging (e.g., MRI, PET, CT) of the head, the axial plane is synonymous with the horizontal plane. Which of the following statements about this plane is most accurate? The axial plane is an axis of symmetry in the

13. ## Physics Heat

1) Peter is heating water on the stove to boil eggs for a picnic. How much heat is required to raise the temperature of his 10.0-kg vat of water from 20.0℃ to 100.0℃? Formula>> Q=mTcp 2)Under the spreading chestnut tree of the village blacksmith dunks

14. ## Chemisrty

What volume of oxygen, measured at STP, can be prepared by heating 2.16g HgO?

15. ## chemistry

Hydrogen iodide reacts with itself to give hydrogen and iodine. The equilibrium constant is about 2.0 x 10─3 at a particular temperature. If you were to place some hydrogen iodide in a container and seal the container, what would you expect to find at

16. ## Physics

A ray of sunlight is passing from diamond into crown glass; the angle of incidence is 36.00°. The indices of refraction for the blue and red components of the ray are: blue (ndiamond = 2.444, ncrown glass = 1.531), and red (ndiamond = 2.410, ncrown glass

17. ## Chemistry

What volume does 3.01 x 10^21 molecules of N2 occupy at STP?

18. ## Biology

Theme A: Surface anatomy of the brain Of the following pairs of directional terms, which pair contains terms that define PERPENDICULAR (orthogonal) directions when applied to the identified region of the central nervous system? in the brainstem, ventral &

19. ## Chem

Calculate ΔGo (in J) for 1 moles of electron(s) in each half-reaction and a standard potential of 0.34 V. I got .86 Calculate Keq for 2 moles of electron(s) in each half-reaction and a standard potential of (-0.44) V. I got -.36 Calculate the potential

20. ## Justice

In ancient Rome, Christians were fed to the lions in a public spectacle intended to entertain the masses. Which of the following sounds most like something that Mill might say about this situation?: a) Since all pleasures are of the same quality, all that

21. ## Calculus

The management of the Titan Tire Company has determined that the quantity demanded x of their Super Titan tires/week is related to the unit price p by the relation P=132-x^2 where p is measured in dollars and x is measured in units of a thousand. Titan

22. ## Physics

When a converging lens is used in a camera (as in the first drawing), the film must be placed at a distance of 0.240 m from the lens to record an image of an object that is 4.30 m from the lens. The same lens is then used in a projector (as in the second

23. ## math

Three groups of students are sharing leftover pizza (all the same size originally) Which group gets the most pizza? 6 students share 3/4? 3 students share 1/3? 4 students share 2/3?

24. ## math

A study conducted by a TV station showed the number of televisions per household and the corresponding probabilities for ecach. Find the mean, variance, and standard deviation. (in table) Number of televisions 1 2 3 4 Probability P(X) 0.32 0.51 0.12 0.05

25. ## math

a blue rectangular tile and a red rectangular tile are similar. the blue tile has a length of 10 inches and a perimeter of 30 inches. the red tile has a length of 6 inches. what is the perimeter of the red tile?

26. ## math

The students in Mr. Stevens class are having a turtle race. The race will last 2 minutes. Find the distance from the start each turtle will be at the of the race.Rex 1/6 speed (in inches per second).Whatwas the distance at the end of the race.

27. ## chemistry

A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water, calculate the volume of household bleach that should be diluted with water to make 500.0 mL of a pH = 10.23

28. ## chemistry

Sulfur and chlorine can react together to form S2Cl2. When 1.00g of this sulfur chloride reacted with water, 0.36g of a yellow ppt of sulfur was formed together with a solution contianing a mixture of sulfurous acid, H2SO3, and HCl acid. Use the above data

29. ## chemistry

The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted. If 0.460 moles of a monoprotic weak acid (Ka = 3.8 × 10-5) is titrated

30. ## Dynamics of Rigid Bodies

A 40 lb missile moves with a velocity of 150 ft/sec. It is intercepted by a laser beam which causes it to explode into two fragments A and B which weigh 25 lb and 15 lb, respectively. If the fragments A and B travel 45 degrees counter-clockwise from

31. ## tempertaure question

the temperature at 8:00am was -6*C. By noon, the temperature had risen by 13*C. what was the temperature at noon? a.-20* b.-6* c.7* d.13* e.other

32. ## Chemistry

How much energy in kilocalories is needed to vaporize 255g of water? The heat of vaporization of water is 540 cal/g.

33. ## English

Can somone check if my sentences on Owen's poem "Dulce and Decorum est" are correct? Thank you very much The title of his 1917 poem Dulce et Decorum Est translates to “It is sweet and right” – a direct quotation from Ode, written by Latin poet Horace

34. ## Physics

A microscope is focused on a mark on a table. When the mark is calculated by a glass plate of 3.00cm thick,the microscope has to be raised 1.1cm from the mark to be once more in focus.calculate the refractive index of the glass.

35. ## Chemistry

ph of a 0.234 m nahco3 solution look up the appropriate ka or kb value

36. ## LA

What was the Supreme Court's ruling on the Dred Scott case? Dred Scott should be considered free since he had lived in many states where slavery was banned. Dred Scott could be free if he paid a fee. Dred Scott was still a slave and not a citizen. The case

37. ## Chemistry

1.Write an equilibrium constant equation for the following reaction: 4NH3(g)+5O2(g)= 4NO(g)+6H2O(g) 2. What does the above [] mean in the above equation?

38. ## Calculus 2

A farmer wishes to build a fence for 6 adjacent rectangular pens. If there is 600 feet of fencing available, what are the dimensions of each pen that maximizes total pen area? I keep getting x=150 but I have been told that is not enough fencing. Can anyone

39. ## Dynamics of Rigid Bodies

Two cars, A and B, are traveling along the same route. Car A is traveling at 4.5 m/s and has a mass of 1150 kg. Car B is traveling at 6.7 m/s and has a mass of 1300 kg. If car B gently bumps into car A and their bumpers lock together, what will be their

40. ## Algerbra

A boat's crew rowed 10.5 miles downstream, with the current, in 1.5 hours. The return trip upstream, against the current, covered the same distance, but took 3.5 hours. Find the crew's rowing rate in still water, and the rate of the current.

41. ## Chemistry

1.Write an equilibrium constant equation for the following reaction: 4NH3(g)+5O2(g)= 4NO(g)+6H2O(g) 2. What does the above [] mean in the above equation?

42. ## life orentation

1.Identify and describe 3 environmental health that cause ill heath, crises,and or disasters within your community or any other community within South Africa and globally. 2.Critically discuss 10 ways in which the environmental health hazard can impact

43. ## Physics

A hockey puck is sliding on frictionless ice. It slams against the wall and bounces back toward the player with the same speed that it had before hitting the wall. Does the velocity of the hockey puck change in this process? Explain.

44. ## Social Studies

5.What did Europeans bring to Africa that eventually led to the ending of imperialism Specific education

45. ## Physics

Red light (n = 1.520) and violet light (n = 1.538) traveling in air are incident on a slab of crown glass. Both colors enter the glass at the same angle of refraction. The red light has an angle of incidence of 20.97°. What is the angle of incidence of

46. ## precalculus

Using data from past years, the economists for smith brothers inc determined that the revenue f the company can be modeled by the function R(x)=0.0125x^2+412x. In addition, the function C(x)=12225+0.00135x^2 models the total cost of doing business, where x

47. ## math

The students in Mr. Stevens class are having a turtle race. The race will last 2 minutes. Find the distance from the start each turtle will be at the of the race.Rex 2/3 speed (in inches per second).Whatwas the distance at the end of the race.

48. ## physics

The figure below shows two current carrying wires and the directions of the currents they carry. The wires carry the following currents: I1 = 12.5 A and I2 = 9.8 A. Wire 1 is at (0, 4.0) mm; wire 2 is at (13.3, 0) mm; point P is at (13.3, 4.0) mm.

49. ## General Chemistry II

Why is the Ksp value larger for NaNO3 and KNO3 than water?

50. ## Social Studies

Sometime around the 1880s European countries, for a variety of reasons, began to take control or colonize some area in Africa and Asia at an alarming rate. The expansion of European power in this period took many forms, but no matter the form it had greed

51. ## calculus

The demand function for a certain make of replacement cartridges for a water purifier is given by the following equation where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=-0.01x^2-0.3x+19

52. ## Physics

Which exerts more gravitational force on the baby, Mars or the obstetrician, given that Mars has a mass of 6.4 1023 kg and is 8. 1010 m from Earth?

53. ## Life orientation

Describe the negative impact (consequences) of the issue on a person's well-being and society in general?

-Steam at 100 ¡ãC is mixed with 166.4 g of ice at ¨C32.8 ¡ãC, in a thermally insulated container, to produce water at 44.6 ¡ãC. Ignore any heat absorption by the container. -Cwater = 4186. J/(kg ¡ãC) -Cice = 2090. J/(kg ¡ãC) -Lf,water = 3.33

55. ## Chemistry

The reaction for the formation of gaseous hydrogen fluoride from hydrogen and fluorine has an equilibrium constant of 1.15x10^2 at a given temperature. In a particular experiment, 3.0 mol of each component was added to a 1.5 L flask. What is the

56. ## MATH ALGEBRA

Holly has a rectangular garden that measures 12m by 14m. SHe wants to increase the area to 255m^2 by increasing the width and the length by the same amount. What will the dimensions be of the new garden ? -solving that involves quadratic equations

57. ## Chemistry

what volume does 3.01x 10^21 molecules of N2 occupy at STP

58. ## Physics

A diverging lens has a focal length of -22 cm. Find the image distance when an object is placed 41 cm from the lens.

59. ## Calculus Word Problem

A farmer wishes to build a fence for 6 adjacent rectangular pens. If there is 600 feet of fencing available, what are the dimensions of each pen that maximizes total pen area? The image looks like this: box box box box box box also: If the interior fencing

A farmer wishes to build a fence for 6 adjacent rectangular pens. If there is 600 feet of fencing available, what are the dimensions of each pen that maximizes total pen area? The image looks like this: box box box box box box also: If the interior fencing

61. ## chemistry

For reactions in solution, molar concentrations are usually used in equilibrium constant expressions (designated by K or Kc). In gases, partial pressures can also be used (designated by Kp). Equilibrium partial pressures of NOCl, NO and Cl2 in a container

62. ## physics

Calculate the force of gravity between a newborn baby of mass 4 kg and the obstetrician of mass 80 kg, who is 0.1 m from the baby.

63. ## area and volume

What is the proper name of the quadrilateral

Solve for the value of x: log5(x-2)+log8(x-4)=Log6(x-1)..For your information that 5,8 and 6 are bases not just multipliers. Thank you.

65. ## chemistry

Sodium phosphate dodecahydate reacts with barium chloride dihydrate. If Na2SO4 is an unkown contaminant of sodium phosphate dodecahydrate, how does it presence affect yeild of sodium phosphate in the exexpiriment?

66. ## Chemistry

Enough of a monoprotic acid is dissolved in water to produce a 1.47 M solution. The pH of the resulting solution is 2.64. Calculate the Ka for the acid.

67. ## physics

The kiloton, which is used to measure the energy released in an atomic explosion, is equal to 4.2 multiplied by 1012 J (approximately the energy released in the explosion of 1000 tons of TNT). Recalling that 1 kilocalorie of energy raises the temperature

68. ## precalculus

Find the tan(x), the sin (x + pi) if it is known that cos (x)=.6 and that (3pi)/2 less than x less than 2pi. Find the sine (2x), the tan (2x), and the cos (x/2) if it is known that cos (x)=.6 and that (3pi)/2 less than x less than 2pi.

69. ## chemistry

a salt shaker filled with 17.0g sodium chloride contain how many moles?

70. ## algebra

a motel clerk counts his 1\$ and 10\$ bills at the end of a day. He finds that he has a total of 57 bills having a combined monetary value of 156\$. Find the number of bills of each denominaton that he has

71. ## Physics

A baseball is thrown horizontally off a cliff with a speed of 7.3 ms-1. What is the vertical distance, to the nearest tenth of a meter, that the ball has fallen after 9.4 seconds?

72. ## math

a square has an area of 169 square centimeters. find the area of the largest circle that could be drawn inside the square. round your answer to the nearest square centimeter.

73. ## Biology

What type of cell in the central nervous system play an important role in the uptake and processing of neurotransmitters from synaptic clefts? neuron oligodendrocyte microglia endothelial cell ependymal cell

74. ## Chemistry

An unknown amount of gas occupies 30.0 L at 2.1 ATM and 298K. How many moles does the sample contain? What is the mass if the gas is helium? What is the mass if the gas is argon?

75. ## math

a cycle company make bicycles, tricycles an unicycles. Last week they made 120 more bicycles than unicycles, and 4 times as many tricycles as unicycles. If they made 75 more bicycles than tricycles, how many unicyles did they make? I don't understand how

76. ## Life orientation

Critical ways in wich hiv/aids problem impacts on the community and relevant sources to support

77. ## chemistry

nitrogen gas reacts with hydrogen gas to form ammonia. The nitrogen gas is in a closed 500.0 mL flask at 751 mm HG connected to a 1.25 L flask containing the hydrogen gas at 1.21 atm pressure. Both flasks are kept at 37C. if the stopcock is opened and the

79. ## science

a 60.0kg boy runs up the stairs of a football stadium to a height of 12m above the ground 15s.what are the work and power student has done

80. ## Religion

The days of Triduum are measured from _ _ _ _ _ _ to _ _ _ _ _ _.

81. ## Chemistry

An unknown amount of gas occupies 30.0 L at 2.1 atm and 298K. How many moles does the sample contain? What is the mass if the gas is helium? What is the mass if the gas is argon?

82. ## Math

2 root 2 sin 2t + 2 root 3 tan 2t = 0

83. ## Calculus

The unit selling price p (in dollars) and the quantity demanded x (in pairs) of a certain brand of women’s shoes are given by the demand equation p(x) = 100e^-0.0001x f or 0 _< x _< 20,000 a. Find the revenue function,R. (Hint: R(x)= x(p(x)), since the

84. ## chemistry

Sodium phosphate dodecahydate is reacts with barium chloride dihydrate.barium phosphate is lost during filtering will the percent limiting reactant be hihg or low?

85. ## math

There are 24 students in Mr.Hills class. The number of boys and number of girls are both prime numbers. There are 2 more boys then girls. How many boys and how many girls are in each class?

86. ## Physics

You are trying to photograph a bird sitting on a tree branch, but a tall hedge is blocking your view. However, as the drawing shows, a plane mirror reflects light from the bird into your camera. For what distance must you set the focus of the camera lens

87. ## Physics

A small mirror is attached to a vertical wall, and it hangs a distance of 1.81 m above the floor. The mirror is facing due east, and a ray of sunlight strikes the mirror early in the morning and then again later in the morning. The incident and reflected

88. ## math

There are 27 students in Mrs. Reeds class. The number of boys and number of girls are both composite numbers. There are 3 more girls than boys. How many girls and how many boys are in the class?

89. ## Math

Write an equation for a function that gives the values in each table, and then find the missing terms. X: -1, 0, 1, 2, 5, 7 Y: ?, 3.4, 4.4, 5.4, ?, 10.4

90. ## Physics

A microscope is focused on a mark on a table. When the mark is calculated by a glass plate of 3.00cm thick,the microscope has to be raised 1.1cm from the mark to be once more in focus.calculate the refractive index of the glass.

91. ## math

on a biology test a student answers 25 questions correct but doesnt pass. on second attempt he gets 37 correct. what is the percent of increase

92. ## POEM FOR MS.SUE

I LOVE UR ATITUDE UR SO KIND FOR ALL UR KINDESS YOU NEED A PEENY AND BY THEN YOU WILL DE A BILLONIARE THANK YOU HUN FOR EVERYTHING LOVE U FOREVER UR SECRET ADMIRER BTW I LOVE U BABE FOR UR SMARTNESS

93. ## Chemistry

If N2 is added to a balloon that contains O2 (partial pressure 450 mm Hg) and CO2 (partial pressure 150 mm Hg) to give a total pressure of 850 mm Hg, what is the partial pressure of each gas in the final mixture?

94. ## Algebra

The cumulative number of AIDS cases C in the United States from 1982 to 1994 can be modeled by C = 3200x2 + 1586, and the cumulative number of AIDS deaths D from 1982 to 1994 can be modeled by D = 1900x2 + 619. In these equations x = 0 corresponds to 1982,

95. ## Physics

Help! Calculate the water pressure at the bottom of the 110--high water tower

96. ## physics

Venus is a grade 12 learner and she claims that she can shoot a stone 50m vertically high by using a catapult.She wants to know the relationship between the height reached by the stone and the initial velocity of it.

97. ## Statistics

n inspector correctly identifies defective products 90% of the time. For the next 10 products, what is the probability that he makes fewer than 2 incorrect inspections? Note: Please report your answer with two places to the right of the decimal, rounding

98. ## Social Studies

What are some of the differences between Northern Nigeria and Southern Nigeria?

99. ## Biology

Which of the following arteries contributes to the anterior circulation of the brain? anterior inferior cerebellar artery basilar artery anterior cerebral artery vertebral arteries superior cerebellar artery

100. ## Physics

A person hums into the top of a well and finds that standing waves are established at frequencies of 150, 210, and 270 Hz. The frequency of 150 Hz is not necessarily the fundamental frequency. The speed of sound is 343 m/s. How deep is the well?

101. ## Chemistry

A buret is partially filled with NaOH solution, to a volume of 1.14 mL. A 20-mL sample of 0.1011 M HCl is titrated to a faint pink phenolphthalein endpoint. The final buret reading is 22.37 mL. What is the molartiy of the NaOH solution?

102. ## accounting

The cash payments journal used in this problem has only three special amount columns. Under what circumstances would you recommend that additional special amount columns be added to a cash payments journal?

103. ## physics

a golfer hits a golf ball which is 30m high infront of a 20m high tree. the ball just passes over the top of the tree. what was the vertical component of the initial velocity of the ball?

104. ## Science

A fixed, single pulley that is used to lift a block does which one of the following? A. doubles the force required to lift the block B. decreases the force required to lift the block C. makes the block easier to lift by changing the direction of the force

105. ## Social Studies

To help me answer these questions you need to go to Google and search European Imperialism in Africa and then go to images 1.What two European countries had the most colonized land in Africa French and British 2.What country controlled Egypt British 3.What

106. ## Science

A flask contains 0.528 g of acid and a few drops of phenolphthalein indicator dissolved in water. The buret contains 0.200 M NaOH. 32.5 mL of the NaOH is titrated into the flask. What is the molar mass of the acid (assuming it is diprotic and that the end

107. ## chemistry

Consider two glasses. Glass A has a composition of 100% SiO2. Glass B has a composition of 25% Na2O - 75% SiO2. (a) Which sample has a shorter average bond length (r)? (b)Which sample has a higher thermal expansion coefficient? (c) Which sample has a lower

108. ## General Chemistry II

Also, not sure if I did this correctly: Compute the solubility in moles/ liter for each sample titrated. 2.3 g KHTar in water. 2.3/18= .128 S= (.128/0.05)= 2.56 moles/ liter Is this correct?

109. ## physics

What is the maximum acceleration a car can undergo if the coefficient of static friction between the tires and the ground is .90

Explain how heat is transferred between a hot and a cold object by conduction — for example, a warm foot on a cold floor.

111. ## law

A crime scene investigator has located a witness at a crime scene, but he/she is uncooperative. The investigator strongly believes that this witness is fearful of something and is uncooperative. Describe the handling of witnesses and evidence. What would

112. ## social

Imagine you are a salesperson. When does offering a gift, such as basketball tickets, become a bribe rather than just a sales practice?

113. ## Biology

Which of the following cranial nerve nuclei is a branchial motor nucleus and is, therefore, found in an intermediate position in the brainstem tegmentum? oculomotor nucleus abducens nucleus dorsal motor nucleus of vagus Edinger-Westphal nucleus nucleus

114. ## Calculus

Write the expression as the logarithm of a single quantity. ln 2 + 1/2 ln(x +1)-2 ln(1+ x^(1/2))

115. ## Life orientation

Identify and describe three invironmental health hazard that cause ill health,crises and disaster within mu community or any other community within south africa and globally.

116. ## LIVING A HEALTHY LIFE

1. At what age does exercise begin to result in strength in boys and girls? A. Between ages one and two B. Between ages three and four C. Between ages five and six D. Between ages six and seven 2. Athlete’s foot is an infection caused by A. dirt. C.

117. ## Math

sec(alpha) = -4(√(5))/5 find exact values at alpha for the remaining five trig functions

118. ## chemistry

Consider two glasses. Glass A has a composition of 5% CaO - 95% B2O3. Glass B has a composition of 15% CaO - 85% B2O3. Both samples are cooled from their molten state to room temperature at rates that result in an identical glass transition temperature.

119. ## Ms. Sue LAng arts

HI im going to have like 10 questions of these and plz check my answers. thx here is the story: In Praise of Companion Animals Here is a proposal that is sure to anger some people: Everyone— yes, everyone—should have a pet. I think we should require

120. ## Physics

A small statue has a height of 3.8 cm and is placed in front of a concave mirror. The image of the statue is inverted, 1.9 cm tall, and located 14 cm away from the mirror. Find the focal length of the mirror.

121. ## GRAMMAR

CORRECT THIS SENTENCE ; I PREFER EATING FRIED FISH THAN EATING RICE.

122. ## Economics

Hi, The demand for inflatable garden gnomes is given by P = 300 – 2Q, while the supply of is P= 100 + Q/2. How many garden gnomes are traded in equilibrium? I found the answer to be Q = 80. The related question was the one I had difficulty with: Suppose

123. ## chemistry

A flask contains 0.342 g of acid and a few drops of phenolphthalein indicator dissolved in water. The buret contains 0.120 M NaOH. 20.f mL of base is needed to reach the endpoint of the titration. Assuming that the acid is monoprotic, what is the molar

124. ## chemistry

The Ka of a monoprotic weak acid is 7.25 × 10-3. What is the percent ionization of a 0.167 M solution of this acid? If the concentration is more than 1000 times greater than the Ka, then you can make an assumption that simplifies the algebra needed to

125. ## Algebra

A 180-m wire is cut into three pieces. The third piece is 20 m longer than the first. The second is two thirds as long as the first. How long is each piece?

126. ## math

I just need help with this. Write the series in sigma notation. 1/4 + 1/2+ 3/4 + 1 + 5/4 + 3/2 5 A.) 1/4 sigma N n=1 6 B.) 1/4 sigma n n=1 5 C.)sigma n/n+3 n=1 6 D.)sigma n/n+3 n=1

127. ## Biology

As should be clear from reviewing the midsagittal plane through the brain, which statement below most accurately describes the components of the ventricular system and/or the circulation of cerebrospinal fluid (CSF)? CSF flows directly from one lateral

128. ## math

The parallel sides of a trapezium are 6cm and 5cm long and 4cm apart.what is the area of the trapezium?

129. ## math

Two non-negative numbers are chosen such that their sum is 30. Find the numbers if the sum of their squares is to be a maximum. Explanation to solve this would help !

130. ## math

You lift a box that weighs 93 N a distance of 1.5 m. How much work did you do?

131. ## trig

GIVEN THE ANGEL ALFA WITH COS ALFA = -1/a. IF ALFA IN QUADRANT TWO, THE VALUE OF SIN ALFA IS....

132. ## English

How do I classify this sentence. Today, Dad ate two eggs and bacon for breakfast.

133. ## basic mathematics

if a centimeter represents 25 kilometers on a map, what is the distance in kilometers between two points that are 4.5 centimeters apart on the map?

134. ## Thermodynamics

Suppose you start with a liquid mixture of 60% nitrogen and 40% oxygen. Describe what happens as the temperature of this mixture increases. Be sure to give the temperatures and compositions at which boiling begins and ends.

135. ## Maths

If two six-sided dice are rolled, the probability that they both show the same number can be expressed as ab where a and b are coprime positive integers. What is the value of a+b?

136. ## Statistics

n inspector correctly identifies defective products 90% of the time. For the next 10 products, what is the probability that he makes fewer than 2 incorrect inspections? Note: Please report your answer with two places to the right of the decimal, rounding

137. ## Child day care management

1. At what age does exercise begin to result in strength in boys and girls? A. Between ages one and two B. Between ages three and four C. Between ages five and six D. Between ages six and seven 2. Athlete’s foot is an infection caused by A. dirt. C.

138. ## chemistry

Which of the following statements describes why ion exchange of 99% SiO2 - 1% B2O3 in a salt bath of molten postassium chloride (KCl) is not an effective way to increase the surface strength of the glass sample? a) The ion exchange works correctly, however

139. ## Chemistry

A glass of composition 85% SiO2 - 15% K2O is to be surface strengthened by ion exchange. To this end, two identical specimens approximately the size and shape of credit cards are soaked for the same amount of time at 850 ∘C. Sample A is soaked in NaCl

140. ## Chemistry

Describe how you would prepare 2.00 L of an aqueous solution having a pH of 3.60 if you had a supply of 0.100 M HCL

141. ## math

You have one board that is 7/8 foot long. You want two 1/4 foot pieces. How much will be left after you cut the two pieces?

142. ## Math

120 people are given a survey about which television shows they watch. ABC=55 NBC=30 CBS=40 ABC and CBS=10 ABC and NBC=12 NBC and CBS and ABC=5 It wants you to solve for the remaining regions of the circle (mainly what NBC+CBS equal). I know you have to

143. ## RATIO!!!!

a,b,c are positive integers such that a:b=7:9 and b:c=12:7. What is the smallest possible value of a?

144. ## computer

What combination of keys creates the following formatting characters in a word document? A.ctrl+P B.ctrl+enter C.shift+b D.shift+backspace

145. ## Macroeconomics

GDP of a country is 6000 billion. Investment is 2100 billion. Government purchase is 300 billion. The country has a trade surplus of 200 billion. How much is consumption? Was there net capital inflow or outflow? Can someone help start me off for this?

146. ## Dynamics of Rigid Bodies

The system of blocks A and B and two pulleys C and D is assembled as shown in the figure. Neglecting friction in and the mass of the pulleys, and assuming that the whole system is initially at rest, determine the acceleration of block A. The coefficient of

147. ## physics

The GoodYear blimp is kept aloft by helium gas which fills a volume of 4559m^3. It can carry a maximum load of 1176kg. How much more mass could the blimp carry if it were filled with hydrogen? Take the density of helium gas to be 0.160kg/m^3 and that of

148. ## Chemistry - DrBob Help!

Draw product for chlorination of 2methylbutane through a 2nd radical

149. ## Physics

A small mirror is attached to a vertical wall, and it hangs a distance of 1.81 m above the floor. The mirror is facing due east, and a ray of sunlight strikes the mirror early in the morning and then again later in the morning. The incident and reflected

150. ## Math

An ordered triple of real numbers (a,b,c) is called friendly, if each number is equal to the product of the other 2. How many friendly triples are there? Details and assumptions The numbers need not be equal to each other. The numbers need not to be

151. ## Health

how can a disabled wheelchair person lead a normal life? how do they cook? etc

152. ## math help again

which of the following is the smallest value a. 0.22 b. 0.2 c. 0.202 d. 0.022 e. 2.00 ??

Solve and graph: y>2x-1

154. ## heredity and reproduction

For a certain trait, Steve has the alleles Gg, and Bree has the alleles gg. Steve and Bree has six children, and all of the children have the alleles gg. Explain how this could happen.

Put brackets [ ] around the adverb in each of the following sentences. Write how if the adverbs tell how, when if the adverbs tells when, or where if the adverb tell where the action takes place. 1.Her grandmother said, “You cannot wear it now!” Please

156. ## math

ABC is a triangle with circumcenter O, obtuse angle BAC and AB

157. ## Thermodynamics

Suppose you start with a liquid mixture of 60% nitrogen and 40% oxygen. Describe what happens as the temperature of this mixture increases. Be sure to give the temperatures and compositions at which boiling begins and ends.

158. ## math

I just need help with this. Write the series in sigma notation. 1/4 + 1/2+ 3/4 + 1 + 5/4 + 3/2 5 A.) 1/4 sigma N n=1 6 B.) 1/4 sigma n n=1 5 C.)sigma n/n+3 n=1 6 D.)sigma n/n+3 n=1

159. ## Chemistry

Which of these processes will lower the glass transition temperature of a glass? 1.Increase the cooling rate 2.Decrease the cooling rate 3.Increase amount of network modifier 4.Decrease amount of network modifier 5.Quench the glass to cool the surfaces

160. ## science

1)What is the role of accessory pigments like the carotenoids? 2)What is the variable that causes pigments to separate in chromatography? How many different pigments might be identified through the separation process?

161. ## Math

A man is cutting a board that is 6 3/4 ft into pieces that are 8 inches each.He will make as many as 8 inch boards as he can.How much wood will be remaining from the original piece when the man finishes cutting?

162. ## genetics

can some one help me understand punnet squares. a woman claims that a certain man is the father of her daughter however the man denies this claim the daughter is colorblind but neither the mother nor the alleged father is colorblind who is telling the

163. ## Government secondry school gwagwalada

Consider the equation N2(g)+3NH2(g)---2NH3.what is the needed volume of nitrogen to react with 15cm3 of hydrogen?

164. ## Math

Darren is making a map of population density in Central Florida. The two isosceles triangles below show the most and least populated areas according to Darren's results. The base of the large triangle covers 96 miles and the base of the small triangle

165. ## Chemistry

1-Octene --H2PtCl6--> --NaBH4, C2H5OH, HCl(6M)--> n-Octane How many moles of hydrogen are used to convert the precatalyst to the catalyst? What volume of H2 gas does this correspond to at STP?

166. ## Math (Number Theory )

An ordered triple of real numbers (a,b,c) is called friendly, if each number is equal to the product of the other 2. How many friendly triples are there? Details and assumptions The numbers need not be equal to each other. The numbers need not to be

167. ## Physics

Suppose you wish to make a solenoid whose self-inductance is 1.8 mH. The inductor is to have a cross-sectional area of 1.60 10-3 m2 and a length of 0.049 m. How many turns of wire are needed? turns

168. ## Life Orientation

Provide recommendations on how to address water pollution.

169. ## math

We have four apples I eat one what fraction shows how many apples are left

170. ## Chem

Which of the following are correct statements? (Could be as many as 4) 1. One mole of gas contains 22.4 representative particles 2. Standard pressure is 100 mm Hg 3. One mole of a gas must have the same volume as one mole of any other gas at STP 4. Gas

171. ## Help math!!

15 students took a science test. the average score was 88.0. later in the day a sixteenth student took the same test and scored a 92. the teacher recalculated the class average using all 16 of the scares. by how much will the class average have increased?

172. ## physics

a 40 kg student is riding a bicycle to school. the bicycle has a mass of 12 kg. the area that each tire makes contact with the road can be approximated by a rectangle of dimensions 6 cm x 4 cm. what is the pressure that each tire exerts on the road? give

173. ## physics

a 40 kg student is riding a bicycle to school. the bicycle has a mass of 12 kg. the area that each tire makes contact with the road can be approximated by a rectangle of dimensions 6 cm x 4 cm. what is the pressure that each tire exerts on the road? give

174. ## Dynamics of Rigid Bodies

A body of mass “m” has an initial velocity “v0” directed up a plane that is at an inclination angle  to the horizontal. The coefficient of sliding friction between the mass and the plane is μ. What distance “s” will the body slide up the

175. ## chemistry

calculate the solubility of SrSO4 in A: pure water B: 0.045 M Sr(NO3)2 C: 0.05 M NaCl D: 0.016 M ZnCl2

176. ## chemistry

In which of the following ways would you change the glass sample to make the ion exchange more efficient? a)Change the composition of the glass to increase the proportion of B2O3. b)Change the composition of the glass to add Na2O, Li2O, or MgO. c)Change

177. ## chemistry

Which of the following statements describes why ion exchange of 99% SiO2 - 1% B2O3 in a salt bath of molten postassium chloride (KCl) is not an effective way to increase the surface strength of the glass sample? a)The ion exchange works correctly, however

178. ## Math

In the first quarter of a football game ,a quarterback threw for 25 yds and was sacked for -36 yds.What was the quarterback's total yardage for the first quarter?

179. ## Geography

How many degrees are there between the equator and the tropic of cancer? I think the answer is 23.5, is that correct? Thanks

180. ## physics

What is the average speed of a car that travels 210 m in 25 second, then speeds up to 0.47 km in 20 second and then slows down to 150 m in 0.50 minute?

181. ## MATH

THE AREA OF A RECTANGUALR GARDEN IS 240 SQ FT. IF THE LENGTH OF THE GARDEN IS 20 FT.,WHAT IS ITS WIDTH?

182. ## history

Why was monolithic soviet communism an important idea for the reason why US supported Diem's regime in south vietnam from 1954-64? Give 4 reasons. I already have some but i just want some more ideas for brainstorming.

183. ## algebra 2 (permutations & combinations)

from a standard deck of 52 cards, how many different five-card hands can be drawn?

184. ## Math

How do I write 37,000,000 in scientific notation

185. ## Chemistry 1301

How many g of NaOH are in 10 ml 0.1 M solution? How do you find this out, what are the steps?

186. ## English

Posted by rfvv on Sunday, April 7, 2013 at 11:03pm. Pansori is a kind of Korean folk play. 1. Bill is doing pansory at the school talent show. 2. Bill is presenting pansory at the school talent show. 3. Bill is acting out pansory at the school talent show.

187. ## Math

Kurt cut pizzas into wedges measuring 40 degrees. If each person eats one piece of pizza How many people could he feed with 2 pizzas

188. ## math

Martha sees 9 animals in the pet store..4rabbits an 5 cats...what fraction shows how many cats

189. ## science

If a population is not in genetic equilibrium, what must be occurring in the population

190. ## Health

how does a disabled wheelchair person cook? use the bathroom? take a shower? and stuff a normal person does in thier everyday life

191. ## Maths

Two players each flip a fair coin. The probability that they get the same result can be expressed as ab where a and b are coprime positive integers. What is the value of a+b?

192. ## MATH

THE AREA OF A RECTANGUALR GARDEN IS 240 SQ FT. IF THE LENGTH OF THE GARDEN IS 240 FT.,WHAT IS ITS WIDTH?

193. ## MAth

6. The practice court at the park is a rectangle. Its width is exactly twice its length. The area of the practice field is 450 ft2. What are the length and width of the rectangle?

194. ## biology

Which one of the following statements would most clearly refer to a person's genotype?

195. ## chemistry

Which of these processes will lower the glass transition temperature of a glass? a) Increase the cooling rate b) Decrease the cooling rate c) Increase amount of network modifier d) Decrease amount of network modifier e) Quench the glass to cool the

196. ## algebra

A certain region is losing about 12 million acres of rain forest each year. A. Find a linear function f that calculates the change in acres of rain forest in millions in x years. B. Find f(8) and interpret the results

197. ## LAng Arts

Here is a proposal that is sure to anger some people: Everyone— yes, everyone—should have a pet. I think we should require that everyone get a pet or else present a convincing reason why they can’t have one. There are almost too many arguments in

198. ## language arts

she needed a hook a line that would make the audience feel singers isolation. Q. what is the meaning of the word isolation as it is used in this sentence A. being alone b. being angry c. being restless d. being confused i don't understand so can You Give

199. ## language arts

Melissa was not going to let Randy own the whole chorus . Q . the sentence means that Melissa ? A. wont let randy decide who will record the song . B. doesnt want randy to write the whole chorus c. wont let randy take credit for writing the whole song d

200. ## GRAMMAR

whats the error in this sentence;please try and always do your best

201. ## Math (Percentage)

Chet bought a rug that cost \$280. He had a coupon for a 10% discount. 1. How much money did he save with the discount? 2. How much did he pay for the rug?

202. ## Algebra

If f(x)= ln x, g(x) = e^3x, and h(x) = x^7, find the following... a) (fog)(x) What is the domain of fog? b) (gof)(x) What is the domain of gof? c)(foh) What is the domain of foh?

203. ## chemistry

Which of these processes will lower the glass transition temperature of a glass? 1 - Increase the cooling rate 2 - Decrease the cooling rate 3 - Increase amount of network modifier 4 - Decrease amount of network modifier 5 - Quench the glass to cool the

204. ## Science 1 question

Choose and describe 2 interesting uses of electricity. I chose an electric car but im having trouble choosing the other one. Please give me good examples so I could choose. Thanks :)

205. ## language

Analogies 1. war:peace::soldier:_____________ marine, captain, conscientious objector, sailor 2. piccolo:flute::violin:_______ cello, saxaphone, trumpet, bass drum 3. strengthen:build up::atrophy:_______ circulatory system, death,muscles, waste away

206. ## Math

Find the absolute extrema of f(x)= (2x-1)e^(-x) on [0, 00)

207. ## philosophy

I am to present an account of at least one metaphysical account of reality from the assigned readings. I am to discuss Plato, Aristole or the Cartesian method. Make sure that you include an account of reality and truth and discuss(and/or whether)human

208. ## Computer Science

A memory in 64bit architecture has size 1,024Mbytes (note that 1,024 = 2^10). 1)How many 64-bit words is its capacity? How much is this capacity in bits? How much is the same capacity in bytes? 2)How many cells does this memory have? If we want to be able

209. ## Chemistry

A gaseous mixture contains 436.0 Torr of H2(g), 341.5 Torr of N2(g), and 79.7 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.

210. ## history

who had the idea of making the tomb of the unknown soldiers.

211. ## Math112

Which of these fraction of these are the larges. a. 13,579 + 1/2468 b. 13,579 - 1/2468 c. 13,579 * 1/2468 d. 13,579/2468 2468

213. ## Sciece

When you perform work on an object, you decrease the energy of the object. true false I think it is False..?

214. ## algebra

the local high school is setting up square-shaped lunch tables in the cafeteria. each table has an area of 12x^3-4x^2 square feet. if sqrt 3x+1 tables are put end to ed to form a banquet table, how long will the banquet table be? assume x>1/3 part 1: use

215. ## LA

10. How did the 1860 election contribute to the breakup of the Union? A;by electing a president many believed would not protect Southern rights B;by electing a pro-slavery president whom the North would not tolerate C;by allowing freed slaves to vote D;by

216. ## English

Thank you! I left out these sentences on Owen's life. Thank you. 1) Wilfred Owen enlisted as a soldier in 1915. During his first mission in France, he spent some time in hospital to recover from shell shock. 2) There, he met poet Siefried Sassoon !@#\$%^&ad

217. ## math

a storage crate has the dimensions : 12ft * 6ft *5ft. how many cube-shaped boxes measuring 8 inches in length could be stacked completely within the cube??

218. ## math

a storage crate has the dimensions : 12ft * 6ft *5ft. how many cube-shaped boxes measuring 8 inches in length could be stacked completely within the cube??

219. ## Physics

A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.65 V and a current of 3.4 A are induced in the coil. The wire is the re-formed into a single-turn square coil, which

220. ## Math

The sum of 5y/6 and 4(3/y+2y) y=7

221. ## chemistry

Please mark below all of the statments that correctly describe the physical properties of glass. a)Glasses do not have slip systems. b)Glasses consist of both covalent and ionic bonding. c)Glasses are brittle at room temperature. d)Glasses are amorphous

222. ## chemistry

A glass of composition 85% SiO2 - 15% K2O is to be surface strengthened by ion exchange. To this end, two identical specimens approximately the size and shape of credit cards are soaked for the same amount of time at 850 C. Sample A is soaked in NaCl and

223. ## chemistry

Which of these processes will lower the glass transition temperature of a glass? a)Increase the cooling rate b)Decrease the cooling rate c)Increase amount of network modifier d)Decrease amount of network modifier e)Quench the glass to cool the surfaces

224. ## chemistry

what is the mass of LiF is needed to produce 2.5 L of a .30 M solution

225. ## math

i have a math problem i cant figure out.it is about input and out put algebraic expression. INPUT P-24 18 14 12 08 OUTPUT N-10 07 05 04 02

226. ## LAng Arts

Here is a proposal that is sure to anger some people: Everyone— yes, everyone—should have a pet. I think we should require that everyone get a pet or else present a convincing reason why they can’t have one. There are almost too many arguments in

227. ## math

i have a math problem i cant figure out.it is about input and out put algebraic expression. INPUT P-24 18 14 12 08 OUTPUT N-10 07 05 04 02

228. ## Chemisry

Please mark below all of the statments that correctly describe the physical properties of glass: 1.Glasses do not have slip systems. 2.Glasses consist of both covalent and ionic bonding. 3.Glasses are brittle at room temperature. 4.Glasses are amorphous

229. ## math

The following rational function describes blood concentration of a certain drug taken via IV over time: f(x)=x+1/x Find: a.the horizontal or oblique asymptote(s), if any, b.the vertical asymptote(s),if any, c. describe their possible meanings. Can somebody

230. ## MATH

THE AREA OF A RECTANGUALR GARDEN IS 240 SQ FT. IF THE LENGTH OF THE GARDEN IS 20 FT.,WHAT IS ITS WIDTH?

231. ## english

find the simple suject of each sentence Please describe the music

232. ## Reiny: Set Theory

School counselor posted the following data after having had 150 students sign up for electives: Art - 65 students Band - 70 students Theatre - 50 students Not all students signed up for an elective.Show the data using Venn Diagrams. Shown with problem:

233. ## art

This type of ad uses a celebrity to endorse the product. slogan testimonial icon parody I think it is icon...?

234. ## Geometry

2x^2-9x-5=0 Is it possible to combine 2x squared with 9x? Not sure how to tackle solving this one.

235. ## Social Studies

What is the significance of Andrew Jackson?

236. ## Math

6. The practice court at the park is a rectangle. Its width is exactly twice its length. The area of the practice field is 450 ft2. What are the length and width of the rectangle?

237. ## physics

a 40 kg student is riding a bicycle to school. the bicycle has a mass of 12 kg. the area that each tire makes contact with the road can be approximated by a rectangle of dimensions 6 cm x 4 cm. what is the pressure that each tire exerts on the road? give

238. ## Chemistry

How many liters are in .005 moles?

7=2-5m;m=

240. ## Seth

graph this equation:6x^2+18x-24=0

241. ## Dynamics of Rigid Bodies

A 20 kg box is released from rest at point A. It travels down a slope of 35 degrees. If the coefficient of friction is 30%, what will be the velocity of the box 10 meters from point A.

242. ## Math

A car wheel has a diameter of 0.4 meters. Work out how many full turns the wheel makes when the car travels a kilometer

243. ## english

I'm told by my snail that he will not get dressed He say that he's not feeling well It's not that he won't wear a coat or a vest, he wont even put on his shell. He's still in his bed as he lets out a yawn, I tell him i think it's okay to wait till tomorrow

244. ## algebra

how many integers, x, for which x/2, x/3 and x/5 is also an integer can be found between 1 and 500? help me!!

245. ## precalculus

Simplify the expression (sin^2(t)-2sin(t)+1)/(sin(t)-1)

246. ## Physics

An object that is 32 cm in front of a convex mirror has an image located 17 cm behind the mirror. How far behind the mirror is the image located when the object is 24 cm in front of the mirror?

247. ## Math

Each costume requires 2 2/3(two and twothirds) of fabric.Mrs Joy has 18 1/2yds of fabric.How many costumes can she complete.

248. ## physics

The auroral zone is defined by the last field line from the Earth that returns to the Earth. If the field of the earth extends no further than 10RE in the sunward direction, at what angle (in degrees) in the picture above does the last field line that

249. ## Science

What are some of the effects of the sun's radiation on the earth's atmosphere including the green house effect, conduction, convection and radiation?

250. ## math

An economy car rented in Florida from XYZ Rental on a weekly basis costs \$95 per week. Extra days cost \$24 per day until the day rate exceeds the weekly rate, in which the weekly rate applies. Also, any part of the day used counts as a full day. Find t he

251. ## MATH

THE AREA OF A RECTANGUALR GARDEN IS 240 SQ FT. IF THE LENGTH OF THE GARDEN IS 20 FT.,WHAT IS ITS WIDTH?

252. ## Pre-Calculus

I'm having trouble understanding how to do complex fractions.. My book doesn't explain it very well.. 12. (x+3/12)/(4x-5/15) 14. (2/x^2 + 1/x)/(4/x^2 - 1/x) 16. (1/y + 3/y^2)/(y + 27/y^2) If you could please explain how to begin the process I would

253. ## technology

i need help in adobe flash cs3 i have created a flash project and a flash file actionscript 2.0 and i don't know where to save the file. is it inside the flash project? or save it separately and link it later on i tried multiple website but they didn't

254. ## science

Assuming that a population is mating randomly, no mutation or gene flow is occurring, calculate the frequencies of the two alleles for the five generations shown in the table below. Generaton #AA #Aa #aa p q Initial (P1) 42 46 12 0.65 0.35 F1 40 45 15 (?)

255. ## HISTORY

The majority of states that did not ratify the Equal Rights Amendment were located in the A. Southeast. B. Northeast. C. Midwest. D. West.

256. ## GRAMMAR

CORRECT THIS SENTENCE; Do not accept me to help that troublesome child.

257. ## math

there was a problem on the test 89__89 with a line on top of both numbers and there was one like this also 94___95 with a line on top of the 95. I am not sure if i need to round

258. ## math

Please show the steps and explain how to do this as well. 3√8 · 2√5

259. ## GRAMMAR

CORRECT SENTENCE ; SHE REPLIED THAT SHE DID NOT AGREE WITH THE PLAN.

260. ## physics

A boat is traveling on a bearing of 25 degrees East of North at a speed of 4 knots (a knot is 1.852 km/h). After traveling for 3 hours, the boats heading is changed to due South and it travels for an additional 2 hours at 5 knots. Using a Vector diagram,

261. ## MATHS

WHAT FIVE ODD NUMBERS ADDS UP TO 14

262. ## social studies

Why did we go through all of the trouble of landing on the moon in the first place? Why didn’t we use the money we spent going to the moon on improving the conditions of poor people here in the United States?

263. ## Algebra

Use the graph to find the solutions of the given equation -X power 2 +36 = 0 graph is parabola downward open

264. ## triple digit digit product

What is the smallest 3-digit positive number whose product of the individual digits is still a 3-digit number

265. ## Physics

Calculate the force of gravity between a human child (mass = 38 kg) and the planet Mars (mass = 6.4 1023 kg), when Mars is at its closest to Earth (distance = 8. 1010 m).

266. ## MATH

cHIANG HAD 12 APPLES. SHE GAVE 5 OF HER FRIENDS 1/6 OF THE APPLES. HOW MANY DID EACH FRIEND GET.

267. ## maths

What is the sum of all integer values of n such that 3n+15/(n−1)(n−5) is also an integer

268. ## trig

Solve rounding to 2 decimal places. 9cosx + 4cos(2x) + 1 = 0 over 0° ≤ x < 360° Thanks to anyone that can help! I'm totally stumped.

269. ## math

how many integers, x, for which x/2, x/3 and x/5 is also an integer can be found between 1 and 500? help me!!

270. ## music

i have to speak a hindi poem onany one of the- ''life and workings of Dr. B. R. Ambedkar'' ''vaisakhi'' ''the foundation of khalsa panth'' In poetry competition. So please help.

271. ## algebra

How to multiple 250 x .25

272. ## math

a storage crate has the dimensions : 12ft * 6ft *5ft. how many cube-shaped boxes measuring 8 inches in length could be stacked completely within the cube??

273. ## chemistry

A glass of composition 85% SiO2 - 15% K2O is to be surface strengthened by ion exchange. To this end, two identical specimens approximately the size and shape of credit cards are soaked for the same amount of time at 850 ∘C. Sample A is soaked in NaCl

274. ## LA

jerry came to school incognito like superman in his clark kent glasses question; as used in the passage what does incogonito mean ? a. strength b. in a cape c. dressed formally D. disguised i pic C or D am i cerrect?

275. ## pre calculus

Given the following polynomial; f(x)=(x-2)^3 Find: a. the zeros and the multiplicity of each b. where the graph crosses or touches the x-axis c. number of turning points d. end behavior I have no clue what I am doing. pleeeaaase help!!!

276. ## english

Which one of the following sentences contains an unnecessary word

277. ## philosophy

I am to identify a belief that I or someone in my community believe to be true. I was considering writing about the existence of God. Do you guys think it is a good topic or do you think I should choose something else.

278. ## Geography

What is the best way to answer the following question? Where is the Sea of Okhotsk located? I know that is runs along the coastline of Russia, but I'm not sure what else I should add. thanks

279. ## Algebra 1

How exactly do you find/solve a Perfect Square Trinomials and factoring them?

280. ## Calculus

Find the second derivative of the function f(x)= t^2e^(-2t)

281. ## math

weight of car A is 15 lb less than the weight of two B cars. The truck weighs 2155 lb more than car A. What is the curb weight of each vehicle?

282. ## math algebra 1

Please show the steps and explain how to do this as well. 3√8 · 2√5

283. ## english

finding subject There were many new inventions in the 1920s.

284. ## Life Orientation

Critically discuss 8 ways in which hiv/aids impact within a community in South Africa

285. ## art

This type of ad implies the product will make you beautiful. slogan testimonial icon rich-and-famous I think it is rich and famous...not sure though...?

286. ## Consider the functions

Consider the functions f(x)= 5x+4/x+3(This is a fraction) and g(x)= 3x-4/5-x(This is a fraction) a)Find f(g(x)) b)Find g(f(x)) c)Determine whether the functions f and g are inverses of each other.

287. ## math

Some years in the 20th century have 4 different odd digits. How many of those years have the sum of the digits greater than 20?

288. ## Physics

what is the illumination if a lamp of 504 lm lights a distance 4.0 m below it?

289. ## English

Adding Hypens, dashes, and/or parentheses to the following... The playoff games you should com-e to one--if you get the chance are always very thrilling.

290. ## Calculus

find g''(x) if g(x) = xe^x I have g' as e^x(x+1) then g'' as e^x(1) or just e^x am I missing the mark?

291. ## math

i have a math problem i cant figure out.it is about input and out put algebraic expression. INPUT P-24 18 14 12 08 OUTPUT N-10 07 05 04 02

292. ## FACTORIAL PRODUCT(ALGEBRA)

Let N=1!⋅2!⋅3!⋅4!…9!⋅10!. Let 2^k be the largest power of 2 that divides N. What is the value of k?

293. ## Science

You are in a car going 70 km/h and another car passes you going in the opposite direction at 70 km/h. Do both cars have the same velocity?

294. ## social studies

what are some areas in africa where genocide is occurring?

295. ## math

how many integers, x, for which x/2, x/3 and x/5 is also an integer can be found between 1 and 500? help me!!

296. ## Science

How does friction slow down a moving object — for example, a soccer ball?

297. ## math

Find the coefficient of x^3Y^2z^2 in (x+y+z)^7

298. ## GRAMMAR

WHAT IS THE VERB FOR CLEARNESS BRAVERY DISASTER AND CAUTION

299. ## Help math!!

how many integers, x, for which x/2, x/3 and x/5 is also an integer can be found between 1 and 500? help me!!

300. ## trig

i need to know how to do evaerything because i am stupid

301. ## Chemistry

What quantity of heat is required to flow into 1.50 g of water at 18.0 degrees Celsius that is heated in an electric kettle to 70.0 degrees Celsius?

302. ## Math

Can someone please help me! A regular 6sided die is rolled three times. Find the probability of each event: a) Three 6s in a row b) 5,1,even c) Odd, greater than 2,5 Show all work I have been looking at examples and trying all night and I can't figure this

303. ## Math

the cost of 24 concrete blocks is\$50.88 calculate the cost of 42 blocks

37×52

305. ## Math

If an area of a parallelogram is 8x+2 with a height of 4. What is the length of the base?

306. ## Math

Use implicit differentiation to dind dy/dx lny - x ln x = -1

307. ## math-7th grade algebra 1

Please show the steps and explain how to do this as well. 3√8 · 2√5

308. ## PHYSICS

Bricks have a thickness of 12 cm, if an external wall of the house measures 10 mx 15m, calculate the rate of heat exchange through this wall if the inside temperature is 200C and the outside temperature is 50C.

309. ## GRAMMAR

CORRECT;SAM DEVICED THE PLAN WHICH WE PUT INTOACTION

310. ## ms.sue

All of the children in our family,anya is the oldest and wises

311. ## math

bob and jim had a total of 90 marbles. bob had half a dozen more than jim. how many marbles did jim have.

312. ## ms.sue

i am sorry i need the help can you correct the rest of them for me i feel pestfull correct;Everyone agreed that sally and i would attend the conference.

Find the coordinates by solving and graphing the equation : -x^2-x+30=0

314. ## Trig

Solve exactly over 0 ≤ θ < 2π secx + tanx = 1

315. ## Math

2 root 2 sin 2t + 2 root 3 tan 2t = 0

316. ## L.O

5 ways in which the human or enviromental problem impacts on the community.

317. ## algebra 1

find the quotient 6x^4+6x^3+8x^2 --------------- 2x^2

318. ## Life orientation

10-15 lines how to overcome the lifestyle disease or behaviour (cancer)

319. ## math

there was a problem on the test that had 89___89 but there was a line on top of both numbers. what does it mean also they had 95___96 with the line on top aswell and i don't know if i need to round them

320. ## GRAMMAR

correct this sentence ; One must do things to please himself.

321. ## math

15 students took a science test. the average score was 88.0. later in the day a sixteenth student took the same test and scored a 92. the teacher recalculated the class average using all 16 of the scares. by how much will the class average have increased?