# Questions Asked onFebruary 28, 2012

Quilt squares are cut on the diagonal to form triangular quilt pieces. The hypotenuse of the resulting triangles is 18 inches long. What is the side length of each piece? 9 inches 9ã3 inches 18ã2 inches 9ã2 inches Thank You I Really Appeciate it!

2. ## chemistry

In this equation is Fe(OH)3 and NaCL a solid liquid gas or aqueous? FeCl3 (aq) + 3NaOH(aq)=Fe(OH)3+NaCl

Viola drives 200 meters up a hill that makes an angle of 9° with the horizontal. To the nearest tenth of a meter, what horizontal distance has she covered? 1,262.8 m 200.4 m 197.5 m 31.3 m Thank you so much! ^_^

4. ## Chemistry

how do u complete these questions? 2HCI(aq)+Pb(NO3)2(aq)---> 2HI(aq)+K2SO3(s)---> Pb(NO3)2(aq)+2KCI(aq)---> Ba(NO3)2(aq)+Na2SO4(aq)---> K2CO3(aq)+Ba(NO3)2(aq)---> HCI(aq)+AgNO3(aq)--->

5. ## Chemistry

Indicate how each of the following would affect the value of the absorbance (too high, too low, or not effect) of the indicated solution. I really need help. I do not understand these questions! This is from a chemistry activity to determine the unknown

6. ## CHEMISTRY II

How would the calculated value of the molar mass of an unknown acid be affected (higher, lower, or no change) if the following occurs? (a) The pH meter was incorrectly calibrated to read lower than the actual pH. (b) During the titration, several drops of

7. ## fisika

cahaya dengan panjang gelombang600 nm jatuh pada sebuah logam yang mempunyai fungsi kerja 2 eV. panjang gelombang ambangnya adalah

Calculate the position of the center of mass of the following pairs of objects. Use acoordinate system where the origin is at the center of the more massive object. Give youranswer not in meters but as a fraction of the radius as requested. Get data from

9. ## Chemistry

You are preparing 500 mL of a 0.300 M acetate buffer at pH 4.60 using only sodium acetate, 3.00 M HCl, 3.00 M NaOH, and water. Calculate the quantities needed for each of the following steps in the buffer preparation. 1. Add sodium acetate to ~400 mL of

10. ## physics

A cyclist enters a curve of 30 m radius at a speed of 12 m s-1. He applies the brakes and decreases his speed at a constant rate of 0.5 m s-2. Calculate the cyclist’s centripetal (radial) [3 marks] and tangential [15 marks] accelerations when he is

11. ## Physics

3. A 0.200 kg air-track glider moving at 1.20 m/s bumps into a 0.600 kg glider at rest. a.) Find the total kinetic energy after collision if the collision is elastic. .144J I got that one. b.) Find the total kinetic energy after collision if the collision

12. ## physical science

In raising a 5000-N piano with a pulley system, the movers note that, for every 2m of rope pulled down, the piano rises 0.3m. Ideally, show that the force required to lift the piano is 500-N.

13. ## Chemistry

H3C6H5O7(aq) + 3 NaHCO3(aq) ¨ Na3C6H5O7(aq) + 3 H2O(l) + 3 CO2(g) How do you go about calculating theoretical yield of carbon dioxide from 1.00g of sodium bicarbonate andthe percentage yield

14. ## Trig

Use a calculator to find θ to the nearest tenth of a degree, if 0° < θ < 360° and csc(θ)=1.4307 with θ in QII θ=?

15. ## English

Dame Van Winkle and Rip are stereotyped characters that have been found in literature- the nagging wife and the henpecked husband. Can you identify these character types in current literature and in popular movies and tv shows? From the short story "Rip

16. ## chemistry

A Ca(OH)2 solution has a pH of 8.0. [H3O+] = 1.0 x 10^-8 and [OH-] = 1.0 x 10^-6 Determine [Ca(OH)2].

17. ## consumer math

2. Use the monthly payment table and this table to answer the following questions. Loan APR Years Monthly Payment Total Payment Interest \$6,700 13.5% 5 A B C \$8,720 12.5% 15 D E F \$20,230 11.5% 20 G H I Find A. (Points : 1) 3. Find B. (Points : 1) 4. Find

18. ## chemistry

what is the effects of NH3(aq) and HCl(aq) on the CuSO4 or NiCl2 solution

19. ## english

From Brazil to Peru the number of amazon birds in South America is large and varied. Which capitalized word is used as an adjective?

20. ## trig

solve for x log4 64+ log2 2 ________________ =x log3 81

21. ## accounting

Goods such as milk, bread, and cheese would probably be costed using the _______ method of inventory costing.

22. ## Math

Explain how \$0.60 can be shown two different ways using only three coins each time

23. ## Physics 161

A cat dozes on a stationary merry-go-round, at a radius of 6.9 m from the center of the ride. The operator turns on the ride and brings it up to its proper turning rate of one complete rotation every 7.3 s. What is the least coefficient of static friction

24. ## trig

in this right trianlge ABC, m

25. ## math

The time is 6:10 Is the hour hand closer to the 6 or 7 and why?

26. ## Math for the middle school and elementary teacher

3 red balls, 4 green balls, and 5 yellow balls are in a bag. If 2 balls are drawn randomly (without replacement) find the probability that the balls are different colors. I got 47/66 that the balls are different colors...is that right?

27. ## college algebra

A piece of pottery is removed from a kiln and allowed to cool in a controlled environment. The temperature (in degrees Fahrenheit) of the pottery after it is removed from the kiln is shown for various times (in minutes) in the following table. Time(min)

28. ## Physics

Two 8 cm long thin glass rods uniformly charged to +10 nC are placed side by side, 4.0 cm apart. What are the electric field strengths E1 to E3 at distances 1.0 cm, 2.0 cm, and 3.0 cm to the right of the rod on the left along the line connecting the

29. ## chemistry

a gas sample is collected at 16 degrees c and 0.982 atm. if the sample has a mass of 7.40 g and a volume of 3.96 l, find the volume of the gas at stp and the molar mass?

directions- write each sentence. replace the underline word or word with the correct pronoun. 1- sports and games have many different rules. (underline the word is in this sencetence - sports and games) 2- basketball players run, pass, and shoot.

15x-5=7+12x

32. ## Physics

A bag of blood with a density of 1050 kg/m3 is raised 1.37 m higher than the level of a patient’s arm. How much greater is the blood pressure at the patient’s arm than it would be if the bag were at the same height as the arm? Assume there is no change

33. ## physics

jeritex mass is 60kg. if he climbs up the flight of stairs 13 meters high in 20 seconds, what is his power output?

34. ## maths

if the seventh term of an AP is zero,prove that its 27th term is five times its eleventh term of class 10

35. ## Physics

If a thunderstorm is heard 5 seconds later. How far away did the lightning strike?

36. ## chemistry

A sample of gas has an initial volume of 14.7L at a pressure of 1.02 atm. If the sample is compressed to a volume of 10.2L, what will its pressure be?

37. ## chemistry

CH4 + 2 O2 = CO2 + H2O Carbon is being oxidized Oxygen is being reduced

38. ## Biology

Our most potent weapon in the fight against viruses is: 1.Antibiotics and sulfa drugs 2.Vaccinations 3.Gene therapy 4.Sulfa drugs 5.Antibiotics I don't know if it is 2 or 5. I am thinking more 5 but then I think about 1 also. Someone please help.

39. ## english

On Monday Mornings, the anxious birds watch rather closely (rather closely is underlined) for the increasingly (increasingly is underlined) rare visits by the rest of the flock. Which underlined adverb describes another adverb?

40. ## physics

A boy of mass 23 kg sits on a seesaw 1.5 m from the axis of rotation. At what distance from the axis of rotation must his friend, whose mass is 21 kg, be positioned to balance the seesaw? [6 marks]

41. ## physics

A ski trail makes a vertical descent of 77 m. A novice skier, unable to control his speed, skis down this trail and is lucky enough not to hit any trees. If the skier is moving at 17 m/s at the bottom of the trail, calculate the total work done by friction

42. ## Chemistry

A 0.25 g sample of lime (CaO) is dissolved in enough water to make 1487 mL of solution. Calculate the pH of the solution

43. ## consumer math

The following describes the status of the O'Daniel's budget. A) It is in surplus B) It is in deficit C) It is balanced

44. ## college algebra

A magazine company had a profit of \$98,000 per year when it had 32,000 subscribers. When it obtained 35,000 subscribers, it had a profit of \$117,500. Assume that the profit P is a linear function of the number of subscribers s. a.) Find the function P b.)

45. ## arithmetic

In an AP the first term is 2 and the sum of the first five terms is one fourth of the sum of the next five terms. Show that the 20th term is -112.

46. ## Geometry

Calculate surface area and the volume of a box that is 3m by 2m by 7.5m Show me how to get the answer please.

47. ## physical science

a bicyclist accelerates at 0.89m/s squared during a 5.0 s interval. What is the change in speed of the bicyclist and the bicycle?

48. ## Chemistry

Write balanced equations that describe the following reactions. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.) a) the dissociation of perchloric acid in water b) the dissociation of propanoic acid

49. ## Chemistry

A solution is prepared by adding 50.3 mL of concentrated hydrochloric acid and 16.6 mL of concentrated nitric acid to 300 mL of water. More water is added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution. [Hint:

50. ## Physics

Calculate the position of the center of mass of the following pairs of objects. Use acoordinate system where the origin is at the center of the more massive object. Give youranswer not in meters but as a fraction of the radius as requested. Get data from

51. ## Algebra 2

The numbers 1 through 9 are written on slips of paper and placed into a hat. Two slips are randomly drawn. If the first slip of paper is not returned to the hat after it is drawn, find the probability of getting a six and then a three?

52. ## american gov.

Which of the following was not a key political thinker during the Age of Enlightenment? A. Jean-Jacques Rousseau B. Thomas Paine C. John Calvin D. Voltaire

53. ## math

A scale model racing car is 11 inches long, 3 inches wide, and 2 inches tall. The actual racing car is show at the right. How wide is the actual racing car?

54. ## physics

As part of a training schedule a weightlifter pushes a heavy metal block along the floor. The lifter applies a force of 850 N downwards on the block at an angle of 65° to the vertical (25° to the horizontal). The weightlifter pushes the block forwards 4

55. ## college algebra

A magazine company had a profit of \$98,000 per year when it had 32,000 subscribers. When it obtained 35,000 subscribers, it had a profit of \$117,500. Assume that the profit P is a linear function of the number of subscribers s. a.) Find the function P b.)

56. ## MATH

A student is solving the equation 81x – 1 = 3x + 2. Step 1: 81x – 1 = 3x + 2 Step 2: (34)x – 1 = 3x + 2 Step 3: 34x – 4 = 3x + 2 Which is the next step? Possible answers 4x 4 = (x + 2) x 1 = x + 2 4x 4 = x + 2 4(x 1) = 3(x + 2)

Given triangle ABC with vertices A(-6, -2), B(2,8), and C(6, -2). Line AB has midpoint D, line BC has midpoint E, and line AC has midpoint F. Which of the following statements is true? 1. ADEF is only a parallelogram 2. ADEF is a rhombus 3. ADEF is a

58. ## Physics HELP!!!

A certain satellite has a kinetic energy of 7.5 billion joules at perigee (closest to Earth) and 3.5 billion joules at apogee (farthest from Earth). As the satellite travels from apogee to perigee, how much work does the gravitational force do on it? Does

59. ## 1 geometry question

The coordinates of the vertices of CDE are C(1, 4), D(3, 6), and E(7, 4). If the triangle is reflected over the line y = 3, what are the coordinates of the image of D? (3, –6) (3, –3) (3, 0) (3, 9) i have no clue

60. ## college algebra

A rectangle is bounded by the x-and y- axes and the graph of y = -1/2x + 4. a.) Find the area of the rectangle as a function of x. b.) Complete the following table x area 1 2 4 6 7 c.) What is the domain of this function?

61. ## chemistry

What is reduced and what is oxidized in the reaction? 2Mg+O2=2MgO Oxygen is oxidized Mg is reduced

62. ## math

A traffic engineer plans to estimate the average number of cars that pass through an intersection each day. Based on previous studies the standard deviation is believed to be 52 cars. She wants to estimate the mean to within ± 10 cars with 90 percent

63. ## Geometry

What is the measure of the complement of a 67 degree angle? The measure of the vertex angle of an isosceles triangle is 58. What is the measure of one of the base angles?

64. ## Life orientation

What according to the basic conditions of employment act applies with regard to the contraventions that youve identified

65. ## Algebra helpp i am going to fail

The length of a side of a square is 3x+2 . What is the area of this square in terms of x ?

66. ## Chemistry

What mass of HNO3 is present in 248.6 mL of a nitric acid solution having a pH = 5.04?

67. ## accounting

Albright Company purchased as a long-term investment \$500,000 of Benton Corporation 10-year 9% bond present entries to record the following selected transactions: (a.) Purchased bonds for \$475,000.

68. ## Physical Science

A boat exerts a force of 417N pulling a water skier who is 64kg at rest. The skier speed is 15m/s. over what distance was the force exerted?

69. ## Chem (Thermodynamics)

Calculate the temperature (in ºC) to which silver ore, Ag2O, must be heated to spontaneously decompose the ore to oxygen gas and solid silver metal at standard state. (ΔHºf of Ag2O(s) = –31.05 kJ/mol; Sº values: Ag(s), 42.55 J/mol•K; O2(g), 205.1

70. ## Social Studies

What continent is located south of Europe in Medieval Europe?

71. ## Chemistry

I need help with finding the theoretical yield of Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g). So far I have 24.305 + 37.4688 = 61.7738 g based on the weight of MgCl2 + H2, but I'm not exactly sure what to do or if I've even started it properly. Also, if you

72. ## chemistry

when water is boiled in a pot, it bubbles. Has a chemical reaction occurred? Explain your answer.

73. ## Chemistry

Then calculate the inital ClO^- concencentrations for 1st, 2nd, and 3rd reactions. Calculate [ClO^-] in a 6% bleach solution. A 6% bleach solution contains 6 grams of NaClO per 100 grams bleach. The density of 6% bleach is 1.07g/mL. Chemical reaction: Blue

74. ## Calculus

What is the limit as x approaches 0 of [(tanx)^2]/x?

75. ## physics

what is audible range of frequencies of sound in humans?calculate the corresponding range of audible wavelengths.

76. ## Finance

Committing a fraud because the employee feels that it will be easy to do is indicative of which part of the fraud triangle?

77. ## physics

A 0.50-kg block, starting at rest, slides down a 30.0° incline with kinetic friction coefficient 0.30 (the figure below). After sliding 84 cm down the incline, it slides across a frictionless horizontal surface and encounters a spring (k = 33 N/m). (a)

78. ## physics

An athlete is supporting a weight of 200N in his hand with his forearm at a right angle to his biceps. Assuming his biceps are in the vertical plane, the axis of rotation of the forearm is 3 cm from the elbow and 25 cm from the centre of gravity of the

79. ## physics

During a throw an athlete exerts a net average torque of 100 Nm on a discus about its axis of spin. The mass of the discus is 2 kg and its radius of gyration about its spin axis is 12 cm. If the discus was not spinning at the beginning of the throw and the

80. ## Math 11 Surface area, Volume and Capacity

A cylindrical tin can has a radius of 4.5cm and a height of 5 cm (a)What is the surface area of the can (b)What is its volume? (c)What is the cans capacity

81. ## Physical science

What is the force in newtons acting on a 5.7 kg package of nails that falls off a roof and is on its way to the ground?

82. ## Algebra 2

The artist, R. Locklen Jones, selects three paintings from a collection of six to display in a row. How many different arrangements of the display are possible?

83. ## Chem 1A

Calculate the [OH ‾ ], [H+], and the pH of 0.16 M solutions of each of the following amines. (a) triethylamine [(C2H5)3N, Kb = 4.0 10-4] (b) hydroxylamine (HONH2, Kb = 1.1 10-8)

84. ## math

Marita orders 12 yards od material to make banners. if she needs 1 foot for each banner, how many banners can she make?

85. ## ELA

We have to find 20 collective nouns in a magazine. So far are all of these collective? 1.partners 2.Birds 3.Family 4.Amphibians 5.Crustaceans 6.builders 7.Immigrants 8.Animals 9.Grades 10.Services 11.packages 12.lodges 13.Members 14.Branches

86. ## Geometry

The sides of a triangle measure 9 , 15 , and 18 . If the shortest side of a similar triangle measures 6 , find the length of the longest side of this triangle . a . 5 b . 10 c. 12 d . 15

87. ## accounting

New technology, like the latest cell phones and HDTV, would probably be costed using the

88. ## college algebra

A rectangle is bounded by the x-and y- axes and the graph of y = -1/2x + 4. a.) Find the area of the rectangle as a function of x. b.) Complete the following table x area 1 2 4 6 7 c.) What is the domain of this function?

I have to calculate the concentration of I2 produced (# of moles of I2 produced / L) based on the stoichiometric ratio in the following equation. 2S2O3^2- + I2 -> 2I^- + S4O6^2- So I got 6.6e-3 L*min for the amount of I2 produced. Now I have to calculate

90. ## chemistry

balance:H2(g)+S2(g)------->H2S(G)+heat A.) how would the equilibrium be affected give the following: - increase in temperature - increase in hydrogen concentration - increase in reaction container of volume B.) is equilibrium homogeneus or heterogeneus?

91. ## Math

1. The manager of a bottle shop makes 25% profit on the cost price of all bottles of wine sold in the shop. She charges \$12 for a bottle of Open View reisling. A hotel room service charged \$30 for a similar bottle of Open View reisling. a) How much profit

92. ## math

the time t that it takes for a salesman to drive a certain distance d varies inversely as the average speed r . it takes the salesman 4.75 h to travel between two cities at 60 mi/h . how long would the drive take ?

93. ## physics

Two blocks with masses m1 = 1.10 kg and m2 = 3.10 kg are connected by a massless string, as shown in the Figure (the figure shows m1 on top of a box and m2 hanging off the side of the box). They are released from rest. The coefficent of kinetic friction

94. ## physics

Two blocks with masses m1 = 1.10 kg and m2 = 3.10 kg are connected by a massless string, as shown in the Figure (the figure shows m1 on top of a box and m2 hanging off the side of the box). They are released from rest. The coefficent of kinetic friction

95. ## physics

A 38.3 kg girl and a 55.4 kg boy are on the surface of a frozen lake, 10.0 m apart. Using a rope, the girl exerts a horizontal 5.50 N force on the boy, pulling him toward her. Calculate the magnitude of the girl's acceleration.

96. ## math

There are 24 counters. How many counters could you add without having to regroup? Why?

97. ## ALGEBRA

Could you explain how to factor the following trinomials : x2 + bx + c and ax2 + bx + c. Is there more than one way to factor this? Could you answer this question using both words and mathematical notation.

98. ## accounting

When a merchandiser sells on account, which of the following is not needed to record the transaction?

99. ## chemistry

hydrogen sulfide + sodium hydroxide to lithium hydroxide + sodium sulfide. what is wrong with the equation?

100. ## Calculus

lim (x^3-1)/(x^3+2x^2y+xy^2-x^2-2xy-y^2) (x,y)->(1,0) alright i approached this at y=0. and got the limit as 3. where else can i approach this from to see if the limit really exist which im hoping it doesn't. i tried y=x-1 and that was a mess and i also

101. ## Physics

Two point charges, +Q and -Q of mass m, are placed on the ends of a massless rod of length L, which is fixed to a table by a pin through its center. If the apparatus is then subjected to a uniform electric field E parallel to the table and perpendicular to

102. ## Math

Tap A was turned on to fill a rectangular tank of 50 cm by 40 cm by 28 cm with water at a rate of 6 liters per minute. After 2 minutes, Tap B was turned on to drain water from the tank at a rate of 2 liters per minute. 6 minutes after Tap B was turned on,

103. ## Math

Use this equation to estimate typing speed, S=w/5-2e, where S is the accurate typing speed, w is the number of words typed in 5 minutes, and e is the number of errors. Choose the letter for the best answer. One of the qualifications for a job is a typing

104. ## geometry

Macy wants to jog around Triangle Park. On a scale map, the park has a perimeter of 11 inches. The scale of the map is 1 inch : 100 yards. What is the perimeter of the actual park?

105. ## english

I need help with my one paragraph (8 to 12 sentences in length) assignment. My biggest problem I believe is my topic sentence (which must be the first sentence of the paragraph). Also I need help with transitioning between one of my sentences. The

106. ## physics

A horizontal force of magnitude F = 116 N is used to push a box of mass m = 9 kg from rest a distance d = 13 m? 1)How much work is done by the force on the box? WF = 2) How much work is done on the box by the gravitational force during this same

107. ## algebra

The diameter of an electric cable is normally distributed, with a mean of 0.8 inch and a standard deviation of 0.01 inch. What is the probability that the diameter will exceed 0.81 inch? (Give the answer to four decimal places.)

108. ## elect and magn

a postive charge of q is located at x=0 and y=-a, and a negative charge -q is located at the point x=0 and y=+a. A.) derive an expression for the potential V at points on the y-axis as a function of the coordinate y. take V to be zero at an infinite

109. ## Finance

You recently paid \$31.50 for a share of Breaking Benjamin stock. Your required rate of return is 13% and you expect the company to increase dividends at a constant rate or 2.5% for the forseeable future. What was the most recent dividend of Breaking

110. ## Physics

Calculate the net charge on a substance con- sisting of a combination of 7.2 × 1013 protons and 4.8 × 1013 electrons. Answer in units of C

111. ## physics

A comet experiences uniform acceleration from 60 m/s to 183 m/s in 10.0. what is the rate of acceleration a. 6.0 m/s^2 b. 12.3 m/s^2 c. 18.3 m/s^2 d. 24.3 m/s^2

112. ## Geometry

if the measures of the angles of a triangle are in the ratio 1:3:5 , the number of degrees in the measure of the smallest angle is a. 10 b. 20 c. 60 d. 180

113. ## geometry

The roof of a building is shaped like a square pyramid, with a base of 18m by 18m. If the slant height of the roof is 12m and roofing costs 5.75m2, how much will it cost for roofing material?

Use logarithms to solve the given equation. (Round the answer to four decimal places.) 6(1.02^3x + 1) = 11 How do i find the answer after 1.03^3x +1 = (11/6) Do i put a log on 1.03 or do I do something else Thank you.

115. ## Algebra

Can someone please help me with math problem and explain to me step by step how to solve it so I will know how solve other problems like this Thank you in advance Multiply and then, if possible, simplify by factoring /7x /21y

116. ## physics

The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 6.60 m, measured from its tip to the center of the circle. Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a point

117. ## principles of physics

7. Very ideally, and very strictly speaking, the falling leaves in autumn make the world spin a bit ____________________. A) All of these. B) faster. C) slower. D) off center and erratic. E) smoother

118. ## Physics

Two point charges, +Q and -Q of mass m, are placed on the ends of a massless rod of length L, which is fixed to a table by a pin through its center. If the apparatus is then subjected to a uniform electric field E parallel to the table and perpendicular to

119. ## American Gov't

Which is NOT a factor that reinforces America's two-party system? 1.)Broad ideological consensus limits the appeal of radical parties. 2.)The winner-take-all system makes it harder for third parties to gain popularity. 3.)The two-party system was preferred

120. ## accounting

Meranda Corporation purchases \$3,500 of inventory on account from Ashley Corporation. The journal entry to record this purchase for Meranda under a perpetual inventory system is

121. ## statistics

For a normal distribution with µ = 200 and ó = 50, what X values form the boundaries for the middle 60% of the distribution?

122. ## phscal sicence

If an astronaut in full gear has a weight of 1150 N on Earth, how much will the astronaut weigh on the Moon?

123. ## chemistry

How many grams of sodium chloride, NaCl (fw 58.44), are required to prepare exactly 200 mL of a solution that is 600 ppm in sodium ions?

124. ## English

anyone read story "the sound of hollyhocks"?

125. ## Science

Na subscript 2SO subscript 4 + CaCl subscript 2 produces CaSO subscript 4 + NaCl Please help me balance this equation and show your work

Unfortunately that is the entire problem.. Find and classify all local minima, local max, and saddle points of the function F(x,y)= -3x^2y-3xy^2+36xy There should be 3 saddle points and a maxima for sure! Please help me get the points. I can't do these

127. ## geometry

A pile of gravel is conical in shape. If the diameter is approximately 6.8m and the height is 2.8m, what is the volume of gravel in the pile.

128. ## physics

What is the length of a box in which the difference between an electron's first and second allowed energies is 1.30×10−19 ?

129. ## Calculus: Implicit

so i suppose to find slope. i have trouble this problem. my math book is not really clear. Find the slope of the tangent line to the curve √(3x+2y)+√(4xy)=11.6 at the point (6,2). √(3x+2y) is the square root(3x+2y) √(4xy)is the square root 4xy.

130. ## physics

A cylindrical object of volume V is immersed completely in a liquid.  is the density of the object and L is the density of the liquid. Write the expression for the buoyant force on the object, using these terms.

131. ## Math for the middle school and elementary teacher

A prof. teaches 2 calc. classes. The first class has 25 students and their mean on the 1st test was an 82. The 2nd class has 15 students and their mean on the same test was a 74. What is the mean on this test if the prof. combines the score for both

132. ## Finance

A proposed project has expected cash flows of \$72,000 per year for 5 years. If the project has an initial cost of \$400,000, what is the payback period (in years)?

133. ## physics

what is audible range of frequencies of sound in humans?calculate the corresponding range of audible wavelengths.

134. ## math

the time t that it takes for a salesman to drive a certain distance d varies inversely as the average speed r . it takes the salesman 4.75 h to travel between two cities at 60 mi/h . how long would the drive take ?

135. ## history

I have an assignment about the American Revolutionary War. I have to Select three major periods of the Revolutionary War to use as points of comparison showing how the war was experienced in the northern theater with how it was experienced in the southern

136. ## geometry

The height of the figure shown at the right is 20 inches, and the width of the figure is 10 inches. All the line segments are either vertical or horizontal. Calculate the perimeter of this figure. a.30 inches b.50 inches c.60 inches d.Cannot be determined

137. ## physics

A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the figure. The pole is not attached directly to the wall, so the coefficient of static friction, μs,between the wall and the pole

138. ## Calculus Find max and min and saddle

Find and classify all local min and maxima and saddle points of the function f(x,y)=/3yx^2-3xy^2+36xy I know there are 3 saddle points and one maxima. This is what I got: D=FxxFyy-(Fxy)^2 = 36xy-36(x+y-6)^2 But how do i solve for zero?? Im lost on this

i have two problems that i need to write an inequality for. a) One third of a number, decreased by thirty six, is at most twenty two. Find the number. b) A school's Spanish club is welling bumper stickers. They bought 100 for \$55, and have to give 15 cents

140. ## English

Could you please check these sentences, please. Thank you. 1. Connect the sentences with a relative pronoun and make any necessary changes. 2. Write in brackets the relative pronouns that can be omitted. 3. Complete the sentences with a suitable word. (8

141. ## Chemistry(Please check, thank you!!)

For my rate of reaction experiment I have to answer the question "why did we ask you to measure the room termperature and temperature of reaction solutions". For the experiment we used 5 flasks and we put one of them in an ice bath at 6-10 degrees C. My

142. ## Physics

What are the strength and direction of the electric field at the position indicated by the dot in the diagram below, in which d = 4.9 cm, q = 11 nC, the positive x-axis points to the right, and the positive y-axis points up? Give your answer in each of the

143. ## physics

A golf ball threw by a friend from a window of her apartment collides with a rock that you throw at the same moment at x=44.07m and y=13.63 m, and t=2.56 s. If the ball was dropped from a height of h=45.78 m, determine the initial velocity of the

144. ## western

9.11 g of CuBr2 contains how many bromide (Br-) ions?

145. ## physics

A uniform rigid pole of length L and mass M is to be supported from a vertical wall in a horizontal position, as shown in the figure. The pole is not attached directly to the wall, so the coefficient of static friction, μs,between the wall and the pole

146. ## physics

The drawing below shows two laboratory carts (each has a mass of 1.0 kg) X and Y in contact with a compressed exploder spring between them. The mass on cart Y is 2.33 kg, distance A is 6 cm, distance B is 9 cm. What mass must be placed on cart X, such that

147. ## algebra

(1) Explain the words relation and function. Include in your explanation how the meanings of the two words differ. Give a real-world example of a relation that is not a function. Is it possible to give an example of a function that is not a relation? If

148. ## algebra

(2) The temperature F, in degrees Fahrenheit, that corresponds to a temperature C, in degrees Celsius, is given by the equation F = (9/5)C + 32. If you graph this equation for 0 £ C £ 100, you will notice that the point whose coordinates are (45, 113) is

149. ## algebra

least common denominator for these two rational expressions. ( / stands for fraction bar and the ^ means it's squared. i don't understand these at all. a/ a^2-36 2a/a^2+5a-6

150. ## Computer Tech

Name 2 things that a computer virus might do if it gets into your computer.

151. ## Accounting

A company's current ratio increased from 1.23 to 1.45. What does this mean?

152. ## chemistry

2CO2(G)--->2CO(g)+O2(g), deltaH=566kj what is Kc and state whether the reaction favors products or reactants? A.)[CO2]=1.5M, [CO]=1.2M, [O2]=0.05M B.)[CO2]=8.3M, [CO]=0.05M, [O2]=0.50M C.)[CO2]=0.05M, [CO]=0.75M, [O2]=0.07M

153. ## math

Carl have a budget of \$290. Explain how you would find amount Carl spent on books.

154. ## US HISTORY

Could someone help me conclude an essay on prohibition. I am writing: even though there were laws and movements for prohibition, it actually didn't work. PLEASE HELPPP!!!

155. ## Chemistry

Determine the Concentration of OH^-1 and pH of a solution that is 0.140 M F^-1. I did F- +H20 ---> HF + H20 but idk what to solve from there....

156. ## stats

Web Results For: the value of the z-score in a hypothesis test is influenced by a vareity of factors. Assuming other variables are held constant, explain how the value of z is influenced by increasing the difference between the sample mean and the original

157. ## math

susan is making punch for her birthday party. the recipe makes 2 quarts. if she makes four times the recipe, how many gallons of punch will susan have?

158. ## science physics

When all forces acting on an object are combined together, what's the result known as

159. ## PHYSICS

A toy gun launches a small plastic sphere using a spring. The spring has a spring constanct of 20 J/M^2 and the plastic sphere has a mass of 25 grams. Before launch x initial is -10cm velocity initial is 0 m/s After launch x final is o cm In order to

160. ## PHYSICS

A toy gun launches a small plastic sphere using a spring. The spring has a spring constanct of 20 J/M^2 and the plastic sphere has a mass of 25 grams. Before launch x initial is -10cm velocity initial is 0 m/s After launch x final is o cm Apply the law of

161. ## Math

Charlene has 2 5/8 yards of fabric. The curtain she is making requires 3 3/4 yards. How much more fabric does she need?

How are the numbers of electors for each state decided? 1.)Each state gets one elector. My answer2.)Each state gets two electors. 3.)Each state gets as many electors as it has senators. 4.)Each state gets as many electors as it has members of Congress.

163. ## math

James spent 62 % of high school budget on books. In degrees what measurement would that be on a circle graph? A. 62% B. 162% C. 177% D. 223%

164. ## college algebra

A triangle is bounded by the x-and y-axes and must pass through P(2,2) a.) find the area of the triangle as a function of x (Hint: let C be the point (0,2) and D be the point (2,0). Use the fact that ACP and PDB are similar triangles.) b.) What is the

165. ## physics

A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 620 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right sides of

166. ## physics

A box slides across a frictionless floor with an initial speed v = 1.8 m/s. It encounters a rough region where? If instead the strip is only 0.413265306122449 m long, with what speed does the box leave the strip? vf =

167. ## Geometry

If the measures of the angles of a triangle are in the ratio 1:3:5 , what is the measure in degrees of the smallest angle ? a. 10 b. 20 c. 60 d. 180 thanks , and would be greatly appreciated if answered ASAP .

168. ## college algebra

A triangle is bounded by the x-and y-axes and must pass through P(2,2) a.) find the area of the triangle as a function of x (Hint: let C be the point (0,2) and D be the point (2,0). Use the fact that ACP and PDB are similar triangles.) b.) What is the

169. ## college algebra

A piece of pottery is removed from a kiln and allowed to cool in a controlled environment. The temperature (in degrees Fahrenheit) of the pottery after it is removed from the kiln is shown for various times (in minutes) in the following table. Time(min)

170. ## Calculus

Let f(x)= (3x^2-2x+1)/(x-1). What are the types of asymptotes of f(x)? What are the equations of all the asymptotes of f(x)? The types of asymptote are vertical and oblique? x=1? Is there something wrong I did

171. ## math

A basketball is dropped from a height and it rebounds. Each time the basketball rebounds to a height of 200 cenitmeters. What height will the ball bounce on the third rebounds?

172. ## psychology statistics

Submit your answers to the following questions using the ANOVA source table below. The table depicts a two-way ANOVA in which gender has two groups (male and female), marital status has three groups (married, single never married, divorced), and the means

173. ## Calculus

Let f(x)=x^2-8x+16 and g(x) x^2-16. For what values of x is f(x)/g(x) increasing? Explain plz~

174. ## Econnomics

Historically, officials from 23 northeastern colleges with selective admissions policies and high tuition met each spring to compare financial aid packages for more than 10,000 common applicants. The meetings, known as “Overlap”, were designed to

175. ## Math - just need answer checked

Miss B. built a vegetable garden in her backyard. Her rectangular garden was 11m by 9m. Every morning she would notice carrots missing from her garden! In order to keep Bugs Bunny from eating all her carrots, she built a fence surrounding them. This fence

176. ## grammar

Mary realized she had forgotten her note book; she had left it in her friend’s truck.

177. ## arithmetic

If 10 times the 10 th term of an AP is equal to 15 times its 15 th term, show that its25 th term is zero.

178. ## introduction to psychology

describe how you might design a community health campaign. In your description, consider both risky behaviors and health promoting behaviors.

179. ## Persuasive topics.

What are some issues in Kalamazoo, Michigan that I can do a persuasive speech on. Issues that are 2010 or greater?

Use lagrange multipliers to find the max and min values of the func f(x,y)=xy subject to the constraint 1=(x^2)/8 + (y^2)/2 I know how to set up.. i got y=Lx/4 and x=Ly now im lost!!! Please help with detail because im an idiot.

181. ## Chemistry

An air bubble is present in the stopcock at the start of the titration but is passed out during the titration. Would this error make your calculated molarity of zinc ions higher or lower than the true value? Thanks!

182. ## Chemisty

Calculate the mass of water in grams that could be produced from the reaction of 10.00mL 0.4122M hydrochloric acid and 35.00mL 0.1738M sodium hydroxide solution. Identify the limiting reactant.

183. ## physics

A 9.2V battery is connected in series with a 33mH inductor, a 190 Ohms resistor, and an open switch. A)What is the current in the circuit 0.140 ms after the switch is closed? in milli amps b)How much energy is stored in the inductor at this time? in micro

184. ## math

What is the missing dimension in this volume statement? 24cm3(3 squared)=3cm x____ cm x 4cm

185. ## Calculus AP need help!

i still understand this problem If x^2/25 +y^2/49=1 and y(3)=5.6000, find y'(3) by implicit differentiation.

186. ## physics

a race car's velocity increases from 4 m/s to 36 m/s over a 4s time interval, its average acceleration would be 10 m/s2 true or false ?

187. ## geometry

a ladder is placed against the side of a building at an angle of 50 degree. the ladder's base is 10ft away from the base of the building. How long is the ladder?

188. ## math

A block of wood is in the form of a cube whose edge is 7 m. How many small rectangular blocks of size 25 cm*8 cm*5 cm* can be cut from the block, if there is no wastage of wood?

189. ## math

in the formula d=rt the time t varies inversely with the rate r. a student running at 5 mph runs one lap around the school campus in 8 ninutes. if a second student takes 10 minutes to run one lap around the school campus, how fast is she running?

190. ## Cal3 - to Lucy

See: http://www.jiskha.com/display.cgi?id=1330465911 for response to previous question on maximum/minimum.

191. ## physics

what is the momentum of a free falling object that has a mass of 85 lbs. and falls for 20 seconds before it hits

Calculate the cost to the pharmacy as AWP less 13%. AWP \$84.07 per 100 tablets and dispense 30 tablets

193. ## Taxes

In the US, we have a progressive tax system, which means higher incomes are taxed at a higher rate. But capital gains are not - they are taxed at a flat rate of 15%. This is an example of an institution, a formal "payment" rule, that affects the "tax

194. ## Algebra

the population P (in 1000s) of a town can be modeled by P = 2 absolute value t-5 +6, where t = 0 represent 1990. During which two years does the town have a population of 12,000?

195. ## Algebra

I have two equations that I need to solve using the elimination method the system is x = y = 9 and 2x - y = -3

196. ## meters/cm^2

3m/sec*2m/sec= 6 m^2/sec^2 ??? Is this right??

197. ## chemistry

The density of ethyl ether is 0.713g/ml would 536.8 g of this anesthetic fit into a 750.0ml flask?explain

198. ## statistics

800 people where asked what sport they liked 120 said football what is this as a fraction in its lowest form ?

199. ## chemistry

The mole fraction of an aqueous solution of magnesium chlorate is 0.371. Calculate the molarity (in mol/L) of the magnesium chlorate solution, if the density of the solution is 1.39 g mL-1.

200. ## Math

1 mintue 25 seconds converted into seconds. I know there are 60 minutes in an hour and seconds 60 in a minute. Am I just dividing by 60??

201. ## world history

False or true The historine Herodotus wrote about the persian Wars. I think its true ?

202. ## COLLEGE CALCULUS. HELP!

1. If f(x)=tan3x, find f'(x) and f'(3). 2. let f(x)=3cos(cosx), find f'(x). i got stuck. i don't know im doing it right way, f'(x)=tan3x*1

203. ## chemistry

the equivalence amount of citric acid for 2.00 g of sodium bicarbonate is 1.52 g.

204. ## Physics

If an astronaut in full gear has a weight of 1150 N on Earth, how much will the astronaut weigh on the Moon?

205. ## Chemistry

How many moles of sodium chloride (salt) can be made from 6 moles of chlorine?

206. ## physics

A 1370 kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 49.5 m?

207. ## US HISTORY

clincher sentence on prohibition era. I want the reader to feel that they want to read more

209. ## math

mystery number it is a number greater than 3,000 and less than 3,200

210. ## L.A.

Hi,we are learning about the african americans in america. What would an example of racism like with the white only signs should i do?

please help me write an inequality for this paragraph. Brandon and Rayna have \$40 to spent at the concert and would like to purchase some souvenir programs for friends who cannot attend. They are able to buy pr0grams at \$8 each, but want to keep \$10 for

212. ## PHYSICS

A toy gun launches a small plastic sphere using a spring. The spring has a spring constanct of 20 J/M^2 and the plastic sphere has a mass of 25 grams. Before launch x initial is -10cm velocity initial is 0 m/s After launch x final is o cm Identify the

213. ## statistics

A test was given out to a class of 20 students. The highest possible score to get is 30. The mean of the tests came out to 26. One student was caught cheating and got 20 points removed from their test. what is the new mean. 28,25,24,22 ?

214. ## chemistry

How do we calculate the Xi column when trying to find the molecular weight for polymer. I am given several ranges and means for each

215. ## Math-Are my answers correct?

An anagram is a rearrangement of all the letters in a word. Example: page--->gape, pgea.. a) Find the number of 7 letter anagrams possible for the letters in GUITARS. I did 7!=5040...is that correct? b) Find the probability of randomly choosing an anagram

216. ## Computer Tech

What is a computer virus?

217. ## math

Ms.lee class had to guess how many jelly beans were in a jar. The clues were that exactly half were red ,and that exactly one third were blue.Based on the information provided ,which of the following is not a reasonable number of jelly beans that can be in

218. ## accounting

If current assets decrease and current liabilities increase, the current ratio

219. ## Calculus

Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line: y=x, y=x^(1/2); about x=2

220. ## calculus

lim (x^3-1)/(x^3+2x^2y+xy^2-x^2-2xy-y^2) (x,y)->(1,0) my question is can you approach (1,0) with y=x and does that change the the limit to lim f(x,x) (x,x)->(1,1) in which case i get 3/4 as the limit. and if this is not how i go about doing it can you

221. ## chemistry

balance: SO2(g)+O2(g)------->SO3(g) the concentration of SO2 and O2 are determined to be [0.06] and [0.03] if the following reaction has a Kc of 3.6x10^2, what is the concentration of SO3???? any work would be much appreciated thank you!!

222. ## algebra

A 5"x7" picture is enlarged to 8"x10". By what percent di its area increase?

223. ## Geometry

Find the equation of the line passing through the given points (1,5) (2,7) please show work

224. ## Calculus 2

how do we know if the curve theta = pi/2 is a circle, or semicircle, or spiral? I've tried to change the curve to x and y, but both sides of the equation are the same, and tan(pi/2)=infinity.

225. ## Chemistry

Calculate the pH of an aqueous solution containing 3.8 10-2 M HCl, 1.0 10-2 M H2SO4, and 3.3 10-2 M HCN.

226. ## math

change 64 square meter into square millimeter. give your answer in standard form

227. ## English

Hello How to explain to students the difference between may, might and could when it comes to possibility?

228. ## Mathematics, Math

During a period of acute shortage of raw materials, the prices of some manufactured goods were raised by 25%. After the shortage was over, prices were lowered by 15%. If the original price of an article was \$56, find its price after the shortage was over.

229. ## COMPOSITION AND COMMUNICATION I

Write a 150- to 200-word paragraph to explain how purpose, audience, tone, and content would impact the following topic: What do you hope to accomplish COM 155? Be sure to use the three components of a good paragraph covered in this week’s readings. In

230. ## Finance

Which of the following has more interest risk? Why? A. Bond A with a 10% Coupon and a YTM of 10% which matures in 5 years. B. Bond B with a 10% Coupon and a YTM of 10% which matures in 11 years. C.) A share of Preferred Stock that pays \$10 dividend in

231. ## physics

ursula and her 2 year old daughter unice descend a flight of stairs 10 m high, if ursula carries unice and their combined mass is 75 kg and reach the ground in 8 seconds. compute for a.) work done in going down b.) power developed by ursula in going down

232. ## english

how to write a composition

233. ## strayer

You and three (3) of your friends were in the same advance placement high school chemistry class in high school. All four (4) of you decided to take the same chemistry class together at the local university along with 21 other students. On the first day of

234. ## physics

In the graph above, what is the correct discription of any location to the left of zero ? a.negative displacement b.negative distance c.negative position d. negative change of description

235. ## Math

The coordinates of the vertices of CDE are C(1, 4), D(3, 6), and E(7, 4). If the triangle is reflected over the line y = 3, what are the coordinates of the image of D? (3, –6) (3, –3) (3, 0) (3, 9)

236. ## math for the middle school and elementary teacher

Which one of the following situations a permutation? a) the number of ways 10 people can be lined up in a line for basketball tickets. b) The number of possible four member bowling teams from a family of six siblings. c) The number of ways to choose a

237. ## statistics

The mean (μ) of the scale is 98 and the standard deviation (σ) is 13. Assuming that the scores are normally distributed, what is the PROBABILITY that a score falls below 88?

Miss B. built a vegetable garden in her backyard. Her rectangular garden was 11m by 9m. Every morning she would notice carrots missing from her garden! In order to keep Bugs Bunny from eating all her carrots, she built a fence surrounding them. This fence

239. ## PHYSICS

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. 1/2 m v^2= mgh v= sqrt

240. ## Algebra 2

Two cards are randomly drawn from a standard deck without replacing the card after the first draw. Find the probability of drawing a spade followed by a heart?

241. ## Algebra 2

The red spinner has six equal sectors labeled with numbers 1 through 6. The blue spinner has four equal sectors labeled with letters A, B, C, and D. Find the probability of spinning the two spinners and getting a 5 with a B?

242. ## Algebra 2

A bag contains five red marbles and three blue marbles. In how many different ways can two red marbles be drawn if the first marble is not returned to the bag before the second marble is drawn?

243. ## US HISTORY

Anyone have a good informational website on temperance movement during the prohibition era.

244. ## algebra 2

Graph the function f(x) = –3x^3 + 9x^2 – 2x + 3 using graphing technology and describe the end behavior

245. ## Math

Sally runs 2.8 m/s. John runs 1.9 m/s. if John has a 30 m head start. How far before Sally catches John?

using the chain rule find the min and max points and their values of the composite function defined by z=x^2+y^2, x=sin(2t), y=cos(t) This is what Ive got so far... dz/dt= 2x*dx/dt+2y*dy/dt =4sin2tcos2t-2sintcost I understand the steps of computing the max

247. ## math

The value of x in the factor tree is a)30, b)150, c)100, d)50

248. ## math

how many line segments are in the word FAME?

249. ## Calculus

What is the limit as x approaches 0 of [(tanx)^2]/x?

250. ## Mathematics, Math

During a period of acute shortage of raw materials, the prices of some manufactured goods were raised by 25%. After the shortage was over, prices were lowered by 15%. If the original price of an article was \$56, find its price after the shortage was over.

For the problems below, I have the answers written but from questions d-i, I don't understand how they got the answer. I tried doing it and somehow I messed up with the formula with 3/2 and 5/2 so please show work on how they got the answers for d-i. In

252. ## helllp me please (algebra1)

The length of a sude of a square is 3x+2. What is the area of this square in terms of x

253. ## marketing

Why marketing is describe as a process

254. ## Math.

Can u check these: 56% of 144 = 80.64 81% Of 63. = 51.03 43% of 92. = 39.56 3%. Of 200 = 6 17%. Of 360 = 61.2 22% of 84 = 18.48

255. ## physics

a race car's velocity increases from 4 m/s time interval, its average acceleration would be 10 m/s2 ? true or false ?

256. ## HELP!!!

I'm in 6th grade and I'm doingt his weird project about how Egyptians stuffed pharaoh's nostrils and stuff. So, the question is: WHAT MATERIAL WAS USED TO PLUG THE EYE SOCKETS???? I know it's gross!

I need to find the order of a reaction with respect to the reactants. I set up my equation like this: 5.33e-2 M / 2.66e-2M = 1.03e-2 / 1.93e-3 I did the concentrations equal to the rates. I am just not sure what the units for rate should be. 2.00 = 5.33^m

258. ## Chemistry

how to find the pH of 0.10 M H2SO4 ??

259. ## PHYSICS

A 25,000 kilogram train is traveling down a track at 20 meters per second. A cow wanders onto the tracks 75 meters ahead of the train, causing the conductor to slam on the brakes. The rain skids to a stop. If the brakes can provide 62,500 Newtons of

260. ## Calculus

How exactly do you determine dy / dx ? Maybe for this one: y = 2 / 3(x)^3

261. ## geometry

A ball gas a radius of 56mm (a)Calculate the surface area (b)What is the volume of the sphere

262. ## Algebra

In 1920, the record for a race was 46.9 seconds. In 1940 it was 46.5 seconds. Let R(t)= the record in the race and t= the number of years since 1920. a) Find a linear function that fits data. b)Predict the records for 2003 and 2006. c) Year when record

263. ## COLLEGE CALCULUS. HELP!

i don't know how to start this problem. i don't like cos and sin. im so confuse. 1.f(x)=sin(sin(x)), find f'(x) 2.f(x)= 4sin^4x, find f'(x). this problem i couldn't find it in my math book. i never see it before. because of sin exponent 4 -->sin^4

264. ## math

What is the sales tax of an item worth \$9.75 when the tax rate is 3%

265. ## physics

how fast can a 125N force accelarate a12 Kg. object?

266. ## World History

What changes in leisure and cultural activities took place 1800s? Thanks -MC

267. ## math

A snow cone has {1} line of symmetry. A slide of a figure along a straight line- my answer: translation an object moved to the right and up- my answer: diagonal translation are these correct?? I would appreciate any and all help Thank You.

268. ## Law & Ethics for Medical Careers

Why do organizations representing health care practitioners develop and maintain codes of ethics?

269. ## chemistry

balance:Al(s)+H2O(g)--->Al2O3(s)+H2(g) what is the correct equilibrium expression?

270. ## physics

a person is sled-riding down a hill that is 15.0 ft high. starting at the top with a speed of 10.0 ft/s, the sled reaches the bottom with a speed of 25.0 ft/s. (A) determine whether mechanical energy has been conserved. (B) why might mechanical energy not

271. ## ALGEBRA

Can someone explain the following to me? 1.How do you factor the difference of two squares? 2.How do you factor the perfect square trinomial? 3.How do you factor the sum and difference of two cubes? I am so lost.

272. ## algebra

Please check for me and tell me how to correct, thank you. Mary wants to put a walk( 10 ft wide)all the way around her house. house Length=60 ft width 45 ft A. write a polynomial that represents the total area of the house and walk total area of walk and

273. ## Math

Need some help on a word problem. It has a storage chest. The dimensions for the top of the chest are 28 in wide, 46 in long, and 1 in high. The bottom of the chest is 28 in wide, 46 in long, and 17 in high. The word problem is Cynthia packs the chest with

274. ## Math word problem

You participate. In a 50 mi walk You walk 40% of the distance the first day. And 1/3 of the remaining distance on the second day. Bohr. Many more miles do you have to walk? Explain I got : need 13.33 mi more to walk 20 miles 1/3 = 16.67 mi Total. 36.67 50

275. ## math

The area of a rectangular photo is 80 square inches. After reducing its dimensions, the area of the photo is 5 square inches. By how much were the dimensions of the original photo reduced?

276. ## ENGLISH 10

I need a thesis statement on the crimes of prohibition era

277. ## algebra

describe what the graph of interval {-4,10}

278. ## English

What does this sentence translate into: For those men are most apt to be obsequious and conciliating abroad, who are under the discipline of shrews at home.

279. ## algebra

what is half of 72 and 0.5?

280. ## Math

¾ of 28 = 21 what type of math problem is this? I was observing a teacher teach this but never stated what this was called.

281. ## Algebra

Can you help simplify this expression. (x+x/3) divided by (x-x/6)

282. ## physics

What is the mass of an object that requires a force of 65N to accelerate it at a rate of 13 m/s2?

283. ## Algebra 2

In how many different ways can six people be seated in a six-passenger van?

284. ## Math

I need help figuring out which measure to chose between area or volume. The question is to choose the most appropriate measure for the amount of sand needed to fill a box.

285. ## ethics

I was wondering what are two current event examples of utilitarianism?

286. ## Chemistry

I really need help with this question. If 2 trials using 10.0 mL of a solution with an unknown concentration were titrated using close to 20mL of a standard solution each trial, what approximate volume of the standard solution would be needed to titrate

287. ## Chemistry

I posted a question like this but my numbers were actually wrong. These are the correct ones. 5.94e-3 / 1.11e-3 = 5.33e-2/2.66e-2 5.35 = 2.00^m I guess this is not correct because I do not know a whole number that will give you 5.35. Chemistry - DrBob222,

288. ## BCMB

Can anyone please help me how to calculate the turnover number? The enzyme reaction shown was performed in a 10 ml volume with a concentration of PDE5 of 0.1ug/ml. The enzyme has a molecular weight of 50000 and has one active site. Calculate the turnover

289. ## social studies

Were cassette tapes famous when they first came out?

290. ## Math

for my stats exam, we are NOT allowed to use a scientific or graphing cal, my professor will give us those cheap calculator from the 99cent store. I wanted to know how can i calculate e^-4.7? on my scientific it says it0.009095 but on my cheap calculator..

291. ## Computer Tech

Name 3 factors that could affect computer performance.

292. ## Math

Can you help simplify this expression. (x+x/3) divided by (x-x/6)

my science teacher showed us a diagram of a tiny light bulb on top of a D-cell battery,there was an electric wire touching the bottom of the light bulb.the electric wire was touching the bottom of the light bulb to the bottom of the battery.BUT, the other

294. ## Math

1. Which is equal to (square root 5)^3? a. 5^3/2 b. 5^2/3 c. 5^1/3 d. 5^1/6

295. ## Calculus. I need help!

If f(x)=sin^5x, Find f'(x) i don't know im doing right way f'(x)= 5cosx * sin(x)

296. ## Math

Need to tell the appropriate measure for finding the amount of fencing to enclose a rectangular garden. Have to choose between perimeter and area. Would it be perimeter?

a carpainter made 20 pieces of furniture comprising of 74 legs. stool of 3 legs and chairs of 4 legs. How many chairs and stools did he make.

298. ## math

if 600 kids go to school and 240 walk to school what percentage walk to school ? show how to get the answer

299. ## Alg

If 30 hamburgers feed 25 how many burgers feed 45

300. ## chemistry

how to find a pH for 0.10 M HCL? please explain

301. ## math

find the perimeter or the cicumference of each figure 10.5mm 6.3mm

302. ## medical

Find dy/dx 2x+3y=sinx

303. ## algebra

describe what the graph of interval {-4,19}

304. ## math

If a dice is rolled 3 times, what is the probability of rolling a prime number, then a 2, and then a 5?

Consider the function f(x,y)=xy+xz+yz+4 at the point P=(2,-1,1) Find the unit vector in direction of maximum increase of f in the direction of p. I know the magnitude of p=sqrt6 how do i find this???

306. ## math

.68 inch to the nearest eight of an inch. Is there a formula?

307. ## Algebra 2

The nurseryman brought six different varieties of trees to plant in six locations in the park. In how many different ways can he plant the trees?

308. ## Algebra 2

A box contains 4 blue golf tees, 2 red ones, 1 yellow tee, and 3 white ones. Two tees are randomly drawn from the box. Find the probability of choosing a blue tee followed by a red one, if the first tee chosen is returned to the box before choosing the

309. ## counseling

when writing a paper on boundaries with children that have special needs what all would you write about? so far I have responsibility thanks

310. ## US HISTORY

Why did prohibition take place in mostly rural areas.

311. ## Math

Can someone please tell me Why is (4x + 5) (2x - 1) + (x - 9) (2x - 1) not in factored form? What is the correct final factored form? What is this factoring method called?

313. ## Computer Tech

Name 2 things a computer virus could do to disguise itself.

314. ## statistics

perform a hypothesis test to test claim that the proportions of women in the city directory is truly 53%?

315. ## physic

A force of 12 N acts on an object of mass 10kg and moves it with a constant velocity across a floor. What is the coefficient of fiction between the object and the floor?

316. ## Social-Studies

What is the sustainable use of resources?

317. ## English

Writeacher, I left out the following sentences. Can you please check them, too? 1) How are things? I'm sorry we haven't been in touch with each other recently. I've had a busy month. We've been on holiday, and we only got back last week. 2) I spent two

318. ## psychology

Can anyone help me write a client assessment on Bradley Cooper in the movie limitless.

319. ## Math

a) Maria collects stamps. During a Philatelic (stamp) show and sale she increased the number of stamps in her collection by 3% when she bought 24 stamps. How many stamps did she have in her collection after she added the 24 new ones? b) In an 'End of

320. ## MATH!!!

A bag contains 2 green marbles,4 red marbles,and 6 yellow marbles. You take one marble and then take another one without replacing the forst one.

321. ## Language Arts

I'm still having trouble deciding if the answer should be this or that on the sentence below. Let's exchange _______ bread for these crackers. I know that this means close by and that means further away. But the way the sentence is worded it is confusing

322. ## ALGEBRA

Please factor the following x^3 + 27. I cannot seem to grasp the concept Thank you

323. ## Marketing

How can i run a promotion that i know the market share in a profitable way.Kindly give me the formulas.

324. ## math

Hi,does anyone know the basics of adding fractions? For example 2/4+2/8=?

325. ## English

what be occupational therapy? i come across this reading story.

326. ## math

Abe has 9 pens. How many more pens does Abe need to have 12 pens. Write an equation.

327. ## Chemistry

I posted a question like this but my numbers were actually wrong. These are the correct ones. 5.94e-3 / 1.11e-3 = 5.33e-2/2.66e-2 5.35 = 2.00^m I guess this is not correct because I do not know a whole number that will give you 5.35.

328. ## math

15 people working, 4 each week, & these 4 working each quarter how do I divide them up so everyone will work a quarter of a year

329. ## physics

What is the mass of an object that requires a force of 65N to accelarate it at a rate of 13 m/s2?

330. ## math

what will the sales tax of an item be when the price is \$101.40 and the tax rate is 6.5%

331. ## math

Can you help simplify this expression. (x+x/3) divided by (x-x/6)

332. ## math

What will the sales tax be when the item is \$172.00 and the tax rate is 11%

333. ## math

What is the sales tax of an item worth \$9.75 when the tax rate is 3%

334. ## Calculus Help!

1. 8sin(cos(x^6)), find f'(x) 2. cos(sin(x^2)), find f'(x).

335. ## chemistry

why is it necessary to add phosphoric acid in addition to sulphuric acid in the dissolving of a steel sample?

336. ## math

if jhonny got a raise from 4\$ to\$4.60 what is the precentage of increase for one hour

337. ## US HISTORY

is the temperance movement still in affect today?

338. ## Computers - C Programming

How do you add a string the queue?

339. ## calc 1

describe the domain of: h(x)=(sqrt(4-x)*lnx)/((e^x)sinx)

340. ## math

in a hydralic jack 1:5 ratio diameter,and we apply a force of 25kg,what can it lift.

I need to find the order of a reaction with respect to the reactants. I set up my equation like this: 5.33e-2 M / 2.66e-2M = 1.03e-2 / 1.93e-3 I did the concentrations equal to the rates. I am just not sure what the units for rate should be. 2.00 = 5.33^m

342. ## spanish

Ud. tiene poco dinero . Si tiene que viajar, que clase de pasaje va a comprar?

343. ## math

Prove that Sin^2x - cos^2x - 1 = cos x

344. ## plumbing

Q: what is the formula, answer and conversion of a 39.8gallon electric hotwater heater and height is 22"width & 48" height and its a cylindrical tank? So were looking for the formula in steps to get the answer which is 39.8 gallons in imperial.

345. ## Algebra

g(x) = 10 over x + 7

346. ## algebra

how do you solve p(50)=0.48 ln (50+1)+27

347. ## English

The question ask us to analyze this quote, "We've got all the time in the world." What does this mean? How do you explain it?

348. ## ELA

All Collective nouns? festival family flock crowd parties army village company gallery

349. ## geometry

if ab=10 and ac =26 what is the area of abc

350. ## Law & Ethics for Medical Careers

Describe the common elements you find in at least two medical codes of ethics.

351. ## english

in the scarlett letter, how is cultural renewal shown.

352. ## engineering

in a hydralic jack 1:5 ratio piston diameter,and we apply a fofce of 25kg,what can it lift.

353. ## Due in an hour help please

Simplify: x^3+x^3 My answer was : 2x^6 is this incorrect because my test the teacher had marked it wrong as if he was saying that it. Was going to be. 2x^3 instead

8+4

355. ## MATH

\$10.00 worth a gas at 1.29 per gal equal to how many gal?

100+10y=140

357. ## college algebra

Can anyone please help me with this? for the function f(x) =1/x....f(x)is increasing on the interval(s) and f(x) is decreasing on the interval(s)???

358. ## math

if 6 balls is 2/3s of aet how many in the whole set?

359. ## Math

I am needing help explaining to my 10 year old cousin about congruent figures and motions - he has to describe how four turns can put a figure in its original position. Many thanks!

360. ## mathematical

Using a grid and parimators of 6-2-7 how do I do this?

361. ## Calculus AP need help!

1. f(x)=√5x+6, find f'(x) 2. f(x)=√4x^2+3x+4, find f'(x). i got stuck. f(x)=√5x+6=(5x+6)^1/2 f'(x)= 1/2(5x+6)^-3/2*(5).

362. ## math

18mm 9mm whats the base its a trapazoid

363. ## COM 155

What do you hope to accomplish COM 155?

364. ## math

m + 2/3 = 5/6, so what is m