1. Math

Please help. What is the difference 5x-2/4 x - x - 2/4x A.) 1 B.) X-1/X C.) 0 D.) 3/2 Thank You so much.

2. Chemistry

1. Which of the following compounds is an unsaturated hydrocarbon? methane *propyne nonane methyl 2. The general name for hydrocarbons with at least one triple covalent bond is ____. alkenes alkyls alkanes *alkynes 3. What is the name of the smallest

3. college physics

Juggles the clown stands on one end of a teeter-totter at rest on the ground. Bangles the clown jumps off a platform 2.5 m above the ground and lands on the other end of the teeter-totter, launching Juggles into the air. Juggles rises to a height of 3.8 m

4. MATH

A basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jonas picks a fruit at random and does not replace it. Then Beth picks a fruit at random. What is the probability that Jonas gets a peach and Beth gets

5. statistics

The average height of 18-year-old American women is 64.2 inches. You wonder whether the mean height of this year’s female graduates from your local high school is different from the national average. You measure an SRS of 78 female graduates and find

6. physics

One end of a horizontal string is ﬁxed to a wall. A transverse wave pulse in the form of a crest is generated at the other end and moves toward the wall, as shown. Consider the pulse after it has been reﬂected by the wall. v What is/are correct

7. English

choose the phrase in which commas are used correctly to complete the sentence. Is ______ your favorite painter? A., Paul Cezanne, or Pablo Picasso B.Rembrandt Paul Cezanne or Pablo Picasso I think it is A

8. physics

A little red wagon with mass 8.00 moves in a straight line on a frictionless horizontal surface. It has an initial speed of 3.80 and then is pushed 4.7 in the direction of the initial velocity by a force with a magnitude of 10.0 .

9. weber state university

CH2=CH-CH2CH3+H2O What is the product of the reaction above

10. English

1. Which of the following would not be a helpful audiovisual aid for a presentation on drought? a poster on the effects of drought in regions around the world a short video of a farmer talking about the difficulties caused by drought an icebreaker cartoon

11. Chemistry

You extract the iron from a tablet and dilute that to 250.0 ml in a volumetric flask. You transfer 0.400 ml of this solution to a 25.0 ml volumetric flask and dilute this to volume. When you measure the concentration of this solution, you find that it is

12. MATH

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

13. Math

A club consists of 8 seniors, 7 juniors, and 4 sophomores. A subcommittee consisting of 3 seniors, 2 juniors, and 1 sophomore will be chosen. How many different such subcommittees are there?

14. math

Graph the quadratic functions y = -2x2 and y = -2x2 + 4 on a separate piece of paper. Using those graphs, compare and contrast the shape and position of the graphs.

How many grams of kno3 can be dissolved in 100g of h2o at 50°c

16. English

another possible solution to Henry's problem in The Californian's Tale?

17. geometry

a rectangular patio is 13 feet by 84 feet. In walking from one corner of the patio to the opposite corner, how much distance is saved by cutting diagonally across the patio rather than walking around the outer edge?

18. Physics

Particle A of charge 2.76 10-4 C is at the origin, particle B of charge -6.54 10-4 C is at (4.00 m, 0), and particle C of charge 1.02 10-4 C is at (0, 3.00 m). We wish to find the net electric force on C.

19. physics

In the figure below, a square of edge length s is formed by four spheres of masses, m1, m2, m3, and m4. What is the x-component and the y-component of the net gravitational force from them on a central sphere of mass m5. State your answers in terms of the

20. HIGH SCHOOL DIPLOMA - Writing Skills 1

1. Which of the following is correct in regard to the use of formal English? A. Formal English is used more frequently in speaking than in writing. B. In formal business correspondence, it's best keep the language impersonal. C. Contractions are considered

1. Which of the following compounds is an unsaturated hydrocarbon? methane *propyne nonane methyl 2. The general name for hydrocarbons with at least one triple covalent bond is ____. alkenes alkyls alkanes *alkynes 3. What is the name of the smallest

22. algebra

in the past professional baseball was played at the astrodome in Houston, Texas. the astrodome has a maximum height of 63.4 m. the height of a baseball t seconds after it is hit straight up in the air with a velocity of 45 ft/s is given by h = -9.8t + 45t

23. math

The tax rate on Harriet Walker's \$80,000 vacation home is 20 mills. The property is assessed at full value. How much will Harriet Walker pay in taxes this year? A. \$640 B. \$440 C. \$1,600 D. \$2,000

24. physics

A rocket cruising past earth at 0.800c shoots a bullet out the back door,opposite the rocket's motion,at 0.900c relative to the rocket. What is the bullet's speed relative to the earth?

25. Calculus

The speed of a runner increased steadily during the first three seconds of a race. Her speed at half-second intervals is given in the table below. Find lower and upper estimates of the distance she covered during the first three seconds of the race. Use

26. algebra

(1) if root x-a/x-b + a/b = root x-b/x-a + b/a, b not equal to a, then value of x is (2) if x = 2 root 24/root3+root2 then value of x+roo8/x-root8 + x+root12/x-root12 (3)if a = 2+root3/2-root3 & b = 2-root3/2+root3 then value of (a square + b square + ab)

27. Physics

A projectile is fired vertically from Earth's surface with an initial speed v0. Neglecting air drag, how far above the surface of Earth will it go? (Use any variable or symbol stated above along with the following as necessary: ME for the mass of the

28. life orientation

1.Identify and describe 3 environmental health hazards that cause ill health,globally.Include evidence that is current of the identified issues.Use graph,statistics,pictures etc 2.Critically discuss 10 ways in which the environmental health hazard can

29. physics

Find the work done when a 20 kg sled is pulled across level ground by a rope that makes a 50 deg angle with the horizontal. The sled moves 40 m and the rope is pulled with 10 N of force. If the work done by friction is 240 J, what will happen to the

30. Calculus

A man starts walking north at 4 ft/sec from point P. Five minutes later a woman starts walking south at 5 ft/sec from a point 500 ft due east of P. At what rate ae the people moving apart 15 minutes after the woman starts walking? Draw a diagram. 1) What

31. Physics

An object is placed in front of a convex mirror with radius of curvature = 17 cm. The object's height is 3.5 cm and it is initially 25 cm in front of the mirror. Find the (a) location and (b) height of the image. Next the object moves closer to the mirror,

32. chem

La(s) ¨ La(OH)3(aq) (basic solution) Complete and balance the following half-reactions

33. Social- history

Spanish power grows Im only stuck on this quesion, How were charles V and Philip ii alike and different in their goals of ensuring absolute power and strengthening catholisism?

34. phics

In an experiment on motion, a cart weighing 240 N was pulled up an inclined plane. Which of the following would be the expected reading on the spring scale as the cart is pulled up an inclined plane set upon two books

35. physics

What wavelength of sound would a bat need to detect a 1cm diameter mosquito? Also, if it took 0.3 seconds for sound to return to a moth how far away would the moth be?

36. Physics Hear

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

37. physics

A 350-g air track cart on a horizontal air track is attached to a string that goes over a pulley with a moment of inertia of 6.00 × 10-6 kg·m2 and a radius of 1.35 cm. The string is pulled vertically downward by a force of 2.50 N. What is the

38. Law

According to Robert Nozick, the state is justified to tax a citizen (even against his or her will) if: a) the revenues support things like healthcare and education, which improve the life-prospects of all citizens. b) all citizens are required to pay the

39. phyics

A 0.2 kg plastic ball moves with a velocity of 1.5 m/s. It collides with a second plastic ball of mass 1.8 kg, which is moving along the same line at a speed of 0.1 m/s. After the collision, both balls continue moving in the same, original direction. The

40. Physics Electric Force

Particle A of charge 2.76 10-4 C is at the origin, particle B of charge -6.54 10-4 C is at (4.00 m, 0), and particle C of charge 1.02 10-4 C is at (0, 3.00 m). We wish to find the net electric force on C. (a) What is the x component of the electric force

41. Economics

What describes a tax that is assessed according to benifits received principle? a.) Thosew who receive direct payment of the money tha tax generates are the people who pay the tax b.) Those who pay the tax receive the benifits the tax provides. c.)One

42. Pre Calculus

I keep trying to solve this by factring but I can't seem to get! It's so frustrating! The problem is 1+tan2x=0 This is how I worked the problem before: 1+((2tanx)/(1-tan^2x))=0 ((2tanx)/(1-tan^2x))= -1 Then I cross multiplied to get: -1 + tan^2x = 2 tanx

43. finance

4. a. Someone in the 36 percent tax bracket can earn 9 percent annually on her investments in a tax-exempt IRA account. What will be the value of a one-time \$10,000 investment in 5 years? 10 years? 20 years? b. Suppose the preceding 9 percent return is

44. Calculus

Find the linear approximation of the function f(x)=^3sqrt(1+3x) at a=0 and use it to approximate ^3sqrt(1.03)Is this an overestimate or underestimate of the actual value? Explain your answer in terms of the tangent line and the curve.

45. math

An art teacher has a box of markers.She keeps half of the markers in the box and gives 1/3 of the other half to group A.The remaining markers were shared equally among the 8 students in group B.What fraction of the whole box does each of the students in

46. social studies

". . . I need not tell the brave survivors of so many hardfought battles, who have remained steadfast to the last, that I have consented to the result from no distrust of them. But, feeling that valor and devotion could accomplish nothing that could

Robin tosses a fair coin and then draws a ball from a bag that contains one red, one blue, and one green ball. PART A: What are the possible outcomes for the experiment? Explain. PART B: Three balls-one red, one blue, and one green-are added to the bag.

48. physics

when 100 J of work is done on a stationary flywheel ( that is otherwise free to rotate in place), its angular speed increases from 60 rev/min. What is its moment of inertia?

49. Math

Two investments are made totaling \$4800. In the first year they yield a total of \$412 in simple interest. Part of the money is invested at 8% and the rest at 9%. Find the amount invested at each interest rate.

Determine whether each sequence is arithmetic or geometric. Find the next three terms. 1. 14, 19, 24, 29, . . . (1 point) geometric, 34, 39, 44 arithmetic, 32, 36, 41 arithmetic, 34, 39, 44 The sequence is neither geometric nor arithmetic. 2. –4, 8,

51. science

A satellite completes one revolution of a planet in almost exactly one hour. At the end of one hour, the satellite has traveled 2.0 × 107 meters and is only 10 meters away from its starting point. What is the numerical value of the satellite's average

52. LA

Which description best captures Abraham Lincoln's approach to slavery before he signed the Emancipation Proclamation? A;Lincoln was himself pro-slavery, but thought that states should have the right to choose whether or not slavery was legal. B;Lincoln was

53. english

What is the pronoun in let us think of a way to clean up litter,said matt and lynn .then write the underline words that they replace.

54. 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

55. Math

Shanze PAID TOTAL RS.98 FOR NECKLACE and PURSE.NECKLACE COST RS.18.20 MORE THAN THE PURSE FIND THE COST OF PURSE?

56. Chemistry

The Ka of a monoprotic weak acid is 4.47 × 10-3. What is the percent ionization of a 0.184 M solution of this acid?

57. physics

During a thunderstorm, the separation between the clouds and the earth acts as a giant capacitor with a capacitance of 2,500 µF (µ is the SI prefix for 10-6). If a tower is struck by a lightning bolt that releases 50 C of charge, how much energy is

A company manufactured 1,000 televisions. Testing showed that 20 of the televisions were defective. PART A: What is the experimental probability that the next television will be defective? PART B: Based on the probability in PART A, how many of the next

59. physics

A crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates a curve in the flat road. The curve may be regarded as an arc of a circle of radius 39.6 m. If the coefficient of static friction between crate and truck is

60. financial report

the owner's equity section of the balance sheet should appear as

61. Chemistry

I need help starting this question... A buffer solution is prepared by adding 30.0g of pure acetic acid to 41.0g of sodium acetate in water, and then diluting the solution to 1.00L. What is the pH of the buffer solution?

62. Chemistry

20.00mL of a 1.100E-4 mol/L Pb(NO3)2 is mixed with 80.00mL of 4.450E-2 mol/L CaI2. Will a precipitate form? Here's what I did... [Pb2+] c=n/v = (1.1E-4 mol/L x 0.02L)/(0.02L + 0.08L) = 2.2E-5 mol/L [I-] c=n/v = (4.45E-2 mol/L x 0.08L)/0.1L = 3.56E-2 mol/L

63. Physics

a cars speedometer reads 20 m/s after acceleration from standing start, for 25s. what was the magnitude of acceleration?

64. Math

In 1800, the area of the United States was 891,364 square miles. After the Louisiana Purchase in1803,the area increased by about 93%. What was the area of the United States after the Louisiana Purchase? Round to the nearest square mile

65. Physics

A mirror produces an image that is located 50.0 cm behind the mirror, when the object is located 5.50 cm in front of the mirror. (a) What is the focal length of the mirror? (b) Is the mirror 1 - concave or 2 - convex? (Give the number of the correct

66. science

You are a maker of hot air balloons and wish to construct a balloon that will lift you and a friend to places unknown. Your standard balloon design is a perfectly spherical, nylon fabric balloon with a small hole on the bottom for the burner that heats the

67. Social Studies

When Nelson Mandela received the Nobel Peace Prize, he gave a speech in which he noted the contributions of Martin Luther King Jr. Here are some words of his speech: "...It will not be presumptuous of us if we also add, among our predecessors, the name of

68. math

If the temperature at 10 o'clock is 46 degrees ,at noon it is 54 degrees, 2 o'clock it is 62 degrees, at 6 o'clock it is 60 degrees what would the temperature at 4 o'clock be

69. physics

A man pushes a packing case of total mass 40kg across a floor at a constant speed of 0.5m/s by exerting a horizontal force of 100N what is the resultant force on the case how big was the force of friction acting on the case how much work was done in 3s

70. LA

How did the Civil War affect the Northern and Southern economies? A;The North experienced more severe inflation than the South. B;Overall the South fared much worse economically than the North. C;The South experienced a boom in manufacturing. D;The North's

71. History

1. Puerto Ricans experienced which of the following when they migrated to the United States from Puerto Rico in the 1950s? Deportation as undocumented aliens Family friction and a reversal in traditional sex roles A middle-class lifestyle in the barrio

72. Math

Jeremy got scores of 93,82,91, and 88 on his first four math test. What score must he get on the fifth test to have an average test grade of 90 for the five test ? Can someone explain step by step. Please

73. Equilibrium

A beam having a length of 20 metres is pivoted at its mid point. A 200 newton load is located at a point 5 m from the right hand end of the beam. A 300 newton load is located at a point 8 m from the right hand end. In order for the beam to be in

74. English

Use coordination to combine each pair of sentences below into one sentence. Use a word or phrase that expresses the relationship shown in parentheses. 1.Most people collect stamps only as a hobby. Some people collect stamps as an investment. (contrast) 2.A

75. Physics

How much work is done pushing a wheel barrow full of cement 5.3m forward if a force of 500N is applied 20 degrees from the vertical?

76. Physics

In the absence of a nearby metal object, the two inductances (LA and LB) in a heterodyne metal detector are the same, and the resonant frequencies of the two oscillator circuits have the same value of 580.0 kHz. When the search coil (inductor B) is brought

77. Physics

An object is placed 11 cm in front of a concave mirror whose focal length is 23 cm. The object is 3.6 cm tall. Determine (a) the location of the image, taking a real image as a positive value and a virtual image as a negative value. (b) Determine the

78. Physics

Two boys standing on carts that move along a horizontal frictionless surface. The mass of each boy-cart combination is 100 kg, and each moves initially with the velocities of: Boy A 7cm/sec and Boy B: 10cm/sec. The boy on cart A throws a 2kg ball to the

79. Trigonometry

factor 3sintheta+2sintheta-1

80. Chemistry

A student in lab gathered temperature and concentration data for the solubility of borax and generated a plot of ln(Ksp) vs. 1/T having the equation of the line y = -11655x + 35.585. Determine the temperature (in units of K) at which the reaction becomes

81. English

Fill each blank with a coordinating word or phrase and proper punctuation in order to form a combined sentence. 1.Exercise has become very popular today _______ millions of Americans run or jog. 2.Exercise is fun _______ exercise is a good way to stay

82. Math

You deposit \$6,700 in a money-market account that pays and annual interest rate of 3.3%. The interest is compounded quarterly. How much money will you have after 4 years

83. Physics!! HELP

A group of swimmers is resting in the sun on an off-shore raft. They estimate that 2.5 m separates a trough and an adjacent crest of surface waves on the lake. They count 15 crests that pass by the raft in 15 s. How fast are the waves moving? _____m/s

84. Physics30

Changing Momentum The illustrations show two ways of providing impulse to change the momentum of a vehicle. In the top illustration, the vehicle collides with a massive concrete barrier. In the bottom illustration, the vehicle collides with water-filled

85. English

choose the phrase in which commas are used correctly to complete the sentence. I don’t know very much about _________. A.painting sculpture or drawing B.painting, sculpture, or drawing I think it is B...?

86. Analytical Chemistry

A solution prepared by mixing 51.4 mL of 0.340 M AgNO3 and 51.4 mL of 0.340 M TlNO3 was titrated with 0.680 M NaBr in a cell containing a silver indicator electrode and a reference electrode of constant potential 0.175 V. The reference electrode is

87. math

Robin tosses a fair coin and then draws a ball from a bag that contains one red, one blue, and one green ball. What are the possible outcomes for the experiment? Explain your answer.

88. LA

How did the Civil War affect the Northern and Southern economies? A;bounties B;greenbacks C;draft D;habeas corpus

89. heat capacity , physics

if an electric kettle of 5ooW power and water in it,is heated.the temperature change from10-15c for 100 sec.find the heat capacity

90. 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.

91. Psychology

According to the all-or-none law: A. all axons in an area will fight at a given signal. B. an axon moves from its resting state with various degrees of stimulation. C. only sufficient electrical activity will cause the axon to fire. D. there is a gradual

92. math

a sameple of 137 firecrackers contained 6 duds. how many duds would you expect in a sample of 2466 firecrackers?

93. Math Geometery

Is it possible to have more than one vertical line of symmetry? Why???

94. Grammar

For questions 7–11, each sentence is missing one type of punctuation. Choose the letter of the punctuation that correctly completes each sentence. Key: ☺ = My Answer! 7. The pet stores shelves were filled with items I wanted for my pets. a. apostrophe

95. eng 2

Benjamin Franklin was both a statesman and an inventor.

96. chemistry

you heat 4.31 grams of a nickel 2 phosphate hydrate. You heat to a constant mass of 3.09 grams. What is the formula of this hydrate?

97. confederation college

1.52 kg box slides 1.24 m a long a level surface.the co-efficient of kinetic friction between book and surface is 0.140.find the work done by friction?

98. calculus

Find the specified coordinates of the centroid of the area bounded by a) x=3 and 2x=y^2 find the coordinates x and y of the centroid b) y= x^3 and y=4x in the first quadrant. Find the x coordinate of the centroid

99. physics

Three point charges +q are placed at corners of a square with sides of length L. + + + A B L O What is the potential at point A?

100. bonds

YOU WANT TO BUY A TREASURY BILL WHOSE FACE VALUE IS \$20000 IN 30 DAYS. THE INTEREST RATE IS 4.61%. HOW MUCH WILL YOU HAVE TO PAY FOR THE BILL?

101. Analytical Chemistry

A solution prepared by mixing 51.4 mL of 0.340 M AgNO3 and 51.4 mL of 0.340 M TlNO3 was titrated with 0.680 M NaBr in a cell containing a silver indicator electrode and a reference electrode of constant potential 0.175 V. The reference electrode is

102. ECU

Which of the following is not an appropriate technique for the assessment of preschool children? A. Visual documentation through photos or videotaping B. Play-based assessment C. Written standardized tests D. Child interviews

103. Pre Calculus

Having trouble verifying this identity... cscxtanx + secx= 2cosx This is what I've been trying (1/sinx)(sinx/cosx) + secx = 2cosx (1/cosx)+(1/cosx) = 2 cosx 2 secx = 2cosx that's what i ended up with, but i know it's now right. did i mess up with the

104. chemistry

I did an experiment today called "removing tarnish". we removed tarnish from a fork wrapped in foil paper. Now i have to answer some questions. please correct me if i answer them wrong. im not the best in chemistry. thanks. 1. describe the odor of the

105. algebra1

Alan went from San Francisco to Los Angeles ,about 400 miles,averaging (x+5)mph.On his journey from Los Angeles to Redding,about 500 miles,the average (x-5)mph.Then he returned to San Francisco,about 200 miles,averaging (x^2-25)mph.How long did it take

106. science

getting ready to turn this in just want to check my answers any takers?? 1. In an atom, electrons ____. (1 point) are located in the nucleus are paired with neutrons are located in the electron cloud are always in the same place 2. The maximum number of

107. English

Good claim/topic sentence for this question? Did Miep Gies face many important challenges during and after the time of the holocaust?

108. Calculus

The present value of a building in the downtown area is given by the function P(t) = 300,000e^-0.09t+¡Ìt/2 f or 0 ¡Ü t ¡Ü 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value

109. Geometry

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

110. chemistry

Please i tried to give this answer on a quiz but it was not accepted. To name this alkane: CH3CH2CH2CHCH3 with a substituent of CH3 on 2nd carbon.

111. math

suppose your salary was 28,500 in 2010 and 32,000 in 2016. Assume your salary follows a linear growth pattern.

112. economics

Suppose average movie attendance is 250 million tickets when prices are \$7 a ticket and 200 million when prices are \$9 a ticket. Other things being equal, the data imply that the elasticity of demand for movie tickets is: A. elastic, so the increase in

113. Calculus

An object at rest begins moving horizontally on the x-axis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose, after exactly 2 seconds we measure the position of the object to be 3 feet to the right of the origin AND measure the object to be

114. Analytical Chemistry

A solution prepared by mixing 51.4 mL of 0.340 M AgNO3 and 51.4 mL of 0.340 M TlNO3 was titrated with 0.680 M NaBr in a cell containing a silver indicator electrode and a reference electrode of constant potential 0.175 V. The reference electrode is

115. social studies

what religion did India's mughal conquerors follow

116. Chemistry

How many milliliters water are needed to make a 0.171 M solution that contains 1.00 g of NaCl?

117. 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

118. Psychology

Behavioral geneticists and evolutionary psychologists emphasize: A. environmental influence on development. B. the role of personality in development. C. the significance of hereditary factors in development. D. the importance of parenting skills in

119. math

Indicate whether each statement is true or false by checking the appropriate box in the table below. a. 2x is a factor of the expression (2x + y ). True or False b. (2x + y ) is a factor of the expression 3(2x + y ). True or False c. (2x + y ) is a sum of

120. LA

Key: ☺ = My Answer! 1. Another word for buoyed is a. tired. b. bothered. c. lifted. ☺ 2. Distribution of a birthday cake involves a. cutting. ☺ b. baking. c. frosting. 3. To accumulate is to a. take apart. b. pile up. ☺ c. throw away. 4. A bogus

121. Chemistry

What is the formula for CoCl2 with 45.5 percent water?

122. Chemistry

How much energy would be released when 675 grams of steam is condensed to water

123. Englishh

if my quote is exactly 4 lines do i have to indent it using MLA formatting an citations

124. if provided with solid Na acetate and 6.3M acetate

If provided with Na acetate and 6.3M acetate acid.decribe how you will prepare 1L of 0.1M acetate buffer pH=5.0[pka=4 acetate acid=4.75,and Na=23,c=12,H=1,O=16]

125. Calculus

The present value of a building in the downtown area is given by the function P(t) = 300,000e^-0.09t+¡Ìt/2 f or 0 ¡Ü t ¡Ü 10 Find the optimal present value of the building. (Hint: Use a graphing utility to graph the function, P(t), and find the value

126. math

A 4inch-thick concrete slab is being poured for a circular patio 14 feet in diameter. Concrete costs \$55 per cubic yard. Find the cost of the concrete, to the nearest cent.

127. tg3x-1=0

Find solutions

128. math

Expand the expression 3(x+4) 6(2x+3) 2(7+6x)

129. English

Expand each sentence below by adding words or phrases that modify the verb. Questions after each item suggest details you can add. 1.A French girl found them. Who was with the girl? In what time period did she find them? 2.The news spread about the Lascaux

130. Algebra

Mickey went to Donald Dee's to buy 75 milkshakes for his party. Each milkshake cost the same integer amount of cents. In total, Mickey spent at least \$124.00 on milkshakes. What is the smallest possible cost (in cents) of a milkshake?

131. grammar

the music is so cheerful that it ___1___ you to hum or whistle along. if you can't carry a tune, you will be ____2____ time to the music. in his teens he was ____3_____ orchestra. using the correct verb form, (force, direct, tap) i think it is 1) forces

132. PHYSICS

The string is 0.80 m long with tension 7.00 N. The total mass of the string is 0.012 kg. Find the wavelength of this standing wave in meters

133. math

what have 50 legs but cannot walk

134. programming

create a program that prompts the user for a number the returns the value on the main method after validation.Create a method that promts the user for input?

135. basic english

Dolly must clean up her room before she goes out. In this sentence, what word begins the subordinate clause?

136. math

Indicate whether each statement is true or false by checking the appropriate box in the table below. a. 2x is a factor of the expression (2x + y ). True or False b. (2x + y ) is a factor of the expression 3(2x + y ). True or False c. (2x + y ) is a sum of

137. math

The variance of the standard normal distribution is equal to

138. maths

A man travels from town a to b at an average speed of 90km/h.on his return journey he takes (one)1 hour less and his speed is 10km/h faster......1.how far apart are towns a and b, ............. ..2.what Is his average speed from town a to b and back to a

139. German

Fill in the blank with the correct German form. Das Kind ____ die Straße überquert. ist sind hat sein

what studies should i take if i pass my business studies with higher marks?...(I'm in grade 12)

141. Chemistry

A 10 mL sample of 1.5 M Potassium Phosphate is placed in a 100 mL volumetric flask and diluted to the mark. What is the Molar concentration of Potassium ions in this diluted solution?

142. math

writing algebraic expressions: 1. there were 3 times more sugar cookies baked than chocolate chip cookies 2. the kids ate 10 fewer cookies than the number of pies they made to sell 3. kino & sandra made 12 more pounds of cookie dough than tommy

143. math

The school meeting is on the 199th day of the calendar year, in (what month)?

144. math

Four identical squares, lined up side by side, form a rectangle whose area is 144. What is the perimeter of three of the squares?

145. Social Studies

When Nelson Mandela received the Nobel Peace Prize, he gave a speech in which he noted the contributions of Martin Luther King Jr. Here are some words of his speech: "...It will not be presumptuous of us if we also add, among our predecessors, the name of

146. Psychology

The means of travel within and between neurons is different because: A. electrical signals move impulses within the neuron, while chemical signals move the impulses between neurons. B. chemical signals move the impulses within the neuron, while electrical

147. math

1)I AM greater than 15 and less than 40 if you double me I become a number that ends in 0 1/5 of me is equal to 5 2) if you multiply me by 2 ,I become a number greater than 20 and less than 40 if you multiply me by 6,I end in 8 if you multiply me by 4 I

148. ELA..

If you do not know a word in reading a passage, what can you use to understand its meaning?

149. English Language Arts

Give examples of three transitional expression.

150. Math-Stat Help

In a random sample of 78 teenagers, 32 admit to texting while driving. Construct a 98% confidence interval for the percentage of teenager that text while driving. Start by showing that conditions for constructing a confidence interval are met. 1) Check

151. physics

Your written homework will be graded entirely on the clarity and completeness of your derivation. No credit will be awarded for a final answer without a derivation. As usual, simplify your final answers as much as possible. A giant Pez dispenser of mass m

152. LA

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

153. physics

Two cylindrical conductors with equal cross sections but different resistivities are put end-to-end. Find the magnitude of the charge that accumulates at the boundary between the conductors if a current I=100A flows in the wires. The wires are made of

154. math

If the first of 1000 consecutive whole numbers is odd, their sum must be a) even b) odd c)prime d) negative Help?

155. 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,

157. English

Question: Does 'What's up?" mean "How are you"? or "Hello, what are you doin g"? •English - Ms. Sue, Thursday, April 11, 2013 at 5:38pm Yes. It's an informal way of greeting someone. It's mostly used by young people. ================== Thank you for your

158. 4th

solve 1/2 + 17/35 =

159. Psychology

A massage therapist stimulates the body, which in turn stimulates the

160. Geometry

Let ƒÆ=sin −1 7 25 . Consider the sequence of values defined by a n =sin(nƒÆ) . They satisfy the recurrence relation a n+2 =k 1 a n+1 +k 0 a n ,n¸N for some (fixed) real numbers k 1 ,k 0 . The sum k 1 +k 0 can be written as p q , where p and q are

161. Psychology

Sam can't decide if he wants to go to the grocery store. Sam may had a stroke to the: A. Frontal lobe. B. hypothalamus C. Temporal lobe D. Parietal lobe I pick A.

162. Physics

An electric force of 3x10^-8N is produced from an electrostatic point charge of 4x10^-10. It is 40cm from another electrostatic point charge. What is the charge of the second point?

163. HISTORY

What was the third force in Vietnam?

164. home economics, life science, mathematics and tourism

What career is ther when taking those subjects

165. Algebra :( help me

The table below shows the weekly earnings of two groups of employees working part-time at a local grocery store. GROUP A:\$245, \$224, \$218, \$295, \$214, \$312, \$284 GROUP B:\$223, \$230, \$310, \$246, \$295, \$301, \$215 PART A: Which measure best describe the

166. physical science

What is the density of a suitcase that has a mass of 25 g and a volume of 13 cm3? Formula: Density = Mass/Volume

167. Crown poly

0.012moldm^3 of H2SO4 was prepared in 2 litre of volumetric glass.calcute (a)mass concentration. b.moles of H2SO4 used. C.density of solution

168. English

What are some connections* to Rip Van Winkle? *Connection to... -Self -World

169. Geometry

Let ƒÆ=sin −1 7 25 . Consider the sequence of values defined by a n =sin(nƒÆ) . They satisfy the recurrence relation a n+2 =k 1 a n+1 +k 0 a n ,n¸N for some (fixed) real numbers k 1 ,k 0 . The sum k 1 +k 0 can be written as p q , where p and q are

170. Geometry(first one is typo)

Let ƒÆ=sin −1 7/25 . Consider the sequence of values defined by a n =sin(nƒÆ) . They satisfy the recurrence relation a n+2 =k 1 a n+1 +k 0 a n ,n¸N for some (fixed) real numbers k 1 ,k 0 . The sum k 1 +k 0 can be written as p q , where p and q are

171. 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.

The taught capital structure for QM Industries is 45% common stock 7% preferred and 48% debt. If the cost of common equity for the firm is 17%, the cost of preferred stock is 10%, the before-tax cost of debt is 8.4% and the firm tax rate is 35%, what is

173. Precalc with Trig

What value(s) of x from 0 to 2pi solve the following equation: cos squared x - cos x - 6 = 0

174. Geometry

Arpit is thinking of a 2-digit number where the tens digit is twice the ones digit. How many different numbers can Arpit be thinking of?

175. Statics

85 lb force is applied to the 200lb crate, which is stationary before the force is applied. Determine the force exerted by the horizontal surface on the crate

176. Calculus

An animal population is increasing at a rate of 150+20t animals per year. By how much does the animal population increase between year 5 and year 8?

177. Calculus

An animal population is increasing at a rate of 150+20t animals per year. By how much does the animal population increase between year 5 and year 8?

178. Algebra 1

(5p^2-3)+(2p^2-3p^3) Simplify the expression I don't know how to do that

179. Fashion and fabrics

Gvng reasns ,explain fuly hw 2 press è embroiderd bib bfre attaching it to e apron.

180. English

choose the phrase in which commas are used correctly to complete the sentence. The Internet allows Frank to ________. A.play games, send e-mail, and browse Internet sites. B.play, games, send e-mail, browse Internet sites. I think it is A

181. Life orientation

5 ways in which the teenage pregnancy problem impacts on the community

182. algebra

the som of three consecutive even integers is -30

183. social studies

I am to draft a six to eight paper based on a life changing decision me or someone in my community has to make. I am considering writing about returning to school but I am not sure how to start. Any suggestions.

184. 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?

185. Physical Science

How does gravity help keep satellites in orbit?

186. Ka

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 pic B am i cerrect ?

187. Psychology

Most neurons send information to: A. glial cells. B. the nucleus. C. other neurons. D. muscle groups

188. math

the speed of train A is 14 miles slower than train B. train A travels 210 miles in the same time it takes train B to travel 280 miles. Whats the speed of each train?

189. Psychology

Information which comes to a neuron must arrive through its: A. axons. B. glial cells. C. prefrontal area. D. dendrites.

190. physics

A learner with a mass of 40 kg rides on a skate board with a mass of 3 kg. The resultant force on the learner and the skate board is 90 N. Calculate his acceleration.

191. Physics

4. What does the slope of each of the following graphs stand for? (y versus x) a) mass vs volume b) velocity vs time c) mass vs force d) kinetic energy vs frequency e) sine incident angle vs sine refracted angle f) charge vs voltage g) voltage vs current

192. Geometry

ABC is a triangle with circumcenter O, obtuse angle BAC and AB less than AC. M and N are the midpoints of BC and AO respectively. Let D be the intersection of MN with AC. If 2AD=(AB+AC), what is the measure of angle BAC ?

193. Math

You bought an oil company stock for \$83K per share. The price of the stock lost \$16M during a six month period. Find the price of the stock at the end of the six months. How do I do this?

194. CHEM QUICK HELP

Which of the following are correct statements? (Could be as many as 4) 1. Standard pressure is 101.3 atmospheres 2. One mole of gas contains 22.4 representative particles 3. One mole of gas always occupies 22.4 liters regardless of other conditions 4.

195. English Language Arts

What does CUPS stand for? i know that C stands for Capitalzation, P stands for Punctuation, and Sstands for Spelling but what is U?

196. chemistry

A student estimated the volume of a liquid in a beaker to be 300 mL. When she poured the liquid into a graduated cylinder, she measured the volume as 295 mL. Considering the measurement in the graduated cylinder to be the accepted value, what is the

197. MARK TWAIN

What is the formula for finding the perimeter of a square?

198. math

how do you find a mode when all the numbers are different?

199. Physics

If an electric force of 550N is produced from two charges, one is 345C, the other is 125C. How far apart are the charges?

200. physics

the ﬁgure is 4.00 W. E 3.0 Ω 15.0 Ω 5.0 Ω 4.3 Ω 3.0 Ω Find the equivalent resistance of the circuit. Answer in units of Ω

201. physics

Consider the following circuit. 7.3 Ω 3.0 Ω 3.0 Ω 4.5 Ω 1.0 Ω 3.0 Ω 4.5 Ω 19.0 Ω 19.0 Ω 30 V Find the equivalent resistance. Answer in units of Ω

202. algebra1

a baseball is hit into the air. the path of the ball can be described by the equation h=23t-5tsquared, where h is the height in meters, and t is the time in seconds. how high is the ball after 3 seconds?

203. Calculus

The velocity of an object t seconds after it started moving is 6). Find the total change in the object's position in the 6th second.

204. Algebra 2

Find the x-intercept of y-7=3^(x+4). My answer: ( (log base 3 of -7) minus 4)

205. Grammar

Hi beautiful people! Quick question if you are writing a congratulatory letter should you say - I would like to take the time to congratulate you on your extraordinary commitment to XXX charity. OR - I would like to tak ethe time to congratulate you for

206. ece

Which of the following statements about large motor development in children is correct? A. Catching a ball is easier than throwing for two- and three-year-olds. B. Kicking a ball is difficult for preschool children because it requires balancing skills and

207. health

The National Weight Control Registry found in their research that those who had maintained a significant weight loss reported improvements in ________.

208. math

helow answer. show work how to figure out the below (1.2)square root + (2.8) sq. root = 3.1

209. Algebra

The function f(x)=x 3 +1 4 x−1 4 is a monotonically increasing function, hence it is injective (one-to-one), so its inverse function exists and is well defined. How many points of intersection are there, between the function f(x) and its inverse f −1

210. Algebra(1st one was typo)

The function f(x)=x^3 +1/4 x −1^4 is a monotonically increasing function, hence it is injective (one-to-one), so its inverse function exists and is well defined. How many points of intersection are there, between the function f(x) and its inverse f^−1

211. math

if you have a 4 kg block and divide it into 8 equal blocks. what will be the mass of each block in grams?

212. physics

From a cliff that is 8.9 m above a lake, a young woman (mass 44 kg) jumps from rest, straight down into the water. At the instant she strikes the water, what is her de Broglie wavelength?

213. Algebra 2

Use the laws of logarithms to condense the following expressions. log base 5 of 6 - log base 5 of x

5 + 4 = 12 is an equation of equality.

215. information technology (elphi)

I need help with my PAT phase en I need to know what must go into the pat file and the whole layout of it

216. 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 ?

217. Algebra 2

Use the laws of logarithms to condense the following expressions. log base 3 of 2 + 2 log base 3 of x

218. Algebra 2

use the laws of logarithms to expand the following expressions log base 2 of xãy

219. calculus

Find the centroid of 4 particles of equal mass located at (0,0), (4,2), (3,-5), and (-2,-3)

220. calculus

Find the particular solution of the following differential equation by using the given boundary conditions. y(1+x)=x(y+1)(dy/dx) when y=1 x=1

221. calculus

Find the coordinates of the centroid of the following volume of revolution formed by rotating the area bounded by y^2-4=-x^2, x=0,x=1, And the "x" axis about the "x" axis.

222. calculus

find the solution: e^y=1/(y^'+1)

223. calculus

find the solution: (y^(2) dx)/(1-x)=dy

224. math

Expand the expression 3(x+4) 6(2x+3) 2(7+6x)

225. math

Indicate whether each statement is true or false by checking the appropriate box in the table below. a. 2x is a factor of the expression (2x + y ). True or False b. (2x + y ) is a factor of the expression 3(2x + y ). True or False c. (2x + y ) is a sum of

226. English

What are some connections* to Rip Van Winkle? *Connection to... -Self -World I need connection to other books and things

227. math

Which is the best way to find the weight of an elephant? A) gallon B) ounce C) kilogram D) liter Is it B?

228. Geometry

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

229. Geometry

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

230. Calculus

A friend of mine was selling the lumber from his old barn to be repurposed. Knowing that I liked old wood, he set aside a board totaling 12 feet in length for me. I want to cut it to form a rectangular frame for a mirror. What should the dimensions be to

231. Geometry

A set of three distinct positive integers has mean 4 and median 5. What is the largest number in the set?

232. Calculus

Bruce has commissioned the construction of an open-top rectangular tank to be fashioned from a 3m by 5m sheet of steel. Squares will be cut from each corner and sides will be bent upward to form the tank to be used for live bait storage. Find the

233. Calculus

Marty wants to make a replacement part for a aeration machine that he is working on. He decides to take a rectangular sheet of metal with perimeter of 46cm and dimensions x cm nd y cm and roll it into a right circular cylinder as shown below. What values

234. Algebra

Raj and Vikram are two travelers in ancient India, walking along the Silk road. On the first day of travel, Raj travels 5 yojanas, and on each successive day travels 3 yojanas more than the previous day. Vikram started at the same place and travels the

235. Calculus

Below is a table containing information about differentiable functions f and g: x: -2 -1 0 1 2 f(x): 4 3 5 2 1 f'(x):1 4 2 5 3 g(x): 5 2 1 3 4 g'(x):3 5 4 1 2 F(x) + g(x), G(x)=f(x) * g(x), H(x) = g(x)/f(x) Find F'(-1) Find G'(0) Find H'(-2)

236. 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?

237. Algebra

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 ?

238. Statistics and Research Methods

Trying to understand these two correlations using the Pearson r. How do i interrupt the relationships 1)Just World and Locus of control r=-.224 p-value=.210 (Sig. 2-tailed) 2)Just world and Authoritarianism r=.329 p-value=.062 3)Locus of Control and

239. math

solve the problem the national debt is \$\$44,280,000,000 and the population is 4,920,000.what is the debt per person

240. Math

Write equations for four lines that intersect to form sides of a paralleagram

241. Algebra2

Combine, rewrite & solve: 4 log base 9 of 3 = x log base x of 12 + log base x of 18 = 3

242. physics

state the laws of refraction of light

243. Fashion and fabrics

For Which type of fabrics r ball point mchne ndles recomended n why.

244. 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

PROBLEM 1 The video discusses the requirements of a package to qualify as freight. A package must weigh at least 151 pounds. It must be palletized, stackable, forklift-friendly and shrink-wrapped or banded for stability. The uniform cargo footprint can be

246. math

Factor each polynomial, if possible. If the polynomial cannot be factored, write prime. 15b^2-24bf

247. chem

calculate the concentration of all ions present in 58.7 mg NH4Br in 500 mL of solution

248. science

The _____ is an example of a joint that allows little to no movement, called a(n) _______ joint. (1 point) pelvis; immovable skull; movable ball-and-socket; movable vertebrae; immovable My Answer: 1)D Is this correct?

249. math

how many miller meaters does it take to make aleader

250. Math

Find the Least Common multiple of the two expressions: 24x^2-96 & 18x^2+18x-36

251. German

Ich habe spiele gespielt. would this be correct for "I played games"?

252. Biology

Through the process of spermatogenesis __________ sperm are created, whereas oogenesis creates ________ egg(s) and _________ polar bodies.

253. math

what shape is a brick

254. math

Rents a van at daily rate of \$19.95 plus .39/mile, another company will rent same van for \$39.95 plus .29/mile. for what mileage are the costs the same?

255. Chemistry

How many grams of co2 are in 3.92 times 10 to the 24th molecules

256. English

Question: Does 'What's up?" mean "How are you"? or "Hello, what are you doing"?

257. Psychology

__________ serve as the cytoskeleton of the brain. They support the function of neurons by insulating, repairing, and nourishing them. A. Glial cells B. Dendrites C. Axons D. Cell bodies

258. math

maria shoveled snow fromher driveway in 55 min. tom can do the same job in 30 min. how long will it take to do it together?

259. math

This chart shows Vic's workout times for the week. Day Number of Minutes Monday 45 Tuesday 50 Wednesday 36 Thursday 70 Friday 49 What was his total time? average (mean) time? total time = 4 hours and 10 minutes average ?

260. math

a student traveled 238km in 15 days. at the same ratio, how far would the student travel in 30 days?

261. math

a student traveled 238km in 15 days. at the same ratio, how far would the student travel in 30 days?

262. English Comp I

What would be a good thesis statement for a proposal essay

263. physics

A learner with a mass of 40 kg rides on a skate board with a mass of 3 kg. The resultant force on the learner and the skate board is 90 N. Calculate his acceleration.

264. real estate finance

A property sells for \$125,000 and the homeowner has a mortgage balance in the amount of \$65,000. The seller is to pay the buyer's expenses in the amount of \$1,000. Seller and buyer agree to close on November 18, 2012. Seller's annual propert taxes are

265. math

Raymond is planting a border of 48 seedlings that will completely surround a rectangular garden. He wants to plant the seedlings 2 feet apart. If the garden plot is 30 feet long, how wide should it be?

266. trig

What happens when you try to elevate sin-1(3/2)?

267. english.. aka ELA

When writing the first sentence and introduction, what do you do so the reader knows you understand your task?

268. economics

what are the charectaristics of perfect market

269. Algerba 1

Write in Scientific Notation 1. (3X10to the tenth) (7X10to the -4th) 2. (5X10to the 4th)to the second Thanks so much!

270. Psychology Counselling

I need to Interview a Counsellor. Can you suggest some questions can I ask about her job? Thanks!

271. ela, english

TRUE OR FALSE: It is imperative that you pace yourslef because of a test is timed?

272. Enlish ARTS

What is important as a last step in writing an essay?

273. science

In DC which wire will lose more enrgy 5m copper or 5m aluminium?

274. chemistry

Cathode = Cu2(s) + 2e- ¨ Cu(s) Anode = 2H2O(l) ¨ O2(g) + 4H(g) + 4e- Net = Cu2(s) + 2H2O(l) ¨ Cu(s) + O2(g) + 4H(g) the minimum voltage that must be supplied to electrolyze aqueous copper(II) sulfate