# Questions Asked onApril 11, 2013

1. ## 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

2. ## 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

3. ## 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 .

4. ## 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.

5. ## 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

6. ## 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

7. ## 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.

8. ## weber state university

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

9. ## 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)

10. ## 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

11. ## 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?

12. ## Math

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

13. ## 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

14. ## 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

15. ## 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

16. ## 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

17. ## 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?

18. ## 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?

19. ## 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

20. ## 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 ?

21. ## 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

22. ## 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

23. ## 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

24. ## English Language Arts

Give examples of three transitional expression.

25. ## 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

26. ## 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

27. ## 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

28. ## 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

29. ## 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.

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

31. ## 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]

32. ## 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

33. ## 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?

34. ## Algebra 2

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

35. ## calculus

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

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

37. ## 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

38. ## 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

39. ## 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

40. ## basic english

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

41. ## 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

42. ## 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

43. ## 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

44. ## 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

45. ## 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?

46. ## 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.

47. ## 8th grade math!!!!! :)

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,

48. ## 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

49. ## Psychology

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

50. ## math

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

51. ## 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

52. ## Psychology Counselling

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

53. ## 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?

54. ## 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

55. ## 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,

56. ## 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?

57. ## 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

58. ## 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

59. ## Englishh

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

60. ## 4th

solve 1/2 + 17/35 =

61. ## MARK TWAIN

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

62. ## Trigonometry

factor 3sintheta+2sintheta-1

63. ## 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

64. ## Psychology

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

65. ## math

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

66. ## 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?

67. ## 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

68. ## 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.

69. ## 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

70. ## 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

71. ## 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?

72. ## 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

73. ## English

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

74. ## 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

75. ## HISTORY

What was the third force in Vietnam?

76. ## 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?

77. ## 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.

78. ## Algebra 2

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

79. ## 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

80. ## home economics, life science, mathematics and tourism

What career is ther when taking those subjects

81. ## 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

82. ## 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?

83. ## 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

84. ## health

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

85. ## 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?

86. ## 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

87. ## math

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

88. ## 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

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

90. ## 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

91. ## 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

92. ## 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

93. ## 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

94. ## 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

95. ## 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?

96. ## English

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

97. ## 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.

98. ## tg3x-1=0

Find solutions

5 + 4 = 12 is an equation of equality.

100. ## 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

101. ## 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 ?

102. ## Algebra 2

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

103. ## Geometry

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

104. ## Algebra 2

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

105. ## 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

106. ## 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

107. ## 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.

108. ## 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

109. ## 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?

110. ## 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.

111. ## 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

112. ## 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

113. ## calculus

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

114. ## calculus

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

115. ## 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

116. ## math

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

117. ## 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?

118. ## math

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

119. ## chem

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

120. ## 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

121. ## 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

122. ## 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.

123. ## 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.

124. ## English

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

125. ## 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

126. ## math

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

127. ## 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

128. ## math

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

129. ## English

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

130. ## 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

131. ## 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

132. ## 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

133. ## 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 ?

134. ## 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?

135. ## 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

136. ## Precalc with Trig

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

137. ## 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

138. ## Geometry

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

139. ## 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?

140. ## 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

141. ## 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

142. ## 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

143. ## 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)

144. ## 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?

145. ## 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

146. ## 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?

147. ## 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

148. ## 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 ?

149. ## 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?

150. ## 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

151. ## Physics

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

152. ## Algebra 1

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

153. ## 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?

154. ## 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

155. ## 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

156. ## 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

157. ## 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

158. ## 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

159. ## Math

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

160. ## 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

161. ## 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

162. ## 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?

163. ## Algebra2

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

164. ## physics

state the laws of refraction of light

165. ## Fashion and fabrics

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

166. ## 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?

167. ## 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

168. ## math

what have 50 legs but cannot walk

169. ## Fashion and fabrics

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

170. ## 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?

171. ## 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

173. ## math

The variance of the standard normal distribution is equal to

174. ## 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...?

175. ## math

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

176. ## 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

177. ## 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

178. ## 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

179. ## chem

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

180. ## 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

181. ## German

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

182. ## 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

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

184. ## 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?

185. ## 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?

186. ## math

how many miller meaters does it take to make aleader

187. ## 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?

188. ## 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

189. ## Math

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

190. ## 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

191. ## Life orientation

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

192. ## German

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

193. ## Biology

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

194. ## 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.

195. ## LA

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

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

197. ## social studies

what religion did India's mughal conquerors follow

198. ## algebra

the som of three consecutive even integers is -30

199. ## math

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

200. ## Chemistry

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

201. ## 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.

202. ## 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

203. ## 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

204. ## 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

205. ## 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?

206. ## 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

207. ## 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.

208. ## 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,

209. ## Physical Science

How does gravity help keep satellites in orbit?

210. ## 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.

211. ## math

what shape is a brick

212. ## 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

213. ## 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?

214. ## 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

215. ## 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

216. ## 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

217. ## 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?

218. ## 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

219. ## 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

220. ## Chemistry

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

221. ## English

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

222. ## 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 ?

223. ## 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

224. ## 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?

225. ## 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?

226. ## Psychology

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

227. ## 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

228. ## 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 ?

229. ## math

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

230. ## math

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

231. ## 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

232. ## 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

233. ## Math Geometery

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

234. ## 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

235. ## 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

236. ## English Comp I

What would be a good thesis statement for a proposal essay

237. ## 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

238. ## 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.

239. ## 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.

240. ## 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

241. ## 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

242. ## 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

243. ## 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

244. ## 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

245. ## 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

246. ## 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?

247. ## 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

248. ## trig

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

249. ## 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 ?

250. ## english.. aka ELA

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

251. ## economics

what are the charectaristics of perfect market

252. ## Algerba 1

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

253. ## ELA..

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

254. ## financial report

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

255. ## 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

256. ## ela, english

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

257. ## 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?

258. ## 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

259. ## Enlish ARTS

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

260. ## Chemistry

What is the formula for CoCl2 with 45.5 percent water?

261. ## science

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

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.

263. ## 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

264. ## 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

265. ## eng 2

Benjamin Franklin was both a statesman and an inventor.

266. ## 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

267. ## 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.

268. ## health

the term "low blood" as referenced in the mountians of west virginia its meaning and treatments used.

269. ## 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

270. ## 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

271. ## 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

272. ## math

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

273. ## Chemistry

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

274. ## Science

How does gravity help keep satellites in orbit?