# Questions Asked onMay 3, 2015

1. ## math

A wall in Marcus's bedroom is 8 2/5 feet high and 18 1/3 feet long. If he paints 1/2 of the wall blue

2. ## Math

Is 8x^2 + x^2 - 7x - x + 2x + 5y - 3y equal to 9x^2 - 8x + 2y or 9x^2 - 6x + 2y?

3. ## Education

What view do you have of the children's skills and competencies? In what ways do you need to transform your view of children to see them in a more positive light? what is this question asking for? example please.

4. ## Trigonometry

Find the exact value of the expression: tan−1(tan(−120651/47π)) I just don't know how to find the exact value. Any explanation would be awesome!

5. ## chemistry

Battery acid is 4.27MH2SO4(AQ.) And density of 1.25g/ml . What is the molality of H2SO4 in the solution

6. ## psychology

Suppose that the scores of architects on a particular creativity test are normally distributed. Using a normal curve table, what percentage of architects have Z-scores: Above .10 = Below .10 = Above .20 = Below .20 = Above 1.10 = Below 1.10 = Above -.10 =

7. ## Chemisty

The aqueous solution of two soluble salts are mixed to precipitate an insoluble salt. Give four different equations to support this statement.

8. ## trigonometry

show that : sin(A+B).sin(A-B)=Cos^2B - Cos^2A =sin^2A - sin^2B

9. ## Lukhanyo

English is the language of opportunity. Why bother to teach indigenous languages

10. ## physics

a box is given a push so that it slides across the floor. how far will it go, given that the coefficient of kinetic friction is 0 .2 and the push imparts an initial speed of 4m/s?

11. ## physics

a box is given a push so that it slides across the floor. how far will it go, given that the coefficient of kinetic friction is 0.2 and the push imparts an initial speed of 4m/s?

12. ## science

The blocks shown are released from rest with the spring unstretched. The pulley and the horizontal surface are frictionless. If k = 427.1 N/m and M = 4.5 kg, what is the maximum extension of the spring?

13. ## physics

Francesca, who likes physics experiments, dangles her watch from a thin piece of string while the jetliner she is in takes off from JFK Airport. She notices that the string makes an angle of 25° with respect to the vertical as the aircraft accelerates for

14. ## Math

Integral of (1/root over 1-x^2)*(1/inverse of sin x*dx) .what is the value?

15. ## math

what formular do you use to find the area of an angle PQR

16. ## Dance

A 35-mm camera equipped with a 40-mm focal length lens is used to photograph a tree 17 m tall. If a 32-mm high image of the tree on the CCD sensor is required, how far should the camera lens be from the tree? Show Work Please! Thank you so much!

19. ## math

stuck on this problem. i started with x-2y+4z=23. here is the problem: Three men, each having denarii, found a purse containing 23 denarii. The first man said to the second, “If I take this purse, I will have twice as much as you.” The second said to

20. ## Math

Evaluate the following expressions tan(−22/15π)

21. ## English

Why is it that Ray Bradbury wrote Fahrenheit 451 during the 1950s?

22. ## Sociology

I need help choosing an object to describe me for a sociology project.

23. ## History

What is the definition of strategy?

24. ## chemistry

The half-life of C14 radioactive is 5760 yr. After how much time will 200 mg C14 sample be reduced to 25 mg?

25. ## chemistry

A 0.239 mol sample of PCl5(g) is injected into an empty 2.85 L reaction vessel held at 250 °C. Calculate the concentrations of PCl5(g) and PCl3(g) at equilibrium.

26. ## english/polsci essay excerpt edit

Can someone edit this? Also, does anyone edit whole papers? (Essay redacted per request from original poster.)

27. ## trig

Find the values of sin 0, cos 0, and tan 0ƒáif the angle 0ƒáis in standard position and its terminal side passes through the point (¡V15, 8). Give answers as fractions.

28. ## Chemistry (Molarity)

Indicate the concentration of each ion or molecule present: a mixture of 48.0 mL of 0.11 M KClO3 and 28.0 mL of 0.29 M Na2SO4. Assume the volumes are additive. a) [K+] b) [ClO3-] c) [SO42-] d) [Na+] We haven't taken notes on this particular type of problem

29. ## trigonometry

Solve cos(x)=0.07 on 0≤x

30. ## Math-Probability

In 2008, 1.01% of returns were audited, 85.6% returns received a refund, 49,907 the number examined resulting in a refund, 1,342,674 number examined resulting in no refund. If a taxpayer receives a refund, what is the likelihood that the taxpayers return

31. ## Physics

Consider two students, a 65 kg guy and a 50 kg girl who are attracted to each other, gravitationally, that is. They sit next to each other in Physics class which means there is 1.5m between their centers. What is the magnitude of the force of gravity

32. ## trigonometry

Solve sin(x)=−0.89 on 0≤x

33. ## Global finance

What moves an exhange cross rate in forex?

34. ## Maths

Four non coplanar points are given. How many boxes have these points as vertices?

35. ## math

the path of a cliff diver as he dives into a lake is given by the equation y=-(x-10)power of 2 + 75...where y meters is the divers height above the water and x metres is the horizontal distance travelled by the diver. what is the maximum height the diver

36. ## Math 222

How do I graph these two problems? y = −x2 g(x)= sqrt x-1

37. ## mth121

mth 121(solve the linear equation:2x+3y=3, x-2y=5 and 3x+2y=7.)

38. ## French

Can someone check my present tense story for me in French? as well as the past? (This is another simpler summarization cuz my other one was so complicated) but thx to whoever helped. 1.) Il y a un homme qui s'appelle Alexandre Lagarde. 2.) Il a un

39. ## trigonometry

1) Find the exact value of the expression: tan−1(tan(−120651/47π))... How do you find Tan(-120651/47pi)? I don't know how to find exact values, if it's not a recognizable value. 2)Find a simplified expression for tan(sin−1(a/5))... Because tan = y/x

40. ## Math

(sinx - cosx)(sinx + cosx) = 2sin^2x -1 I need some tips on trigonometric identities. Why shouldn't I just turn (sinx + cosx) into 1 and would it still have the same identity?

41. ## Chemistry

Underground miners formerly used headlamps in which calcium carbide (CaC2) was reacted with water to form acetylene (C2H2) gas as shown in the following reaction: CaC2(s) + H2O (l) ---> C2H2 (g) +Ca(OH2)(s) The acetylene produced was then burned to produce

42. ## Criminal Justice

Which of the following would a rational choice theorist most likely consider to be a factor in crime causation? A. Poverty B. A poor home environment C. Inadequate socialization D. Individual choice is it D

43. ## Law and Ethics Medical

2. Elizabeth says duty of care is the obligation health care workers have toward patients. Randy says professional etiquette is the obligation health care workers have toward patients. Who is correct? A. Only Randy is correct. B. Neither is correct C. Only

44. ## Law and Ethics Medical

The verification requirement of HIPAA requires that PHI information not be disclosed without verifying A. the accuracy of medical information before it's released. B. the identity of the person making the request. C. that the information can't be obtained

45. ## Law and Ethics Medical

. Physicians in general practice are expected to conform to the standards A. of other general practitioners in the same or similar communities. B. of specialists. C. that each individual doctor is capable of meeting, given each doctor's documented personal

46. ## Law and Ethics Medical

The verification requirement of HIPAA requires that PHI information not be disclosed without verifying A. the accuracy of medical information before it's released. B. the identity of the person making the request. C. that the information can't be obtained

47. ## Criminal Justice

According to the U.S. Department of Justice, the majority of defendants facing the death penalty are: A. white males. B. minority males. C. white females. D. minority females. is it A

48. ## setswana

kwelola mafoko a latelang mme o a buisitse kwa sekao: mala,sala,bala,sila,bin,lala,mens,bua,rua,kua,tima,kima,sia godimo dira ja o ga fitlha a buisa sentle

49. ## physics

vibrating a long spring with a succession of pulses with a frequency of 50Hz produces adjacent nodes that are separated by 3.5cm. what is the velocity of the longitudinal waves formed?

50. ## Science

An existing cord that you use for a lamp is much thinner than an extension cord recommended for use with large appliances. if u plugged in a refrigerator using a lamp extension cord, the plastic coating of the cord could melt and perhaps start a fire. why

51. ## Criminal Justice

People appear to be particularly fascinated by what type of crime? A. Violent B. Property C. Victimless D. Common law Is it A

52. ## Law and Ethics Medical

Which of the following is true regarding birth certificates for nonhospital births? A. Birth certificates for nonhospital births are filed by the mother. B. Birth certificates for nonhospital births are optional but recommended. C. Birth certificates for

53. ## economics

Are there any current subsidy or welfare issues that are being addressed in parliament or in municipalities

55. ## English

Why marriege is an advantage for men not only for woman?

78. ## Calc 1

A rectangular storage container with an open top is to have a volume of 10 m3. The length of the base is twice the width. Material for the base is thicker and costs $13 per square meter and the material for the sides costs$10 per square meter. Find the

79. ## class

Suppose that the scores of architects on a particular creativity test are normally distributed. Using a normal curve table, what percentage of architects have Z-scores: Above .10? Below .10? Above .20? Below .20? Above 1.10? Below 1.10? Above -.10? Below

80. ## Math

Pearland Medical Center owns a small satellite clinic, specializing in General Practice, located at nearby Pearland airport. General Practice Clinic’s sole payor is Air Health, a health care plan that covers the airport employee population. Air Health

81. ## Calculus

A wedge is cut from a right circular cylinder of radius r by two planes, one perpendicular to the axis of the cylinder and the other making an angle (beta) with the first. Find the volume of the wedge by slicing perpendicular to the y-axis. Please show all

82. ## Calculus 2

Find the radius of convergence and interval of convergence of the series. There is an infinity sign on top of the summation symbol and "n=1" underneath it. To the right of the summation symbol is x^n/5n! How would you find the radius of convergence and

83. ## Chemistry

A scuba tank contains heliox, a special breathing gas composed of 5.0% oxygen and the remainder helium, for use by divers that spend extended amounts of time at depth underwater. The volume of the tank is 20 L and the pressure within it is 1500 lb/in2.

84. ## economics

3. The following facts characterize the furniture industry in the United States:39 a. The industry has been very fragmented, so that few companies have the financial backing to make heavy investments in new technology and equipment. b. In 1998, only three

85. ## Chemistry-Acids

Write a balanced chemical equation to show the reaction that occurs when each weak acid reacts with water. (Omit states-of-matter from your answer. Use the lowest possible whole number coefficients.) (b) HCHO2 I've gotten a and c correct, and from that I

86. ## science

A 80 kg firefighter climbs flight of stairs 6 meter high in 10 seconds. How much work is required by the firefighter?

87. ## Electrical trade theory N2

What are the functions of the brushes in a dc motor?

88. ## Algebra

Robert needs to cut for shelves from a board that is 2.5 m long. the second shelf is 18 cm longer than twice the length of the first shelf. the third shelf is 12 cm shorter than the first shelf. the remaining shelf is 4 cm longer than the first shelf. if

89. ## Science

How does the sun's gravitational attraction to the earth compare to that of the moon?

90. ## Science

On what sides does a "bulge" in the earth's oceans appear on the earth?

91. ## chemistry--last time i promise

CO(g) + H2O(g)-->CO2 + H2 (g) reaction occurs in a 2.0 Ll reactor at 800 degrees celsius. The reaction conditions are such that a complete conversion of reactants into products results. The reactor is charged initially with 5.0 atm of CO and 8.0 atm of

97. ## physics

Bill has a mass of 66.9 kg. Jane has a mass of 58.8 kg. If they are seated 2.2 m apart, how much gravitational force attracts them?

98. ## science

The mass of a beaker containing a sample of sodium dichromate was determined to be 68.9 g. After transferring a sample it weighed 56.424 g.Determine the mass (g) of sodium dichromate transferred to the correct number of decimal places

99. ## Math trigonometric Identities

Is this correct? (sinx - cosx)^2 = 1 - 2sinxcosx LS = sin^2x - 2sinxcosx + cos^2x = 1 - cos^2x - 2sinxcosx + cos^2x = 1 - cos^2x + cos^2x - 2sinxcosx = 1 - 2sinxcosx LS = RS

100. ## science

750N diver does a triple somersault off a 10m platform. If it takes 1.5sec. to hit the water. What is the diver's power?

101. ## Math

If tan A = a / b, a (is greater than sign) 0, b (is greater than sign) 0, and 0 is (less than sign) A (is less than sign) pi / 2, then what is cos A? a. a / b B. b / a C. a / radical(a^2 + b^2) D. b / radical(a^2 + b^2) E. radical(a^2 + b^2) / b

102. ## Math

You draw five cards from a standard deck of 52 cards. P(heart) = 4/5 (fraction). What type of probability is illustrated and why? Theoretical; the result is based on the number of possible outcomes** Theoretical; the result is found by repeating an

103. ## Physics

Prove that if an object is at a distance of twice the focal length from a lens the image is the same size as the object. Show this using an algabraic method.

104. ## Math

The measure of each interior angle of a regular polygon with n sides is [(n - 2)180 / n] degrees. What is the measure of each interior angle of a regular polygon with n sides, in radians? A. (n - 2)pi / 4n B. (n - 2)pi / 2n C. (n - 2)pi / n D. (n - 2)2pi /

105. ## Math

The solution set of radical(x - 1) (is greater than sign) 5 is the set of all real numbers x such that: F. x (is greater than sign) 4 G. x (is greater than sign) 6 H. x (is greater than sign) 24 J. x (is greater than sign) 25 K. x (is greater than sign) 26

106. ## Earth Science

the magnification of a telescope is changed by changing what? my answer is the eyepiece

107. ## science

What is the major difference between how water and nutrients are carried in a plant and how water and nutrients are carried in the human body?

108. ## Statistics

The estimate of the population proportion is to be within plus or minus 0.06%, with a 99% level of confidence. The best estimate of the population proportion is 0.22. How large a sample is required? Round answer to the next whole number.

109. ## chemistry

how many grams of potassium carbonate are in 75.0ml of a 2.44M solution?

110. ## Math HELPPP!

Andrew's dog Bubba has an exercise area behind the house. A stake in the ground has a 12 foot rope tied to it. The other end of the rope is fastened to Bubba's collar. If Bubba travels in a circular path around the stake. What is the largest Circumference

111. ## Math Trigonometric Identities

Is this correct? (sinx - cosx)^2 = 1 - 2sinxcosx LS = sin^2x - 2sinxcosx + cos^2x = 1 - cos^2x - 2sinxcosx + cos^2x = 1 - cos^2x + cos^2x - 2sinxcosx = 1 - 2sinxcosx LS = RS

112. ## Math Trigonometric Identities

1/sinx - sinx = cosx/tanx

113. ## Calculus max/min

d=0.767. There are two parallel sidewalks that are separated by the park that is 600 feet wide. You are standing on the south sidewalk facing east. On the north sidewalk, 2000 feet ahead of you, is a bus stop. You can walk on the sidewalk at 5.5+d feet per

114. ## Math--ONE QUESTION

Use arrow notation to describe the translation of point P(-9 , 8) to point (-14, 0). (x,y) -> (x + 5,y -8) (x,y) - > ( x - 8, y + 5) (x,y) -> (x - 5, y + 8) (x,y) -> (x - 5, y - 8 )

115. ## physics

A cube has a density of 2200kg/m3 while at rest in the laboratory. What is the cube's density as measured by an experimenter in the laboratory as the cube moves through the laboratory at 81.0{\rm \\%} of the speed of light in a direction perpendicular to

116. ## Chemistry

How much heat is absorbed by a 2966 kg granite boulder as energy from the sun causes its temperature to change from 3°C to 31°C? 1000 g = 1 kg

A wedge is cut from a right circular cylinder of radius r by two planes, one perpendicular to the axis of the cylinder and the other making an angle (beta) with the first. Find the volume of the wedge by slicing perpendicular to the y-axis. Please show all

118. ## Chemistry

would you classify 2C(s) + H2(g) ---> C2H2(g) +227.4 as endothermic or exothermic? Why?

119. ## education

The children’s performance in relation your main objective listed on the activity plan what is this question asking. example please

120. ## Chemistry

If you have a sample of gas with a volume of 15mL and it changes to 25mL , what would be the new pressure if the original pressure was 5.0 atm ?

121. ## Physics

Given an object distance of 48[mm] and a thin-lens focal length of 110[mm], then what is the image distance? What is the scale factor (M) of the image seen in the previous question?

122. ## Chemistry(difficult)

A moon rock collected by a U.S. Apollo mission is estimated to be 3.70 billion years old by uranium/lead dating. Assuming that the rock did not contain any lead when it was formed, what is the current mass of 206Pb per 1.185 g of 238U in the rock? The