1. Geometry

A helicopter pilot sights a landmark at an angle of depression of 22°. The altitude of the helicopter is 1450 feet. To the nearest foot, what is the horizontal distance from the helicopter to the landmark?

2. Chemistry

How many moles of ammonium sulfate can be made from the reaction of 30.0 mol of NH3 with H2SO4 according to the following equation? 2NH3  H2SO4 ¨ (NH4)2SO4

3. Geometry

Starla is 5feet 9inches tall. To find the height of a tree,she measured her shadow and the tree's shadow. Her shadow was 8feet long when the trees shadow was 30 feet long. To the nearest foot,how tall is the tree?

4. algebra

\$11,700 is invested in a compound interest account paying 3.9% compounded quarterly. How much will be in the account after 18 years? Round your answer to the nearest cent.

5. home economics

what are the choices of career in home economics influence of orientation in home economics

6. Physics

A 3.8 kg fish swimming 1.3 m/s swallows an absent minded 1.4 kg fish swimming toward it at a velocity that brings both fish to a halt immediately after lunch. What is the velocity v of the smaller fish before lunch?

7. chemistry

What is the purpose of removing all the precipitate from inside a beaker?

what's the opposite of a professional eater

9. find the probability

the incomes of trainees at a local mill are normally distributed with a mean of \$1100 and a standard deviation of 150. what percentage of trainees earn less than \$900 a month?

10. math

Suppose that x and y vary inversely and that y=1/6 when x = 3. Write a function that models the inverse variation and find y when x = 10.

The height of 16-month-old seedlings are normally distributed with a mean of 31.5 cm and standard deviation of 10 cm. What is the height above which 75% of the seedlings have grown?

12. Chemistry

calculate the concentration of sodium benzoate that must be present in a 2.0M solution of benzoic acid (C6H5COOH) to produce a pH of 4.00. THIS IS THE ONLY INFORMATION GIVEN. I CANNOT FIND Kb ANY WHERE IN MY TEXT NOR DOES IT GIVE US A VOLUME. CAN ANYONE

13. chemistry

What is the pH for the solution made from 11.10 mL of 0.278 M HCl solution mixed with 70.90 mL of 0.1300 M ammonia solution ? Note that the pKa for NH4+ is 9.241 8.94 9.24 8.77 9.72 9.54

It is estimated that 62% of television viewers "channel surf" during commercial. A market research firm surveyed 1500 viewers. a) What is the probability that at least 940 of them were channel surfing?

15. chemistry

What is the purpose of removing all the precipitate from inside a beaker?

Identify the sentence that contains the correct form (the contraction or the possessive word). All of the stylists stations at the hair salon are furnished with posh leather chairs. All of the stylists’ stations at the hair salon are furnished with posh

17. chemistry

Calculate the density of carbon monoxide gas at standard conditions if 25.0 mL of the gas weighs 0.0329 g at 800.00 mm of pressure.??

18. general math 1

can you help me with penn foster general math 1 please exam #00701300

19. algebra

The population of humorville is 8500 people. In this town jokes travel fast. In one hour, each person who hears a joke tells three other people who have not herd it, and tells no one else. Last friday, a visitor from out of town told the police cheif a new

20. Chemistry

What is the number of moles present in 24.0 mL of 0.500M solution of sodium chloride, NaCl? How many moles are there in 456 g of calcium fluoride, CaF2?

21. SCI/275

CheckPoint #6: Water Resource Challenges Due Thursday *Post as an attachment** in your Individual Forum . Water Resource Challenges Review Ch. 10 and 11 of your text, then complete the following: Provide at least three freshwater and three ocean water

22. college cemistry

What is the pH for the solution made from 11.10 mL of 0.278 M HCl solution mixed with 70.90 mL of 0.1300 M ammonia solution ? Note that the pKa for NH4+ is 9.241 8.94 9.24 8.77 9.72 9.54

23. Chemistry

In a fixed volume container, 6*10^23 molecules of a gas exert a pressure of 12 N/m^2. If 12*10^23 molecules of gas were added to the container, what would the pressure become? PV=nRT P=pressure in atm V=volume in L T=absolute (kelvin) temperature R=0.082 L

24. To Jen

Thank you, Jen. We really appreciate your knowledgable help on the Jiskha board. Your posts are useful to many students. Are you a college student?

25. algebra

An ostrich can run 174 feet in 3 seconds.

26. physics

Several forces act on a particle as shown in the figure below (where F1 = 75.0 N, F2 = 65.0 N, θ1 = 25.0° and θ2 = 74.0°, . If the particle is in translational equilibrium, what are the values of F3 (the magnitude of force 3) and θ3 (the angle that

27. Physics

An image of a candle is produced by a convex lens 14 cm away. If the focal length of the lens is 7 cm, how far from the lens is the candle placed? (USe the thin lens equation) For this question, how would you know whether the image is virtual or real?(in

28. Physical Chem

A student added solid K2O to a 750.0 mL volumetric flask. The solid was dissolved in water and then the flask filled with water to the mark. This formed 750.0 mL of the initial KOH solution. 20.0 mL of the initial solution was transferred to another flask

29. Algebra 1A Word Problem

Can someone please help me with this Algebra problem. The equation y= -1777x + 27,153 can be used to predict the number of y of gun deaths in the U.S. x years after 2000, that is, x=0 corresponds to 2000, x=2 corresponds to 2002, x-6 corresponds to 2006,

30. MATH.

TWO series capacitors ( one 1 microFarad, the other of unknown value ) are charged from a 12 Voltage source. The 1 microFarad capacitor is charged to 8 Voltage and the other to 4 Voltage. What is the value of the unknown capacitor?

31. history

Select and list one event within each of the five historical periods or eras that stand out to you. List the events in chronological order, and identify the period or era for each event.

32. Chemistry

Calculate the pOH, pH, and percent protonation of solute in the following aqueous solution. 0.043 M quinine, given that the pKa of its conjugate acid is 8.52

Triangle ABC is an equilateral triangle.AD=10 What is the length of CD? Give your answer to the nearest whole number.

34. Math

Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb mixture that is 10% protein? Cornmeal-how many pounds:__________ Soybean meal-how many pounds:______

35. Physics

Tarzan, who weighs 880 N, swings from a cliff at the end of a 38.0 m vine that hangs from a high tree limb and initially makes an angle of 43.0° with the vertical. Assume that an x axis extends horizontally away from the cliff edge and a y axis extends

36. Math Algebra 1a

Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb mixture that is 10% protein? Cornmeal-how many pounds:__________ Soybean meal-how many pounds:______

37. geometry

i need to find the area of the trapezoid 8cm,7cm,3cm,45degrees

38. math

a shirt originally cost\$26 is on sale for 25% off. Find the sale price

39. Math

6x -5y =20 and 5y - 6x = -20 A) No Solution B) Infinity C) A Point Consistant or Inconsistant Depdendant or Independant

40. chemistry

when 0.50 L of a 1.0 M solution of Pb (No3)2 is mixed with 0.50 L of a 1.0 M solution of KI, how many moles of lead (III) iodide are formed?

41. Algebra HELP

Can someone please help me with this Algebra problem. The equation y= -1777x + 27,153 can be used to predict the number of y of gun deaths in the U.S. x years after 2000, that is, x=0 corresponds to 2000, x=2 corresponds to 2002, x-6 corresponds to 2006,

Robert has a rectangular garden that is currently 180ft^2 and has a perimeter of 54ft He wants to increase the size of his garden by 5 ft in both directions. What will be the area of his expanded garden? A) 340 B) 74 C) 135 D) 900

43. chemistry

What is the pH of a 2.62 x 10 -1 M HCN solution ? NB the pKa for HCN = 9.212. 4.90 9.21 0.58 11.32 13.42

44. statistics

1. In a biology class, your final grade is based on several things: a lab score, scores on two major tests and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 25% of your total grade, each major

45. college chemistry

In the analysis of food, the nitrogen from the protein is sometimes converted into ammonia which is titrated against a strong acid. Given that the final NH3 concentration (approximate) is 0.2M and that pKa for NH4+ is 9.2, choose the best indicator for

46. math, algebra

17. Look at the pattern below. 24, 28, 32, 36, 40, . . . Which expression represents the number in the pattern, where p is the position of the number in the pattern? 4(p + 5) 4p - 5 4(p + 4) 4p + 4

47. English

1. It is for two blocks from here. 2. It is for two stops from here. 3. It is for two miles from here. 4. It is for two kilometers from here. (Are they all grammatical?)

48. chem 140 A

The density of liquid oxygen at its boiling point is 1.14 , and its heat of vaporization is 213 . How much energy in joules would be absorbed by 3.0 of liquid oxygen as it vaporized? Express your answer numerically in joules.

49. English

Thank you very much for being so cooperative, Sra. I still have a few more sentences for you to check. 1) In the tales there were the class of the military, the clergy and the middle classes. Correction: in the tales Chaucer describes different social

50. human services agency

how and what services are provided to the hospice patients though human services most common clinical issues,in the human services. What services do you think should be added

whats the formular to find molarity and how do you do conversions? :)

Identify the complete sentence that is correctly punctuated. Most people support the sex offender registry, I worry that this information will promote discrimination. Most people support the sex offender registry; and I worry that this information will

53. eth/125

what effects have the national indian gaming association, the bureau of indian affairs, and the national congress of american indians have in reducing tribal poverty and encouraging prosperity?

54. trig

If (-2,5) is a point on the terminal side of an angle theta, find the exact value of the six trigonometric functions of theta. Then find the actual measure of theta.

Identify the sentence with the correct adjective or adverb. Dorie is the short person in the room, standing at just five feet tall. My mother has five children, and I am the oldest. Habanero chilies are more hotter than jalapeno peppers. Although Ralph's

56. Math Prob/solving

As Frank drives to work he has to pass through three lights. The probability that any light is green is 39%. Estimate the probability that exactly two lights will be green. Use the following list of digits which was taken from a table of random numbers. In

57. geometry

Is it always true, sometimes true, or never true that two complementary angles have a common vertex?

58. physics

A car with a mass of 1435 kg moves at 11 m/s. What braking force is needed to bring the car to a halt in 10 s?

59. ETH/125

Checkpoint: Legislation Legacy Resources: National Congress of American Indians Web site Country Newspaper at · Due Date: Day 5 (Friday) Please post in your Individual Forum · Post a 200- to 300-word summary of a current issue between Native Americans

60. religion

1) Write complete sentences (treat this as a mini-essay (250-300 words) and that will work to your advantage). 2) Provide specific examples (events, dates, whatever is necessary to support your claim). 3) Offer a clear connection between effect and

61. math

Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb mixture that is 10% protein? Cornmeal-how many pounds:__________ Soybean meal-how many pounds:______

62. Chemistry

What pressure will be exerted by each of the gases in the following mixture if the total pressure of the mixture amounts to 768.8 torr? 0.500 g of hydrogen; 0.245 g of oxygen; 0.335 g of nitrogen. What do I need to do??

Here was my question The mean height of 5 students is 59.4. If one of the students leaves, the mean height becomes 61. What is the height of the absent student? Heres Bob's answer but what does set them equal mean?? SOMEONE HELP! math - bobpursley,

64. geometry

the perimeter of a parallelogram is 48 inches and the ratio of the lengths of the sides is 3:5. what are the lengths of the sides

65. Math

Assuming that a typical popular music CD comprises 12 songs each of 8500 KB, what would the effective transmission speed need to be capped at in order to extend the download time to 2 hours? Express your final answer in bits per second, using scientific

66. math

Give an example of a situation where a cube-shaped box is not the most desirable shape.

67. chemistry

50.00 mL of 1.0 M HCl and 50.00 mL of 1.0 M NaOH are mixed. The temperature is observed to increase by 10.0 degrees C. How much energy (in J) was absorbed by the calorimeter? Assume a density of the reaction mixture of 1 g/mL. Specific heat of the solution

Which of the following selections contains a run-on? If none of the selections contains a run-on, select "Correct." (Points: 5) Everyone praised Matthew for his will power. He quit smoking five years ago, he still craves a cigarette from time to time.

69. Physics

A railroad diesel engine weighs 3.6 times as much as a freightcar. If the diesel engine coasts at 4.3 km/h into a freightcar that is initially at rest, how fast do the two coast after they couple together? )

70. Math

Can someone please help me with this Algebra problem. The equation y= -1777x + 27,153 can be used to predict the number of y of gun deaths in the U.S. x years after 2000, that is, x=0 corresponds to 2000, x=2 corresponds to 2002, x-6 corresponds to 2006,

71. Fin/200

What is the break-even point in bags?

72. social studies

what was the great awakening? ( exit project)

73. Health Anatomy

Male Anatomy: What is Sterility in a Male Anatomy? and also Seminal vesicle? Female Anatomy: What are the Fallopian Tubes and Endometrium? Definitions please...

74. Math

A mother is 21 years older than her new born daughter. How old will the daughter be when her age is 1/4 of her mother's?

75. MATH.

What is the value of the total capacitive reactance in each circuit? A. f = 1 kHz and C = 1.047 uF. B. f = 1 Hz, C1 = 10 uF and C2 = 15 uF. C. F = 60 Hz, C1 = 1 uF and C2 = 1 uF.

76. Calculus

What is the simplest solution to the Brachistochrone problem and the Tautochrone problem involving calculus? (I know that the cycloid is the solution but I need a simple calculus proof as to why this is the case)

77. chem

1 molar solution of Pb(NO3)2 you want 3mL of 0.5 Molar Pb(NO3)2 how much of the one molar solution do you mix with H2O to reach your goal

how do i do a proffesional business budget

79. Geometry :(

I do not understand what they want: Describe the figure or polygon produced by interpreting the symbol {5/3} a. Triangle b. star polygon c. pentagon d. none of the above

80. maths

If 1,3,4,7 is the the domain, what would the range be if 1) f(x)= 4x-1 2) f(x) x2 + 2

81. Math

Find the domain of the function g(x)= 1/6-5x I know that x is a real number but I need the domain please.

82. Math

7x+4y= -4 Is (3, -8) the solution to the equation?

83. Math

How would I make z the subject of the formulae: x=y(z-y)/z

84. Eth 125

Posts by barkie Total # Posts: 1 eth/125 Describe other measurements sociologists utilize to calculate prejudice. Can somebody please give the answer?

85. Break-Even Analysis

Healthy Food, Inc., sells 50-pound bags of grapes to the military for \$10 a bag. The fixed costs of this operation are \$80,000, while the variable coast of the grapes are \$.10 per pound.

86. Math -Data management Grade 12

10 year old kids were asked to run around the track. Their times were normally distributed with a mean of 58.3 sec. and a standard deviation of 7.1 sec. a) What percentage of times will be less than 50 seconds? b) What percentage of times will be between

87. Algebra

If you replace the equal sign of an equation and put an inequality sign in its place, is there ever a time when the same value will be a solution to both the equation and inequality?

88. education

Answer the following in 200 to 300 words: In any given multicultural classroom, what are the concerns in terms of social justice for all students? How would you address these concerns? Describe a strategy you might use to ensure that all students are

89. Calculus

"Evaluate the following indefinite integral using integration by parts: *integral sign* tan^-1(x) dx" I let u = tan^-1(x) and dv = dx. Is that right?

90. aLGEBRA

Find the domain of the function g(x)= 1/6-5x I know that x is a real number but I need the domain please.

91. M/C

an owner investment of equipment into the business would: a)have no effect on liabilities b)have no effect on owner's equity c)have no effect on total assets d)increase net income i think its "a".

92. Physics

Why does a rubbed balloon stick to the wall?

93. English

I really hope someone can tell me if my corrections are correct. As you can see, I took your advice and I corrected them myself! 1) The pilgrims arrived from different parts of society. Correction: The pigrims belong to different social classes. 2) The

94. chm140

How much heat is required to melt 26.5 of ice at its melting point?

95. Algebra 1a

Find the domain of the function g(x)= 1/6-5x I know that x is a real number but I need the domain please.

96. sci/275

research due day 2 (tuesday) wk 6 sci/275 Exercise: Final Paper Research Due Day 2 (Tuesday) Please post in your Individual Forum · Resource: Appendix A · Review the environmental issues that are covered in this course. · Choose an environmental issue

97. science

a 1200W machine operates at 120V. what is the resistance of the machine?

98. math

The total sales made by a salesperson was \$25,000 after 3 months and \$68,000 after 23 months. Predict the total sales after 42 months.

99. MATH.

Determine the ac voltage across each capacitor and the current in each branch of the circuit? 1. Vs = 10 V rms, f = 300 Hz, C1 = 0.01 uF, C2 = 0.022 uF, C3 = 0.015 uF, C4 = 0.047 uF, C5 = 0.01 uF and C6 = 0.015 uF.

100. Algebra

Can someone please explain this to me, I know the answer but can not figure out how to get it? (15)(.8)^4(1-.8)^2+(6)(.8)^5(1-.8)^1+(1)(.8)^6(1-.8)^0

101. English

I don't understand what William Wordsworth's poem, The Prelude, is about. Can anyone tell me what the main themes and ideas are about?

102. Anatomy & Physiology 1

Could someone please check over my answers, and let me know if any of them are wrong. If they are wrong could you please give me the correct answer or tell me where I could find it..Thanks in advance for any and all help.... 1. The process of breaking a

103. math

Find the other endpoint of a line segment with the given midpoint and one endpoint. Endpoint: (0, 0); Midpoint: ( 4, -2)

104. math

The cost of tuition at Johnson Community College is \$ 160 per credit hour. Each student also has to pay \$100 in fees. Write an equation that shows the relationship between the total cost, C, and the number of credit hours taken, x.

105. chemistry

An acid HA has Ka = 2.28 x 10 -4. The % ionisation of this acid in a 0.170 M solution of the acid in water is closest to 3.662 % 0.623 % 0.498 % 2.930 % 0.436 % 2.564 % i have an exam in 1 week and these are the types of questions i don't understand

106. math

three square -based prisms all have the same volume. rank them from least to greatest surface area

107. college

why is the population shape a concern when estimating a mean

2/3x- 9 =6x

109. COMM215

The teacher said they were going to grade the test over the weekend. Is it A. Pronoun shift in number B. Pronoun shift in person C. Ambiguous reference D. No error

110. algebra

8x to the third power + 27=0. solve

111. algebra 2

In a sample of 138 teenagers, 38 have never been to a live concert. Find the sample proportion for those who have never been to a live concert. * 4% * 28% * 50% * 72%

112. Justice

Differentiate between general deterrence, specific deterrence, and situational crime prevention.

113. algebra

3square root 5b^9 Product rule for radicals can someone help me.

114. Psychology

Is there any relation to Observational Learning, Defense Mechanisms and General Adaptation Syndrome, if so how ...if not please explain.

115. English

1. It is five stops from here. (What does 'it' refer to? Is 'for' missing before 'five stops'?) 2. That makes two of us. (What is the meaning of this expression?) A: I don't like this movie at all. B: That makes two of us.

116. social studies

information about the monuments visited such as konark temple,temples of kajuraho ,kailashnath temple,bhuddist sites,ranchytemple,kanchitemple we need to know who build it,location on the map,physical environment at the monuments

117. algebra

I want to make sure that I understand how to do this problem. What is the value of x if 3/2x-2=15 + x? Would the solution be 2/9?

118. math

Find the domain of the function p(x)=2(pie2) -2x+9 What is the domain of p?

119. history

Discuss, in 250 to 300-words, how one of the events has shaped today's classroom and how that event is still reflected in today's classroom. For Common School Movement in 1820-1865

120. algebra

(3-2square of 7(3+2square of 7 can someone help me please. This must turn in tonight

121. aed

How might our society be different without the advance or changes of events that happened in history between 1820-1865 common school movement

122. COM 220

nEED HELP WITH A FULL SENTENCE OUTLINE ON MEDIA VIOLENCE

y=-5/6x+4

124. criminal law

Rules of Evidence and Hearsay: 1. How do the Federal Rules of Evidence address the originality of computer data in relation to the best evidence rule? 2. Are the Hearsay Rules applied differently in cases of computer related evidence?

125. criminal law

Kelly-Frye and Daubert Decisions: Compare and contrast the elements of the Kelly_Frye and Daubert decisions. What do you think about each decision and how it pertains to the rules of evidence?

126. criminal law

choose a state and research the rules for admissibility of scientific evidence. Has it maintained Frye, adopted Daubert, or adapted its own rules? Discuss what you find.

127. Health STD

For Chlamydia, what are 3 consequences of having Chlamydia? One was that it could affect a person's relationship with someone. What are 2 others?

128. algebra

3x^2-5=16 solving equation I see no one is answer ansy problem could some please I need this problem tonight.

129. chemistry

What Causes the cap to pop off a bottle of orange juice?

130. aLGEBRA

Find the domain of the function p(x)=2(pie2) -2x+9 What is the domain of p?

131. algebra 1a

Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb mixture that is 10% protein? Cornmeal-how many pounds:__________ Soybean meal-how many pounds:______

132. English

Identify the adjective clause in the following sentence. The book that is on the floor belongs to Johnny.

133. english

i need help with my questions on the book death on ice i read it but i have bad memory and my work is due tuesday can anybody help please

134. english

ok what does writting in past tence mean , and its asking me in what respect was the adventure a new kind of sailing ship

135. grammar

Identify the adjective clause in the following sentence. The book that is on the floor belongs to Johnny.

136. algebra

Hi, how can I solve this equation using algebra? y= 9x+50, many thanks

137. Algebra

Find the domain of the function p(x)=2(pie2) -2x+9 What is the domain of p?

138. software

I became lost when we started doing conditional formatting. Now we are getting into Macros. Any ideas on an easy way to learn and apply Macros?

x-1/x+3=x+2/x-4

140. math

three quarters are what percent of three dimes in value?

141. Billing and Coding

How do you know what the main term is in a multiple-word diagnosis? Example: Acute Fulminating Multiple Sclerosis

142. Medical Records course

I know you can't give answers, but I have messaged my instructor three days ago and never got any response. Is there anyone who can clarify the given assignment? I do not want answers... thank you very much. :) Contrast the general responsibilities of

143. Spanish 3

I am using "por" correctly in this sentence?: Podré reunirme contigo la semana que viene porque por ese momento tendré más tiempo.

144. human services agency

What is the population of hospice patients that human services attend

a shipping crate contains 567 boxes of cereal. you open the top and count 12 across the front and 6 along the side. How many layers of boxes are in the crate?

146. Geometry

A wind velocity is measured by the vector (8,3).What is the direction of the vector to the nearest degree?

147. math

why are all boxes not cubed-shaped?

148. geometry

I am not sure I understand especially the part where it says "the value". If the surface area of a sphere decreases, will the value of the volume remain the same? If we decrease the radius than we should have a different volume - right?

149. Mat/116

what is the solution set {c/c

150. math-more practice problems need help!

Give the equation of the line y=x+6 that is perpendicular to the line and passes through point (0, -4).

151. algebra

8x to the third power + 27=0. solve

152. Math

Factor each trinomials. 1.m^2-mv-56v^2. Thanks

What are some characteristics of teens who use alcohol and/ or drugs? Can you help me answer this question ? thank you

154. humanities

Class - what do I mean when I use the word tonality? How is the tonality defined by the harmony and melody?

155. grammar

Air pollution normally increases along with population growth. This is a big problem for many cities