1. Social studies

1. What event would most likely cause an increase in sales A. Decrease in price B. Increase in supply C. Decrease in product quality D. Increase in quality product Answer: A 2. What is stated by the law of supply A. An increase in price will cause a

2. Algebra

Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88*10^12 miles. Suppose a star is 3.2*10^12 light-years from Earth. In scientific notation, approximately how many

3. physics

2. What value did you calculate for the index of refraction of the glass block in Part 2? How does your value compare to the accepted value of 1.53? Calculate the percentage error. Different materials have distinct indexes of refraction. Explain how you

4. government

Highlight four limitations on the rights of a citizen

5. Pre calc

sin(θ − ϕ); tan(θ) = 5/12 θ in Quadrant III, sin(ϕ) = − sqaure root 10/10 ϕ in Quadrant IV I tried this numerous times can somone please help me

6. Math

which equation has (2,-1) as a solution? y=2x-1 y=x+3 y=x-3 y=-2x+1

7. Science

Place the following words into the in order gametes, sporophyte, gametophyte, and zygote. Explain how the terms are related.

8. U.S History

5. The purpose of the progressive era was to drive reform in which of the following areas. (1 point) A. Politics and goverment B. Buisness C. Social welfare and labor conditions D. All of the above.

9. social studies

Which set correctly identifies the features shown on the map 1. A Andes Mountains. B Pamps 2. B Atacama Desert C Pamps 3.A Atacama Desert D Andes Mountains 4. C Andes Mountains D Pamps i think it is 1 im not sure

10. Science

When are tides in the earth's oceans the highest

11. Math

a model rocket is launched from a roof into a large feild. The path of the rocket can be modeled by the equation y=-0.8x^(2)+12x+25.8 where x is the horizontal distance, in meters, from the starting point on the roof and y is the height in meters of the

12. Math

Is the sum of two integers always greater than the difference between them? Why or why not? Give examples to support your answer.

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13. college chemistry

The equilibrium constant for the reaction Sr(s) + Mg2+(aq) Sr2+(aq) +Mg(s) is 3.69 x 10^17 at 25 C. Calculate Ecell for a cell made up of Sr/Sr2+ and Mg/Mg2+ half cells.

14. Chemistry

Use the data in the table to calculate the equilibrium constant for the following reaction. HCOOH(aq)+ OH −(aq) equilibrium reaction arrow HCOO−(aq)+ H2O(l) HCOO is 5.9e-11 (Kb) HCOOH is 1.7e-4 (Ka) Not sure how to find the equilibrium constant given

15. SCIENCE

A stone thrown from the top of a building is given an initial velocity of 40.0 m/s straight upward. The building is 70.0m high, and the stone just misses the edge of the roof on its way down, determine (A) The time at which the stone reaches its maximum

16. chemisrty

Suppose that 0.490 mol of methane, CH4(g), is reacted with 0.640 mol of fluorine, F2(g), forming CF4(g) and HF(g) as sole products. Assuming that the reaction occurs at constant pressure, how much heat is released?

17. Physics

What is the mass of the meterstick shown in the figure (Hint: 25% of the meterstick’s mass is to the left of the fulcrum and 75% is to the right)?

18. Texas State History

What is the purpose of the NAFTA treaty?

Which statement best evaluates the results of Greece's membership in the European Union A. Greece's overall economy has improved because of increased trade. B. Greece's overall economy has improved because the euro is a strong Currency. C. Greece's overall

20. Math

Define a variable and write an expression to represent the following phrase: Seven years younger than Lisa.

21. math

An atom of gold has a mass of 3.25x10^-22.What is the mass of 8000 atoms?Express in scientific notation.

23. AP physics

search "ap waves and sound free response questions answers" into google and click on the second one that pops up. answers are on the bottom of the page. question number 23 i don't understand why it is B.

24. Math

The 24 students in Mr. Brown's homeroom sold 72 magazines subscriptions. The 28 students in Mrs. Garcia's homeroom SortIt 98 magazine subscriptions. Whose homeroom sold more magazine subscriptions per student? Explain your reasoning.

25. Math-fractions

A receipt requires 1/2 cup of flour for every batch of cookies. How many full batches of cookies can be made with 5 1/2 flour?

26. Calculus

1. Can you identify holiday periods or special events that cause the spikes in the data? 2. What holiday results in the maximum sales for this department? 3. a) Generate linear and quadratic models for this data. b) What is the marginal sales for this

27. Social studies

which of the following statements about World War 1 would be most difficult to prove and disprove a. American casualties were more numerous than in any other war. b. it was the first war in which the opposing sides used airplanes c. the U.S government

28. Literature

WHAT IS MAMA'S STRATEGY? MAMA: There is someone who wants to marry Trina. JENNY: Who'd want to marry Trina? MAMA: Mr. Thorkelson SIGRID: Peter Thorkelson? Little Peter? (She gestures a midget.) (5)MAMA: So he is hardly bigger than your Arne. Does every

29. Emily dickson

Three fact about her poet "The sky is low,the clouds are mean"

30. government

Wtat is legitimate government? Outline any four features of legitimacy? What is simple majority sysyem? Outline four demeits of the system

31. PHYSICS

A stone thrown from the top of a building is given an initial velocity of 40.0 m/s straight upward. The building is 70.0m high, and the stone just misses the edge of the roof on its way down, determine (A) The time at which the stone reaches its maximum

32. Quantitative Statistic

The following information is available.   H0 : μ ≥ 220   H1 : μ < 220   A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis

33. chemistry

How many phases and components are present in a saturated solution of Na2so4 with excess of solid is present at equilibrium with its vapour in a closed vessel

34. English

1. My hobby is chatting in a chat room. 2. My hobby is chatting in chat rooms. ------------------------------ Which one is the better of the two? Do we have to use a singuglar form or a plural form? 3. My favorite food is noodle. 4. My favorite food is

35. chemistry

In the predicted electron configuration of Molybdenum (Mo), how many electrons are in the 4d subshell? 2. How many electrons are in the 4d subshell of the Molybdenum (III) ion?

36. french 1

A wide variety of activities are enjoyed by French young people but in their schools, there are generally not programs for competitive sports. True False

37. Physics

To make ice cubes you fill am ice tray with 150g of water at 20°C. How much energy must be removed from the water to create ice cubes at a final temperature of -10C

38. English

This summer, Joel’s plan is to travel. How does the infinitive function in the sentence? A) as an adjective *** B) as a predicate nominative

39. chemistry (I have a test tomorrow)

4 Ag + 2 H2S + O2 = 2 Ag2S + 2 H2O a) What mass if silver sulfide is formed from the reaction of 0.120g of silver? b) What mass of hydrogen sulfide is needed in the same process? So I understand a, and I found the answer to be 0.138g. For b the text book

40. History

How has the united states used economic pressure to promote the spread of democracy

41. Math; Statistic

At peak periods, 15% of attempted log-ins to an email service fail. Log-ins attempts are independent and each has the same probability of failing. Ann logs in repeatedly until she succeeds. A. find the probability that Ann needs to log in at least four

42. math

Express the radius r of a sphere as a function of the volume V it encloses.

43. Trig

In which quadrant would the image of point (5,-3) fall after a dilation using a factor of -3?

44. Social studies

Does having an unusual name, such as Chastity, Englebert or Moon unit, have an effect on how a child develops? The results of some previous studies agrees with the commonsense idea that such as name could cause a child to be rejected or ridiculed and thus

45. Calculus

If y′= x(1+ y) and y > -1 , then y = The differential equation dy/dx=y/x^2 has a solution given by:

46. World history

Need help ASAP What was one result of Hitlers invasion of the soviet union. A: Germany gained access to soviet factory's and farms. B: Stalin fled to the soviet union. C: Germany was able to take control of Leningrad. D: Churchill and Stalin became allies

47. english

Which literary movement often rejects order, blurs distinctions between literature types, and uses playfulness in storytelling? Classicism Realism Naturalism Postmodernism

48. french

It is customary to greet someone on the street with "allô". False True

49. chemistry

Carbon dioxide gas is predicted to diffuse _______ times faster than sulfur dioxide gas under the same conditions.

asked by pleaase someone help me
50. Calculus

A particle is moving as given by the data below 4sin(t)-3cos(t); s(0)=0

51. Math

A rectangular family room has 204 square feet of floor space. If its length is 17 feet, how many feet wide is it? A. 18 B. 12 C. 17 D. 187 E. Not enough information is given. Answer: 204/17=12

52. science

A golf ball was hit and projected at an angle of 65° with the horizontal. If the initial velocity of the ball was 60m/s.Calculate the time the golf ball was in the air and the horizontal distance the ball travelled

53. Math

the thirteenth term of an arythmeticprogression is 27. given that the seventh term equals to three times the second term, find: the first term nd the common difference of the progression

54. Math

Fred and Jane are brother and sister. Fred is 3years older than twice jane's age. The sum of their ages is less than 36. Taking jane's age To be x years form a inequation. What can you say about jane's age.

55. College Algebra

A box contains \$7.80 in nickels, dimes, and quarters. There are 46 coins in all, and the sum of the numbers of nickels and dimes is 2 less than the number of quarters. How many coins of each kind are there? Here is my work so far: x + y + z = 46 x + y = z

56. Math

6x10^-5x700 divided by 4x10^5x1.5x10^7 simplify using scientific notation/

57. value

The sum of a non-negative number & its square is less than 12.What could the number be?

58. algebra

I need to write an inequality with the following information;I have a summer business selling book markers. They cost .75 to make and I'm selling them at \$4.00 each. Write an inequality with variables showing earnings with the sale price and the number

59. Chemistry

If 2.5x10^-3 moles of O2 were produced in the reaction, how many grams of H2O2 had to react?

60. chemistry

In the predicted electron configuration of Molybdenum (Mo), how many electrons are in the 4d subshell? 2. How many electrons are in the 4d subshell of the Molybdenum (III) ion?

61. English

1. He read the book in 5 days. 2. He read the book after 5 days. 3. He read the book within 5 days. -------------------- In a dictionary, I found that 'in' is used as 'within' in American English. Then it's confusing. Does #1 mean #3 in American English? I

62. English

1. I can't do the science project myself. It's too difficult? What does it refer to? #2 or #3? 2. doing the science project myself 3. the science project --------------------------------- 4. I'm going to Tom's house to work on the science project. 5. I'm

63. physics

A plane is cruising at 155.00 km/h increases it speed to 285.1 km/h in just 11.5 s as it makes a dive. What was the acceleration of the plane? a = vf - vi / t

64. Math

A 24-ounce bag of chips cost \$2.88. If the unit price stays the same, how much would a 40-ounce bag of chips cost?

65. algebra

To completely factor 5c^2-24cd-5d^2, I used the following steps: (5c d)(c 5d) to give terms,ignoring signs,5c^2,cd,25cd,5d^2. +cd-25cd. (5c+d)(c-5d) Please correct,if necessary,and show correct way to show this problem. Thank You.

66. Chemistry

What would be the effect on Ksp if an unsaturated solution of CaSO4 was titrated instead of a saturated solution of CaSO4. would ksp be higher, lower or the same? would ksp be higher due to the more ions available in the solution. so you would have to use

67. Calc

Suppose that f'(c)=0, f''(c)=0 and f'''(c)>0 . What, if anything, happens to the graph of the function f at x = c? Explain clearly and completely.

68. English

What's Karen doing over there. She is supposed to be studying, but it looks like she is playing Andrew's game.

69. Physical Science

An experiment was done. Pulling blocks of mass that were certain amounts of newtons. There were 2 tests done. However, they varied by a couple decimals after the second test. The results from the two tests differ slightly. Which would most likely cause the

70. stats homework

to estimate p, the proportion of all newborn babies who are male, the gender of 10,000 newborn babies was noted. if 5106 were male determine a) a 90 percent confidence interval estimate of p b) a 99 percent confidence interval estimate of p?

71. English

1. Write down four friends' names in the name column in the table. 2. You can communicate with others in groups with the five questions on the blackboard. 3. What is her mother asking of her? 4. I'd like you to introduce one of your friends in the table to

72. Maths

Please solve this trigonometric identity proof problem. I have completed 20; this is the hardest one. Many thanks (sin^3(x)-cos^3(x))/sin(x)-cos(x)=1+sin(x)cos(x)

73. chemistry

If you titrated 50 mL of HCl and 50 mL H2SO4, each of the same molarity, with NaOH. What is the numerical ratio of the volume of NaOH required for HCl compared to that for H2SO4?

74. Chemistry

If 42 mL of Cr2O7-2(aq) solution is titrated to the endpoint with 172 mL of 0.15 M Cl-, what was the concentation of Cr2O7-2 solution? I got the reaction 14 H+(aq) _ Cr2O7-2(aq) + 6 Cl- = 2 Cr+3(aq) + 3 Cl2(g) + 7 H20(l) Now I have drawn a blank. Please

75. Math

An atom of gold has a mass of 3.21x10^-22.What is the mass of 8000 atoms?Express in scientific notation.

76. History

Explain the effects of World War II, on both the United States and on Georgia. so far I've got, the economy declined,

77. Math

24. solve the system of equations algerbraically. show all of your steps. (2 points) y=x^(2)+2x y=3x+20 I'm just having trouble understanding. Please help

78. Math

Which of the following is equivalent (-2)-5 A.-2 + (-5) B.-2 + 5 C.2 + (-5) D.2-(-5)

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79. Science. HELP!!

If you decrease the frequency of a wave, how does the velocity change?

80. chemistry

If 35 mL of H2SO4 is titrated to the equivalent pint with 45 mL of 0.30M NaOH, what is the molarity of the H2SO4 before and after the reaction?

Laura is standing 9ft away from a light pole. her shadow is 6ft long. If Laura is 5ft tall, which is closest to the height of the light pole 14.8???

82. CHEMISTRY

What is the root-means square speed of Sulfur Dioxide gas at 345.0K?

83. Social Studies

Please help me find products that changed Europe during the Renaissance along with a slogan, thank you I really need help.

84. PHYSICS

If the absolute pressur at the bottom of a fresh water pond is 2.313time10^5PA.what will be the depth of the pond?

85. chemistry

How much heat in kJ is required to increase the temperature of an 87.0 g sample of water from 67oC to 136.6oC?

86. Math

Simplify the expression 131,000x0.0003 using scientific notation and express the answer in scientific notation.

87. Math

A pet shop bought a litter of puppies for \$120. All but four of them were sold, a a profit of \$5 each, for a total of \$120. How many puppies were in the litter.

88. Math

Suppose k is a continuous function so that k(-2)=3 and k'(-2)= -4 . a. Use the given information to approximate the value of k(-1.4). b. If k''(x)

89. Maxima

Hello, I'm working on a problem involving the equation v=sqrt(6*9.8(sin x-0.2 cos x)) Using maxima I have a graph but since maxima uses radians I decided to put sin and cos values multiplied by pi/180 to get degrees. So I now have a graph which looks

90. Science, Physics

Assume you are speeding down the freeway at 75 mph. The car weighs 1500 kg and the effective force of the brakes is 14400 N. The car in front of you suddenly slows down, it takes 3 seconds for the car to do so. Your initial velocity was 33.53 and your

If the abesolute pressur at the bottom of a fresh water pond is 2.313*10^5 PA,what will be the depth of the pond?

92. Physics

I am not getting the difference between distance and displacement.... without using the words scalar and vector quantity, of course, i know what they mean but still i need help with this... so please help!!!

93. maths steve reiny bob reiny!!! Help

If line 2x+y=-3 and x-2y=1 form the sides of a rectangle whose other sides meet at the point (3, 4), find the equations of the other sides and the area of the rectangle plz help show solution step

94. Science

Assume you are speeding down the freeway at 75 mph. The car weighs 1500 kg and the effective force of the brakes is 14400 N. The car in front of you suddenly slows down, it takes 3 seconds for the car to do so. Your initial velocity was 33.53 and your

95. science URGENT!!

what is the relationship does wave height have with frequency? What is the relationship does wave height have with amplitude?

96. plz i need steve can u help dr bob222 help as well

A crystal is grown by evaporating A and 8 type atoms, and then letting them condense to form the crystal. If, because of the forces involved, on A atom is twice as likely to stick to the crystal OS a B atom, what is the probability that the final crysta

97. MAth

Ifa#b=a*b-2*a*b+b*b(-a)*b+b*b then find 4#(-3) *=multiplication

98. Calculus

Apply the concepts of calculus (limits and derivatives) to describe the graph y = sec(x). Include a quality graph

99. pre-calc

Find all the real zeros for the equation p(x)=x^3+4x^2+x-6

100. MATH

The work crew for the talent show at the local high school includes these members: 2 freshmen,4sophomores,8juniors,6 seniors.If the sponsor randomly chooses 1 member of the work crew to announce the act & 1 member to control the lighting, what is the

102. Math

For what value(s) of b, if any, will the function q(x) = (x^4)/2 +b*x^2 +32x-5 have a derivative of zero AND a point of inflection at the same value of x?

103. Quantitative Statistic

The following information is available.   H0 : μ ≥ 220   H1 : μ < 220   A sample of 64 observations is selected from a normal population. The sample mean is 215, and the population standard deviation is 15. Conduct the following test of hypothesis

104. Biology

If gene frequency for PTC nontaster is 0.4, then what will be the number of heterozygotes tasters in a population?

105. Science

What is the average speed in average velocity of a tip of minute hand in 1 hour where the length of the minute hand is 10 cm

106. Math

3.3x0.006x10 divided by 12x0.005x200 simplify and express in scientific notation.

107. physics/chemistry:sir steve drbob222 steve steve

A crystal is grown by evaporating A and 8 type atoms, and then letting them condense to form the crystal. If, because of the forces involved, on A atom is twice as likely to stick to the crystal OS a B atom, what is the probability that the final crysta

108. math

A pipe is cut into twp pieces. One piece has a length of 33 inches. If the other piece has a lenght of u inches, what was the total lenght of the pipe, in inches, before cut?

109. math

The sum of the first 5 terms of a GP is 61. If the 5th term is 81 solve the value of the common ratio.

110. math

I need to paint 2 walls of 125 feet long (W)x 8 feet tall (Height). how many gallons of paint do I need to buy to cover all the walls?

111. MAth

In a set of five consecutive positive even integers, the ratio of the greatest integer to least integer is 2 is to 1. If these integers are arranged from lowest to highest, which is the middle integer in the list?

112. Ethics

Should people from wealthy countries be allowed to obtain organ transplants from individuals in developing countries? Help?

113. physics

Evaluate the following statement (T/F/N), explain: If you reduce by half the distance between two point charges, you double the magnitude of electrical force that each exerts on the other.

114. Calculus

If y′= x(1+ y) and y > -1 , then y = The differential equation dy/dx=y/x^2 has a solution given by:

115. math

Place grouping symbols in this expression so that the value of the expression is 37.Then justify your answer by simplifying the expression. 8×5-6+12÷6

116. trigonomentry prove

[sin(b)+sin(2b)]/(1+cosb+sin(2b)=tanb plz i need ur help prove for me show step

117. Physics

Point A is - 52m and point B is + 32 m. A car travels from point A to B in 1.2s. What is the speed and velocity of the car. If the car stops at B and returns to A what is the distance traveled and the displacement?

118. Physics

Why are w=fxd and E =mc2 both energy

119. math

Why is -4^2 -16, not 16? To me, -4 * -4 = 16 because a negative times a negative equals a positive. I understand -(4)^2 being negative but not without the parentheses. Thank you.

120. geography

what are the causes of dumping

121. Math1

trinomials 2n^2 + 15n + 7

122. Math1

trinomials 7d^2 + 50d + 7

123. Physics

A 30km/h (8m/s) gust of wind results in 25 N of force on a kite that pulls a 50kg kiter off her feet and drags her 8m. How much work does the kite do?

124. Physical Science

Determine how long it will take given the scenario below (in time and in distance) to react to the car in front of you. Assume that the car in front of you takes 3 seconds to change speeds. Reaction time 1.6 seconds Speed: 75 mph Initial velocity: 33.53

125. Chemistry

An electron is in the 5f orbital. What are the values or sets of values for… a. The principle quantum number (n)? b. The angular momentum quantum number (l)? c. The magnetic quantum number (ml)?

126. science(computer)

what line should i adopt after matric if i'm not good at maths???? (pakistan)

127. chemistry

why photosynthesis is considered as endothermic?

128. Precalculus

f(y)=-1/5y^4 What is the power function and constant of variation?

129. math

Laura is standing 9 ft away from a light pole, Her shadow is 6 ft long. If Laura is 5 ft tall, which is closest to the height of the light pole?

130. Ring Structures

Can someone tell me how a Beta 'L' manopyranose structure will look like?

131. Calculus

Find the anti derivative for 4/(x^2+1)

132. chemistry

3a.How many electrons are predicted to be in the 4p orbital of a bromine (Br) atom? 5 b.How many of these electrons are predicted to be unpaired? 5

133. chemisrty

Calculate the density of Argon (Ar) gas at 400.0K and 1.23 atm.

134. science

Frogs hear with their _______ lining of their mouth tongue tympanum nostrils*** I'm not so sure about this question. I went back and looked in my book but i can't find anything, I searched it to and still couldn't find anything. Could someone please help

135. Calculus

Consider the function f(x)= x^3+5 sqrt(x) Let F(x) be the antiderrivative of f(x) with F(10=-9

1) Why is it an excellent idea for anyone, to ALWAYS pay their credit card bill off, at the end of each month 2) Describe what kind of interest (simple or compound) should you look for in an investment, state why. 3) Lan-Sun just received a notice

137. Calculus

consider the function f(x) = 9/x^3 -10/x^7 let F(x) be the antiderivatice of f(x) with F(1)=) then F(x)=

138. S.S.

How was Hitler killed?

140. English

1. He grew 25 cm last year. 2. He grew by 25 cm last year. (Is 'by' deleted in Sentence 1? What is the meaning of 'by' here?)

141. MATH

Simplify the expression 20,000x0.024 using scientific expression.