# Questions Asked onFebruary 5, 2016

1. ## Science

Hydrogen peroxide can be prepared in several ways. One method is the reaction between hydrogen and oxygen, another method is the reaction between water and oxygen. Calculate the ΔG°rxn of each reaction below? 1) H2(g) + O2(g) H2O2(l) ΔG°rxn=? (in kJ)

2. ## us history

A subversive is someone who is trying to overthrow or undermine a government or political system from within. With this in mind, explain what the cartoon's artist was trying to convey about American society in 1947?

3. ## Statistics

Sickle cell anemia is a genetic blood disorder where red blood cells lose their ﬂexibility and assume an abnormal, rigid, "sickle" shape, which results in a risk of various complications. If both parents are carriers of the disease, then a child has a

4. ## Math

Which statements are always true about regular polygons? Select all that apply. All sides are congruent •• Pairs of sides are parallel All angles are congruent •• All angles measure 90 degree Correct me if I'm wrong!!

5. ## Math

Which congruence statement says the same thing as triangle ABC is congruent to triangle DEF? (1 point) triangle ABC is congruent to triangle EFD triangle ACB is congruent to triangle DEF triangle ACB is congruent to triangle DFE•• triangle BCA is

6. ## biology

Explain the processes that take place in the stroma including the reactants going in and the products produced from these processes in (a) bright sunlight and in (b) darkness. (c) What happens over an extended period of darkness of many days? I need HELP

7. ## Math

a rug in the shape of a regular quadrilateral has a side length of 20ft what is the perimeter of the rug? 4ft 5ft•• 40ft 80ft Correct me if I'm wrong!!

8. ## i really need help and i dont ask alot so plzz

I NEED HELP WITH THIS its a TEST: 1. Which of Earth’s spheres contains most of its mass? (1 point) atmosphere hydrosphere geosphere biosphere 2. Erosion and weathering are examples of which types of forces? (1 point) constructive forces destructive

asked by the girl that has no friends
9. ## algebra

Find four consecutive terms in A.P whose sum is 72 and the ratio of product of the extreme terms to the product of means is 9:10

10. ## Math

1. Write the following reversible as a biconditional: If two perpendicular lines intersect, they form four 90* angles. A) Two intersecting lines are perpendicular if and only if they form four 90* angles. B) Two intersecting, perpendicular lines do not

11. ## Art

was marcel duchamp's reaction to the public outcry against his work nude descending a staircase (No.2)? Duchamp was crushed; he wanted to be accepted by the public Duchamp simply ignored the controversy and created more Art Duchamp was delighted; even

12. ## World History

Which statement supports the claim that the political philosophy of John Locke was as revolutionary as the scientific revolution of Copernicus? *****a. Just as Copernicus replaced the Earth with the Sun at the center of the solar system, Locke replaced the

13. ## Math

Which unit would you use to measure the amount of juice in a glass? Gallons. Quarts. Pints. (MY ANSWER) Ounces.

14. ## math college readiness

A ball is thrown from a height of 105 feet with an initial downward velocity of 9/fts . The ball's height h (in feet) after t seconds is given by the following. =h−105−9t16t2 How long after the ball is thrown does it hit the ground? Round your

15. ## World History

05.06 HC)Suppose a historian wanted to argue that the Enlightenment had a more positive influence on the American Revolution than on the French Revolution. Which statement below would be the strongest evidence for the historian's view? The French

16. ## Statistics

Achusband and wife with brown eyes who have 0.75 probability of having children with brown eyes, 0.125 probability of having children with blue eyes, and 0.125 probability of having children with green eyes. (a) What is the probability that their ﬁrst

17. ## Physics

A man uses a crowbar 1.5 meter long to lift a rock weighing 600 newton. If the fulcrum is 0.50 meter from the end of the bar touching the rock, how much effort must the man apply?

18. ## MATH

Tasha earns \$400 per week plus a commission of 10% on her weekly sales. Each week she saves of her earnings. In the expression , what does the expression 400 + 0.1s represent in this situation?

19. ## Science: Drifting Continents

Sandstone is a sedimentary rock. Which of the following characteristics would you look for in a piece of sandstone? A) Rock has sparkly or alternating color layers that are bent or folded B) Rock has layers and smaller pieces of rock in it. It also has

20. ## Art

a viewer examines a work of art in a style he normally does not appreciate. This is an example of what kind type of action? Reluctant consideration Creative consideration Respectful consideration Practical consideration••

asked by Steve h
21. ## Geometry

What is the midpoint of CD given the coordinates C(-4,8) and D(8,-4)? (0,0) (2,2) (4,4)** (6,6) Am I right?

22. ## physics

Jessica stretches her arms out 0.6 m from the center of her body while holding a 2 kg mass in each hand. She then spins around on an ice rink at 1.1 m/s.

23. ## Math

which statement is a true statement? All rectangles are squares All squares are rectangular •• Every rhombus is a rectangle Every rectangle is a rhombus Correct me if I'm wrong!!

24. ## Chemistry

A Sample of M2O3 weighing 11.205g is converted to 15.380g of MCL3, where M is the unknown metal, then what is the identity of M?

25. ## Law and ethics

A surgeon performs elective surgery on John Smith. Smith later complains to his surgeon about pain resulting from the surgery. His surgeon dismisses his complaints as not credible and eventually withdraws from the case. Smith is then treated by another

26. ## Mathematics

A rug in the shape of a regular quadrilateral has a side length of 20ft what is the perimeter of the rug? 4ft 5ft 40ft 80ft•• So this girl/ boy posted this question and I'm really sure they were wrong but is my answer right or wrong??

27. ## Math

What is the final price of a \$24 sweatshirt if there is a 20% discount applied and then a 7% sales tax added?

28. ## Health

Which of the following is part of the cycle of dating violence? (Select all the apply) Period of calm Violent Episode Making up Tension-building Can someone help?!

29. ## Math

A train leaves New York at 4:00 PM a second train leaves the same city in the same direction at 6:00 PM the second train travels 24 mph faster than the first if the second tray overtakes the first at 10:00 PM what is the speed of each of the two trains

30. ## Physics

A child bounces in a harness suspended from a door frame by three elastic bands. (a) If each elastic band stretches 0.210 m while supporting a 7.35-kg child, what is the force constant for each elastic band? (b) What is the time for one complete bounce of

asked by Bust Nuttington
31. ## Art plz correct me!!!

an artist places a notebook and pen in the gallery of his latest exhibition and asks viewers to leave comments about his work. he is trying to help audience members become what type of observers? Active observers Reluctant observers Passive observers

32. ## science

Which of the following activities would contribute the most to global warming? -driving a solar-powered car -snowmobiling around a national park(i picked) -launching an engineless glider -trekking by horseback

33. ## math

Two horizontal forces act on a wagon, 550N forward and 300N backwards. What force is need to produce a net force of zero? 500 N 300N -----> Object

34. ## Social studies

which is the best location for farming? A( east of Jordan river B( central Syria C( southern Israel D( the coast of Lebanon

35. ## Art

an environment artist created a piece in protest of trash. Anticipation negative public reaction, the artist decided to display the work anyway. what is the most likely reason? A. The artist believed that the purpose of the work was to stir up awareness B.

36. ## maths

1)Find the cube root of 27i

37. ## Art

An environment artist created a piece in protest of trash. Anticipation negative public reaction, the artist decided to display the work anyway. what is the most likely reason? 1. The artist believed that the purpose of the work was to stir up awareness 2.

38. ## physics

A charge of 16.0 nC is uniformly distributed along a thin, flexible rod of length 31.0 cm. The rod is then bent into a semicircle, evaluate the electric field strength from the centre

39. ## Math

The graph below shows the sales of a popular song each week it was in a Top 40 song chart. which statement most accurately describes the slope of the graph A. The sales increased by 1 hundred thousand every 2 weeks. B. The sales decreased by 1 hundred

40. ## math (sequence and series )

Mr. Mensah starts a job with an annual salary of \$240,every year. After working for eight years, Mr Mensah is promoted to a new post with an annual salary of \$9500 which increases by \$360 every year,calculate (a) Mr Mensah's salary in the fifteenth year of

41. ## science

which of the following is a consequence of using fossil fuels as an energy source • decreased carbon dioxide levels • increased biodiversity • increased acid rain • decreased ecosystem disruption

42. ## physics

A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.50 m/s at an angle of 18.0° below the horizontal. It strikes the ground 5.00 s later. (a) How far horizontally from the base of the building does the

43. ## Science

List at least three atmospheric properties that might change as you traveled from the Earth's surface to space. Temperature, gases, air pollutants?

44. ## physics

A figure skater glides along a circular path of radius 4.70 m. (a) If she coasts around one fourth of the circle, find the magnitude of the displacement vector. m (b) If she coasts around one fourth of the circle, find what distance she skated. m (c) What

45. ## Math

which polygons will always be irregular? Triangle Trapezoid•• Square Hexagon Correct me if I'm wrong!!

46. ## Physics

Two speakers, one directly behind the other, are each generating a 264-Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Take the speed of sound

47. ## Calculus

one top of a tower 50 m high is clock 3m in diameter. where a man 5 feet 6 inches stand on the ground so that he could have a possible view of the clock.

48. ## World History

Question 16 (Multiple Choice Worth 5 points) Please check: (05.05 LC)Which of the following is not considered a cause of the Enlightenment? increased availability of printed books the Scientific Revolution *******decline in the education system******** the

49. ## La

What is the secret to reaching someone with words?which of the columns "concrete mixers" or "the city is so big" or "Harlem night" song best use his words to create a vision or an idea of the city for you in the paragraph state your opinion into port it

50. ## general chemistry

mercury has density of 13.53 g/mL. what is the mass of 345mL of mercury? D=13.53g/mL Mass=345mL 13.53/345=0.039217391 i just do not think i am doing this right

51. ## Chemistry

Is the unbalanced reaction for copper + silver nitrate Cu + AgNO3 = Cu(NO3)2 + Ag or Cu + 2AgNO3 = Cu(NO3)2 + Ag?

52. ## Surveying

A manhole is 12 ft from the centerline of a 30-ft wide street that has a 6-in. parabolic crown. The street center at the station of the manhole is at elevation 612.58 ft. What is the elevation of the manhole cover?

53. ## MATH

How do you construct a perpendicular bisector

asked by Charlie Shuler
54. ## English

What are the reasons why boys should not help at the kitchen?

55. ## Social Studies

What country, according to most canadians, has too much influence on their culture? Great Britain *** France the United States Spain

56. ## Math

What is the final price of a textbook that costs \$107.20 with an added tax rate of 6%?

57. ## math

The Sugar Sweet Company needs to transport sugar to market. The graph below shows the transporting cost (in dollars) versus the weight of the sugar being transported (in tons). there is a graph. 1. How much does the cost increase for each ton of sugar

58. ## math (sequence and series )

Mr. Mensah starts a job with an annual salary of \$240,every year. After working for eight years, Mr Mensah is promoted to a new post with an annual salary of \$9500 which increases by \$360 every year,calculate (a) Mr Mensah's salary in the fifteenth year of

59. ## Chem

For a substance to look red, describe how it interacts with white light?

60. ## physics

Two capacitor plates are equally and oppositely charged. They are separated by 6.30 cm. An electron is released from rest at the surface of the negative plate and, at the same time, a proton is released from rest at the surface of the positive plate. Where

61. ## physics

A brick is thrown upward from the top of a building at an angle of 35° to the horizontal and with an initial speed of 15 m/s. If the brick is in flight for 2.7 s, how tall is the building?

62. ## Economics

Which of the following is an advantage of a sole proprietorship? A. It is easy to expand if it succeeds. **** B. It faces few government rules. C. It is easy to get financing to start one. D. It has the lowest federal income taxes.

63. ## word problem math

Hank has more money than Joe and Al combined. Joe has exactly twice as much money as Al. Al has more money than Steve. Hank has exactly four times as much money as Steve. None of the boys have more than 18tf. The total amount of money the fours boys have

64. ## English III (advice)

My Assignment: Write a reflective essay in which you explore a personal experience or an event and reflect on its deeper meaning. I'm between a rock and a hard place with trying to find the perfect topic for this. I know you don't know anything about

65. ## math

Rochelle deposits \$350 in an account that earns 6% annual interest, compounded quarterly. How much money will be in the account in 8 years? 350(1.06)^32 =2258.685339 Can anyone check what I'm doing is correct or not? Janet deposits %150 every month in an

66. ## English, tourism, agricutural sciences ,geographyand mathematics lit

What career or job could i do n can i go to vasity to study further with this subject

67. ## Social Studies

We read a article called, "The Coming of the Pink Cheeks" by Chief Kabongo and Richard Barbe Baker. The question that we have to answer is, What examples of eurocentrism and paternalistic attitudes can you find in the article?

68. ## Maths

A plane is flying at an altitude of 880 m. Sarah is standing on the ground and she observes the angle of elevation to the plane as 67'40'. Twenty-five seconds later the angle of elevation had changed to 24'30'. (a) How far has the plane flown in that time?

69. ## chemistry

what is the mass of an empty 75 mm test tube?

70. ## Pre-cal

What is the area of triangle ABC if a = 19, b = 14, and c = 23?

71. ## Math

Candy purchased the following items. •2 shirts that cost \$15.00 each •1jacket that cost \$28.00 she paid 4.5% sales tax on her purchase what was the total amount spent on this purchase including sales tax \$55.39 \$58.00 \$60.61•• \$44.94 Correct me

72. ## Converting Units in the Metric System

Which container could hold 80,000 milliliters

73. ## Maths

23. A group of people planned to contribute equally towards a water project which needed Ksh 200 000 to complete. However, 40 members of the group withdrew from the project. As a result, each of the remaining members were to contribute Ksh 2500. (a) Find

74. ## Help please? Math 141 (Pre-Cal) (Shapes)

Hi everyone I am lost on how to do this math problem: A. You have 180 feet of fencing with which to construct a rectangular pen. What is the maximum area you can enclose? B. Going back to part A, you decide to build your rectangular pen next to a large

75. ## physics

Three point charges are located away from a dot. charge 1 is 3 cm north of the dot and is 2.1 nC. Charge 2 is 5 cm east of the dot and is -5nC. Charge 3 is -10nC and is located 45 degrees northeast and 5.831 cm away from the dot. What is the net electric

76. ## Art

What is a Neoclassical economist characteristics of Thomas Jefferson's Monticello? Monticello is based on a complex, asymmetric plan. Monticello contains columns, porticoes, and domes used in Roman architecture. Monticello is constructed with many fanciful

77. ## Mat

How u find surface area of each figure to the nearest whole number 4in 4in 2in?

78. ## Algebra

Express in mathematical form using two variables(x,y) the sum of the numerator and the denominator of a fraction is greater by 1 than thrice the numerator

79. ## Chemistry

Explain how conc. H2so4 catalysis the speed of the reaction between salicylic acid and acetic anhydride.

80. ## math reasoning

the library charges 5 cents for the first day and 2 cents for each additional day that the book is over due if the borrower paid 65 cents in late charges for how many days was the book overdue

81. ## algebra 1

Alisha has 11 coins in her pocket. She only has quarters and dimes. The coins in her pocket add up to \$2. How many quarters does she have? How many dimes?

82. ## physics

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 22.0 m/s. The cliff is h = 38.0 m above a flat horizontal beach, as shown in the figure below. How long after being released does the stone strike the

83. ## math

jane gets 1/2 of a gold star each time she helps her teacher clean up the classroom after class. How many times would Jane need to help her teacher to earn 3 whole gold stars? Draw fraction. Strips to help.

84. ## Statistics

A distribution of test scores of 600 examinees follows a normal distriburion with an everage of 80 having a standard deviation 12, how many examinees would you expect to find above a score of 100?

85. ## Math

Systems of equations with different slopes and different y-intercepts have more than one solution. A. Always B. Sometimes C. Never I think it's B.

86. ## Physics

A person rides a motorbike 145 m along a road that slants upward at 4.5 o from the horizontal. How much higher will the rider be at the end of the trip? How far has the rider gone in the horizontal direction?

87. ## Racism Essay

How do I start off an essay about racism? I need a topic sentence.

asked by Matt Damon
88. ## algebra

Find the equation of a line that is parallel to the line y = −3x and contains the points (9,−4). Nicola

89. ## algebra

Find the midpoint of the line segment joining the points P1 and P2 P1= (5,2) P2= (-4,3) tom

90. ## math

One cell phone plan costs \$29.94 per month plus \$.10 for MB of data. Another plan costs \$32.99 per month plus \$.05 for each MB of data. For how many MBs of data will the monthly bill for be the same for both plans?

91. ## Maths

the sides of my rectangle are in a ratio 1:3. my rectangle is scaled up by a factor of 4. what is the length of my new rectangle, shown below?

92. ## Maths

A point A(4, k) and B(2, 4) subtend a right angle at the origin of the coordinate axes. Find the value of k.

93. ## Physics

A uniform electric field with a magnitude of 6100 V m−1 points in the positive x direction. Find the change in electric potential energy when a +14 μC charge is moved 5 cm in the positive x direction. Answer in joules.

94. ## MATH

Mr. Smith used 17 lengths of fence to enclose his gardens. He now needs 6 lengths of fence for a dog kennel. Show how he can remove 6 lengths of fence and still have 2 squares. Please help!Thanks!

asked by VER G.
95. ## algebra

Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) Mike

96. ## pysics

A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 16.0 m/s. The cliff is h = 25.0 m above a flat horizontal beach, as shown in the figure below. How long after being released does the stone strike the

97. ## US History

What role did the media play in the development of popular thinking related to the Spanish-American War? What is the correct role of news media in war time?

98. ## Chemistry

The vapor pressure of pure water at 10C is 9.2 torr. How many grams of MgCl2 would you need to add to 500 mL of water to drop the vapor pressure to 8.0?

asked by Andrew Smith
99. ## algebra

simplify by removing factors of 1: 2p^2+10p+12/4p^2-4p-48

100. ## Math, Help me check my answers

I took a screen shot of my answers can u tell me if i am right ht tp:/ /prntscr.c om/9zmlo2

101. ## physics

There is a thin rod of length L. The top half of the rod has a charge +Q, and the bottom half of the rod has a charge -Q. Evaluate the electric field E at a distance r = 7.40 cm if L = 7.30 cm and Q = 3.50 nC

102. ## Hydraulics and hydrology

Please i need help. QUESTION=Water flows through a pipe of diameter 300mm with a velocity of 5m/s.If the coefficient of friction is given by f=(0.015/1) + (0.08/RE^0.3). Where Re is the Reynoid number. Take kinematic viscosity of water as 0.01stoke. *Find

asked by Ekingdeft Omamode
103. ## Physics

What would the experimental value of g be if the slope of the graph represents 1/2 g and the equation is y=5.00x-.0109639087

104. ## math

The length of a rectangular garden exceeds the width by 8 feet. If the perimeter of the rectangle is 28 feet, what are its dimensions?

105. ## science

2._____ clouds form at heights of 2,000 meters or less. A.Cumulus B.Cirrus C.Cirrostratus D.Altocumulus Erosion caused by waves can destroy ____. A.Rocky shorelines B.Sandy shorelines C.Beaches D.All of the above The horizontal distance between the highest

106. ## Science

The stage of viral replication in which the viral nucleic acid is released inside the cell is ?

107. ## Geometry

Do you know how I would be able to draw figures on the computer to practice calculating perimeter and area? I want it to look like graph paper (so horizontal and vertical lines) and then make different shapes so I can practice.

108. ## Physical Education

Explain the term 'target zone' and 'training thresholds', and how they should be used.

109. ## Math

A camera costs \$175. Tia and his brother share the cost in the ratio 2:3. What is Tia's share?

110. ## chemistry

I need help in the formula to calculate these types of problems 125ml of 0.43M of HCl + 17ml of 1.8M HCl Calculate the concentrations of solutions resulting from the mixture

111. ## math

Find the equation of a line that is perpendicular to the line y = 1/4x + 5 and contains the point (-6, 0) Susan

112. ## science

co2 +H2o=c6H12o6+6H2o+6O2 in this reaction what is the reoxidation number of glucose

113. ## S.E.U

The area A of a triangle with base b and height h is given by A= 1/2 bh. Find the area when b= 22 m (meters) and h= 26 m. The area is ??? m2

114. ## Calculus

y = f(x) = x^2 - 3 x (a) Find the average rate of change of y with respect to x in the following intervals. from x = 2 to x = 3 Incorrect: Your answer is incorrect. from x = 2 to x = 2.5 Incorrect: Your answer is incorrect. from x = 2 to x = 2.1 Incorrect:

115. ## Math

I'm having some difficulty understanding finding patterns to the nth degree. Here is my problem: -1, 1/3, 7/9, 25/27, 79/81, 241/243 I recognize the pattern in the denominators is multiplying by 3 and the pattern in the numerators is that they are two less

116. ## Solving Two-Step Inequalies (Math)

solve -x + 6 > - (2x + 4).

117. ## Chemistry

1,15g of a non-volatile compound is dissolved in 75,0g of benzene. The boiling point of the solution 0,125ºC has a value greater than the corresponding pure benzene. Calculate the molecular weight of the compound.

118. ## genetics

1) Which of the following is a characteristic of RNA splicing in Eurkaryotes? a) Exon/intron boundaries are typically characterized by a 5' GU splice junction and a 3' AG splice junction. b) After splicing occurs, the U1, U2, U5, U6 snRNP complex removes

119. ## algebra

Find the x- and y-intercept of the line. -7/5x -4y = 7 A. x -intercept is -7/4; y-intercept is 5 B. x -intercept is 5; y-intercept is 7/4 C. x -intercept is 5; y-intercept is -7/4 D. x -intercept is -5; y-intercept is -7/4

120. ## algebra 2

you saved \$25000 to buy a new car in time for graduation in 2020. in 2010 you invested in a certain amount of your savings in a blue chip stock that yields 5% interest compounded monthly. find out much money you started with before you saved enough to buy

121. ## algebra

Find the distance d (P1, P2) between the points P1 and P2 P1 = (−4, 4) ; P2 = (1, 6) wayne

122. ## math/algebra

Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) shannon

123. ## English

When referring to an entire class body, such as 500 students, is it correct to say freshmen or freshman?

124. ## Physics

What would the percent error of the experimental value of g be if the accepted value is 9.8 m/s^2? The slope equation is y=.5001430132x-.0109639087

125. ## Physics

How do you calculator the percent error from a graph?

126. ## agric*life science*geography n maths literacy.

hi there! my question is which job of my subjects ?

127. ## Physics

A man goes 123km North and then 123km to south.what is his displacement?

128. ## Linear Algebra

Hi, If it asks you to create a 3x3 matrix that spans R^3 so that there is a solution for every b, how do I go about choosing numbers to be in the matrix? Thanks.

asked by Kylo Ren
129. ## Physics

Calculate the distance travelled by a car with a velocity of 30m/s and it increase its speed to 60 m/s in 2 hours.assume acceleration is constant.

asked by Grace perez
130. ## Calculus

What is the derivative of f^3(g(x)) where both are continuous functions? I used chain rule and got 3f^2(g(x))f'(g(x))g'(x) but it is not right.

131. ## commerce

Why is planning a mental exercise?

asked by Nikhat zaka
132. ## SS HELP NOW PLZZ

OK SO ALL I NEED IS LITTLE HELP ok resources led to the appearance of the industrial revolution in new england. i know its coal and wood and water i just need help explaining how i got the answer.... i will be your gf for hw long you want and i will love

asked by the girl that has no friends
133. ## Calculus

Using the definition of the derivative, find the equation of the tangent line to y=2x-1/2 at (1/2,-1) Thanks!!

134. ## precal

She doesn't know the exact route to her friends house. She knows that the route is 3 blocks to the first turn, 2 blocks to the second turn and then 1 block further. She can walk east, west or north when she leaves school and the blocks are 1/8 mile long.

135. ## Complex number

Express square root of(1-i/1+i) in form of a+bit where a and b are real numbers

136. ## shuluka

hw w ogebv vbvobs osb vqph qhf bv bvbo?

137. ## math

a recipe calls for 5/7 cup of granola. how much is needed to make half the recipe.(1/2)(5/7)= 5/14 Is this correct?

138. ## Science help please

Hello i need some help with this science project please. How long would it take to get to mars if i'm travel 600 miles per hour. Thanks :)

139. ## math

Sam buys 2 adult tickets and 3 child tickets for \$44.40.John buys 3 adult tickets and 6 child tickets for \$78.How much does a child ticket and adult ticket cost?

140. ## Physics

I drop an object from a height of 500.0 m. How long does it take to hit the ground?

141. ## R.e.

What Does It Mean That “the Word was made Flesh?” Thank you very much ..

142. ## Math

How do you DO THIS? 4+8+12+16+20... +392+ 396+ 400?

143. ## Math.

George has 2 quarters, 2 dimes and 2 nickels. Using at least one of the 6 coins, how many different amounts of money can he make?

144. ## system of equations

Suppose you are organizing a social. Let a be the fixed cost and b be the cost per person.Suppose you know it costs \$1300 for 30 people and \$2200 for 80 people. (a) Set up a system of (two) equations in terms of a and b:

145. ## Math

Use Newtons Method to find 13^(1/4) correct to four decimal places. I know the formula X_(n+1)= X_n - [f(X_n)]/[f'(X_n)]. I am not sure how to go on from there. I made the equation into y=X^(1/4), but I can't seem to figure out how to go on. Please help?

146. ## Physical Education

Describe the Cooper's 12 minute-run test. (4 marks)

147. ## Physical Education

Explain two physical reasons why players should warm up before playing sport.

148. ## chemistry

what is the bond order of oxygen

149. ## Math

What's eighteen and fourteen thousands in standard form?

150. ## chemistry

What are the names of Calcium in its ionic form the relationship of that element, in its ionic form, with our health? I understand calcium chloride is ionic form of calcium but the others what are others that have a relationship with our health?