1. science help plzzz

1. Which of the following statements best defines tides? (1 point) when waves get bigger because of an approaching storm the rise and fall of ocean water that occurs about every 12.5 hours the rise of ocean water that occurs 12 times a day a giant wave

please check these answers please 1. Which region of Mexico are sinkhole most likely to be found? A. Mexico plateau B.Baja California C.sonoran desert D.Yucatan peninsula(I PICK THIS) 2.what effect does altitude have on Mexico's climate? A. as altitude

3. Chemistry

Which gas diffuses most rapidly at STP? Ar, Kr, N2, or O2? Why?

4. algebra

A science teacher has a supply of 50% sugar solution and a supply of 80% sugar solution. How much of each solution should the teacher mix together to get 105 mL of 60% sugar solution for an experiment ?

5. Chemistry

Heat is given off when hydrogen burns in air according to the equation: 2H2 + O2 ---> 2H2) What is responsible for the heat? I know the answer is froming hydrogen-oxygen bonds gives off energy, but why?

6. English

Can someone please check my answers? Which of the following settings are evident in Unit 4's stories of Twain, Jewett, and Chesnutt? Check all that apply. American West* pos-Civil War South* New England* Gold Coast

7. Algebra 1--Three Word Problems (Reiny or Kuai)

Can anyone thoroughly explain how to solve these problems as well as how to graph them? 1. Linda works at a pharmacy for \$15 an hour. She also baby-sits for \$10 an hour. Linda needs to earn at least \$90 per week, but she does not want to work more than 20

8. physics

A spring of stiffness 127 N/m, and with relaxed length 0.19 m, stands vertically on a table, as shown in the figure. Instead of compressing the spring with a heavy block, with your hand you push straight down on the spring until your hand is only 0.14 m

9. social studies

please can someone answer these there destroying me !!! 1. Which region of Mexico are sinkhole most likely to be found? A. Mexico plateau B.Baja California C.sonoran desert D.Yucatan peninsula 2.what effect does altitude have on Mexico's climate? A. as

10. Chemistry

Iron combines with oxygen and water from the air to form rust. If an iron nail were allowed to rust completely, one should find that the rust weighs: I know the answer is the rust should way more than the nail it came from but can someone explain why

11. new mexico histoy

1. Why does New Mexico have a varied climate? (1 point) It stretches along a long coastline. Part of its border lies along Mexico. Its physicalfeatures divide the land into different regions. Its land is mostly flat so weather moves quickly. 2. Which New

12. English 12

Explain how a word can be a morphemic noun and a syntactic adverb in the same sentence.

2. Read the following excerpt from “All Together Now”: What can parents do? We can put our faith in young people as a positive force. I have yet to find a racist baby. Babies come into the world as blank as slates and, with their beautiful innocence,

14. maths

A man spends 80% of his income. His income increased by 25% and his expenditure increased by 10%. By how much did his savings increase?

15. maths

plz help me get this?express the ratio \$6 : 30c as a fraction in its lowest term

16. math

a pit is dug in the shape of a cuboid with dimensions 10m*8m*3m. the earth taken out is spread evenly on a rectangular plot of land with dimensions 40m*30m. what is the increase in the level of the plot.

17. social studies

I provided my answers and if they are wrong can you correct them?i know nothing about this subject..thanks 1. Which region of Mexico are sinkhole most likely to be found? A. Mexico plateau B.Baja California C.sonoran desert(I PICK THIS) D.Yucatan peninsula

18. Physics

A cubical block of wood 0.100 m on a side and with a density 550 kg/m^3 of floats in a jar of water. Oil with a density of 750 kg/m^3 is poured on the water until the top of the oil layer is 0.035 m below the top of the block. 1. How deep is the oil layer?

19. Calc

You want to make a rectangular box, open at the top, by cutting the same size square corners out of a rectangular sheet of cardboard and then folding up the sides. The cardboard measures 10 in. by 12 in. What are the dimensions of the box that will have

20. Math

a.) Solve a - 9 = 20 b.) Solve b - 9 > 20 c) How is solving the equation in part a similar to solving the inequality in part b? d.) How are the solutions different?

21. MATH

Briana is allowed to watch no more than 5 hours of T.V a week. So far this week, she has watched 1.5 hours. Write and solve an inequality to show how many hours of T.V Briana can still watch this week.

22. Health

Harvey has his heart set on making the state finals for his track team in the 100 yard dash. Although Harvey knows there are many factors to improving his time and becoming an elite sprinter, one skill is paramount to his success. This skill is used at the

23. Math ~CHECK MY WORK PLEASE~

Briana is allowed to watch no more than 5 hours of T.V a week. So far this week, she has watched 1.5 hours. Write and solve an inequality to show how many hours of T.V Briana can still watch this week. MY ANSWER: T

24. math

complete the sequence of numbers 4.25, 5, 5.75, _______, ______ ?

1. An amusement park ride has a diameter of 16 meters and revolves at 15 rpm (revolutions per minute). How fast is a rider moving if she sits at the outermost part of the ride? A. 29.4 m/s B. 1.07 m/s

26. Math ~CHECK MY WORK PLEASE~

Hello, Please check my answers, with stars (*) are my answers! Please check if they are wrong please tell the right answer and why it is right (explain it) so I can understand why! Thanks! For questions 1-2, solve the inequality. 1.) x + 8 < -28 a~ x < -36

27. MATH 1 QUESTION!!!??

3. Which of the following equations has an infinite number of solutions? (1 point) a. 3x – 3 = –4x b. 2y + 4 – y = 16 c. 7x + 5 = 4x + 5 + 3x d. 6y – 2 = 2(y – 1) IS THE ANSWER A??!!!

28. Chemistry

If you add 4.6 g of sodium to water, how many molecules of H2 will be formed? (4points) 2Na(s)+2H2O(l)-->2NaOH(aq)+H2(g)

A solution is prepared by dissolving 3.44 g of sucrose, C12H22O11, in 118 g of water. a) What is the molality of the resulting solution? b) What is the mole fraction of water in this solution? B) moles of h2o=118g/18(g/mol)=6.548 mol moles of c12h22O11=

30. geometry

An ant looks to the top of a bulding at an angle of elevation of 32°. The ant then walks an additional 66 feet from the edge of the building. If the new angle of elevation from the ant to the top of the building is 22°, find the height of the building.

31. physics

A submarine is at a depth of 96.0 m under the ocean surface. The inside of the submarine is kept at atmospheric pressure. What is the net force being exerted on a circular window of the submarine that has a radius of 35 cm? The density of the ocean water

32. Geometry

A person who is 5 feet, 6 inches (5.6 feet) tall casts a shadow (from N to S) that is 12 feet long. The distance along the ground from the person (N) to the flagpole (G) is 18 feet. Find the height of the flagpole (FG) showing all calculations.

33. Calc

A gift box measures 6 in. along each edge You cut a rectangular sheet of wrapping paper to get a single piece with which you can cover the box without overlapping. What are the smallest possible dimensions of the original sheet of wrapping paper? a. 24 in.

34. Accounting 212

Wings Inc., a software development firm, has stock outstanding as follows: 25,000 shares of cumulative 1%, preferred stock of \$40 par, and 50,000 shares of \$120 par common. During its first four years of operations, the following amounts were distributed

35. Finance

An employee makes an hourly rate plus any tips they earn. This tip employee made a total of \$400 by working 28 hours last week. If \$253 of their total earnings was their tips, what is their hourly rate of pay?

36. English 12

Both Ben and he will graduate at the same time. subject predicate nominative appositive

37. Algebra II

If you were to use the substitution method to solve the following system, choose the new system of equations that would result if x was isolated in the third equation. 2x - 3y + z = -4 2x - 2y + z = -1 x - 2y + 3z = -6 5x + 7y = 6 y - 4 = -1 -y - 1 = -4

38. TSU

At the beginning of the year, Addison Company's assets are \$254,000 and its equity is \$190,500. During the year, assets increase \$80,000 and liabilities increase \$44,000. What is the equity at the end of the year?

39. Geometry

Use the figure of a square pyramid to answer the following questions. a.) Find the total surface area of the pyramid. b.) Find the volume of the pyramid. Do not answer them. I know How to find the answer. Surface Area is squared right?

40. math

Part A: Does the table represent a relation that is a function? Justify your answer by using the values shown in the table. (4 points) Part B: The function f(h) shown below represents the number of tennis matches Diana won each month when she practiced

41. economic math

Imagine that you own a small business and that you have to decide how much of your product to sell every year, and which technology to use to produce it. Your market research suggests that the price at which you will be able to sell each unit of your

42. Health-Ms. Sue

Coach Downey had his team practice bunting while working on basic fundamentals. Nearly all of the bunts were reaching the fielders so quickly that the base runners were easily thrown out before they could advance. Coach Downey emphasized better bunting

43. math

Translate the word phrase into a math expression. Sheila buys some boxes of pens, with 20 pens in each box

44. Math

The number of peaches, p, is three less than half the number of grapes, g. Which expression represents the number of peaches in terms of the number of grapes?

45. MATH

a.) Solve a - 9 = 20 b.) Solve b - 9 > 20 c) How is solving the equation in part a similar to solving the inequality in part b? d.) How are the solutions different?

46. physics

A weight lifter lifts a set of weights a vertical distance of 2.07 m. If a constant net force of 335 N is exerted on the weights, how much net work is done on the weights? Answer in units of J

FOR AN INSTALLMENT LOAN, A FORMULA IS USED TO FIND THE TOTAL AMOUNT OF INSTALLMENT PAYMENTS. THE FORMULA IS TOTAL INSTALLMENT PAYMENTS = INSTALLMENT PRICE - DOWN PAYMENT. THE FORMULA CAN BE WRITTEN IN SYMBOLS AS T = P - D. SOLVE THE FORMULA FOR D.

48. Physics

I'm super confused about how to approach this problem. Please help. A ball of Styrofoam (ρ = 100 kg/m3) is totally submerged in water. The ball has a mass of 300.0 g What is the volume of the ball? If a string holds the ball when it’s in the water,

49. Grammatical errors?

Dear Prospective Host Teacher and Principal: Thank you for allowing me to be a part of your learning community. I am quite jubilant to have my first PPIE experience with you. Education has interested me for a large portion of my life and I often find

50. Physics

A can of gasoline has a rectangular base with dimensions of 13.5 cm by 13 cm. If there are 3 liters of gasoline in the can, how much does the surface of the gasoline rise (in mm) in the can when the temperature is raised by 45C? The coefficient for volume

51. math

in a class there are 35 students.25 of the students can play basketball ,and 15 of the students can play football .5 of the students cannot play either of these.how many students can play both?

52. Physics

An aluminum calorimetry cup [mc = 0.6 kg, cc = 0.22 kcal/(kgC)] is filled with water [mw = 2.4 kg, cw = 1 kcal/(kgC)]. It is at a temperature of 30C. A sample of an unknown substance with mass mm = 2.34 kg, originally at a temperature of 210C, is added.

53. algebra

the number of people that can be seated in a lecture hall varies directly with the number of rows of seats. if 72 people can be seated in 4 rows, write a direct variation equation to describe the number of people y that can be seated in x rows. then graph

54. MATH

ALLY HAD A GAME WITH 2 GROUPS OF PLAYING TILES. THE FIRST GROUP OF 24 TILES HAD ALL THE LETTERS OF THE ALPHABET EXCEPT U AND Y. EACH TILE HAD 1 LETTER ON IT. THE SECOND GROUP OF 5 TILES HAD THE NUMBERS 1 THROUGH 5, WITH 1 NUMBER ON EACH TILE. IF ALLY DREW

55. math

how many liters of a 5% solution of salt should be added to a 25% solution in order to obtain 1120 liters of a 22% solution

56. Math

Which of the following equations has an infinite number of solution? A. 3x - 3 = 4 -4x B. 2y + 4 - y = 16 C. 7x + 5 = 4x + 5 +3x D. 6y - 2 = 2 (y-1)

57. Health

Harvey has his heart set on making the state finals for his track team in the 100 yard dash. Although Harvey knows there are many factors to improving his time and becoming an elite sprinter, one skill is paramount to his success. This skill is used at the

58. Adult development and life assisment

How do you use the Bronfenbrenner's ring on getting married to examine the influence?

59. Chemistry

Assume a baker of pure water has been boiling for 30 minutes. What is in the bubbles in the boiling water? Answer: water vapor. WHY?

60. math

Four runners ran the relay, Bill ran his lap in 22.738 seconds, Troy ran in 21.874 seconds, Grace ran in 20.32 second, and Jessica ran 19.047 seconds. Estimate the team's total time to the nearest tenth of a second

61. Spanish

Can somebody help with my Spanish review? Combina lógicamente las palabras de vocabulario de las dos columnas. a. la caza b. el boxeo c. penalizar d. el/la jinete e. la cancha f. transnochar g. el campamento h. los naipes 1. el arco y la flecha (A) 2. la

62. Chemistry

Hey can anyone help me solve these questions 1. Balance K2Cr2O7 +H2C2O42H2O --> K[Cr(CrC2O4)2(H2O)2]2H2O +CO2+ H2O 2. Calculate the theoretical yield of the reaction mentioned above 3.What is the theoretical percentage by weight of Cr in the reaction

63. chemistry

How many moles of protons are present in 7.54 grams of Rubidium? Report your answer to 3 significant figures.

64. OPTICS

A real object is placed 25cm in front of a thin meniscus lens with a Power of +8.25 and index of refraction of 1.50. What is the radius of curvature of the back surface of the lens to which an image is formed 50cm away? I HAVE NO IDEA WHERE TO EVEN BEGIN?

65. MATH

1~ a.) Solve a - 9 = 20 b.) Solve b - 9 > 20 c) How is solving the equation in part a similar to solving the inequality in part b? d.) How are the solutions different? 2~ Briana is allowed to watch no more than 5 hours of T.V a week. So far this week, she

66. Algebra II

Explain, in complete sentences, which method you would use to solve the following system of equations and why you chose that method. Provide the solution to the system. x - 3y + 2z = -12 x + 2y + 3z = 6 2x - 3y - z = -2

67. Chemistry

Which of the following must be the same before and after a chemical reaction? Answer: The sum of the masses of all substances involved and the number of atoms of each type involved. WHY?

68. English

What genre is "The White Heron"? literary realism romanticism modernism colonial literature In my opinion, it is literary realism and romanticism

69. Math

Rewrite by completing the square x2 + x + 1

70. math

Using pennies, nickels, dimes or quarters, determine which kind of coin is in each circle in the answer Colum. First clue: The total value of the four coins is an odd number. Second clue: The sum of the value of the middle 2 coins is 11 cents. Third clue:

71. History

theodore roosevelt modern president?

72. Physics

A gas cylinder of volume 26 liters contains an ideal gas at temperature 27 degrees C and pressure 1920 kPa. Some of the gas leaks until the pressure falls to 1500 kPa. How many moles of gas leaked, assuming that the temperature remains constant during this

73. English

I expect a friend to be honest and a loyal person.

74. algebra

tell whether the relationship is a direct variation. explain answer.. ---------------- x -3 -6 -9 y 18 36 54 ----------------

75. Financial Management

Which of the following is NOT an example of an agency cost? A. Paying an accounting firm to audit your financial statements. B. Paying an insurance company to assure that building codes have been met for new construction. C. Paying a landscaping firm to

76. math

idk if this is supposed to be common sense but, i need help understanding why when i make this equation solve for (y) that there is a plus/minus answer. (yx)yx = 2x y = .5(sqrt(2x)/2) y = .5(-sqrt(2x)/2)

77. Logical reasoning practice

Karen baked desserts for a charity fund-raiser. She made 8 pies, 2 cakes, and 2 batches of cookies. She never baked more than two desserts in any 1 day, and she never made two of the same dessert in 1 day. What is the highest number of desserts that Karen

78. Algebra 1 Word Problem (Reiny)

How am I supposed to solve and construct a graph for this problem? 1. Sandy makes \$2 profit on every cup of lemonade that she sells and \$1 on every cupcake that she sells. Sandy wants to sell at least 5 cups of lemonade and at least 5 cupcakes per day. She

79. English

Anyone read Boys and Girls by Alice Munro ?

80. algebra

Which of the following equations when graphed would be parallel y=1/4x+2:y=4:y=4x:y=1/4x

81. American history

The last wilson's fourteen points called for A. Heavy reparations to be assessed against Germany. B. The creation of League of Nations. C. Belgian neutrality, D.the establishment of an independent Poland.

82. math

A circle is divided into four segments from the center of the circle. One segment is x degree and each of the other three segments increases by 20 degree from the previous segment. What is the value of the largest segment? a. 60 degree b. 80 degree c. 100

The measure of one angle is described as twelve more than four times a number. Its supplement is as twice as large. Find the measure of each angle using an equation.

84. algebra

y+2= -2/3(x-6)

85. Math

Let c be a constant. For what values of c can the simultaneous equations x – y = 2; cx + y = 3 have a solution (x, y) inside quadrant I

marigold question

87. math

a rope has a lenght of 150 feet what is the lenght in yards of the rope

88. math

Writing to explain: The digit 5 is usually rounded up, but it can also be rounded down. How would you round the numbers in the equation 9.5 +4.7+3.2+7.5= to the nearest whole number without getting an overestimate or an underestimate?

89. calculus

i need to use implicit differentiation to find the derivative: yx+y = 8 i keep getting y'=-1-y. i already know the derivative of this, by using explicit by simplification: y(x+1)=8 y=(8)/(x+1) y'= -(8)/(x+1)^2 how do i go about doing this the right way?

90. Physics

A weightlifter manages to lift a 133 kg (that's 293 pounds, which sounds much more impressive) weight a distance of 1.4 m. How many kcal of heat energy is equivalent to this lift?

91. Language arts

Today in L.A we had to read an article about Mark Mcgwire who used steroids in baseball. As we read we had to come up with a question and answer it fir home work which is due Tuesday. My question " How did Mark Mcwire get hurt in the Mid- 1990s?" Can

92. Physics

How much (in Celsius degrees) is the temperature of 1.3 kg of alcohol raised by adding 4.1 kcal of heat? The following piece of information may come in handy: specific heat of alcohol is 0.58 kcal/kgC.

93. Earth Science

Silver has a density of 10.5 g/cm cubed, and gold has a density of 19.3 g/cm cubed. Which would have the greater mass, 5cm cubed of silver or 5 cm cubed of gold?

94. MATH

NEIL'S SOCCER TEAM CONSISTS OF 8 SOPHOMORE MEMEBERS, 14 JUNIOR MEMBERS, AND 10 SENIOR MEMBERS. IF ONE MEMBER IS SELECTED AT RANDOM TO ACT AS CAPTAIN, WHAT IS THE PROBAABILITY THAT THE CAPTAIN WILL NOT BE A SOPHOMORE?

95. science

Suppose all of the apples have a mass of 0.10 kg. If one of the apples in the bowl (C) is 1.0 meter above the ground, what is its potential energy?

96. Writing (Writeacher and/or Ms. Sue)

Have I followed the instructions accurately? Also, do either of you suggest that my writing requires any improvements? "Write several paragraphs on your experience and feeling about competition. Is it more fun to chase or be chased?" What I have written:

97. English

Identify the words in quotes. "When I made dinner for the family, they were all properly amazed." A. misplaced modifier B. subordinate clause C. complex sentence D. compound sentence A

98. english

The plane came down later than expected. In this sentence ,what part of speech is the word down?

99. English

The woman "who won the cookie competition" is my mother. A. subordinate clause B. adjective clause C. independent clause D. adverbial clause B I was in a hurry so I ate "a cold bowl of cereal" as I walked out the door. A. misplaced modifier B. noun clause

100. algebra

write an equation in slope-intercept form for the line that is parallel to the given line and that passes through the given point. y=1/2x+5:(4,-3)

101. English Help

All I know is this sentence has parallelism mistake but I don't know how to fix it! Other people believe that after a nuclear war, the world, with radiation and where there would be disease, wouldn’t be worth living in.

102. early childhood

transition planning for children with special needs should focus primarily on

103. early childhood

a major goal of a child's transition to a new program is to

104. math

A rectangle has a length of 8 and a width of 3, two squares with sides equal to the width of the rectangle are placed in the rectangle. What is the area of each square? a. 9 b. 16 c. 20 e. 25 f. 49 please answer and explain

106. American history

Who expressed the darkness and most ominous aspect of the rural counterattack of the early 1900s.

107. Math

Find an equation for the line that passes through the point (2, -5) and has slope -3

108. math

The length of a side of square S1 is x, and the length of a side of square S2 is five times larger then the area as square S1, what is y in terms of x ? please answer and explain

109. english

Have you ever wanted to give up on something before you even started? That’s how Raja felt as he squinted up at the looming mountain crowned in clouds. Then he looked back at the group of boys behind him. “Are you all ready?” one of their leaders,

110. A Peculiar Question

What does "to chased or be chased" mean?

111. Science

I really need help, what kind of renewable energy is used for hot water? I know that Geothermal heat pumps can be used to heat a house up, but what can create hot water? Thanks.

112. math

What does "its supplement is twice as large" mean?

113. algebra

graph the line y-1=3(x-1)

114. math

A triangle has angles described as followed: the first angle is four more than seven times a number, another angle is four less than the first and the third angle is twice as large as the first. What are the sizes of each angle. I got the first angle of

115. Physics

By what amount will a 178 m long concrete slab on the Mackinac Bridge contract when going from +39C to -35C? The linear expansion coefficient is 10^-5 per C.

116. English

Have you ever wanted to give up on something before you even started? That’s how Raja felt as he squinted up at the looming mountain crowned in clouds. Then he looked back at the group of boys behind him. “Are you all ready?” one of their leaders,

117. science

tell what you believe would happen if the earth suddenly stopped spinning and you were in the part of the world that had sunlight 24 hours a day. Include such things as how this would affect your sleep, work, school and crime.

118. algebra

contast of variation 8y=3x+1

119. algebra

the value of y varies directly with x, and y= -14 when x = 1/2. find y when x = -1.

120. algebra

Which of the following equations when graphed would be parallel y=1/4x+2:y=4:y=4x:y=1/4x

121. internet basics

seeing an error message when you click on a link or icon may indicate that your pc doesn't have the correct what to view the information your looking for a.accessory,b.plug in,c.isp,d.dictionary

122. english

"holding the flashlight in his hand",Marcus looked under and around the bushes to see if he spotted the missing wallet. a) prepositional phrase b) gerund phrase c) participial phrase d) appositive phrase C

123. math

For the function f(x)square 3x-2, find the value of each expression below f(1) F(9) f(4) f(0) how do i have to do ?