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  1. Science

    1.)Why is Earth’s temperature just right for life? (1 point) A.)Earth’s core is hot enough to heat Earth’s surface. B.)Earth’s magnetic field creates suitable temperatures on Earth’s surface. C.)Earth’s crust is warmed by heat from the sun.

  2. Another Chem Problem

    Calculate the total number of F (Fluorine) atoms in 12.15 mol C2HBrClF3. The answer is 2.195 x 10^25 atoms, but I am not sure how they got there. Can anyone give me a hint how to get started? If needed (i'm not sure), the moleculatr mass of C2HBrClF3 is

  3. Science

    What is the main difference between mechanical and electromagnetic waves? A. Mechanical weaves involved transfers energy; electromagnetic waves do not B. Mechanical waves require a medium to travel in; electromagnetic waves do not***** C. mechanical waves

  4. Physics

    A force of 3.00N acts through a distance of 12m in the direction of the force.Find the work done. work= force *distance If force is in newtons, distance in meters, the work unit is in joules.

  5. Georgia studies

    1. whose job is it to introduce and push for the passage of bills supported by the governor? A. president pro tempore. B. speaker of the house. C. party whip. D. administration floor leader.

  6. Math

    Tickets for a play cost Php 250 for adults and Php 200 for children.The sponsor of the show collected a total amount of not more than lhp 44,000 from more than 150 adults and children who watched the play. A. What mathematical statements represents the

  7. Art

    1) How did francisco goya caricature to depict the figures in contemptuous of the insults? :The facial features of the frenchmen are exaggerated to show their confusion :The frenchman's hats are comically large to show their self importance :The frenchmen

  8. physics

    A 4.0 kg object is lifted 1.5 m. (a) how much work is done against the earth's gravity ? (b) repeat if the object is lowered insteadof lifted

  9. science

    Both carbon dioxide and water are pure substances. How are they similar to each other? A. both substances have a set ratio of atoms that cannot be separated by physical means. B. both substances have a set ratio of atoms that can be separated by physical

  10. Math Ms Sue please help me

    In the diagram, lines m and n are parallel. If m∠2 = 150°, find the measure of the following angles. lines m and n are parallel. If m∠2 = 150°, find the measure of the following angles 1. ∠4 = ? (1 point) 120º 50º 30º 150º 2. ∠6 = (1 point)

  11. P.E

    1. One of your friends plays video games for at least six hours each day and gets upset when he has to eat dinner with his family. This is a sign of? a. An anxiety disorder. b. A phobia c. Bipolar disorder d. An impulse-control disorder 2. A phobia is an

  12. physics

    While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6.93 m/s. The stone subsequently falls to the ground, which is 17.1 m below the point where the stone leaves your hand. At what speed does the stone

  13. English

    What is the purpose of a deadline? A. To make sure group discussions stay respectful on topic. B. To ensure every group member has an active role. C. To make a clear statement of what the group needs to accomplish. D. To help make sure a group knows when

  14. statistics

    The random variable W can take on the values of 0, 1, 2, 3, or 4. The expected value of W is 2.8. Which of the following is the best interpretation of the expected value of random variable W? A. A randomly selected value of W must be equal to 2.8. B.The

  15. physics

    A uniform rectangular marble slab is 3.4m and 2.0m wide.it has a mass of 180kg.its originally lying on surface flat ground with It's 3.4m*2.0m surface facing up.How much work is needed to stand it on It's short end?(hint,think about its centre of gravity)

  16. Social studies!!

    1.) which of the following were basic principles of the know-nothing party? A) anti-immigrant, anti-catholic B) less federal government regulation, no abolition C) support women's rights, prison reform ****** D) Spread the second great awakening, encourage

  17. Math

    1. Name one pair of congruent angles. (1 point) ∠PQR and ∠VST ∠PRQ and ∠SVT ∠RQP and ∠TVS ∠QPR and ∠STV 2. Name one pair of congruent sides. (1 point) Segments PR and SV Segments QR and ST Segments RP and TS Segments PQ and VS 3. Which

  18. math

    a 12.0 gallon gasoline tank holds 66.0 pounds of gasoline. If this gasoline cost $3.50/gallon, what is the cost of 1 gram of gasoline.. I need help with just the set up part.. I don't know where to start.. help please

  19. Social studies

    The presiding officer of this chamber is chosen by its members.

  20. artist

    1. The artwork pictured here best represents which message? a) Ideas and creativity can be shown with many different tools. b) It is important to use one type of tool because you understand how to use it. c) People can be limited by their ideas. d)

  21. Physic

    If a scuba diver fills his lungs to full capacity of 5.5LL when 8.2mm below the surface, to what volume would his lungs expand if he quickly rose to the surface? Assume he dives in the sea, thus the water is salt.

  22. Math

    The distance require to stop a car varies directly as the square of its speed. If 250 feet are required to stop a car traveling 60 miles per hour, how many feet are required to stop a car traveling 96 miles per hour!

  23. math

    1. Which angles are adjacent angles? (1 point) ∠GBM and ∠FBC ∠CBX and ∠FBC ∠XBG and ∠FBC ∠MBY and ∠FBC 2. The measure of ∠3 is 101°. Find the measure of ∠1. (1 point) 101° 106° 74° 79° 3. Is line l parallel to line m? Explain.

  24. Math - Help!!

    You are a member of your local movie theater’s club. Every time you see a movie at the theater, you earn 2 advantage points. When you earn 100 points, you get a free movie pass. Currently, you have 40 advantage points. Write an equation to model the

  25. language arts

    Which option is an example of a subgenre of poetry?

  26. History

    What is the purpose of government according to John Locke’s Two Treatises of Government? A) to enforce laws that dictate morality B) to negotiate treaties with other nations C) to care for the monetary welfare of society D) to protect the natural rights

  27. math

    A semi-circle sits on top of a rectangle to form the figure below. Find its area and perimeter. Use for 3.14. The rectangle is 4 inches long and 3 inches wide. The semi-circle sits on top of the rectangle on a side that is 4 inches long.

  28. social studies

    Which of the following did the Roman republic and Greek democracy have in common? A. All citizens were granted freedom to practice various religions. B. All citizens created the laws for their society. C. Citizens could participate in government by voting.

  29. career

    Which ability does the following example represent? as a financial planner, you advice people about where to invest their money. assertive%%%%%%%%%%%%%%%% persuasive systematic

  30. Math

    1. Classify the triangle according to side length and angle measurement 2. Classify the triangle according to side length and angle 3. Classify the triangle with side lengths 4,4, and 4 4. Classify the triangle with the measuring 69,42, and 68, 5.

  31. Chemistry

    If the density of ocean water at a depth of 1.00 x 104 m is 1.071 g/mL and if 20.0 g of water at that depth contains 197mg of potassium chloride, what is the molarity of potassium chloride in the sample? It wants it in M.

  32. Math

    1. Which of the following established a limited self-government to the Puerto Ricans by the United Sates? Platt Amendment*** Foraker Act Sherman Act Roosevelt Corollary

  33. Weird question science

    which of these body systems performs the function of getting rid of chemical waste? a. immune b.nervous c.skeletal d.uninary d?

  34. MATH

    1. The circle graph represents a family’s monthly budget. If the total monthly budget is $5,000, how much does the family spend on items other than food and housing? circle graph (1 point) $1,000$1,500$3,500$2,500 The following table gives the percentage

  35. math

    Mimi's market sold 24 heads of lettuce one morning. That afternoon 2/7 of the remaining heads of lettuce were sold. The number of heads left is now 1/2 of the number the market had at the beginning of the day. How many heads of lettuce were there at the

  36. English

    Choose the meaning of "delirium" ...those were pterodactyls soaring with cavernous gray wings, gigantic bats of delirium and night fever. ("A Sound of Thunder") a. blindness b. crazed thoughts*** c. hunger d. spellbound

  37. Math.

    1. Find the area of the given circle. Round to the nearest tenth. *theres a picture of a circle and the radius is 3.5* A. 22.0 cm *squared* B.38.5 cm *squared* C. 11.0 cm *squared* D. 42.8 cm *squared* 2.Find the circumference of the given circle. Round to

  38. Health

    a main function of the skeletal system is to protect internal organs allow your body to move store and produce materials all of the above

  39. math

    1.Which of the following numbers are equivalent to 20%? CHOOSE ALL THAT APPLY.!! A. 0.002 B. 1/4 C. 0.20(I PICK THIS) D. 1/5(I PICK THIS) 2.which of the following numbers are equivalent to 35%?CHOOSE ALL THAT APPLY !! A. 7/20 B. 6/20 C. 3.5 D. 0.35 (I KNOW

  40. physics

    The drawing shows an extreme skier at bottom of a ski jump. At this point the track is circular with a radius r. Two forces act on the skier, her weight mg and the normal force FN. Which relation describes how the net force acting on her is related to her

  41. chemistry

    For each trial, enter the amount of heat gained by the chemical system of ammonium nitrate, qrxn. The specific heat of water is 4.184 J/goC. Report your answer using 4 digits. The information given is: Trial # Tiwater Tf Masswater #1: 21.2 10.8 24.990 #2:

  42. physics

    A 2.5 kg block of ice at a temperature of 0.0 degrees Celcius and an initial speed of 5.7 m/s slides across a level floor. If 3.3 x 10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block is

  43. Chemistry

    The threshold frequency of sodium is 5.51 × 1014 s^−1. Calculate the kinetic energy of the electrons ejected when the surface of sodium is exposed to ultraviolet radiation of wavelength 180 nm. Not sure if I'm correct, but I got 1.1 × 10 ^18

  44. Language Arts

    1. Which of the following best describes text evidence?(1 point) A. ideas or conclusions about details that are hinted at but not stated B. information or details from a text that support an idea or analysis*** C. data on the amount of time it takes to

  45. geography

    calculate the distance between lagos (lat 4n) and cairo (lat 30n) showing all step cleanty

  46. math

    the cost of making a shirt is half of what the shirt normal sells for. Today, however, the shirt is on a 15% discount from its normal price. What is the current price of the shirt?

  47. social studies

    Which is one way that Homo sapiens differed from Neanderthals? A. They created stone tools. B. They could learn and adapt. C. They hunted for food. D. They buried their dead.

  48. Science

    1. How does Earth’s rotation cause day and night? (1 point) As Earth rotates toward the east, the sun appears to rise in the west and set in the east. As Earth rotates toward the east, the sun appears to rise in the east and set in the west. Earth

  49. ed tech

    1. What should you do at the end of each study session? (1 point) a. Leave your work area as it is. b. Put all items back where they belong and organize your notes and books. c. Put everything in drawers so your area looks clean. d. Put all papers and

  50. Geometry

    1 - Complete this statement: A polygon with all sides the same length is said to be___. a. regular b. equilateral *** c. equiangular d. convex 2- A road sign is in the shape of a regular heptagon. What is the measure of each angle on the sign? round to the

  51. math

    Which proportion can be used to determine what number is 15% of 30? 15/30 = x/100 15/100 = x/30*** 15/100 = 30/x 30/100 = 15/x Which equation can be used to determine what number, n, is 40% of 64? (40)(64) = n 40 divided by 64 = n 0.40(64) = n*** 64n =

  52. Social Studies

    I need answers to the questions: How was transportation standardized under the Qin? A Roads were the same width. B Carriages were the same height. C Everyone paid the same road tax. D Axles of carriages were the same length. Which of these phrases best

  53. English

    You are a speaker in a school's debate on the topic "boys should not help in the kitchen" write your speech for or against the motion

  54. American History

    Based on the information on the map, what can you infer about industry in the United States? A. Manufacturing was a key part of the economy in the Northeast*** B. Agriculture was the main industry in the south C. Mills in the Northeast had to be close to

  55. L.A 8TH

    For each pair of shapes, decide whether they are congruent, similar, or neither. Choose the best answer. Congruent Similar Neither Two side-side-side triangles are shown. Each side of one triangle is equivalent to the corresponding side of the other

  56. History

    which of the following were instrumental in General grants plan to end the civil war.select 2 that apply A. using generals who would obey without question***** B.engaging financial help from european allies C. destorying anything in the south that would

  57. English

    Please please please check my answers and explain to me why they are right or wrong!!! 24.) Choose the correct voice of the underlined verb. (1 point) The pitcher THREW the ball to the catcher. a.) active** b.) passive 25.) Choose the correct voice of the

  58. math

    A lighthouse flashes its light every 12 minutes.Another lighthouse flashes every 18 mins. If the two lighhouses flash together at 12:00 noon,at what time will they next flash together?

  59. Health

    Which aspect of health would this scenario affect? A friend sends you a hurtful e-mail. Social Health. Mental Health. Emotional Health. (MY ANSWER)

  60. English

    1. What state of mind is not associated with theater of the absurd? ~anxiety ~contentment ~wonder 2. Which of the following words is the best synonym for effrontery? ~confidence ~obedience ~shame 3. In "The Importance of Being Earnest,"how does Algernon

  61. Math HELP PLZZ!!

    1. To ________________ means to cut into two congruent parts. A: intersect B: bisect •• C: construct D: divide 2. Which tool is not needed to construct a perpendicular bisector? A: compass B: pencil C:protractor •• D: straightedge 3. Which point is

  62. Math

    My question is: The juice company decides to use a box to contain the juice. What is the minimum height of the box if its base measures 10cm by 12cm?

  63. English

    1.) Which of the following excerpts from Orpheus and Eurydice is an example of hyperbole? a.) ...even the ice-hard heart of Hades melted b.) ...the music he played tore at the hearts of everyone who followed. c.) ...Persephone, her face veiled by the

  64. Math

    What does it mean to get a 150% salary raise?

  65. english

    Select the correct form of the pronoun in parentheses: 1.(Who, Whom) was the first president of the United States? 2.There are few Americans (who, whom)could not answer that question. 3.George Washington, (who, whom) is known as "the father of his

  66. heath

    1. You witness two of your classmates yelling at each other in a heated argument. This is an example of (1 point) conflict. harassment. bullying. learned emotion. 2. ____________ is the use of threats or physical force to intimidate or try to control

  67. Math

    which customary unit would be best to measure the capacity of water in the dolphin tank at an aquarium A.fluid ounce B.quart C.gallon*** which customary unit would be best to measure the weight of all of your textbooks A.ounce B.pound*** C.ton which

  68. Algebra plz help

    1.Identify the domain and range of the following relation. {(3,7),(3,8),(3,-2),(3,4),(3,1)} A.Domain:{3} Range:{-2,1,4,7,8}**** B.Domain:{-2,1,4,7,8} Range:{3} C.Domain:{all real numbers} Range:{all real numbers} D.Domain:O/ Range:O/ 2.Determain whether

  69. chemistry

    how many grams of solid magnesium nitrate should be added to 5.0 grams of solid sodium nitrate in a 500 mL volumetric flask in order to produce an aqueous 0.25M solution of NO3- ions (once the flask is filled to the 500mL volume line)? No idea where to

  70. science(check answers)

    Which of the following is a correct description of a tornado A.a large swirling low pressure system that forms over that forms over the warm atlantic ocean B.A winter strom with wind speeds of at least 56 km/h and low visibility C. A violently rotating

  71. ART HELP PLEASE

    the railway by edouard manet One of the characteristics of impressionism, which is pictured here, is? formal portraits dark color theme lack of attention to light usage capturing the human experience (I thought this one) Not sure though

  72. Health

    The number of calories consumed must equal the number of calories________. a.)needed b.)burned c.)absorbed d.)wanted 2.)It is important to recognize which of the following when watching your weight so that you know what triggers your eating habits. a.)

  73. Physics

    What is the minimum energy needed to change the speed of a 1600 kg sport utility vehicle from 15.0 m/s to 40.0 m/s?

  74. science PLEASE CHECK MY ANSWERS

    1. where does the conversation current in the mantle obtain its heat energy? a. earths core and crust b. earths mantle c. earths core and mantle*** d. earths mantle 2. How do convection currents cause movement of earth's plates? a. The weathering of rocks

  75. physics

    A 1100 kg car coasts on a horizontal road with a speed of 19 m/s. After crossing a an unpaved, sandy stretch of road 32 m long, its speed decreases to 12 m/s. (a) Was the net force done on the car positive, negative, or zero? Explain (b) Find the magnitude

  76. precalculus

    Outside temperature over a day can be modelled as a sinusoidal function. Suppose you know the temperature is 80 degrees at midnight and the high and low temperature during the day are 90 and 70 degrees, respectively. Assuming t is the number of hours since

  77. Math PLZ HELP

    1. Which of the following expressions is written in scientific notation? 1. 73.4 x 105 2. 0.09 × 107 3. 80 x 103 4. 4.22 x 10–3 2. Which of the following is 0.0000000708 written in scientific notation? 1. 7.08 x 10–8 2. 7.8 x 10–8 3. 708 x 10–10

  78. Math

    solve each inequality. 1. m – 7 < 6 (1 point) m < –1 m > 1 m < 13 m < –13 2. y + 5 ≥ 7 (1 point) y ≤ 2 y ≤ 12 y ≥ 2 y ≥ 12 3. p + 12 > 9 (1 point) p > 21 p > 3 p > –21 p > –3 4. Translate the following statement into an inequality: Five

  79. Ratios of Similar Figures

    1. Write the following ratio in simplest form: 32 min : 36 min a. 8 : 9 b. 8 : 36 c. 32 :9 d. 128 : 144 2. In a sports equipment locker, there are 81 balls and 45 baseball mitts. Write the ratio of balls to baseball mitts in simplest form. a. 9 : 5 b. 10 :

  80. English

    Write a debate on the topic;Boys should not help in the kitchen.Speak for or against the motion.

  81. earth

    Atmosphere Homework! 1.Which of the following layers of the atmosphere is closest to space? 2.A barometer measures? 3. The atmosphere contains tiny solid particles called what? 4.The process by which the atmosphere slows Earth's loss of heat to space is

  82. physics

    A 0.250 kg block on a vertical spring with a spring constant of 5.00 103 N/m is pushed downward, compressing the spring 0.120 m. When released, the block leaves the spring and travels upward vertically. How high does it rise above the point of release? m

  83. English

    Identify the pronouns in each sentence. Then decide if each is nominative (N), objective (O), or possessive (P). 1. Why wasn't he invited to Anila's party? 2. I hope Anila left me directions to her house. 3. My sister will pick us up after Anila's party.

  84. physics

    how large a force is required to accelerate a 1300 kg car from rest to a speed of 20 m/s in a horizontal distance of 80 m ? I'm trying to find the formula and then plug in the correct #'s into the formula.

  85. unscramble

    If you rearrange the letters "CARNEF", you would have the name of? A) a dog B) a city C) a country D) a province

  86. spanish sra JmcGuin

    change verbs to prsent progressive example: (tu) escuchar escuchando 1. (ellas) dar estan dondo 2. (tu) beber estas bebiendo 3. (yo) bailar estoy bailando 4. (el) tomar esta tomando 5. (usted) traer esta treyando 6. (ella) leer esta leyendo

  87. Math

    n x 4/5 = 3/4 Answers A.n = 1/2 B.n =15/16 C.n =1 2/3

  88. MATHEMATICS: PERMUTATION

    A teacher has 20 boys and 10 girls in her class. In how many way can she select 6 of the children to be in a play if she must have 3 boys and 3 girls?

  89. Physics

    An internal explosion breaks an object into two fragments. One fragment is 2.35 kg moving 30 degrees north of east at 3.5 m/s and the other fragment is 2.65 kg. (a) What is the total mass of the object? (b) What is the velocity of the other fragment.

  90. Science

    Which property is unique to electromagnetic waves?(1 point) They can be controlled by the pull of gravity. They can shake structures on Earth. They can travel on the surface of water. They can travel in a vacuum. Which statement correctly describes a

  91. ELA

    When writing an argument, in what tone should the formal language be written?(1 point) a. serious tone b. emotional tone c.light-hearted tone d. exciting tone

  92. geometry

    What is the value of x knowing that the interior angle of this regular polygon is (-134x+516+2x)?

  93. calculus

    Let f be the function defined by f(x)=2x+3e−5x, and let g be a differentiable function with derivative given by g′(x)=1x+4cos(5x). It is known that limx→∞g(x)=∞. The value of limx→∞f(x)g(x) is

  94. Maths

    If a fifth degree polynomial is divide by a third degree polynomial,what is the degree of the quotient

  95. Language Art ( Check answers only)

    Read the informational text on the Olympic games. Then answer the question that follows. What do Athens, Atlanta, and Tokyo have in common? They are all locations that have hosted the Olympic Games, the world's largest athletic competition. Every two

  96. Science

    1. Which kind of data is used to make a sonar map of the ocean floor? A. the amount of spreading that occurs on the ocean floor B. the time it takes an underwater vehicle to reach the ocean floor C. the amount of light that reaches the ocean floor D. the

  97. Math

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

  98. math

    Find how many six-digit numbers can be formed from the digits 2, 3, 4, 5, 6 and 7 (with repetitions), if: the numbers formed must be divisible by 25

  99. Math

    Hak Young is tired at the end of the semester and decides he really needs a break so he pays for a one week all-inclusive trip to Disney Land with his credit card. In total the trip cost $3000 and his credit card charges 21% interest compounded monthly. He

  100. calculus

    Let f be a differentiable function such that f(4)=7 and f′(4)=15. The graph of f is concave up on the interval (3,5). Which of the following is true about the approximation for f(3.5) found using the line tangent to the graph of f at x=4 ?