Questions Asked on
September 10, 2014

  1. Ed. Tech

    Which definition below best describes the definition of theme within poetry? A. It is the pattern of rhyming lines within a poem. B. It is the underlying message that a poem conveys. C. It is the pattern of stressed and unstressed syllables in a poem. D.

  2. math

    (please solve step by step) solving equation (6x+2)/4 + (2x²-1)/(2x²+2) = (10x-1)/4x we got roots as

  3. biology

    jordan is doing a science fair project on the effect of music on the growth of tomatoes. he has two tomato plants, plant A and B, that he grows in a window and gives the same amount of water. plant A is exposed to classical music using headphones attached

  4. physics

    A kangaroo jumps straight up to a vertical height of 1.19m, how long was it in the air before returning on earth

  5. Algebra!!!! HELP

    Find a mathematical model for the verbal statement. (Use k for the constant of proportionality.) V varies inversely as the square of t. V=

  6. college algebra

    A doctor prescribes an ointment that is 4% hydrocortisone. A pharmacist has 1% and 5% concentrations in stock. How many ounces of each should the pharmacist use to make a 3-ounce tube?

  7. health

    Visiting your doctor for regular check-ups is an example of which step you might take to meet take to meet your health goals? A. gain awareness. (B). gain knowledge. C. build health skill. D. set goals.

  8. Quantitative Reasoning (math)

    One out of every five people who buys ice cream buy vanilla ice cream. If a store sells 125 ice cream cones in one day, about how many will be vanilla? I know how to solve the proportion once I set it up, but I cant figure out how to set it up

  9. math

    writing to explain explain why it is important to line up decimal numbers by their place value when you add or subtract them.

  10. Ed. Tech

    When you save documents, it is important to check the blank at the top of the navigation window to ensure you are saving your file in the correct location. A. address bar B. insert ribbon C. file type D. file name Is the answer D?

  11. Science

    Which of the following describes a relationship between science and society? (1 point) Scientific discoveries can impact human life; therefore, society must remain scientifically literate. Scientific discoveries rarely impact human life; therefore, it is

  12. Math

    Write a word phrase for each algebraic expression. 14.1 - w and z/8 - 9

  13. Algebra!!!! HELP

    Use Hooke's Law for springs, which states that the distance a spring is stretched (or compressed) varies directly as the force on the spring. A force of 265 newtons stretches a spring 0.15 meter (see figure). (a) How far will a force of 120 newtons stretch

  14. Math

    How do you know which operation to choose when solving a real life problem? Can anyone help me explain this?

  15. physics

    from a cliff of 49m high ,a man drops a stone 1s later he throes second stone . they both hit the ground at the same time . find out the speed with which he throws the second stone.

  16. Math

    The sum of 13 different positive whole numbers is 92. What are these numbers?

  17. physics

    The pilot of an airplane wishes to fly due north, but there is a 71 km/h wind blowing toward the east. (a) In what direction should the pilot head her plane if its speed relative to the air is 314 km/h? ° west of north Should the angle just be the

  18. Math

    Clue 1: When you divide me by 5, the remainder is 4. Clue 2: I have two digits. Both digits are odd. Clue 3: The sum of my digits is 10.

  19. Geometry

    Find AB in simplest form if A(0,3) and B(2,7) AB=___________ *I need help on this last problem I have! Someone please walk me through and how to get the answer

  20. chemistry

    For the electrolysis of molten potassium bromide: (a) write the equation for the reaction at cathode. (b) write the equation for the reaction at anode. (c) write the equation for the overall reaction.

  21. Chemistry

    a) Tetraphosphorus (P4), commonly known as white phosphorus, forms different compounds with chlorine (Cl2) depending on the amount of chlorine present. If chlorine is limited, phosphorus trichloride (PCl3) is formed. If there is an excess of chlorine,

  22. Math

    Compare the numbers in each exercise using an inequality symbol. 5 2/3, square root 29

  23. Chmistry

    What is the volume of a cube that has the following measurements (length 20.0 cm, width 152 mm, height 0.458 m)

  24. math

    Two cars x and y travelling side by side are subjected to constant retardations 1/2m/s and 1/6m/s.After passing a point A,they come to rest 300m before and 150m beyond a second point B.Find common velocity at A and distance AB

  25. Chemistry

    a) Tetraphosphorus (P4), commonly known as white phosphorus, forms different compounds with chlorine (Cl2) depending on the amount of chlorine present. If chlorine is limited, phosphorus trichloride (PCl3) is formed. If there is an excess of chlorine,

  26. Ed Tech

    What is rhyme scheme? A. The stressed and unstressed syllables within a poem. B. A type of poetry that has rhyme, but no rhythm (or, the pattern of lines that rhyme within a poem. C. A poem that has a rhyming meter. D.A poem consisting of ten syllables. Is

  27. Math

    Write a word phrase for each algebraic expression. 14.1 - w z/8 - 9

  28. Math

    Proportion - If a 30-foot tree cast an 18-foot shadow, find the length of the shadow cast by a 24-foot tree.

  29. Math

    How do you know which operation to choose when solving a real life problem?

  30. physics

    A ball player catches a ball 3.70s after throwing it vertically upward, what speed did he threw it

  31. science

    The measure of how much material makes up an object is the?

  32. math

    Steve, Lindsay, and Christine are the lead singers in a band. They will sing 18 songs. Lindsay will sing 8 songs. Christine will sing 6 fewer songs than Stevie. How many songs will stevie sing.

  33. algebra

    two students are playing a math game. the object of the game is to make the least possible number by arranging the given digits inside absolute value bars on a card. In the first round, each player will use the digits 3, 5, and 7 to fill in the card. One

  34. Physics1

    A vector is drawn with its tail at the origin of an xy coordinate system. In which quadrant does the vector point if the angle with respect to the positive direction of an x axis is -135°?

  35. engineering science

    An object weighing 60N rest on a slope forming an angle of 17.5 degrees with the horizontal. A force of 44N parallel to the sloping surface just moves the object upwards. Calculate the frictional force.

  36. math

    A gardener wants his garden to have a geometrical shape.he decides on the following rules for building the flower beds.1)They must all be rectangular. 2)The perimeter and area must be the same.How many different flower beds can the gardener make 1)if one

  37. Grammar

    couple of paragraph on "why children should go to school"

  38. Physics

    A commuter backs her car out of her garage with a constant acceleration of 1.40 m/s2. (a) How long does it take her to reach a speed of 1.60 m/s? s (b) If she then brakes to a stop in 0.8 s, what is her (constant) deceleration? m/s2

  39. Chemistry

    a) Tetraphosphorus (P4), commonly known as white phosphorus, forms different compounds with chlorine (Cl2) depending on the amount of chlorine present. If chlorine is limited, phosphorus trichloride (PCl3) is formed. If there is an excess of chlorine,

  40. Language Art!

    The characterization of the children is an important part of "The Story-Teller." Which of the following quotes from the story offers the best evidence for the character of Cyril being mischievous? A. The children moved reluctantly to the window. "Why are

  41. chemistry

    a) Tetraphosphorus (P4), commonly known as white phosphorus, forms different compounds with chlorine (Cl2) depending on the amount of chlorine present. If chlorine is limited, phosphorus trichloride (PCl3) is formed. If there is an excess of chlorine,

  42. math

    9x27+2×31-28=n

  43. Computer

    Each of the following is a typical feature of a fee-based internet back up service EXCEPT ______. backup to external hard drive universal access file feedback information delayed deletion

  44. math

    if it takes 8 inches of ribbon to make a bow how many bows can be made from 3ft of ribbon will any ribbon be left over if so how much

  45. physics

    a piolet wishes to fly to a city 1.20*10^3 km/h(N30E) of her present position .There is a wind of 72km/h(E),what direction (heading) should she fly and how long the trip takes?

  46. Physical science

    A silver nitrate solution is added to a solution of potassium chloride.the products formed are silver chloride and potassium nitrate 1.which product is a precipitate 2.write down the reaction in a molecular form.indicate states 3.write down the net ionic

  47. Geometry

    SP bisects

  48. Trig

    Two people decide to find the height of an obelisk. They position themselves 25 feet apart in line with, and on the same side of, the obelisk. If they find that the angles of elevation from the ground where they are standing to the top of the obelisk are

  49. Math

    13-(8-2)=13-8- There is an empty box after the equation . Pls help I don't understand!

  50. Algebra

    Round each number to the place value indicated by the digit in bold. A: 3587 5 is bold. B: 148213 the first one, one is bold. C: 23785 3 is bold. D: 2357 5 is bold.

  51. Physics

    Automotive engineers refer to the time rate of change of acceleration as the "jerk." Assume an object moves in one dimension such that its jerk J is constant. (a) Determine expressions for its acceleration ax(t), velocity vx(t), and position x(t), given

  52. algebra

    mr darwin who is found of gardening is pushing a wheelbarrow with a force of 5.0 newtons. there are 11.4 newtons worth of horse manure in the wheelbarrow. the length from the wheel to the end of the handles is 1.6m and the length of the wheel to the center

  53. finance

    A stock had returns of 8%, 14%, and 2% for the past three years. Based on these returns, what is the probability that this stock will earn more than 20% in any one given year?

  54. physics

    A car makes a 257 km trip at an average speed of 40 km/h. A second car starting 1 h later arrives at their mutual destination at the same time. What was the average speed of the second car for the period that it was in motion? a=40 d=257 km I don't know

  55. algebra

    If only natural gas is hit, the income will be $140,000. If nothing is hit, there will be no income. If the probability of hitting oil is 1/40 and if the probability of hitting gas is 1/20, what is the expectation for the drilling company?

  56. programming

    how to design a pseudo code

  57. sciece

    would the platform be equilbrium if a 100-g mass were at the 30-cm mark and a 200-g mass were at the 60-cm mark?

  58. programming

    steps in java programming

  59. physics

    A carton of juice remains intact even after you have sucked out all the drink from it. please explain

  60. math

    Sales tax is 1/16. What is the tax when retail price is 16.

  61. math

    rice seedlings will be planted to a 20 m x 25 m area at 20 cm x 20 cm spacing, with 2 seedlings per hill. if the area is a rectangle having 25 meter long rows what will be the resulting plant population density?

  62. chemistry

    Calculate the equilibrium concentrations of all three substances. Kc=1.7e-3 Q=3.6e-3 [NO]=0.0015 mol/L [O2]=0.025 mol/L [N2]=0.025 mol/L I cannot figure out the concentration for NO...please help! thank you!

  63. physics

    a pump fills a tank of capacity 300 m^3 in 5 hours.the tank is situated at a height of 20 m.if the efficiency of the tank is 65%. then calculate the power of the engine which has driven the pump.

  64. math

    The long-distance plan for an in-home phone costs 303.23 per month plus 2.18 per min for long-distance calls both within your state or between states, with no limit to the number of minutes of call time.

  65. Algebra

    If the absolute value of a negative number is 2.78, what is the distance on the number line between the number and its absolute value? can you help explain the answer. thanks

  66. Math Proof

    Let S be a non-empty subset of the real numbers that is bounded below. Define −S by −S = {− x | x ∈S }. Prove: (i) −S is bounded above. (ii) sup(−S) = − inf S .

  67. math

    Mega Mart collects sales tax equals to 1/16 of the retail price. Is the amount of tax collected proportional to the cost of an item before tax is added

  68. Math

    if the temperature is -40 degrees fahrenheit and increases 20 degrees fahrenheit after an hour. what is the current temperature?

  69. Math

    A yacht is moving at 10kmh in a south easterly direction and encounters a 3kmh current from the north. Find the actual speed and direction of the yacht.

  70. algebra 1

    the deepest point in elevation in the indian ocean is the java trench, which is 25,344 feet below sea level. elevations below sea level are represented by negative numbers. can you help write the elevation of the Java Trench? also, a mile is 5,280 feet.

  71. algebra 1

    a number and its absolute value are equal.if you substract 2 from the number, the new number and its absolute value are not equal. what do you know about the number? what is a possible number that satisfies these conditions? Can you help answer these 2

  72. Math

    helen purchased three books and received a 20% discount. She will pay $10 for shipping. Write an expression that can be used to represent the total amount paid for the three books and the shipping cost.

  73. statistics

    each of 10 men questioned 100 individuals whether X is a singer. If the answer yes has the probability 0.5. what is the number of individuals who answers assertively?

  74. math

    Juanita runs every seventh day and swims every fifth day. If Juanita runs and swims today, in how many days will she run and swim again on the same day?

  75. maths-calculus

    find the limit as x approaches infinity, -(x+1) (e^(1/(x+1))-1)

  76. math

    A recipe that makes 7 servings calls for cup of apple juice and cup of cranberry juice. How many cups of juice are there per serving?

  77. Math

    if it takes 40 seconds to cut a 10-inch by 10 inch square cake into 2 inch by 2 inch pieces, how many seconds will it take to cut a 12 inch by 12 inch square cake into 2 inch by 2 inch pieces

  78. Physics

    A pebble is thrown horizontally from the top of a 25.0 m cliff and hits the ground 11.0 m from the edge of the cliff. a. How long will it take for the pebble to hit the ground? b. At what speed the pebble was thrown initially? c. How much is the horizontal

  79. maths

    classify the following into quadrilaterals: triangle,rectangle,pentagon,hexagon,parralelogram

  80. College Physics

    How many gallons of Oil would be in a cylindrical tank that was 24 feet long and had a diameter of 6 feet if the oil was 6 inches deep at the bottom of the tank?

  81. math

    What is the factor of x^2+8x+8. thanks...

  82. World history

    what were benefits and negatives of transitioning from a nomadic society to an agricultural ?

  83. math

    What is the factor of x^2+8x+8 ? Thank you ! :)

  84. math

    Juanita runs every seventh day and swims every fifth day. If Juanita runs and swims today, in how many days will she run and swim again on the same day? She will run and swim again in ____ days.

  85. social studies

    how do u think you did today in social studies? if you had it and if your on this web site looking up social studies and how did you do today.

  86. Chemistry

    Why Mg2+ ion has smaller radius than Mg atom?

  87. Physics

    A car accelerates uniformly from rest at 3m/s(square).What is its velocity after travelling a distance of 24m?

  88. math

    Enter the sum of numbers as a product of their GCF. 27 + 36 The sum of the numbers as a product of their GCF is ____ * (____ +_____).

  89. english 10

    is this the correct punctuation My friend jumped off the diving board and shouted "look out below!"

  90. physics

    A rocket rises vertically, from rest, with an acceleration of 3.2 m/s2 until it runs out of fuel at an altitude of 730m . After this point, its acceleration is that of gravity, downward.whats the maximum altitude does the rocket reach?

  91. Critical thinking

    Since Jessica’s participation in local politics increased significantly after she joined her school’s political science club, it is clear that her involvement in that club led her to take an interest in politics. The argument above is flawed because

  92. Math

    Enter the sum of numbers as a product of their GCF. 27 + 36 The sum of the numbers as a product of their GCF is ____ * (____ +_____).

  93. physics

    What horizontal force is needed to push a hospital bed of mass 120 kg at a constant speed up a smooth sloping plane inclined at an angle of 37 degrees above the ground?

  94. Ed. Tech

    What is the rhyme scheme of the following poem? He sat upon his brand new bike Waiting for his best friend Mike. He couldn't wait to ride to school. Others would say his bike is cool. 1. a a b b 2. a b a b 3. a b c d 4. a a b a Is the answer 1?

  95. Physics

    A body weighing 980N is moving with constant speed of 5 m/s on a horizontal surface. The coefficient of sliding friction between the body and the surface is 0.25. What horizontal pull is necessary to maintain the motion?

  96. Math

    Is this right? 0 > -2

  97. Physics

    The coefficient of rolling friction between the floor and the hardened steel balls of an anesthesia trolley (anesthesia machine with ventilator and monitor) is 0.0015. If a hospital crew needs 77 N to push the trolley at an angle of 30 degrees below the

  98. Lit

    why is it important not to overuse names in dialogue?

  99. Physic

    A soldier is tasked with measuring the muzzle velocity of a new rifle. Knowing the principles of projectile motion, he decides to perform a simple experiment at the indoor firing range. The soldier hangs a target a distance of d = 113 m from the end of the

  100. heat change

    if 89 j of heat is added to a gold coin with a mass of 12 g. what is the temprature change?

  101. chemistry

    Calculate the final temperature of 34mL of ethanol initially at 13∘C upon absorption of 938J of heat. (density of ethanol =0.789 g/mL)

  102. chemistry

    A room contains 47kg of air. How many kilowatt-hours of energy are necessary to heat the air in the house from 7∘C to 26∘C? The heat capacity of air is 1.03 J/g∘C

  103. math

    What is the percentage of 17 out of 22

  104. English

    In the poem “Love after Love” by D. Walcott – not sure who self is... In the second stanza, the self is compared to a _________. stranger – my answer? mirror friend meal

  105. Science

    A hammer with a 500-g head exerts an average force of 810n on a nail speed as it drives the nail 4 mm into wall. What was the speed of the hammer head when it hit the nail?

  106. math

    convert 2 meters to centimeters 2×______=_____cm

  107. English

    If nonsense were actually said by a person, then which is correct? He told it off as "Nonsense." He told it off as "nonsense." Is punctuation correct?

  108. calc

    Consider the vector function given below. r(t) = 7t, 3 cos t, 3 sin t (a) Find the unit tangent and unit normal vectors T(t) and N(t). i found T(t) but I can't get N(t)

  109. chemistry

    A system initially contains 0.100 mol each of the three species sealed in a 10.0 L container. The temp was raised to a temp where the equilibrium constant Kc, is 12.6 for PCl3(g) + Cl2(g)-->

  110. math 12

    $identical\:squares\:are\:cut\:from\:each\:corner\:of\:a\:rectangular\:piece\:of\:cardboard,\:7\:cm\:by\:10\:cm.\:The\:sides\:are\:then\:folded\:up\:to\:make\:a\:box\:with\:an\:open\:top.\:If\:the\:volume\:of\:the\:box\:is\:25\:cubic\:centimeter,\:how\:lon

  111. math

    the width of a rectangle is two thirds its length. if the perimeter is 180 meters find the rectangle.

  112. Math

    Explain how you know if a number can be divided by 10 evenly.

  113. Physics

    Henry Heavyweight weighs 1400N and stands on a pair of bathroom scales so that one scale reads twice as much as the other. What are the scale readings?

  114. chemistry

    A system initially contains 0.100 mol each of the three species sealed in a 10.0 L container. The temp was raised to a temp where the equilibrium constant Kc, is 12.6 for PCl3(g) + Cl2(g)-->

  115. ENGR

    1. Use the axioms of probability to show the following: (a) For any event E, P{Ec} = 1 − P{E}. (b) P{∅} = 0. (c) For any events E and F, if E ⊂ F, then P{E} ≤ P{F}. (d) If the events E1, E2, and E3 are mutually exclusive, then P{E1∪E2∪E3} =

  116. math

    If bacterium divides every 20 minutes. How many will there be in a day?

  117. math

    You are running a fuel economy study. one of the cars you find is blue. it can travel 35 1/2 miles on 1 1/4 of gasoline. Another car is red. It can travel 27 1/5 on 4/5 gallon of gasoline. What is the unit rate for miles per gallon for the blue car? what

  118. Math

    For the set of ordered pairs, state the domain, range, and determine whether or not the relation represents a function. (9,9), (7,4), (1,2), (2,6), (5,0) Domain: 9,7,1,2,5 Range: 9, r, 2, 6, 0 It is a function because no x value is repeated

  119. Physics

    A tennis player hits a ball 1.6 m above the ground. The ball leaves the racket with a speed of 12 m/s at an angle 8.0 degrees above the horizontal. The net is a horizontal distance of 7.0 m away from the player and is 1.0 m high. (a.) Does the ball clear

  120. algebra

    An investment adviser invested $14,000 in two accounts. One investment earned 4% annual simple interest, and the other investment earned 2.5% annual simple interest. The amount of interest earned for 1 year was $458. How much was invested in each account?

  121. physics

    A 1.8-kg object moves in the x direction according to the following function: x(t) = 2t2 + 3t − 5 (SI units). What is the force on the object after 2.7 s?

  122. algebra

    It costs a manufacturer $7.95 to produce sunglasses that sell for $21.99. How many pairs of sunglasses must the manufacturer sell to make a profit of $10,530

  123. math

    solving equation (b-c)x² + (c-a)x + (a-b) = 0 folling roots are obtained

  124. Math

    Julie can make 5 shirts in 8 days. How many days would it take her to make 15 shirts?

  125. college algebra

    A taxi cab company charges a flat fee of $3.30 and then an additional $2.20 for each mile. If a taxi fare is $29.70, how many miles was the trip?

  126. Physical science

    Choose the correct answer to the following question 1.The following pairs of ions results in a precipitate being formed... (a)calcium and carbonate (b)sodium and sulphate (c)potassium and iodide (d)sodium and nitrate

  127. History Help: Urgent Please

    What personality traits did the coureurs de bois exhibit that were similar to traits of later French immigrants?

  128. Physics

    A box is sliding down a frictionless plane inclined at an angle of 30° width the horizontal. What is the acceleration of the box?

  129. Math

    Solve for triangle ABC which have angle A =25.25, angle B =60.51 and a =3.82.Find c

  130. math

    The perimeter of a square piece of land is twice the perimeter of an equilateral triangle. (an equilateral triangle has three equal sides.) If one side of the square is 45 feet, find the length of the sides of the triangle. 2x + 3 = 45 2 x + 3 -3 = 45 + 2x

  131. Language Art!

    Which event propels the action in "The Story-Teller? A. A woman is traveling with three children. B.The aunt invited Cyril to look out the window at the animals and fields they are passing. C. A man disagrees with the aunt's story, and she invited him to

  132. Algebra

    Find the price of any container of lemonade at a local grocery store. (You can also find prices in advertisements and on the Internet.) Make sure you write down the number of fluid ounces in the container. Determine the unit price and post the information.

  133. physics

    A block of mass M1 = 0.320 kg is initially at rest on a cart of mass M2 = 0.680 kg with the cart initially at rest on a level air track. The coefficient of static friction between the block and the cart is ?s = 0.610, but there is essentially no friction

  134. Math

    A skateboarder descends on a ramp from 172 feet to 67 feet in 15 seconds.What is average change in height per second?

  135. math

    Mariano is standing at the top of a hill when he kicks a soccer ball into the air. The height of the hill is h feet, and the ball is kicked with an initial velocity of v feet per second. The height of the ball above the bottom of the hill after t seconds

  136. algebra

    A motorboat left a harbor and traveled to an island at an average rate of 11 knots. The average speed on the return trip was 10 knots. If the total trip took 4.2 hours, how far is the harbor from the island

  137. algebra

    It costs a manufacturer $7.95 to produce sunglasses that sell for $21.99. How many pairs of sunglasses must the manufacturer sell to make a profit of $10,530? 1 pairs of sunglasses

  138. Language Arts

    Which statement best expresses a central theme of the story teller? A. People with no children to care for are usually better at handling children. B. It is important to instruct children about right and wrong at all times. C. The best way for adults to

  139. algebra

    A triangle has a perimeter of 56 centimeters. Each of the two longer sides of the triangle is three times as long as the shortest side. Find the length of each side of the triangle

  140. Theology 10 (HELP!!!!)

    At what times in your life have you found it easy to trust in God? What helped you? At what times in your life have you found it difficult to trust in God? What things hindered you. I'm NOT asking you to answer these questions for me but I'm having trouble

  141. algebra

    The length of a rectangle is 3 feet less than twice the width of the rectangle. If the perimeter of the rectangle is 144 feet, find the width and the length

  142. math

    What is the worlds most musical fish? I have fractions .

  143. science

    solved a ball is dropped from the top of a tower 100 meter high. simultaneously another ball is thrown upwards from ground with a speed of 50 m/s . after what time do they cross each other.

  144. algebra

    A jeweler wants to make a silver alloy to be used to make necklaces. How many ounces of a silver alloy that costs $3.50 per ounce should be mixed with one that costs $7.00 per ounce to make a new 30-ounce alloy that costs $6.30 per ounce

  145. History

    Which crop was MOST IMPORTANT to the Mayans? 1. corn 2. beans 3. squash 4. pepper My choice- 3

  146. algebra

    A new machine that deposits cement for a road requires 13 hours to complete a one-half mile section of road. An older machine requires 15 hours to pave the same amount of road. After depositing cement for 2 hours, the new machine develops a mechanical

  147. ?

    Is ADHD considered a physical challenge or emotional challenge or none

  148. chemistry

    2. A researcher is often required to prepare solutions in the lab. Typically, a lab provides a concentrated solution. This solution must be diluted to the proper concentration. Hydrochloric acid is a common stock solution that is typically purchased at

  149. Math - full question

    Julia purchased a new sofa for $1300 and made a 15% down payment and financed the rest over 12 months. The store charged 11% interest on the amount financed. Find the down payment $ Find the amount financed: $ Find the interest paid: $ Find the monthly

  150. math

    A jeweler wants to make a silver alloy to be used to make necklaces. How many ounces of a silver alloy that costs $3.50 per ounce should be mixed with one that costs $7.00 per ounce to make a new 30-ounce alloy that costs $6.30 per ounce

  151. physics

    A toy rocket, launched from the ground, rises vertically with an acceleration of 28 m/s2 for 9.5 s until its motor stops. Disregarding any air resistance, what max- imum height above the ground will the rocket achieve? The acceleration of gravity is 9.8

  152. math

    A new machine that deposits cement for a road requires 13 hours to complete a one-half mile section of road. An older machine requires 15 hours to pave the same amount of road. After depositing cement for 2 hours, the new machine develops a mechanical

  153. math

    The length of a rectangle is 3 feet less than twice the width of the rectangle. If the perimeter of the rectangle is 144 feet, find the width and the length

  154. science

    The ------are the things about an object that can be observed,such as it's size,color,shape,or sound.

  155. Chemistry

    If the methane contained in 3.50L of a saturated solution at 25 ∘C was extracted and placed under STP conditions, what volume would it occupy? Solubility of methane is 1.3 millimolar

  156. Math: Multiplication

    Find all the factores of the product. Products: 30 45 19 40 36 22 4 26 49 32 23

  157. Physics

    A particle's constant acceleration is north at 108 m/s2. At t = 0, its velocity vector is 62.8 m/s east. At what time will the magnitude of the velocity be 118 m/s

  158. English

    has anyone read the essay called "texting is stupid" by gene weingarten? I need help finding the thesis and the tone of the essay! please help asap! thanks in advance!

  159. Physics

    An arrow is shot into the air at an angle of 59.4° above the horizontal with a speed of 20.0 m/s. What is the x-component of the velocity of the arrow 3.30 s after it leaves the bowstring? What is the y-component of the velocity of the arrow 3.30 s after

  160. accounting

    . Preference Decisions: NPV vs. IRR vs. Profitability Index Stephens Industries is contemplating four projects: Project P, Project Q, Project R, and Project S. The capital costs and estimated after- tax net cash flows of each project are shown in the table

  161. Business

    What does the antitrust laws prevent? Please answer as soon as possible thanks.

  162. math

    v=1/3ni2h

  163. math

    the sum of the ages of Sylvana’s two daughters is 60. If the older daughter is three years older than the younger daughter, and the younger daughter’s age is y, write an equation that could be used to solve this problem.

  164. math

    A = P + Prt; P (business)

  165. math

    The price of a computer fell 20% this year. If the computer now costs $550, how much did it cost last year

  166. Physics-bobpursley Follow Up

    Initial Question: A rubber ball is dropped onto a ramp that is tilted at 20 degrees. A bounding ball obeys the "law of reflection," which says that the ball leaves the surface at the same angle it approached the surface. The ball's next bounce is 3.0 m to

  167. physics

    The captain of a plane wishes to proceed due west. The cruising speed of the plane is 226 m/s relative to the air. A weather report indicates that a 32.0-m/s wind is blowing from the south to the north. In what direction, measured with respect to due west,

  168. Science

    Fluorescent lights must not end up in a landfill. Why must these lights be properly disposed of

  169. Quick geometry question

    My geometry teacher said something about when putting supplementary down for the answer doesn't quite necessarily work all the time. Is that true? Why is that? Would it be best just to put linear pair in for supplementary?

  170. college algebra

    An executive invests $22,000, some at 8% and some at 6% annual interest. If he receives an annual return of $1,680, how much is invested at each rate?

  171. Science

    What information can astronmores gain from spectral lines of light

  172. chemistry

    If there are 0.561 g of NaCl left in a beaker that originally contained 75.0 mL of saltwater, what must have been the molar concentration of the original solution? The molar mass of NaCl is 58.44 g/mol. Give your answer to 3 decimal places

  173. Physics

    A Nile cruise ship takes 21.7 h to go upstream from Luxor to Aswan, a distance of 208 km, and 20.3 h to make the return trip downstream. Assuming the ship's speed relative to the water is the same in both cases, calculate the speed of the current in the

  174. Algebra

    Apples normally sell for $0.32 each. They go one sale for 3 for $0.69. How much money is saved if you purchase 2 dozen apples while they are on sale?

  175. physics

    You are riding on a jet ski directed at an angle upstream on a river flowing with a speed of 2.8 m/s. If your velocity relative to the ground is 8.0 m/s at an angle of 30.5° upstream, what is the speed of the jet ski relative to the water? I thought I

  176. Science

    Why sunlight produces more spectral lines than other light sources

  177. Math

    Which of the following shows a stragety to use to find 4 x 275? A- (4 x 300) + (4 x 25) B- (4 x 300) - (4 x 25) C- (4 x 275) - 100 D- (4 x 200) + 75

  178. physics

    A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.59 m/s2 for 19.0 s. 2. Maintain a constant velocity for the next 2.15 min. 3. Apply a constant negative acceleration of −9.08 m/s2 for 5.42 s. (a)

  179. physics

    Two people take identical jet skis across a river, traveling at the same speed relative to the water. Jet ski A heads directly across the river and is carried downstream by the current before reaching the opposite shore. Jet ski B travels in a direction

  180. Algebra

    A theater has 38 rows with 23 seats in each row. Estimate the number of seats in the theater and tell how you arrived at your estimate

  181. Algebra

    use the range strategy to estimate each of the following. Explain how you arrived at your estimates. a) 22*38 b)145+678 c)278+36

  182. physics

    A swimmer heads directly across a river, swimming at 1.2 m/s relative to the water. She arrives at a point 48 m downstream from the point directly across the river, which is 77 m wide. (a) What is the speed of the river current? (b) What is the swimmer's

  183. Chemistry

    1. Imagine that you work at a company that prepares chemical solutions. You are asked to label a solution to sell to different customers. One customer is a hospital, another is a chemistry lab at a university, and a third is a physics lab at a university.

  184. Physical science

    Give one word or term of the following descriptions 1. A reaction that results in the formation of an insoluble salt 2.the process in which ions whithin an ionic substance are separated 3.the positive ion 4.a proton acceptor

  185. Physics

    An 18-year-old runner can complete a 10.0-km course with an average speed of 4.39 m/s. A 50-year-old runner can cover the same distance with an average speed of 4.27 m/s. How much later (in seconds) should the younger runner start in order to finish the

  186. math

    Find the unit rate. Run 400 meters in 1 min 32 s. Have no idea, please help.

  187. Math Problem (please help)

    Use Hooke's Law for springs, which states that the distance a spring is stretched (or compressed) varies directly as the force on the spring. A force of 265 newtons stretches a spring 0.15 meter (see figure). (a) How far will a force of 120 newtons stretch

  188. business math

    On May 1, 2004 the Jones Company received a bank statement that showed a $2,950 balance. Mr. Jones showed a $4,010 checking account balance. The bank did not return check No. 124 for $1080 and check No. 138 for $720. A $3,200 deposit made on April 30 was

  189. Algebra

    About 3540 calories must be burned to lose 1 pound of body weight. Estimate how many calories must be burned to lose 6 pounds.

  190. Coolio

    If a baseball player has 18 hits in 50 at bat,what is the probability that he will get a hit in his next at bat? Express your answer as a decimal number in the thousandths place.

  191. Trig

    Two people decide to find the height of an obelisk. They position themselves 25 feet apart in line with, and on the same side of, the obelisk. If they find that the angles of elevation from the ground where they are standing to the top of the obelisk are

  192. Science

    If the temperature rose from 25C to 45C how many degree Fahrenheit would that be

  193. Geometry

    SP bisects

  194. Physical Science

    What is the kinetic energy of a 1850 kg car that is traveling at 58.0 km/h? B. How much work was done to give the car this kinetic energy assuming the car starts from rest? C. How much work must be done to stop the car?

  195. Math Problem (please help)

    State sales tax is based on retail price. An item that sells for $115.99 has a sales tax of $8.12. Find a mathematical model that gives the amount of sales tax y in terms of the retail price x. (Round the coefficient to two decimal places.) y = Use the

  196. college math

    if $110 is invested for one year at 13% simple interest, how much interest is earned?

  197. math

    *This is orders of magnitude* 1)So, I have to estimate 16,700,000,000,000,000 the product of a single digit of 10. - 2 x 10^16 - 2 x 10^15 *my answer* - 1 x 10^16 - 1 x 10^15 2)0.00000394 estimated as the product of a single digit. ____ x 10____ *fill in

  198. Math

    (2x^3y^2z)-2/(3x^4yz^-2)^-2

  199. science

    the string of pendulum is 2.0 m long,the bosy is pulled sideway so that the string becomes horizontal and the bob is released what is the speed with which the bob is released ?what is the speed with which the bob arrives the lowest piont?

  200. pre calculus

    Determine the quadratic function in vertex form (A) vertex at (-3,-10) passing through the point (2,-5) Dow do I figure it out?

  201. statistics

    Let E and F be two events for which the probability of atleast one of them occurs is 3/4. what is the probability that neither E nor F occurs? The hint is to use Demorgan's laws

  202. chemistry

    A 14.0 kg sample of lead is measured out at 4 degrees celcius what is the specific gravity of lead?

  203. microeconomics

    Using MS Excel or a table in MS Word, complete Table-1 (Joseph Farms, Inc., Cost and Revenue Data). Assume that the price is $165. Assume the fixed costs are $125, at an output level of 1. Assume that the data represents a firm in pure competition. Show

  204. Business Law

    Wilken owes Rivera $2000. Howie promises Wilken that he will pay Rivera the $2000 in return for Wilken's promise to give Howie's children guitar lessons. Is Rivera an intended beneficiary of the Howie-Wilken contract? I am not sure if Rivera is an intended

  205. math

    Steve, Lindsay, and Christine are the lead singers in a band. They will sing 18 songs. Lindsay will sing 8 songs. Christine will sing 6 fewer songs than Stevie. How many songs will stevie sing.

  206. art

    i have an assignment due next next week. its about why some artworks were made. the only one i don't know is, why was the art work empress Theodora and her attendants made? and what are some possible reasons that the artist is unknown.?

  207. math

    Jack has $55.00 that's ten more than 1/3 of what Jill has how much does Jill have

  208. Math

    2/3 of miss lina's class were boys. there were between 2 and 14 boys. One day, twin girls joined the class. Now 3/5 of the students are boys. how many students are in miss lina's class now?

  209. Science

    how can you determine that a coin is not pure silver if you know the mass and volume of the coin?