Critical Thinking/Math

9,720 results, page 51
  1. SAT Math?

    I'm working on a couple of SAT math programs for school, and I have trouble figuring some out. 1. Joe is 3 years younger than Kate. If n represents Nora's age now, what was Kevin's age 4 years ago, in terms of n? A. N + 7 B. N + 1 C. N - 1 D. N - 4 E. N -
  2. algebra

    Rita is spending more time at home to study and practice math. Her efforts are finally paying off. On her first assessment she scored 58 points, then she scores 63 and 68 on her next two assessments. If her scores continued to increase at the same rate, on
  3. Last Math problem I promise

    a cellular phone company offers a contract for which the cost C, in dollars of t minutes of telephoning is given c=0.25(t-300)+65.95 where it is assumed that t >== 300 minutes what times will keep costs between 106.20 and 139.20? I am already lost at word
  4. Calculus(math)

    A particle is moving on a straight line in such a way that its velocity v is given by v(t)=2t+1 for 0≤t≤5 where t is measured in seconds and v in meters per second. What is the total distance traveled (in meters) by the particle between times t=0
  5. Physic

    A wave pulse travels along a string at a speed of 160cm/s. Note that part a is independent and refer to changes made to the original string. Part A:What will be the speed if the string's tension is doubled? I was thinking that it should be 320...but i
  6. AP Physics

    A child on a sled starts from rest at the top of a hill and slides down. Does the velocity at the bottom depend on the angle of the hill if: (a) it is icy and there is no friction? (b) there is friction (deep snow)? I'm thinking that the angle will always
  7. science

    Please, where would decomposers go on a food web? I was thinking about putting them at the top and having all of the consumers' arrows point to them and then have an arrow pointing from the decomposers to the producers because don't decomposers decompose
  8. Math

    need to describe 3 different problem solving approaches to this problem, one I think is algebra, but don't know how to solve, and i need to say how to solve each one in each different way, please help with this. aaron is thinking of a number, if its
  9. Psychology

    "It all happened for the best," "I would never have left that dreadful job if they had not laid me off," and "Yes, I miss mom's home cooking, but I am going to school and building my future." These are examples of: (Points: 5) avoidant coping.
  10. ethnics

    Trends in immigration will continue to shape the face of the United States. What will this face look like in the year 2050? http://www.google.com/search?hl=en&q=trends+immigration There are many promising articles in this collection to help you. Please
  11. Language Arts

    In "The Finish of Patsy Barnes" when Patsy saw Black Boy, his "heart was beating very wildly beneath his jacket" because he? A. Had never ridden in a race before B. Was thinking about his mother's illness. C. Feared his mother's reaction to his riding in
  12. L.A. The Governess :)

    The literature is The Governess by Neil Simon. What do you learn from these stage directions in The Governess? [The faintest trace of a smile her lips] A. Julia is suddenly very happy. B. Julia knows something Mistress doesn't know. C. Julia has made an
  13. Need your help... SOcial Studies....

    Being a New Yorker, I found the panorama of New York City, located at the Queens Museum of Arts, to be very interesting. How could I integrate or use the panorama of New York city as a resource in my social studies instruction. I was thinking about taking
  14. math

    Short math quadractic equation word problem*best answer? josh buys concert tickets worth $180, he then keeps 2 of the tickets and sells the rest for 9 dollars more, he make a total profit of $36, after selling all the tickets. what was the original ticket
  15. math

    I need to know how to calculate what percentage of a number is to another. let me make that clearer, 35 is what percent of 48? how is that calculated? What you are asking is this: 35 is to 45 as x is to 100 or 35/48=x/100 solve for x x=.729 Now to get %
  16. Statistics and Probability

    A research manager at Coca-Cola claims that the true proportion, p, of cola drinkers that prefer Coca-Cola over Pepsi is greater than 0.50. In a consumer taste test, 100 randomly selected people were given blind samples of Coca-Cola and Pepsi. 58 of these
  17. Calculus

    Evaluate ∫ (cos(x))^(1/2)sin(x)dx Let u = cos(x)? ∫ (u)^(1/2)sin(x)dx = ∫ [2u^(3/2)/3]sin(x)dx ∫ [2cos(x)^(3/2)/3] (-cos(x)) dx? I thought this involved the FTC, but now I'm thinking that's false.
  18. Physics

    What value of F can pull the 5.00 kg box at constant velocity up the incline plane if uk=0.25. uk is coefficient friction The force F must equal the component of weight down the plane added to the frictional force. The frictional force is uk*mg*cosTheta.
  19. Chem II

    A 0.10 M HF solution is 8.4% ionized. Calculate the H^+ ion concentration. The "8.4% ionized" is throwing me. This is my line of thinking. For every mole HF disolved yeilds one mole of H^+. Since there is 0.10 M HF and the solution is 8.4% ionized = 0.84
  20. maths

    find the roots of the equation X(square)+7x equal to 0.(b)write down the equation whose roots are -2 and 5. I will be happy to critique your thinking. Write the equation, and solve. In the second, hint: (x+2) is one factor.
  21. CHEMISTRY

    TWO SUFFIXES THAT INDICATE THE PRESENCE OF OXYGEN IN A POLYATOMIC ION ARE aA. -ite and -ide B. -ite and -ate C. -ate and -ide d -thio and -ate I will be happy to critique your thinking on this.
  22. 6th grade math

    Yes I am not smarter than a 6th grader. How do I show the math and in the simplest form for the following: A sixth grade class has 100 sheets of lightweight paper. They use 3/4 of the paper for a collection of class poems. What is the total thickness of
  23. Educational Perspectives,

    In which of the following play centers do young children learn to engage in symbolic play when they substitute objects for real ones, sequence events, and learn use of currency? A. Library B. Block C. Math D. Dramatic play my answer is d.
  24. Probability

    Thank you for the explanation MathMate! Would the answer to this question be A? Darby guesses the answers to six questions on the math portion of her college entrance exam. Each question is a true or false question. What is the approximate probability that
  25. Math

    One of the "think outside the box" problems in my math work is really challenging me. I need to write and equation expressing: 8 cos theta + 15 sin theta as a single sinusoid I tried graphing to no avail and there is nothing in my textbook about turning an
  26. English

    I included the last sentences. I find it difficult to rephrase the author's description of the characters' personality. I'll include it in my next post. 1) He remarks that among (of?) all his daughters, Lizzy is his favourite because she is cleverer and
  27. Math Riddle

    In a little town in West Michigan lives a math professor, who hears one day that the barber has three children. So, on the next visit to the barber, the professor casually inquires, "I have heard you have three children, is that right?" "Yes!" says the
  28. calculus

    Let z = ∫e^(sin(t))dt from x to y a = x b = y I tried thinking about it like a chain rule but even then i'm a little unsure. I know dz/dt = e^(sin(t)). Can you please point me in the right direction if i'm supposed to use the chain rule.
  29. Math

    Are there more rational or irrational numbers? I am thinking irrational, because the product of a rational and irrational number is irrational. Is this enough of a reason to prove it?
  30. calculus

    Let z = ∫(e^sin(t)dt) from x to y a = x b = y I tried thinking about it like a chain rule but even then i'm a little unsure. I know dz/dt = e^sin(t). Can you please point me in the right direction if i'm supposed to use the chain rule.
  31. math

    Lucy is thinking of a number. The number is greater than two hundred twenty-five. Her number is less than 2 hundreds 2 tens 7 ones. What is Lucy's number?
  32. calculus

    Let z = ∫e^(sin(t))dt from x to y a = x b = y I tried thinking about it like a chain rule but even then i'm a little unsure. I know dz/dt = e^(sin(t)). Can you please point me in the right direction if i'm supposed to use the chain rule.
  33. Math

    Consider the following where s is in feet and t is in seconds. s(t) = t^3 + 4t^2 + 6t + 4 (a) Find v(t). v(t) = (b) Find a(t). a(t) = (c) Find v(3). (d) Find a(3). v(t) is the first derivative of s(t). a(t) is the second derivative of s(t). I will be happy
  34. Math

    Zabato is thinking of a number. Three times the sum of the number and ten is the same as eight times the number. What is Zabatos number? Help! so confused thank you!
  35. Math

    I am thinking of a year in the last decade. The sum of the digits in the 1000 and 100 place are 2 less than the sum of the digits in the 10 and 1 place?
  36. 11th grade english

    I am supposed to state how the italicized noun clause is used, but I'm not sure how to tell the difference.. can anyone help? 1. [What I wanted to do] was to finish my work. S
  37. Role of responsible moderates

    WHat role did responsible moderates, such as John Adams , Benjamin Franklin, and THomas Jefferson play in producing wide-based support for independence in the American colonies? "Diane" I have removed all the questions you posted. We will be happy to
  38. statistics

    In a chi-squared test of a contingency table, the value of the test statistic was =12.678, and the critical value at = 0.025 was 14.4494. Thus, (Points: 2) A) we fail to reject the null hypothesis at = 0.025 B) we reject the null hypothesis at = 0.025 C)
  39. Statics

    You wish to test whether or not a coin is fair, so you toss it 400 times and obtain 220 heads. Test the null hypothesis that the coin is fair and balanced against the alternative that it is not fair and balanced. Use the 1% significance level. Be sure to
  40. english

    4. Which of the following sentences contains a comma splice? A.The kitten climbed the drapes, it couldn't figure out how to get down. B.The cruise ship docked on Oahu, then again on Maui. C.We need help with organization, structure, and spelling. D.Our
  41. ALGEBRA 3

    so wat do u mean by that WHICH ORDERED PAIR IS A SOLUTION OF THE FOLLOWING SYSTEM OF LINEAR EQUATION 2X-5Y=NEGATIVE 12 NEGATIVEX +4Y=9 A{NEGATIVE6,0} B{3,3} C{NEGATIVE1,2} D{2,2} I will be happy to critique your thinking on this. I mean I wont do your
  42. computer science

    Under the Von Neumann architecture, a program and its data are both stored in memory. It is therefore possible for a program, thinking a me mory location holds a piece of data when it actually holds a program instruction, to accidentally (or on purpose)
  43. SCIENCE HELP!!??

    Hi Please any one can help me in my science homework It is Imagine that you were driving in a car and it was raining, what would be the froces acting around the car and what would the electrical charges bee around the car, on the base and in the sky. I
  44. social studies

    Pookie is listening to music through headphones so that no one else can hear it. When Pookie's sister walks into the room, he says, "Sissy, do you like this song?" even though she cannot hear the music. Pookie's question indicates that he engages in which
  45. I'm really stuck on math!

    One-half of the students at Greendale Middle School take art. Two-thirds of the students take Spanish. Deshawn uses a coin and a standard number cube as a simulation of the students at Greendale Middle School. Deshawn lets “T” represent a student
  46. math

    One-half of the students at Greendale Middle School take art. Two-thirds of the students take Spanish. Deshawn uses a coin and a standard number cube as a simulation of the students at Greendale Middle School. Deshawn lets “T” represent a student
  47. Math

    One-half of the students at Greendale Middle School take art. Two-thirds of the students take Spanish. Deshawn uses a coin and a standard number cube as a simulation of the students at Greendale Middle School. Deshawn lets “T” represent a student
  48. math

    How can I add a two digit number and two three digit numbers in my head. Any tricks anyone knows in connection with short-cuts to solving different math problems( such as addition, subtraction,multiplication, division, rounding, conversions, percents) in
  49. Math- Need Help..

    I'm having trouble with a question from one of my math assignments and it's driving me crazy. Its: -2/5x - 9 < 9/10 (two-fifths and nine-tenths) I tried doing it a few times, it might be easier than it looks and I just don't understand. If someone can
  50. Math: Geometry

    I am having trouble with a problem from my online math class. I tried using the basic angle properties of circles, but didn't get anywhere: Let ABCD be a cyclic quadrilateral. Let P be the intersection of AD and BC, and let Q be the intersection of AB and
  51. chemistry

    Benzene has a heat of vaporization of 30.72kj/mol and a normal boiling point of 80.1 C . At what temperature does benzene boil when the external pressure is 445 ? This is how I am solving this problem, but when I enter the answer it says im wrong. Can
  52. Physics

    Can someone please help me sort out this problem? "A boy standing at the equator jumps vertically into the air. Does he land in the exact same spot after landing?" I'm thinking that when he jumps he is also moving horizontally with the earth and so he will
  53. health

    Sodium intake can be controlled by A. carefully reading labels of processed foods. B. choosing frozen dinners over fast foods. C. keeping a blood pressure level higher than 140 over less than 85. D. increasing your intake of water to balance the sodium in
  54. microeconomics

    In order to maximize profits or minimize losses, a competitive firm will produce at the point where MC = MR. Do you agree or disagree with this statement? * i am thinking that i would agree because firms have to reach a equilibrium to off set the losses
  55. chem

    calculate the change in enthalpy when 1.00g of hydrogen peroxide decomposes. H2O2(l) yields H2O(l)+ 1/2O2(g) (traingle)H- -98.2kj I will be happy to critique your thinking on this. help me? You know the delta H is for one mole decomposition. So figure the
  56. Health

    A man is shot in the head, and the bullet stops just outside the dura mater. What is the innermost layer that the bullet has penetrated? A. Skin C. Fat B. Bone D. Periosteum The dura mater is a thick, tough membrane that contains channels for blood to pass
  57. Mathematics (Probability, Statistics, etc.)

    I have a Statistics project due tomorrow on Combinatorics. Admittedly, while my math skills aren't too bad (I get 99th percentile on standardized tests and such), it has been a while since I last took a math class after a 2-year lapse in education, so my
  58. Shakespeare

    Okay, I know this isn't techinically 'homework help', but I have to do a project about the Taming of the Shrew. It can be anything from a character analysis, to a study of hawk training, to a report on Elizabethan fashions. Anything that is, in any way,
  59. 7th grade

    I need help with these math problems. a + 8 b + a ba b divide a 3b 48 divide b a - 3 a times 0 4a - b 5 + b - 3 b divide a = 8 4b - 30
  60. algebra

    A student opens a math book to two facing pages.The product of the page numbers is 210.Find the page numbers. The first page is _________ The second page is________
  61. Math

    9 students in a group found that their mean score was 86 for the first math test. On the next test, each student in the group scored 7 points higher than on the first text. What was their mean score for the two tests? Any help would be appreciated.
  62. Math Statistics

    The table below shows Rico’s grades during the third term in four subjects. Subject Units Grade Math 1.5 98 Science 2 97 English 1.5 95 A.P. 1 99 What was Rico’s average grade in the four subjects?
  63. math: counting techniques

    Six problems (numbered 1 to 6) are set for a math test. A student can score 0, 1, 2, 3 points for each problem. Find the number of ways to score a total of 15 points for the six problems.
  64. algebra

    I need some help with this math problem: Let n be the number of oil refineries at t years since 2005. A reasonable model of oil refineries is n= -2.23t + 210.53. What is the slope of this model? What does it mean in this situation?
  65. Math

    What is a good math website which'll help kids aged 5-6 learn? I want a website that shows you how to solve problems step by step. Problems such as addition and, subtraction. Thank you in advance.
  66. Steve help!

    10,000 students took a math test. If there average score was 40 with standard deviation of 10, how many students must have scored between 20 and 40 marks? 3,772 2,227 5,000 3,334 4,772
  67. math

    I can't figure this one. At a math contest,12 problems were given. Five points were awarded for each correct answer,and two points were deducted for each incorrect answer. Matt's score was 39.How many correct answers did he
  68. Math

    How can you order three whole numbers with different numbers of digits without comparing the digits? Give an example. I think that I can use the same number with different place numbers like: 4, 44, 444; I don't have to compare numbers. Is this right? If
  69. Math

    Sorry again but I am terrible at math and I need help help writing this prob into an equation: 50 pounds of potato salad cost $39.50 and 50 pounds of bean salad cost $23.50. What was the difference in costs of the salads?
  70. Math

    In a class 85% of the student received the highest grade in English Literature, 80% in Math, 75% in History, and 30% in Chemistry. About what percentage of the students could you say for sure that they received the highest grade in all 4 subjects?
  71. IS ANYONE IN THIS WEBSITE? I NEED HELP MATH H.W.

    NIMI HAS 59 CANDIES.SHE GIVES HER FRIENDS SOME CANDIES. SHE GAVE 10 CANDIES TO HER FRIEND SARA AND 15 CANDIES TO HER FRIEND ANITA.HOW MUCH DOES SHE HAVE LEFT? COMMENTS: I AM IN SECOND GRADE. PLEASE HELP ME WITH MY MATH HOMEWORK. THANK YOU! 59 -10 -15 =
  72. science

    What would a counter-example be in math? a.an example that proves the conjecture wrong b.an example to show the formula is wrong c.a very nice granite kitchen-top surface d.an example to show the conjecture is true
  73. Math

    A math teacher drove by a playground that was full of boys and dogs.The teacher notice there were a total of 40 heads and 100 feet. Hom many boys and how many dogs were there?
  74. Algebra 2

    Hey I am working on math homework that involves "Standard Form to Vertex Form by Averaging." My class is just starting to learn this today, but I am totally lost still on what to do. Can you please help? The formula for this is y=a(x - h)^2 + k the h is
  75. CALCULUS - need help!

    this was on the math test that i got wrong... The position equation for the movement of a particle is given by s=(t^2-1)^3 when s is measured in feet and t is measured in seconds. Find the acceleration at two seconds... i found the first derivative but i
  76. math

    How do I write this problem? to receive a grade B- in a math course, you must have a mean of 83 on five tests (4 tests + one final) all 100 pts maximum each. Your scores thus far are 85,79,82,and 81. How many points must you have on the final, to earn the
  77. Math

    Hello. I am learning something new this year in math and truly need some help please. Ordering Real Numbers. Compare. Write , or = Square root of 8 + 3 8 + square root of 3 I have to compare these and don't know where to begin or how to start this. Please
  78. Math

    A 3-pound pork loin can be cut into 10 pork chops of equal weight. How many ounces is each pork chop. Is my math correct? 3lb=48oz so 48/10=4.8 so is each pork chop, 4.8 os or do i have to divide 8 by 10?
  79. math

    Sarah was trying to figure out her grades for her math course. She only knew the grade of 4 tests she had taken, however the class had taken 5 tests total. She scored a 94, 67, 83 and 93. If Sarah ended up with a grade of 90, what did she get on the 5th
  80. Maths

    Alright, so I'm doing questions on exponent laws for my grade 11 math couse, and I came across one and I've no idea how to answer it. Could someone please explain step by step? According to textbook, answer should be 16: (2^3) / [(2^0)-(2^-1)] That "-1" is
  81. Math

    Okay. I have questions like "Walks ten meters in 3 seconds" . How do I find her walking rate. After that I have to find an equation to represent the distance she walks in t seconds. Please help me...Im very confused and terribe at math
  82. Chemistry

    A 6.00 M H2SO4 solution has d = 1.34 g/mL. What is the mass percent of H2SO4 in this solution? Choose one answer. a. 56.1 b. 43.9 c. 37.0 d. 58.8 When we calculated yesterday the answer was not B. 43.9....I got it wrong and don't know why if the math was
  83. algebra

    The test scores from Mrs. Gray's Math class are shown below. 72, 73, 66, 71, 82, 85, 95, 85, 86, 89, 91, 92 Construct a box-and-whisker plot to display these data. --65--70--75--80--85--90--95--100-- ^what the graph looks like^ How would you solve this
  84. math test

    ok this past week i was sick 4 2 days and i need 2 finish this math test by today!!!! and i didn't get 2 learn anything like u know, not practive soo plz anwser these questions: 1.what is a concave polygon 2.what are concentric cicles? 3. what does this
  85. math

    I was just wondering, if a series of numbers has 8 digits and the 1st digit is always 3, how many possible combinations of this number could there be. I am certain I once learned this in a math class years ago, but cannot remember how to calculate it. Help
  86. math

    mr. pursley, have you ever worked geo., trig. etcwith no calu.s with the heat on , when it had to be right?wheather you blew up your target or something else or the bld. collapsed or was built in the correct place? i'm not an answer grazer, but qam an
  87. Stanger Secondary ex-school

    What subjects do u really need to do for art such as Drawing and Poetry...#"compulsory subjects" for these arts. Is it: Physics,pure math,geog,life sciences,mech tech,EGD,mah.lit,BS,history,economics,...which ones are needed??? Ain't u shuld be smart in
  88. math

    I am sorry but I am not good at math, this may seem like a dumb question but I don't do well with word problems? I can't figure it out, maybe I am making it too hard on myself, can someone point me to the right direction? . The distance from Philadelphia
  89. Stats

    Fill in the table below regarding populations and samples. The first column represents the question the statistician is trying to answer. Fill in the blank(s) for each row. 1.Is my well water safe? 2.Are as many girls born as boys in the world? 3.Which
  90. math

    I am sorry but I am not good at math, this may seem like a dumb question but I don't do well with word problems? I can't figure it out, maybe I am making it too hard on myself, can someone point me to the right direction? . The distance from Philadelphia
  91. Physics

    A filament bulb and a resistor are connected in series to a battery. Which of the following will contribute to the load of the circuit? A. Bulb B. resistor C. Bulb and resistor D. none I'm thinking the resistor, but I'm unsure. Thanks
  92. Physics

    A filament bulb and a resistor are connected in series to a battery. Which of the following will contribute to the load of the circuit? A. Bulb B. resistor C. Bulb and resistor D. none I'm thinking the resistor, but I'm unsure. Thanks
  93. music

    Which of the following works helped to redefine the symphony as a genre? A. Beethoven's Sixth Symphony B. Beethoven's Fifth Symphony C. Symphonie Fantastique D. Beethoven's Ninth Symphony Im thinking its B, right?
  94. Chemistry

    Consider the reaction Zn(OH)2(s) + 2CN-(aq) Zn(CN)2(s) + 2OH-(aq) a) Calculate K for the reaction. (Ksp Zn(CN)2= 8.0 x 10^-12) b) Will Zn(CN)2 precipitate if NaCN is added to a saturated Zn(OH)2 solution? I tried splitting this into two equations:
  95. Math

    Matt Miller, age 28, takes out $50,000 of straight-life insurance. His annual premium is $418.20. Using the tables in the Business Math Handbook that accompanies the course textbook, determine the cash value of his policy at the end of 20 years. A. $13,250
  96. English

    1) Identify the three components/puzzle pieces that you believe are most critical to the formation of a worldview. Refer to the textbook Foundations of Christian Thought: Faith, Learning, and the Christian Worldview to help identify these components. (You
  97. Math

    posted my last question wrong. 1) The slope of a line is 3/4, the line passes through the point(4,7). Where does the line intersect the y-axis? 2) If x/y=z, and x*y*a=0, which of the following variables have to=0? Assume each of the variables is = to a
  98. Math

    Good evening everyone. I have another math problem I truly need help with. Complete the table Length of side 1 2 3 4 5 Perimeter of side Area of square I am not sure where I would even start by completing the rest of the table. How would I start doing this
  99. Math

    Good evening. I have a math problem that I just need a bit of help on please. A trap for insects is in the shape of a triangular prism. The area of the base is 3.5in and the height of the prism is 5 in. What is the volume of this trap? Do I just need to do
  100. Algebra

    Need help to an math problem. James have 15 cases, with 15 boxes per case, and 15 brands per box. Write an exponential expression using a base of 15 to show how many total brands there are in a stack of cases. How would I write that?