1. URGENT: Grade 8 Math

    In my math question it says: Multiply. Simplify before multiplying. Use benchmarks to estimate to check the product is resonable. a)3/4 x 8/5 is one of the equations What are benchmarks?
  2. Math estimate with benchmark

    Could you please check ifI have these right? i need to estimate using benchmarks (show work) 1/8 + 3/5 i got: 0 + 1/2 = 1/2 _________________ 4 3/4 - 1 2/3 i got: 4 +1 = 5 - 1 +1 = 2 so 5 - 2 = 3 _____________________ 43 7/8 divide 10 1/3 43 + 1 = 44 10 +0
  3. math

    Use benchmarks to estimate the sum. 1. 11/15+1/8. A:about 1/2 B:about 3/4 C:about 1 D:about 1 1/2
  4. math

    1. use benchmarks to estimate the sum. 11/15 + 1/8 A. about 1/2 B. about 3/4 C. about 1 D. about 1 1/2
  5. Math

    Use benchmarks to estimate each sum or difference. 4/5 + 8/9 a. about 1 1/2 b. about 1 3/4 c. about 1 8/9 -------- d. about 2
  6. PLEASE CHECK OPERATIONS WITH FRACTIONS

    1. 619.5 km=__m A, 0.6195 B, 61.95 C, 61,950 D, 619,500*** Write the metric unit that makes the statement true. 2. 5,941 mm= 5.941__ (1point) A, m*** B, km C, cm D, dm Use benchmarks to estimate the sum, difference, or product. 3. 1 7/8+1/9 A, 0 B, 1 C, 2
  7. math

    Estimate 99 9/19 + 1/5, Use benchmarks to estimate the total
  8. Use benchmarks to estimate the sum, difference, or

    I need help with these 1. 1 7/8 + 1/9 2. 5 2/11 -3 2/18 3. 8 2/17 x 1 15/17 4. 2/9 + 4/9 5. -5/6 + 4/18 6. 11 5/9 + 10 1/3 7. -1/5 + (-3/7)
  9. math7A

    use benchmarks to estimate the sum or difference 4\5+8\9
  10. Math HELP!

    Use benchmarks to estimate the sum, difference, or product. 1.) 1 7/8 + 1/9 0 1 2 2 1/2 2.) 8 8/9 - 5 1/11 4 5 14 11 3.) 7 2/3 x 3 7/9 2 3/27 11 4/9 28 26/27 21 14/27 4.) Walter had 2/4 yard of string. He used 1/2 of the string for a school project. How
  11. Estimating DecimalsProducts and Quotients

    Determine whether each product or quotient is resonable.If not resonable,find a resonable result. 1. 62.77(29.8)=187.0546 2.16.132/2.96=54.5 The numbers are correct except for the decimal places. The first one looks like 60*30 or 1800, so determine where
  12. math

    Write the number that makes the statement true. 1. 205.5 m = _____ mm (1 point) 205,500 0.2055 20.55 20,550 2. 199.2 km = _____ m (1 point) 199,200 19.92 19,920 0.1992 Use benchmarks to estimate the sum. 3. + (1 point) 2 1 0 Estimate the difference. 4. 6
  13. HR

    Which of the following statements about benchmarks is false? A. The instrument measures 16 skills and perspectives, such as how well managers deal with subordinates, acquire resources, and create a productive work climate. B. While managers enjoy
  14. HR

    Which of the following statements about benchmarks is false? A. The instrument measures 16 skills and perspectives, such as how well managers deal with subordinates, acquire resources, and create a productive work climate. B. While managers enjoy
  15. Halp me or i fall

    Write the number that makes the statement true. 1. 205.5 m = _____ mm (1 point) 205,500 0.2055 20.55 20,550 2. 199.2 km = _____ m (1 point) 199,200 19.92 19,920 0.1992 Use benchmarks to estimate the sum. 3. + (1 point) 2 1 0 Estimate the difference. 4. 6
  16. Math

    Explain how u can write 35% as a sum of 2 benchmarks percents or as multiple of a percent? PLEASE TELL ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:)
  17. Math

    I need help with this question: Estimate the product by rounding to the nearest one 6.38 times 18.716 I said on my assignment 120 and my teacher marked it wrong. She said it's 114, and I donot see how it's 114. Any input, would certainly be welcome. Thank
  18. math ,hep, plz

    can someone help explain this for me please... Problem #1 What values for x must be excluded in the following fraction? (x+5)/(-1) Problem #2 what values for x must be excluded in the following fraction? (x-3)/((4x-5)(x+10)) When working with fractions,
  19. 5th grade Math

    Find the product. Estimate to check. 0.12 X 04 _______ O.108 How do I estimate to check? 0.07 X 9.2 ________ 0.644 How do I estimate to check? 0.848 X 3.2 _________ 2.7136 How do I estimate to check? Choose the better estimate 22 X 0.6 a.(12) b.(1.2) I
  20. math-5

    Which choice is the answer? Show me please. Tara spent 3 hours doing homework. She spent 1/3 of her time on math, and 1/5 on science. Which method would provide the most reasonable estimate of the totaltime Tara spent on her math and science homework? a.
  21. Math

    If we multiply "a" and "b",when will: a. the product be larger than both "a" and "b"? b. the Product be less than "a"? c. the product be less than "b"? d. the product be less than"a" and "b"? e. the product be greater than "a"? f. the product be greater
  22. Calculus

    Hello, I would greatly appreciate any help that I can have with the following calculus question below. It has to do with separable differential equations. I'm also going to explain what I've done so far, so please bear with me (but honestly I don't think
  23. Algebra

    40 =15 x x - 20 This is a three part question>> first find the lcd method of solving this equations, and the second ones about cross-multiplying method to solve this equations ,The next question asked would the cross- multiplying method work for all
  24. math-5

    Tara spent 3 hours doing homework. She spent 1/3 of her time on math, and 1/5 on science. Which method would provide the most reasonable estimate of the totaltime Tara spent on her math and science homework? a. multiply 1/8 by 3 b. multiply 1/2 by 3 c.
  25. Math

    Multiply: Try to recognize the type of product to be multiplying. (x-4x^3)^2
  26. physics multiplying vectors

    n the product F = qv · B , take q = 4, = 2.0i + 4.0j + 6.0k and = 136i -176j + 72k. What then is in unit-vector notation if Bx = By? ~~may i get some assistance in this problem? so far.. i tried this.. 136i-176j+72k = 4(2.0i+4.0j+6.0k)(B) 136i-176j+72k =
  27. math

    how do i do x2+12x+32 x2+12x = 14x+32 subtract 14x from each side 14x=32 divide by 2 7x=16 x=16/7, which is 2 and 2/7 ok maybe you typed that question wrong? is it x^2 + 12x + 32 ? if it is then the solution is: (x+8)(x+4) because when you multiply them
  28. Algebra (check my answers)

    Please check these answers. Multiply -7(2a2 -4) = -14a2 + 28 Multiply 0.5(a + b -5) = 0.5a + 0.5b - 2.5 Factor bx - by + bz = b(x - y + z) Combine like terms (simplify) 12x + 4 - 11y - 6x - 9 - y = 6x - 12y - 5 Evaluate the expression 3x2y when x = 3 and y
  29. 6th grade math

    how do you estimate a product when multiplying fractions?
  30. Math Multiplying Fractions

    Multiply. Simplify if you can. 2.1/3x2/5=2/15 4.2/5x3/7=6/35 6.1/6x3/5=3/30 8.9/10x4/5=36/50 10.11x3/4=33/4=8 1/4 12.4/9x2/3=8/27
  31. math(help)

    for questions 1-2,estimate the sum or difference.use the benchmarks 0,1/2,and 1. 1.23/40-9/30 A.0 B.1 C.1/2 2.simone measures the width of one cardboard strip as 1/2 yd.a second cardboard strip measures 5/6 yd in width.estimate the combined width of the
  32. easy algebra question, check answer

    When multiplying two numbers written in scientific notation, what do you do with the exponents of the 10? a. multiply b. add*** c. subtract d. divide
  33. math,algebra

    Use the five properties of exponents to simplify each of the following expressions (y^5)^3(y^3)^2 divided by (y^4)^4 can someone show me how to solve these types of problems (y^5)^3= y^15 multiply the powers (y^3)^2=y^6 multiply the powers again as you
  34. Algebra

    Solve S=a/(1-r) for r S = a/(1-r) Multiply both sides by 1-r S*(1-r) = [(1-r)*a]/(1-r) Simplify S*(1-r) = a Multiply terms on the left. S - S*r = a Subtract S from both sides. S-S*r - S = a - S Simplify -S*r = a - S Multiply both sides by -1 S*r = -a+S
  35. Algebra

    Can you please check my work? You have helped other students I know. Thank you:) Multiply -7(2a2 -4) = -14a2 + 28 Multiply 0.5(a + b -5) = 0.5a + 0.5b - 2.5 Factor bx - by + bz = b(x - y + z) Combine like terms (simplify) 12x + 4 - 11y - 6x - 9 - y = 6x -
  36. algebra

    okay i have to find f(a-2) out of this question f(x)=5x-1 were did the a come from. man i am so confused? "a" is a variable. Like "x" is in most equations. So 5(a-2) - 1 Multiply it out from there and simplify. Matt
  37. algebra

    Need some one check my homework. Evaluate 3p/q when p=2 and q=6. Answer:1 Use < > or = for __ to write a true sentence: 0.001 __ 0.0010 Answer:< Question 3 Evaluate -3/8 - 5/8. Answer:7 Question 4 Evaluate: 84 + (-99) + 44 - (-18) - 43 = Answer:4
  38. Math Multiplying Fractions

    Multiply. Simplify if you can 1. 1/4x5/6= 5/24 2.3/7x3/4= 9/28 3.4x1/5=4/5 4.5/12x2=5/6 5.3/5x10= 6 6.2/3x3/8= 1/4 7.1/7x1/7= 1/49 8.2/9x1/2= 1/9
  39. MATH PLEASE CHECK IT!!2

    sqrt2/sqrt10 here is what I got: sqrt (2/10)= sqrt (1/5) sqrt 0.2 * I don't think that it is right but pleasee check it.Thanks Yes, that is one way you could do it, then simplify further by taking the square root of 0.2, but you are probably supposed to
  40. math

    Reasonableness Sun-Yi estimated 270+146 and got 300. Is her estimate resonable? Explain.
  41. Math

    I need help multiplying the fractions out. The question is... x/3 + y/2 = -4 x - 3y = 6 ( x/3 is a fraction ) To rid an equation of fractions, simply multiply everyting (both sides, too) by the denominator. In this case you have two numbers in the
  42. 5th grade math

    Find The Product. Estimate to check. 0.12 X 0.9 = 10.8 or is it .108? estimate is 12 X 10 =120 Is this correct? Thank you
  43. A L G E B R A H ELP MS SUE.

    I THINK I MAY HAVE DONE MY HOMEWORK WRONG BECAUZE IT SAYS TO : ESTIMATE THE PRODUCT OR QUOTIENT. SO WOULD THAT MEAN TO ACTUALLY DO WORK THEN ESTIMATE THE PRODUCT OR QUOTIENT LIKE FIRST -72 X 57 = -4104 OR ESTIMATE; -4000 ? I AM CONFUSED ABOUT WHAT IM
  44. math

    Please check my answers! Simplify the product. 7x(x+4) A. 7x^2+4 B. 7x^2+28x <<<< C. 8x+4 D. 8x+11 Simplify the product. 4x (2x^3 - 7x^2 + x) A. 8x^4-28^3+4x^2 <<<<< B. 16x^4-7x^2+4x C. 8x^4-7x^2+x D. 16x^4-3x^3+4x^2 I just
  45. math

    Simplify (2c)(11c). my answer is telling me it should be 22c. I think it is 22c(squared). We are not combining like terms, but multiplying each to the 1st power. when you multiply you add the exponents. I am confused.
  46. Math

    The problem to solve is: (x+20)(x-12)(x+4)>0 but I can't figure out how to do this right so I left off the >0 and tried to solve the equation. x+20 evaluates to x+20 x-12 evaluates to x-12 Multiplying x+20 by x-12 is a classic Algebra problem. Here,
  47. Math

    How do you divide fractions??? Cross multiply: For example, 4/5 divided by 6/7 would be 28/30 or 14/15. 3/4 divided by 2/3 would be 9/8 or 1 and 1/8 Actually, the word cross multiply is a misnomer. What is being done is multiplying by the reciprocal for
  48. math

    Estimate. Then find each product. Simplify 6 1/3×1:5/6 Is the answer 11 11/18
  49. math

    Estimate then find each product. Simplify 7 4/5×2 1/3 Is the answer 18 1/5
  50. Multiplying Polynomials

    Use the distributive property to write (each of) the following expression(s) as the sum of monomials. M. (t - 1)(t + 1)(t^2 + 1) I already know that I must multiply across, but I am a bit confused regarding the order to multiply in and which variables to
  51. math

    start with 1, multiply by 2. then multiply the result by 3.then continue to alternate multiplying by 2 and by 3.what is the ones digit after the twelfth multiplication
  52. MATH

    How do you write fractions in simplest form? for example I need explanation 48/66 Also I started on another one it states that I have to multiply. and I have to be sure to simplify each product 7/9 x 3/5 My answer: 21/45 I just don't know what goes after
  53. math

    Multiply and simplify 2/3*13 The answer is 22. Right? if you mean (2/3) * 13 or 2 / (3*13) i believe according to both your answer is wrong Is that (2/3)*13? If so, then (2*13)/3= something other than 22. Or if it is 2/(3*13) = it is not 22. Show your work
  54. math,help

    okay Directions: find the following squares. Problem: ((w)-(1)/(4))^2 I have no idea how to even start. First, FOIL the numerator and then square the denominator. Let me know what you get. (-1w^2)/(4w^2) is this what you mean? No :) Your numerator is w-1.
  55. someone help

    my post is still on this page as algebra, could someone elaborate on what bobpursley tried to help me with. See your original post. I am guessing you are referring to your question 5)Simplify:(5x-4)^2 and your answer= 25x^2 - 16 (5x-4)^2 =(5x-4)(5x-4) =
  56. Math

    Post a New Question Current Questions Homework Help: Math (HELP PLEASE) Posted by Anonymous on Tuesday, September 17, 2013 at 8:37pm. Estimate the total precipitation in inches and in days for Asheville and Wichita. City: Inches: Days:
  57. physics multiplying vectors

    In the product F = qv · B , take q = 4, = 2.0i + 4.0j + 6.0k and = 136i -176j + 72k. What then is in unit-vector notation if Bx = By? ~~may i get some assistance in this problem? so far.. i tried this.. 136i-176j+72k = 4(2.0i+4.0j+6.0k)(B) 136i-176j+72k =
  58. Algebra

    Simplify 1/r=1/x+1/y Multiply both sides by rxy. Then simplify. I will be happy to check your work. That is as compact and simple as the relationship can be written. Are you looking for an explicit formula for x, y or r?
  59. MAT115

    Estimate the following product. 6/1/8 * 7 4/5 should I just multiply 6 * 8 to get an estimation?
  60. math

    What would you need to multiply by in order to solve this system of equations using the linear combination (elimination) method? {6x−2y=4 7x+5y=3 Multiply the 1st equation by 3 and leave the 2nd equation alone. This will eliminate the y's when you add
  61. math multiplying & divding mixed numbers

    An estimate for 8 1/6 . 9 3/4 Simplify your answer. Type a whole number, proper fraction, or mixed number
  62. math multiplying & divding mixed numbers

    An estimate for 8 1/6 . 9 3/4 Simplify your answer. Type a whole number, proper fraction, or mixed number
  63. math

    What is the basic principle that can be used to simplify a polynomial? Possibly these sites will be helpful. I searched Google under the key words "simplify polynomial" to get these possible sources:
  64. Math

    At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product
  65. Math

    At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product
  66. Math

    At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product
  67. Derivatives

    Find f'(x): (abs(((x^2)*((3x+2) ^(1/3)))/((2x-3)^3)) So I thought I should split it into two parts: A and B. A) (x^2)/((2x-3)^2) B) ((3x+2)^(1/3))/(2x-3) My plan was to differentiate each part and then multiply them together, since multiplying their
  68. maths

    1a) Solve the each of these equations by factorising the left hand side into a product of linear factors: (i) x^2 - 6x - 40 = 0 (ii) 3x^2 + 20x - 7 = 0 (b) For each question in part (a), check your solutions by substituting them back into the equation. 3.
  69. maths

    1a) Solve the each of these equations by factorising the left hand side into a product of linear factors: (i) x^2 - 6x - 40 = 0 (ii) 3x^2 + 20x - 7 = 0 (b) For each question in part (a), check your solutions by substituting them back into the equation. 3.
  70. maths

    1a) Solve the each of these equations by factorising the left hand side into a product of linear factors: (i) x^2 - 6x - 40 = 0 (ii) 3x^2 + 20x - 7 = 0 (b) For each question in part (a), check your solutions by substituting them back into the equation. 3.
  71. need guidance on an algebra problem

    20 x+3(y-1)=11 2(x-y)+8y = 28 multiply out 20 x+3y-3=11 - Is this correct? 2x+14y = 28 Using the addition method, would you multiply the first problem by 2 and the second by 20? No. In the second multiply out, you should have gotten 2x -1y+8y=28 or
  72. Algebra 2

    factor each polunomial completely. May I get some help please? x2(squared)-4 1X2-4=1x2+(-4)= -3x? I'm not sure I know how to factor `')brie~ To indicate x squared, use x^2. You need to get the numerical product of 4 without getting a middle x term. This
  73. math

    First estimate the answer. Then multiply to find the exact answer. Simplify all answers. 8 1/6 . 9 3/4
  74. math

    First estimate the answer. Then multiply to find the exact answer simplify all answers 4 1/4 • 9 2/3
  75. Math

    I am really have a tough time trying to solve this problem. I think my first three steps are correct but I am not sure. Could someone please help me? I got lost somewhere on one of these steps. I thonk it was step 3, 4, 5. Thank you. The two numbers chosen
  76. MATH

    i need to write each expression as a product of the same factor: * = multiply can you check these please a^2 i got a*a 19^3 i got 19*19*19 -6^2 i got 6*6*-1 -x^3 i got x*x*x*-1 (-5)^4 i got (-5)*(-5)*(-5)*(-5)*(-5) 4^3 i got 4*4*4 -(10)^2 im not sure how
  77. Math 157

    Can someone please help me. At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also
  78. criminology

    Can someone tell me a policy that is in effect that relates to trait theories? Determine how far sound travels in 55 minutes. Express your answer in feet. You may use 760 mph as the speed of sound.Do I divide,add,subtract or multiply. Check out this site:
  79. math exponents

    i need to write each expression as a product of the same factor: * = multiply can you check these please a^2 i got a*a 19^3 i got 19*19*19 -6^2 i got 6*6*-1 -x^3 i got x*x*x*-1 (-5)^4 i got (-5)*(-5)*(-5)*(-5)*(-5) 4^3 i got 4*4*4 -(10)^2 im not sure how
  80. math

    How do you multiply decimals If you look at the box up above that says jump, scroll down to the math section. If you select arithmetic you'll see a section on decimals there. That section has a subsection on multiplying them. when you multiply decimals you
  81. Math

    Can someone please help me. At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also
  82. Math

    At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product
  83. math

    At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product
  84. Math

    At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product
  85. Math. (Check Answers) STUCK

    HI, I'm stuck on two questions(: Round the number to the thousandths place. 97093.113469 Is it 97093.113 < -- ? 97093.112 97093.114 97000 Without multiplying, determine the sign of the product. (19)(-2)(37)(-0.8)(112) Postive Negative <-- ? The
  86. Math

    Please check my answer: Multiply and simplify (8a^7)/(11p^3) * (121p^8)/(64a) I got (968a^7p^8)/(704ap^3) Is this correct?
  87. mat 117/ algebra

    My question is about scientific notations. Here is the problem. What I need clarification on is the power signs. When to add, subtract or multiply? (2.4 x 10^-5)(4 x 10^-4) is the anwer 9.6 x 10^-9 or 9.6 x 10^20 The answer is NOT 9.6 x 10^20. Rember your
  88. Algebra 2/Trig

    I've done every other single question besides this one. (There was 12). I'm stumped and would really appreciate some help! I have to simplify this: 5/3sqrt(3-4) I am not sure if you have to conjugate the denominator and multiply it with the top and bottom,
  89. Algebra

    When multiplying two numbers written in scientific notation what do you do with the exponents of the 10? A. multiply B. add C. subtract D. divide I think the answer is A. multiply. Is that correct?
  90. Another problem to check..please check my work...

    (-2x^2y)^3*(5xy^3)^2=(-2x^2y)^3 = -8 x^6 y^3 *Is this correct.? (-2x^2y)^3 * (5xy^3)^2 = (-8x^6y^3) * (25x^2y^6) = -200x^8y^9 When you have the same base, you add exponents when multiplying. For example, x^2 * x^3 = x^5. When you have the same base, you
  91. algebra

    Simplify using only positive exponents. (2r^-1s^2t^0)^-2 ---------------- 2rs Thanks in advance! Working this out: (2^-2 r^2 s^-4)/ (2 r s) = r^2/8rs^5 Note: Anything to the 0 power is equal to 1. I hope this will help. Sorry but can you help me please I
  92. math

    My question is how do I estimate the product of 8.99 by 11.
  93. algebra

    How do you simplify (4x^3y^5)^2? are you using the carrots for symbolising "the power of..." or fractions? if i know what your using them for then i can help you. yes. 3^2=9 okay. then it would help to put the exponents out of the parenthesis:
  94. math

    Find the product. Estimate to check that your answer if reasonable. 191 x 88
  95. math

    Prove this identity (cos è - 1) / (cos^2 è) = sec è - sec^2 è I have a question when you simplify the secant in terms of cosine. Would you cross multiply but then again there's the subtraction sign there instead of a multiplication sign? then would you
  96. Math

    Please check my work. 1) 64 divide -4 = -16 2) -144 divide (-9) = 16 3) Simplify -9 and a small 2 = -81 4) Simplify (-3) and a small 3 = -27 5) Add -4/11 + 5/11 = 1/11 6) subtract 5/11- [-3/11] = 8/11 7) multiply [-7/8] • [-2/4] = 7/16 8) divide -3.5
  97. Algebra I

    Hi, I would like someone to explain to me the process to get to the answer of these questions. (The answers are in the back of the book, but I don't understand how to get them myself): QUESTION ONE Warren has 40 coins (all nickels, dimes, and quarters)
  98. Algebra

    1.How do you factor (-5t^2+50t+5) ? I keep getting (-5)(t-1)(t+1), but when I check it by foiling and multiplying, it doesn't equal the original trinomial. 2. Can I multiply (-3x-2x+8) by (-1) to get rid of the negative coefficient? If I don't, it will be
  99. math

    2/3 over 10 equals 1.8/r solve for r. (2/3)/10 = 1.8r. First, invert and multiply the denominator; i.e.,10. (2/3)*(1/10) = 1.8/r 2/30 = 1.8/r Now cross multiply. 2r = 30*1.8 2r = 54 Now divide both sides by 2 2r/2 = 54/2 r = 27 check my thinking. check my
  100. Math

    My son is grade 4 his homework have question is : when you multiply any number by 1,what is the product ? Please help !!!!