15-75x=13-50x I combine like terms first 75x-50x?

10,951 results
  1. Statistics

    3. Two variables, x and y, have a correlation of 0.75. If x has a mean of 25 and a standard deviation of 3, and y has a mean of 12 and a standard deviation of 6, which of the following is the least-squares regression line for the two variables? (A) y(hat)

  2. Alegbra

    1. –9x – 5 = –95 a) 17 b) 11 c) 10 d) –10 2. x/4 – 5 = –8 a) –27 b) –12 c) –7 d) 12 3. x/5 + 6 = 10 a) 44 b) 30 c) 20 d) –20 4. –2(m – 30) = –6m a) –15 b) –13 c) –8 d) 8 5. 3.75x + 3.7 = 1.7 + 1.75x a) 10 b) –1 c) 1 d) .1

  3. math

    Dan has saved $500. He wants to open a chequing account at Save-A-Lot Trust or Maple Leaf Savings. Save-A-Lot Trust's chequing account is $10 per month plus $0.75 per cheque. Maple leaf savings' chequing account is $7 per month plus $1.00 per cheque. Which

  4. MATH PLEASE HELP MRS.SUE!

    What are the next three terms in the sequence? –1, 9, 19, 29, … (1 point) 38, 37, 32 40, 51, 62 39, 49, 59 38, 47, 56 2. Geoff planted dahlias in his garden. Dahlias have bulbs that divide and reproduce underground. In the first year, Geoff’s garden

  5. math

    A cab charges $1.50 for the first mile and $0.50 for each additional mile. Write and solve an inequality to determine how many miles Sharon can travel if she has $25 to spend. (2 points) $0.50 + $1.50x ¡Ü $25; x ¡Ü 16 miles $0.50 + $1.50x ¡Ý $25; x

  6. Algebra

    Which of the following options is an equivalent function to f(x) = 2(5)^2x? f(x) = 50x f(x) = 100x f(x) = 2(25)x f(x) = 4(25)x

  7. PHYSICS

    Calculate the pressure on the top lid of a chest buried under 4.30 meters of mud with density 1.75X 10^3 kg/m^3 at the bottom of a 12.5 m deep lake

  8. Math

    15-75x=13-50x I combine like terms first 75x-50x?

  9. Math ASAP

    5. 3.75x + 3.7 = 1.7 + 1.75x a) 10 b) –1 c) 1 d) .1

  10. HELP MATH !!

    Melanie charges $4.50 per hour when she washes cars, plus $5.00 for supplies. Which function rule represents the amount y Melanie charges to wash cars for x hours? (1 point) a) y = 0.50x b) y = 4.50x + 5.00 c) y = 5.00x + 4.50 d) y = 9.50x The sale price

  11. Algebra 2

    Let f(x) = 3x^2 – x + 2 and g(x) = 5x^2 – 1. Find f(g(x)). Show each step of your work. I got 75x^4 -35x +6 If that is wrong can you correct me. Thank you!

  12. algebra

    2. W/4 - 4 = 3 a)-4 b)28****** c)3 d)11 3.X/5 + 6 = 10 a)44 b)30******* c)20 d)-20 4.-2(m-30)=-6m a)-15 b)-13************ c)-8 d)8 5.3.75x+3.7=1.7+1.75x a)10 b)-1 c)1***** d).1 Please check my answers :)

  13. Intermediate Algebra(Math)

    Mixed nuts. Oh Nuts! sells pistachio kernels for $6.50 per pound and almonds for $8.00 per pound. How much of each type should be used to make a 50-lb mixture that sells for $7.40 per pound? So far I have, this: 6.50x + 8 (50 - x) = 7.50 (50) 6.50x + 400 -

  14. Math

    1) X/4+10=14 A)96 B)46 C)16 D)-16 2) 2(2-2x)=-3x A)-4 B)4 C)6 D)0 3) 3.75x+3.7=1.7+1.75x A)10 B)-1 C)1 D).1 Answers : B C C ???

  15. Math ASAP

    4. 3.75x + 3.7 = 1.7 + 1.75x a) 10 b) –1 c) 1 d) .1

  16. ALGEBRA

    Max charges $3.50 per hour when he mows lawns, plus $6.00 for transportation expenses. Which function rule represents the amount y Max charges to mow lawns for x hours? y = 9.50x y = 6.00x + 3.50 y = 3.50x + 6.00***** y = 2.5x The sale price of ground beef

  17. maths

    Solve for x in 50x^(3/2) = 32x^(-1/2)?

  18. math, algebra

    can someone correct this for me... Problem : Business and finance. Linda Williams has just begun a nursery business and seeks your advice. She has limited funds to spend and wants to stock two kinds of fruit-bearing plants. She lives in the northeastern

  19. Calculus

    Hello, I just wanted to verify if my work was good. Calculate the following integral by parts: ∫ upper limit is 1/5 and lower limit is 1/10. of 10sin^-1 (5x)dx so first I named the variables: u = 10 sin^-1 (5x) du = 50 / sqr(1-25x^2) dv = dx v = x so we

  20. algebra

    What is the LCM of 15x^6 and 75x^8?

  21. STC

    Find the correct end behavior diagram for the given polynomial function P(x)=2.75x^4+3x^2+x-1

  22. Chemistry

    x+y=9.0 0.50x+0.20y=3.90 What is the value of x and y?

  23. algebra

    Which are the solutions of 18x^3=50x? A. 0,5/3 B. -5/3,5/3 C. -5/3,0,5/3 D. -5/3,1,5/3 I don't know how to get the answer.

  24. math

    word problem--If car A is going 50mph and is 15miles ahead of car B who is going 60mph, how long will it take car B to catch up with other? 50x+15=60 -15=15 50x=45 x=10 -

  25. math

    Jake is making birdhouses to sell. The cost to make them is $80 for supplies plus $6.25 per birdhouse. He will sell them for $16 each. What is the minimum # of birdhouses he must sell to make a profit. I got he must sell more than 8 I did it by setting up

  26. Algebra

    4ã(50x)+3ã(2x)+ã(72x) Combine. Assume that all variables represent nonnegative real numbers.

  27. Math Word Problem

    a new blend of coffee will cost $3.90 per pound by mixing 2 coffees that sell for $2.75 and $5 per pound. what amounts of each coffee should be blended to obtain the desired mixture? (the total weight of the desired blend is 100 lbs) How would I solve

  28. Math Asap

    1. x/4 – 5 = –8 a) –27 b) –12

  29. algebra

    f(x)=4.75x, gives its domain and range

  30. Algebra II

    Having trouble factoring 3x^9- 75x

  31. Math

    Solve by Factoring: -0.125x^2+1.75x+7=0

  32. algebra

    10x^(6), 50x^(4) what is the LCM

  33. Math

    For some k>0 the lines 50x+ky=1240 and ky=8x+544 intersect at right angles at the point (m,n).find m+n.

  34. Intermediate Algebra Word Problem

    A map's key indicates that 3/4 of an inch represents 60 miles. How many miles does 2 1/4 inches represent? in/mi 3/4 / 60 = 2 1/4 / x 3/4x = 60(2 1/4) .75x = 60 (2.25) .75x/.75x = 135/.75 x = 18mi. Is this correct?

  35. Pre-Calculus

    Find the slope of the tangent line to the curve 2(x^2+y^2)^2=25(x^2−y^2) at the point (−3,−1)? Here's what I did: 2(x^4 + y^4) = 25(x^2-y^2) 2x^4 + 2y^4 = 25x^2 - 25y^2 8x^3 + 8y^3(dy/dx) = 50x - 50y(dy/dx) d/dx(8y^3 + 50y) = 50x - 8x^3 d/dx =

  36. Intermediate Algebra (Math)

    Mixed nuts. Oh Nuts! sells pistachio kernels for $6.50 per pound and almonds for $8.00 per pound. How much of each type should be used to make a 50-lb mixture that sells for $7.40 per pound? So far I have, this: 6.50x + 8 (50 - x) = 7.40 (50) 6.50x + 400 -

  37. Algebra

    2. W/4 - 4 = 3 a)-4 b)28****** c)3 d)11 3.X/5 + 6 = 10 a)44 b)30******* c)20 d)-20 4.-2(m-30)=-6m a)-15 b)-13************ c)-8 d)8 5.3.75x+3.7=1.7+1.75x a)10 b)-1 c)1***** d).1 Please check my answers :)

  38. math

    marissa earns $3.75 per hour at a local fast food restaurant. write an expression for the amount she earns and determine how much she is going to earn in 7 hours. A: 3.75x;$26.25 B: 7x;$26.25 C: 3.75x + 7x;$10.75 D: 7x;$3.75

  39. algebra

    marissa earns $3.75 per hour at a local fast food restaurant. write an expression for the amount she earns and determine how much she is going to earn in 7 hours. A: 3.75x;$26.25 B: 7x;$26.25 C: 3.75x + 7x;$10.75 D: 7x;$3.75

  40. math

    need to know how to find the distrbutive property of 50x62,159= (50x )+(50x )+(50x100)+(50x50)+(50x9)

  41. algebra1

    Marissa earns $3.75per hour at a local fast food restaurant. write an expression for the amount of money she earns and determine how how much she is going to earn in 7 hours. A.3.75x;$26.25 B.7x;$26.25 C.3.75x+7x;$10.75 D.7x;$3.75

  42. math

    I was hoping that some one could review my answers and tell me if im correct or not ^^ 1. -2 (m-30)=-6m a)-15 b)-13***** c)-8 d)8 2. 3.75x + 3.7=1.7 + 1.75x a)10***** b)-1 c)1 d).1 3.-9 - 6(w+5) a)-15w + 5***** b)-15w + 30 c)-6w + 39 d)-6w + 21

  43. Pre-Calculus

    A piece of equipment has cost function C(x)=50x^2 + 1000 and its revenue function is R(x)= 500x - x^2, where x is in thousands of items. What is the least number of items that must be sold in order to break even? 50x^2 + 1000 = 500x - x^2 50x^2 + x^2 +

  44. ALGEBRA

    Max charges $3.50 per hour when he mows lawns, plus $6.00 for transportation expenses. Which function rule represents the amount y Max charges to mow lawns for x hours? y = 9.50x y = 6.00x + 3.50 y = 3.50x + 6.00***** y = 2.5x

  45. Math

    1. –9x – 5 = –95 a) 17 b) 11

  46. Definite integral by parts (correction)

    Hello, I just wanted to verify if my work was good. Calculate the following integral by parts: ∫ upper limit is 1/5 and lower limit is 1/10. of 10sin^-1 (5x)dx so first I named the variables: u = 10 sin^-1 (5x) du = 50 / sqr(1-25x^2) dv = dx v = x so we

  47. Math

    3.75x + 3.7 = 1.7 + 1.75x A. 10 B. –1 C. 1 D. .1

  48. math

    after ploting the graph for y=1.55x+30 and y=2.75X where the cost y (£) as a function of the total number for swims x for the two options (member and non member) but question is what do the gradients and y intercepts of the lines represent in terms of the

  49. math

    2. Geoff planted dahlias in his garden. Dahlias have bulbs that divide and reproduce underground. In the first year, Geoff’s garden produced 6 bulbs. In the second year, it produced 12 bulbs, and in the third year, it produced 24 bulbs. If this pattern

  50. math

    2. Geoff planted dahlias in his garden. Dahlias have bulbs that divide and reproduce underground. In the first year, Geoff’s garden produced 6 bulbs. In the second year, it produced 12 bulbs, and in the third year, it produced 24 bulbs. If this pattern

  51. math URGENT

    please factor 2.75x^2-7x-120

  52. Math

    What does x equal in this question? -0.75x - 1.25 = 6.25

  53. word problems in algebra

    The cost of producing a number of items x is given by C = mx + b, in which b is the fixed cost and m is the variable cost (the cost of producing one more item). (a) If the fixed cost is $40 and the variable cost is $10, write the cost equation. (b) Graph

  54. finite mathmatics

    elimination method 5x + 6y = -75x - 3y = 146

  55. math

    Solve on Function Graph y= 28.5x + 6.75x + 42

  56. algebra

    factor completely 75x^4+35x^3-10x^2

  57. math

    factor the following expression completely 75x^4+35x^3-10x^2

  58. Calculus

    Let f(x) = x ^3. The equation of the tangent line to f(x) at x = 5 is y=75x - 250 What is the approximation for 4.6 ^3?

  59. Math

    I know the answer to (0.25x - 3) - (1.5x + 1.4) is 1.75x - 4.4 but I don’t understand how to get it, can you guys help me!

  60. Calc

    Let f(x) = x ^3. The equation of the tangent line to f(x) at x = 5 is y= 75x - 250. Using this, we find our approximation for 4.6 ^3 is ?

  61. Math

    A purse cost $375.00. It was 25% off. What was the original price? I figured out the answer ($500.00), but I did it the 'hard way'. Can someone show me a mathematical way or equation to do this in the future w/other percentages?? One way you can do this

  62. Algebra

    7x^12/5 - 50x^7/5 + 7x^2/5 = 0

  63. Math

    50x^2-72

  64. math

    could someone check my work please? I have to solve for 'x' Questions ~ 1. 3x – 19 = -2 Add ‘19’ to each side of the equation ~ -19+19+3x= -2+19 Combine like terms~ -19+19=0 0+3x= -2+19 3x= -2+19 Combine like terms~ -2+19=17 3x=17 Divide each side

  65. math

    could someone check my work please? I have to solve for 'x' Questions ~ 1. 3x – 19 = -2 Add ‘19’ to each side of the equation ~ -19+19+3x= -2+19 Combine like terms~ -19+19=0 0+3x= -2+19 3x= -2+19 Combine like terms~ -2+19=17 3x=17 Divide each side

  66. Math

    HELP?! 1.-9^2 2.(5x^9y)(-2x^-2y^-3) 3.(a^1b^-2) / (a^-2b^4) 4.(7x^-1/y^4)^-2 Scientific notation: 5) .0000745 Decimal Form: 6) 9.3*10^6 Solve: 7.3√-27 8.√(-5a)^2 Simplify: 9.√60x^5y^2 10.√75x^3 / √3x

  67. Math

    A tire shop that sells only one size of tire, .75 metres in diameter, decides to sell tires for big rigs that are 1.5 metres in diameter. If the cost of the .75 meter tires is $100.00 for four, how much will it cost for the 18 tires required for a big rig?

  68. Math

    factor 50x^2-72

  69. Math

    .50x+.20y=3.60 x+y=9

  70. math

    factor 50x^2-72

  71. Math help please

    factor 50x^2-72

  72. intermediate algebra

    50x^8 y^8/25x^4 y2 + 28x^7 y^6/14^3

  73. intermediate algebra

    50x^8 y^8/25x^4 y2 + 28x^7 y^6/14^3

  74. Algebra

    How do i graph y=.50x-445?

  75. Algebra 2

    Factor x^3-5x^2-50x/x^4+10x^3

  76. math - factoring

    I'm having some trouble factoring a problem. It's 75x^2 - 27 I know I can first factor out a GCF of 3 which leaves me with 3(25x^2 - 9) This seems to me to be a differences of squares but I cannot figure out what to do next. Thank you.

  77. algebra

    The function H described by H(x) = 2.75x + 71.48 can be used to predict the height, in centimeters, of a woman whose humerus (the bone from the elbow to the shoulder) is x cm long.

  78. Math

    Factoring / solve for x 5.50x = 0.02x^3 + 5x

  79. algebra

    how am I supposed to graph 1.25+.25x and .50x

  80. maths

    factorise: 1) x^4+10x^3+35x^2+50x+24 2) 3(a-b)(b-c)(c-a) 3) (a+b)^3-a-b

  81. Math

    50x to the 4th power/12x

  82. math

    how do i find the square root of 50x^10

  83. Pre-calc

    Solve these equations for x by factoring: 1) x(x-4)=12 2) 2x^3+50x=20x^2 3) 2x^2+x-6=0 Thank you for all your help!!!!

  84. algebra 2

    what are the real solutions of 750=x^3-15x^2+50x

  85. Algebra

    0.50x+ 10y+5z equals to hundred find x,y,z

  86. pre- algebra

    what is the simplest form ? 50x to the 4th over 12x

  87. Math

    I don't understand stand this 20y+1.50x=?????

  88. algebra

    simplify 23sqrt(32x^2)-2sqrt(50x^4)

  89. Math

    Given These Equations x+y=9.0 .50x+.20y=3.90 Find the values of X and Y.

  90. algebra 2

    what are the real solutions of 750=x^3-15x^2+50x

  91. math

    Ken's average driving speed is 25km/hr faster than Jim's. In the same length of time it takes Ken to drive 279 km, Jim drives only 204 km. What is Ken's average speed? Possible Answers: a) 93 km/hr b) 118 km/hr c) 43 km/hr d) 68 km/hr Let x equal the speed

  92. maths

    Factorize: 1.) 64x^3-y^3 2.) x^4+10x^3+35x^2+50x+24 3.) x^3/8-64-3x^2+24x

  93. Math

    Find the Synthetic Division: (10x^4-50x^3-800)/(x-6)

  94. math

    find all solution sets to the equation 2x^3+12x^2+50x=o

  95. Math

    Find the Synthetic Division: (10x^4-50x^3-800)/(x-6)

  96. Math

    Solve this in Long Division. (x-6)/(10x^4-50x^3-800)

  97. pre-algebra

    16x = 21.50x how many months till they equal the same amount

  98. biology

    if you want to make 50 ml of a 1x TAE solution fro a 50X stock, how would you prepare it?

  99. college algebra

    a rectangular box has a volume of V(x)=x^3+13x^2+50x+56 cubic inches. The height of the box is x+7 inches. The width of the box is x+4 inches. Find the length of the box in terms of x.

  100. Linear equations

    I keep getting this wrong and can't figure out why {60x+10y=-16 -50x-100y=50 The solution to the system is:

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