# sara

Newest questions and responses by sara
1. ## Math

The question says using the formula P with a small n below it(Pn) Pn=PMT(1-(1+i)^-n/i) the full parenthesis is divided by the I just to be clear Pn=present amountborrowed n=number of monthly pay periods PMT=monthly payment i=interest rate per month A)

2. ## math

solve the equation below algebraically and express the result in simplest radical form 13/x=10-x I did 13/x=10-x multiplied each side by x and then subtracted 13 to get 0=13-(10x-x^2) x^2-10x+13=0 x=(10+/- square root of 100-52)/2 x=(10=/- 4square root 3)

3. ## math

If g(x)=(ax square root of 1-x)^2. Express g(10) in simplest form I did g(10)=(a(10) square root 1-10)^2= (a*10)^2(1-10)=1000^2(-9)= -9000^2 Is this correct? thanks for checking my work

4. ## math

which ordered pair is in the solution set of the system of equations shown below? y^2-x^2+32=0 3y-x=0 I did y^2-3y^2+32=0 y^2-9y^2=-32 8y^2=32 y^2=32/8 y^2=4 y=+/-2 x=3(2)=6 {2,6} is this right? thank you

5. ## math

solve algerbraically for x log27(2x-1)=4/3 I did 2x-1=27(4/3) 2x-1=3^4 2x=82 I got x=41 does this look right? thank you

6. ## Math

The question is the expression (m^2/m^1/3)^-1/2 is equivalent to: I did (m^5/3)^1/2 m^-5/6 1/m^5/6 so my answer is 1/ the 6th root m^5 sorry I don't know how to print a square root symbol. Is this correct? Thank you for checking my work

7. ## Maths .lifescince. Tourism . geography L.o

How can sport destract nation building

8. ## math

the question is find the sum of the first eight terms in the series 3-12+48-192+... is 1)-13,107 2)-21,845 3)-39,321 4)-65,535 I got that a1 is 3 and a8 was -49152. I wanted to make sure this was a geometric sequence with a r of -4 and tat the + didn't

9. ## math

find the equation of the inverse of f(x)= 2^x-7 + 5 I did x=2^y-7+ 5 -5 -5 x-5=(2^y)(2^-7) 128*x-5=2^y answer y=log of 2 (128(x-5)) I switched x and y and solved for y Is this correct? Thanks for checking my work.

10. ## Algebra 2

solve for x: 3^2x+3=7^x+1 I did 2x+3=log0f3(7)+ logof3(7) (2-log of 3(7))x=log of 3(7)-3 x=log of 3 (7)+log of 3 (3^-3)/log 0f 3 (3^2)-log of 3 (7) x=log of 3 (7-1/3^3)/log of 3(9/7) log of 3(7/27)/log of 3(9/7) answer log of 9/7(7/27) Is this correct?

11. ## algebra 2

Which is equivalent to y=log of 7(x) a)y=x^7 b)x=y^7 c) x=7^y d) y=x^1/7 I thought the answer was c x=7^y Is this correct? thank you

12. ## Physics

Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use, however, is a baseball, a stopwatch, and a friend on the ground below with a long measuring tape. Bob is a pitcher, and knows that

13. ## Math

GEOMETRY 7TH GRADE You asked • 7m I need to understand this given statement in more depth. Please help. Two rectangles with a length to width ratio of 1 to 4.

14. ## english

what would be some indirect and direct impacts to my family (live in Canada) due to the ethical issue of pharmaceutical companies and the conflict over making HIV/AIDS drugs available in poor countries ? I dont know if there would be many direct impacts

15. ## english

I have to conduct a team task anaylsis, cognitive task analysis and task analysis of my job as being a student? Im not sure how to do this. I have already thought of all related behaviours and duties for each but again can anone give me an example? or

16. ## Science

1 kg of N2 is mixed with 3.5 m^3 of H2 at 300k,101.3kpa and sent to ammonia converter , product analysed 13.7℅ NH3,70.32℅H2,15.98℅ N2 find ℅ conversion, ℅excess

17. ## Physics

Two points, P and R, are equidistant from the positively charged object, A. They are on opposite sides of the charged object. Is the electric field at point R equal in magnitude and direction when compared to point P? Or is it equal in magnitude but

18. ## Math

The polynomial expression: (1/16x^2 + 1/3x + 4/9) can be written in the form (Ax+b)^2. The value of the product, AB, to the nearest one hundreth, is____?

19. ## math

x-21/(x^2-9) - x/(3-x) so I did x-21/((x-3)(x+3)) - x/-(x-3) x-21+x(x+3)/((x-3)(x+3)) x-21+x^2+3x/((x-3)(x+3)) 4x-21+x^2/((x-3)(x+3)) x^2+4x-21/((x-3)(x+3)) x(x+7)-3(x+7)/((x-3)(x+3)) (x+7)(x-3)/((x-3)(x+3)) the x-3 cancel out so the answer is x+7/x+3 is

20. ## Math

1/x^2+3x+2 + 2/x^2-1 I first did 1/x^2+2x+x+2 +2/(x-1)(x+1) 1/x(x+2)x+2 +2/(x-1)(x+1) 1/x+2(x+1) +2/(x-1)(x+1) x-1+2(x+2)/(x+2)(x-1)(x+1) x-1+2x+4/(x+2)(x-1)(x+1) 3x+3/(x+2)(x-1)(x+1) 3(x+1)/(x+2)(x-1)(x+1) the x+1 cancel out so 3/(x+2)(x-1) 3/x^2-x+2x-2

21. ## Math

The problem is… 8X^4/25-9x^2• 3X^2- 8X+5/x^2-1~4x^3/x^2+2x+1 NOTE: I used~ to equal a division symbol So I did 2x/-(3x-5)(5+3x)•3x(x-1)-5(x-1)/(x-1)(x+1)•(x+1)^2 2x/-(3x-5)(5+3x)•(x-1)(3x-5)/(x-1)(x+1)•(x+1)^2 2x/5+3x•-1(x+1) -2x^2+2x/5+3x Is

22. ## History

Can you help me find a war that is currently going on in the world and 5 reasons why?

23. ## math

Project - would you please check my answers? I am working on a project and my linear equation came out to be: y = 1502.9x - 2847386 This project is about waste and recycling so the equation came from a table that gave a few years and the tons of waste in

24. ## Physics

A pitcher throws a fastball during a ballgame. The velocity of the ball is 44 m/s. The mass of the ball is 150 grams. The catcher catches the ball in his glove at 0.2 seconds. a) Compute the impulse the glove exerts catching the ball. I'm lost on part a.

25. ## math

find the vertex,focus and equation of the direction of y=-1/16(x-6)^2+3 Y=1/2p(x-h)^2+k p=8 h=6 k=3 so I now got (6,3) when doing it over again. I now got so vertex is (6,3), focus is (6,7) and directrix = y=-1 Is these corrections now right? Thank you for

26. ## math

find the vertex,focus and equation of the direction of y=-1/16(x-6)^2+3 Y=1/2p(x-h)^2+k p=8 h=6 k=3 (6,3) so vertex is (6,3), focus is (6,-1) and directrix = y=7 Is this correct?

27. ## math

a baseball is hit straight up from a height of 6 feet with an initial velocity of90 feet per second. given the equations=-16t^2 +v0t + s0, that models the height of the ball,s, as a function of time ,t where the initial height of the ball is s0 and the

28. ## math

Which of the following could identify the transformation of a parabola with a vertex of (-4,-6) to a parabola with a vertex of (1,-6) 1) f(x)+5 2) 5f(x) 3) f(x+5) 4) f(x-5) I added the two x values. so you will need to add 5 to transform it. my choice is

29. ## math

The initial cost for attendance to carnival A is \$12and each ride costs \$2. The initial cost for attendance to carnival B is \$16 and each ride cost \$1.50. a) in function notation write A(x) to represent the total cost of attending carnival A and going on x

30. ## math

This question has a few parts to it. I tried but not sure if they are correct. A boy standing on top of a building in Albany throws a water balloon up vertically. The height (h) in feet, of the water is given by the equation h(t)=-16t^2+64t +192. where the

31. ## math

The factors of X^4-13x^2+36 when factored completely are I did x^2(x^2-4)(x^2-9) (X+3)(x-3)(x+2)(x-2) it was multiple choice 1. (x^2+9)(x^2+4) 2. (x^2+9) (x+2)(x-2) 3. (X+3)(x-3)(x+2)(x-2) 4. (x+3)(x+3)(x+2)(x+2) my answer is choice 3. Thanks for checking

32. ## math

In order to successfully perform a trick, a flying trapeze artist must swing along a parabolic path that is equidistant from the floor and the pivot point where the trapeze rope is attached. The rope is attached at the ceiling 8 feet above her starting

33. ## math

The expression X^2(x+3)-9(x+3) is equivalent to (x+3)^n(x-3) when n equals? I got an answer of 2 I did X^2(x+3)-9(x+3) (x+3)^n(x-3) 4(5)-9(5)=-25 -25=(5)^n(-1) n=2 Is this correct? Thank you for checking my work

34. ## Chemistry

Restart the PhET simulation and set it up in the following manner: select Oscillate, select No End, and use the parameters in parentheses by sliding the bars for Amplitude (1.00 cm), Frequency (1.20 Hz ), Damping (none), and tension (highest). Using the

35. ## math

If Y=(X) has a range of [3,18], what is the range of Y =1/3f(x-2)-4? I took the first 3-4=-1 Then the 18-4=14 R[-1,14] But I got it wrong so can you please explain the steps

36. ## Math- algebra 2

If Y=(X) has a range of [3,18], what is the range of Y =1/3f(x-2)-4? I took the first 3-4=-1 Then the 18-4=14 R[-1,14] But I got it wrong so can you please explain the steps

37. ## linear algebra

Let T be the plane 2x−3y = −2. Find the shortest distance d from the point P0=(−1, −2, 1) to T, and the point Q in T that is closest to P0. Use the square root symbol '√' where needed to give an exact value for your answer. I need help with this

38. ## linear algebra

Let T be the plane −x+2y = 4. Find the shortest distance d from the point P0=(2, 2, 1) to T, and the point Q in T that is closest to P0. Use the square root symbol '√' where needed to give an exact value for your answer. I know I have posted this many

39. ## linear algebra

Let L be the line passing through the point P=(−3, −1, −5) with direction vector →d=[4, 0, 4]T, and let T be the plane defined by 4x−y−3z = 16. Find the point Q where L and T intersect. please help..

40. ## Linear Algebra

Let T be the plane −y+2z = −8. Find the shortest distance d from the point P0=(−5, 4, 2) to T, and the point Q in T that is closest to P0. Use the square root symbol '√' where needed to give an exact value for your answer. d = 0 Q = (0, 0, 0)

41. ## Math

A rectangular plot of land that has an area of 1200 sq. ft, will hold a rectangular garden whose length is 8' more than twice the width, and will be bordered by a 3' wide sidewalk for pedestrians. Write a function that describes the area of the garden with

42. ## social studies

What is the Babylonian King Hammurabi most remembered for today? A. his code of law B. his great wealth C. his military conquests D. his public works projects

43. ## English

Hello, is this sentence grammatically correct? The lecturer explained to us how greenhouse gases come about, and we soon wondered what we could do to forestall disaster.

44. ## chemistry

what is the number of molecules of c2h6o required to have 135 atoms in total?

45. ## english-sentence

is this sentence correct? I have a loving two year old son, whom can sometimes be a handful.

46. ## math

Two cars are side by side. One is 3.9 meters long. The other is 6% shorter. How long is the second car? I know the answer is 3.7, but how?

47. ## Organic Chem

what is the pka of anhydride? i've searched the whole web and can't seem to find the pka of the functional group.

48. ## Chemistry

Calculate molarity 9.8g r 500 ml

49. ## Calculus

Consider the functions A(x, y) = x^2y + xy − 3xy^2, and B(x, y) = xe^xy − y. (a) Calculate the x derivative of A, or Ax. (b) Calculate the y derivative of A, or Ay. (c) Calculate the x derivative of B, or Bx. (d) Calculate the y derivative of B, or By.

50. ## math

Christina finances a piano for \$3,070 by taking out an installment loan for 24 months. The payments were \$153.50 per month and the total finance charge was \$614. After 14 months, Christina decided to pay off the loan. After calculating the finance charge

51. ## math

Scott purchases a piano costing \$2,630 by taking out a 13% add-on interest installment loan. The loan requires a 15% down payment and equal monthly payments for 5 years. How much are Scott's monthly payments?

52. ## math

You purchase a hot tub costing \$4,600 by taking out a 13% add-on interest installment loan. The loan requires a 15% down payment and equal monthly payments for 4 years. How much are your monthly payments?

53. ## Math

Given that g is the inverse function of f, and f (3) = 4 , and f ′(3) =5 , then g′(4) = -1/5 -3/5 3/5

54. ## physics

Determine the x and y components of the following three vectors in the xy plane. 1) A 19-m/s velocity vector that makes an angle of 40° counterclockwise from the -x direction. x: 2) y: Explain please!

55. ## Chemistry

hydrobromic acid (50.5) calculate the concentration in mol/L. (MW HBr: 80.91 g/mol, density: 1.49 g/mL)

56. ## Computer science C++

3. After following statements have executed, find the value of the variable a. int a=5; while (a

57. ## Math

Jason was hired to mow a lawn that covers an area of 2 3/4 acres it took him 4 1/8 hours to complete the job what was his unit rate and hours per acre you multiply the numerator and a complex fraction by the reciprocal of the denominator to calculate our

58. ## math

An object is dropped from a balloon 3600 feet above the ground. Find the time it takes to reach the ground if the height of the object is given by the equation h(t) = –16t^2 + 3600

59. ## Math

The length of a rectangle is three times as long as its width. Its area is 675 square feet. a. Write an equation that demonstrates the given information. b. Find the dimensions of the rectangle.

60. ## history

Which of the following best applies to religion in the High Middle Ages? 1. Pilgrimages to holy shrines declined as the practice of indulgences increased 2. The Bible was translated and widely read in the vernacular (every day, spoken) languages 3. The

61. ## math

Determine whether ∆QRS is a right triangle for the given vertices. Explain. Q(18, 13), R(17, –3), S(–18, 12)

62. ## History

1. In the Lindisfarne Gospels, what symbol represents St. Mark? (The Winged lion?) 2. In the Lindisfarne Gospels, who is the only evangelist who is pictured facing the reader directly? (I think its John) 3.In the Book of Kells, how many evangelists are

63. ## math

Determine whether ΔGHI is a right triangle. G(-2, 1), H(3, -1), I(-4, -4). Can you please show the steps too? Thank you!

64. ## history

Which European country was controlled by Muslims throughout the Middle Ages, and what year did Christian rulers finally take power away from the Muslims?

65. ## math

The vertices of a triangle are L(1,3), M(4,0), N(-4,1) LO is a median of the triangle. What are the coordinates of point O? Explain.

66. ## math

The value of Sara's new car decreases at a rate of 8% each year. 1.Write an exponential function to model the decrease in the car's value each month. 2.Write an exponential function to model the decrease in the car's value each week. 3.Write an exponential

67. ## English

How to re-word this please? The Emmett Till Unsolved Civil Rights Crimes Reauthorization Act of 2016 will be considered by the House on Wednesday, December 7. under the rules. S. 2854 was proposed on April 26, 2016, by Senator. Richard Burr Republican of

68. ## English

How can I re-word this to start my summary ? On Wednesday, December 7, 2016, the House will consider S. 2854, the Emmett Till Unsolved Civil Rights Crimes Reauthorization Act of 2016, under suspension of the rules. S. 2854 was introduced on April 26, 2016,

69. ## Math

Give the domain and range of the following functions: f(x) = 1⁄4x – 7 g(x) = 3x2+ 2

-2/5x-9

71. ## Exponential and Logarithmic functions

A certain material decays at a rate of 1.9% per year. The sample is 260 grams. How much will be left in 11 years? How long will it take to have only a 100g sample left?

72. ## Opreating System

Hi, i need help with this opreating system homework. Part 1: you need your C program to do the following in order to achieve this desired output. (1) navigate the subfolders of the proc folder looking for those folders holding information about processes

73. ## Opreating System

Hi, i need help with this opreating system homework. Part 1: you need your C program to do the following in order to achieve this desired output. (1) navigate the subfolders of the proc folder looking for those folders holding information about processes

74. ## Math

For the following geometric sequence find the recursive formula and the 5th term in the sequence. In your final answer, include all of your work. {-4, 12, -36, ...}

75. ## Biology

What is a protein that transports ions across the plasma membrane without requiring energy or changing shape?

76. ## psychology

does someone know a good website that includes b.f. skinner in behavioral approach ,or just inform about him?

77. ## MATH

A prism has a cross section that is a right angled triangle.its volume is 60 cm^3.What could the dimensions of prism be?

78. ## maths

Aprism has a cross section that is a right angled triangle.Its volume is 6 cm^3.What could the dimentions of this prism be ? .....cmby..........cmby.....cm(2)

79. ## Physics

an object of mass m is being weighed in an elevator that is moving upward with an acceleration a. What is the eesult if the weighing is done using a spring balance and a pan balance?

80. ## Math

How would I go about solving y - 6 is greater than or equal to = 12?

81. ## Math

y + 5 is equal to or greater than 7 Is y less than or greater than 12? Please check, and help correct.

82. ## Math

x/4 + 1 = -6 I'm not sure the process to solve the equation, could I have help?

83. ## physics

If 335 g of water at 65.5 °C loses 9750 J of heat, what is the final temperature of the water? Liquid water has a specific heat of 4.18 J/(g.°C). °C (Answer a number only, no units. Round to the tenth place). This is an example of an endothermic or

84. ## algerbra

can someone check my work for this question? the question is to graph the function of square root of x plus 2 with the plus 2 not being in the square root my x values were 0,1, 4, 9, and 16 my y values were 2, 3, 4, 5, and 6 the next part says to write the

85. ## algerbra

can someone check my work for this question? the question is to graph the function of square root of x plus 2 with the plus 2 not being in the square root my x values were 0,1, 4, 9, and 16 my y values were 2, 3, 4, 5, and 6 the next part says to write the

86. ## math

The question is: the table below lists the total cost for parking for a period of time on the street in NYC. The total cost for any time up to and including the hours parked. For example, parking up to and including 1 hour would cost \$1.25; for 3.5 hours

87. ## Algebra

I have a few of these questions that I need help on, please help me! 1. 16x^2 + 2 + 2x - 15x^2 - 1 + 14x 2. 2x^2 + 8 8 - 4x + 3x - 6x^2 + 7 3. 2x^2 = 6x - 7x +8 - 3x^2 + 1 5. (m^2 - m - 4) + (m - 5) 6. (5x^2 + x - 3) - (-2x^3 + 4) 9. 64^10/64^5 10.

88. ## math

On the set of axes below, graph the function represented by y=cubed root of x-2 for the domain -6< or equal to x< or equal to 10. x column I did -6, 1, 2 , 3 ,10 y column I did -2, -1, 0, 1, 2 Then I plotted these points. Is this correct? Thanks for

89. ## Math

An employee earns \$200 for 14 hours work. Assuming he is paid by the hour, how much will this employee earn in 35 hours?

90. ## math

my watch is twelve minutes slow .the bus for which I am waiting should have arrived at 3.49pm but it is five minutes late. What time would my watch show when the bus arrives?

91. ## geometry

Find the lateral area of a regular square pyramid whose slant height is 20 and whose base has an edge length of 7

92. ## statistics

Recent studies, as summarized, for example, in E. Mortensen et al. (2002). The association between duration of breastfeeding and adult intelligence. Journal of the American Medical !@#\$%^& o ciation , 287 , 2365–2371, suggest that breast-feeding of

If

If

95. ## statistics

The professor teaching a large introductory class gives a final exam that has alternate forms, A, B, and C. A student taking the exam using Form B is upset because she claims that Form B is much harder than Forms A and C. Discuss how percentile point data

96. ## math

This is a multiple choice question. What is the solution of the equation 2(x+2)^2-4=28 1)2 only 2)6 only 3)-2 and 6 4)2 and -6 I did (2x+4)(2x+4)-4=28 4x^2+8x+8x+16-4=28 4x^2+16x+12=28 4x^2+16x=16 This is where I get stuck, can you help? thank you

97. ## math

The equation d=0.12v^2 + 2.1v models the distance d in feet it takes a car traveling at a speed of v miles per hour to come to a complete stop. Graces car was able to stop after 350ft on a highway. If the speed limit in the area was 35 miles per hour, was

98. ## Math

Michael can travel at 166.35mph in his Ferrari. How far can he travel in 5 hours?