# Neil

Popular questions and responses by Neil
1. ## Physics

An object is 14 cm in front of a diverging lens that has a focal length of -7.9 cm. How far in front of the lens should the object be placed so that the size of its image is reduced by a factor of 1.9?

2. ## Math

Write a rule for the nth term of the geometric sequence. Then find a7. 1. 7, -4.2, 2.52, -1.512, ...

3. ## geometry

A point p(x,y) is on the line through A(-4,4) and B(5,2).Find (a) the coordinates of P given that the segment AB is extended through B to P so that P is twice as far from A as far from B,and (b) the coordinates of P given that AB is extended through A to P

4. ## Math

Solve the compound inequalities. Write the solutions in interval notation. Graph your solution on a number line. 1. 2(3x + 1)< -10 or 3(2x - 4) ¡Ý 0 The or means union of these inequalities. 2. 5(p + 3) + 4 > p - 1 or 4(p - 1) + 2 > p + 8

5. ## Quantitative Chemistry

Which of the following statements about the reaction, 4 HCl(aq) + MnO2(s) MnCl2(aq) + 2 H2O(l) + 2 Cl2(g), is correct? a.)The manganese atoms are oxidized. b.)The oxygen atoms are reduced. c.) The chlorine atoms are both oxidized and reduced. d.)All of

6. ## Computer Science

How would I determine heapsize for 16.0 GB RAM? heapsize - Specifies the amount of heap (or free store -cache, an area of memory used for dynamic memory allocation) the engine will use. So to do the calculation, will I have to do 16.0 x 1024 first to give

7. ## Algebra

Simplify the radical. Assume that all variables represent positive real numbers. cube root (120m^20 n^2 / mn^14)

8. ## Math

Write an equation of the line that passes through the points (-8, -1) and (-5, 9).

9. ## Math

Find the sum of the geometric series. 10 1. Ó 5(2)^i - 1 i= 1 12 2. Ó 8(3/2)^i - 1 i= 1

10. ## chemistry

How many milligrams of a mixture containing equal numbers of moles of CH4 and N2 at 10 ATM total pressure will dissolve in 1 L of water at 20°C ??? Convert 16g/mol CH4 28g/mol N2 ???need density .998g/ml H2O

11. ## Math

Guess my rule Fit the rule AEFHIKLMN Do not fit the rule BCDGJOp

12. ## Physics

A mouse sits on a turntable 14.8 cm from the center. The coefficient of static friction is 0.49. The angular velocity increases steadily from zero. At what angular velocity does the mouse begin to slide? I believe that the max frictional force can be is

13. ## Physics

A series circuit contains only a resistor and an inductor. The voltage V of the generator is fixed. If R = 15 and L = 5.6 mH, find the frequency at which the current is one-half its value at zero frequency. ?? Hz Thanks!

14. ## Math For College Readiness

Simplify the Complex Fractions 1. 8a / 3b^2 / 6ab /5 2. 42x^2 + 14x / x - 7 / 2 + 6x / 21 - 3x 3. 9 + 3 / x / x / 4 + 1 /12 4. (x^-1 + x^-2)divided by (9x^-2) Ans. #1: 20 / 9 Ans. #2: 42x^2 + 6x + 4 / -2x + 14 Ans. #3: 144 / x / 3x + 1 I don't know how to

15. ## Physics

Two carts of identical mass (500 kg). One is traveling south and the other is traveling east. They collide (inelastic collision) and slide 3 meters, 30 degrees south of the east. The total friction force is 10,000N. Calculate the initial velocities of

16. ## Env. Sci.

Explain how an organism can be dead, yet still considered a biotic factor.

17. ## Math

Solving Inconsistent Systems and Dependent Systems 1. 3x - 2y= 1 -6x + 4y= -2 2. 6y=14 - 4x 2x= -3x - 7

18. ## science

if two carbon atoms are joined by a triple bond how many other atoms can each carbon atom bond with

19. ## science

if two carbon atoms are joined by a triple bond how many other atoms can each carbon atom bond with

20. ## Math

Two points for each of two lines are given. Determine if the lines are parallel, perpendicular, or neither. L1: (4, -6) and (3, -2) L2: (3, -1) and (7, 0)

21. ## English

In "Speech to the Virginia Convention" there is a motif of: a. Storm imagery b. Light imagery c. Snow imagery d. Storm & Light imagery e. Storm & Snow imagery

22. ## physics

two boys on ice skates hold a rope between them. One is heavier than the other. The light weight boy pulls on the rope. how will they move and who will move faster?

23. ## geometry

A person 6 ft tall is standing near a treet light so that he is 4/10 of the distance from the pole to the tip of his shadow.How high above the ground is the light bulb? If the persons head is exactly 5ft from the light bulb how far is the person from the

24. ## geometry

A 30-lb child is siting at A(2,3) and a 50-lb child is at B(12,7) where units are feet .Find the point P between A and B which could be used as the fulcrum of a teeter board putting the two children in equilibrium. 30 AP=50 PB or (AP/PB)=5/3

25. ## math

how do i get the common denominator for 3 4 5 6 and 7?

26. ## SCIENCE

What are the products of a chemical reaction involving NaCl, HNO3, and AgNO3?

27. ## chemistry

What are the products of a reaction between NaCl, HNO3, and AgNO3?

28. ## geometry

I am trying to find the interior and exterior angles of a 9 sided polygon .

29. ## chemistry

2Sb + 3I2->2SbI3 Determine the limiting reactant and theoretical yield when 1.2 mol of Sb and 2.40 mol I2 are mixed.

30. ## algebra

John has 36 books in his locker. He has text books,library books, and telephone books. How many books of each kind does he have if: lib + tel= 2x text books and text + tel = 3x lib books I think it'd be easier to let T,L and B denote text books, library

31. ## math

what are the possible dimensions of a rectangular prism with a volume of 40 cubic inches

32. ## Math

Solve the equation and show the check of the potential answer(s). If any answers are excluded values, state this on your answer sheet. a2 + 4a - 5/a2 + 2a - a + 3/a + 2 =1/a2 + 2a Can someone please show me how to do this problem with checks? I have

33. ## Math

If you decrease 300 by 5%, what is the result? A. 15 B. 150 C. 285 D. 315

34. ## Chemistry

a+bc (fast) c+d->e (slow) e->f+b (fast) How do you determine the overall equation for these reaction mechanisms?

35. ## Genetics

Obviously, there was no point in history in which the clade that developed into ‘humanity’ consisted of only one female individual. Yet every mitochondrial genome in any current human population can be traced back to a single woman: ‘Mitochondrial

36. ## Algebra 2

Is my answer correct? Directions: Determine whether y is a function of x. Problem: x^2+y^2=16 Answer: x^2+y^2+-x^2=16+-x^2 y^2=-x^2+16 y= ±√-x^2+16 y is not a function of x

37. ## Physics

a speed boat is moving though the water at a speed of 28 m/s when the engine stalls. the boat comes to a halt over 120m, what is the time it takes to stop and what is the acceleration. im trying to figure it out but i don't know what kinematic equation to

38. ## algebra

Assume the national debt D increases at an annual rate of 5% and that the debt in 2000 was 57 billion dollars. This means that D = 57(1.05t ), where t is the number of years after 2000. In what year will the debt have doubled?

39. ## matrices

Given B = 0 1 0 0 0 1 1 0 0 , show that B^3 = I

40. ## Phyiscs

if the brakes of an automobile are applied from 70km/h to 35km/h, how many meters does the car travel during this deceleration?

41. ## Math

g(n) = n^3 - 5n^2 ; Find g(-4n)

42. ## Math

At a certain construction site, there is a pile containing 55 tons of sand. Four trucks, each of which holds 11.4 tons of sand, are filled from this pile. How many tons of sand remain in the pile? A. 9.4 B. 16.2 C. 20.8 D. 32.2 E. 43.6

43. ## math

amount of matter in an object

44. ## math

Split 597 into three parts such that these are in A.P. and the product of the two smallest parts is 796.

45. ## Physics ASAP

An object is thrown from a height of 8.0m, with a horizontal velocity of 28.0m/s. How far will this object travel horizontally before hitting the ground?

46. ## Assisting With Medications

Your client is recieving IV therapy. List 2 observations under each of the following categories that you would repoort to your supervisor as being a problem. a) site (local) b) client (systemic)

47. ## Physics

When point charges q1 = +3.1 ìC and q2 = +5.1 ìC are brought near each other, each experiences a repulsive force of magnitude 0.54 N. Determine the distance between the charges.

48. ## Math For College Readiness

Simplify: (3w - 1) / (2w^2 + w - 3) - (2 - w) / (w - 1) - (w) / (1 - w)

49. ## Math For College Readiness

Simplify: y - 3 / y - 2 - y + 1 / 2y - 5 + -4y + 7 / 2y^2 - 9y + 10

50. ## Physics

A block of 1.0 kg rests on the gap between two boards. Putty is throw from the underside of the block and makes contact with it. The Putty has a velocity of 15 m/s and weighs 0.3kg. Calculate the max height the block travels after contact with the putty,

51. ## Physics

Two blocks rest on two frictionless ramps. They are connected at the apex of each ramp by a string and pulley. The angle of ramp A with the ground is 45 degrees. Mass of Block B (on Ramp B) is 2 times that of Block A. What does the angle of Ramp B with the

52. ## Math

Solve by using the substitution method. (Please keep fractions as they are, don't convert to decimal.) y= 1/7x + 3 x - 7y= -4

53. ## Math

Solve by using the subatitution method. (Please keep fractions as they are, don't convert to decimal.) 1. y= -3x - 1 2x - 3y= -8 2. 1 + 3y= 10 5x + 2y= 6 3. 2x - 6y= -2 x= 3y - 1 4. y= 1/7x + 3 x - 7y= -4

54. ## Math

Solve the system by using the substitution method. y= 3/4x - 4 -x + 2y= -6

55. ## Math

Determine if the ordered pair is a solution to the system. -5x - 7y= 4 y= 1/2 x - 1 a. (2,2) b. (2, -2)

56. ## Math

Find the function values given f(x)= 6x^2 - 4. f(0)

57. ## Math

Ally loves the beach and decides to spend the summer selling various ice cream products on the beach. From her account course, she knows that her total cost is calculated as Total Cost= Fixed Cost + Various Cost She estimates that her fixed cost for the

58. ## Math

Determine if (-3, 4) is a solution to 5x= -15.

59. ## Math

1.Let f(x)= x^2 - 5 and g(x)= 3x^2. Find g(f(x)). 2. Let f(x)= x^2 - 4 and g(x) -3x^2. Find f(g(x)).

60. ## Math

1. Let f(x)= x^2 - 5 and g(x)= 3x^2. Find g(f(x)). 2. Let f(x)= x^2 - 4 and g(x)= -3x^2. Find f(g(x)).

61. ## Math

Multiply the expressions. Simplify the result. d^2/ ef * 5e^5f/ 4d

62. ## Math

Find the sum of the arithmetic series. 20 (Sigma Sign) 2n + 7 x= 1 Formula: Sn= a1 (1 - r^n / 1 - r)

63. ## Math

20 (Sigma Sign) 2n + 7 k= 1

64. ## English

Early in the story, London writes "The animal was depressed by the tremendous cold. It knew that it was no time for traveling". This passage alerts you to possible trouble ahead. Locate four other passages that foreshadow later events. Explain the link

65. ## Math

Evaluate the logarithm log3 729

66. ## English

How is the story "To Build a Fire" by Jack London a good example of Naturalism?

67. ## math

Tell whether the sequence is geometric. Explain why or why not. 1. 4, 16, 64, 256, 1024,... 2. -1/4, 3/8, -3/16, 1/32, -3/64, ... 3. 0.75, 1.5, 2.25, 3, 3.75, ...

68. ## Math

Larry & Willa are each reading the same book. Larry has read 2/3 of the book. Willa said that she has read 4//6 of the book, so she read more. Is Willa correct? Explain?

69. ## Math

Each cube below is made up of smaller cubes, but the large cubes are not solid. They had tunnels through them. • The first cube originally had 27 small cubes, but the tunnel removed 3 cubes. • The second cube originally had 64 small cubes, but two

70. ## Biology

The problems of survival of animals on land are very different from those of survivial of animals in an aquatic environment. Describe four problems associated with animal survival in terrestrial environments but not in aquatic environments. For each

71. ## Math

Make a picture of: a model of the earth, a stop sign, a dinner plate and a clock. Which one doesnt belong? Why?

72. ## Math

How could you describe a cylinder to someone who has never seen one?

73. ## physics

a jogger runs with a veloicty of 6km/h (25 degrees N of W) for 35 min and then changes direction, Jogging for 20 min at 4.5km/h (65 degrees E of N). Using the parallelogram method for vector addition, determine the joggers total displacement and his

74. ## math

y*x=30 I need super help please

76. ## calculus

A street light is at the top of a 20 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 6 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 35 ft from the base of the pole?

77. ## calculus

Water is leaking out of an inverted conical tank at a rate of 1600.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 10.0 meters and the diameter at the top is 3.5 meters. If the

78. ## calculus

Water is leaking out of an inverted conical tank at a rate of cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height meters and the diameter at the top is meters. If the water level is

79. ## Physics

an Ampere is the flow of 6.28 X 10^18 electrons per second past a fixed point in a conductor. how many flow past a fixed point if the current is 17.5 mA?

80. ## statistics

1. A researcher is interested in comparing the effectiveness of three different kinds of therapy for anger problems. Eight participants are randomly assigned to three treatment conditions: Cognitive Therapy (CT), Cognitive-Behavioral Therapy (CBT), and

81. ## Chemistry

A standard solution of FeSCN2+ is prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN. The equilibrium concentration of FeSCN2+ ([FeSCN2+]std) for this standard solution is assumed to be M. What permits this assumption? A. The

82. ## statistics

2. A researcher hypothesized that the pulse rates of long-distance athletes differ from those of other athletes. He believed that the runners’ pulses would be slower. He obtained a random sample of 10 long-distance runners. He measured their resting

83. ## statistics

5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can you observe in the relationship between IQ and psychology, psychology and statistics, and IQ and statistics? Using a

84. ## geometry

Prove a triangle is an isosceles triangle ith P(2,3) A(5,7) and T1,4)

85. ## Physics

A cheetah is hunting. Its prey runs for 3.07 s at a constant velocity of +11.32 m/s. Starting from rest, what constant acceleration must the cheetah maintain in order to run the same distance as its prey runs in the same time?

86. ## science

Ca3(PO4)2 + 2H2SO4 = 2CASO4 + Ca(H2PO4)2 How many moles of CaSO4 can be produced by the reaction of 0.39 moles of Ca3(PO4)2 with excess H2 SO4?

87. ## Algebra

Solve the system of equations by an algebraic method. Leave answer in exact form. 4x² - 7y² = 21 x² + 2y² = 99

hi can you help me with this problem please, thank you.----------------- If the speed of an experimental car is decreased by 8km/h it completes a 140 km trip in 2 hours more than had it been traveling at its usual speed. Determine its usual speed.

hi can you help me with this problem please, thank you.----------------- If the speed of an experimental car is decreased by 8km/h it completes a 140 km trip in 2 hours more than had it been traveling at its usual speed. Determine its usual speed.

hi can you help me with this problem please, thank you.----------------- If the speed of an experimental car is decreased by 8km/h it completes a 140 km trip in 2 hours more than had it been traveling at its usual speed. Determine its usual speed.

91. ## physics

A basketball is shot from 2 meters up at an angle of 60° above the x axis at an initial velocity of 9 m/s.What is the maximum height the ball will reach?

92. ## math

What is the geometrical meaning of the central extension of the algebra of diffeomorphisms of the circle?

My 2nd grader son needs to write a speech on why he should be elected as a classroom president. Some of the ideas I suggested are - as a classroom president, he will keep the classroom clean; make sure students respect and behave nicely with each other...

94. ## Mathmatics

I need help. I have no clue about how to solve this problem. Can someone go through it. Find the sope of the tangent line to the graph of the equation y=x^2(x-3) at x=-1 Thanks for the help.

95. ## language

what would be a simplified reason to tell grade ones why there is valentines day? What does it mean? why do people receive cards?

96. ## Algebra 2

1. How many solutions does this system of equations have? y=-2x+6 y=3(x+4) 2. What is the square root of 45? 3. solve 2(x-4)^2=14

98. ## finance

Nucore Company is thinking of purchasing a new candy-wrapping machine at a cost of \$370,000. The machine should save the company approximately \$70,000 in operating costs per year over its estimated useful life of 10 years. The salvage value at the end of