Neil
Popular questions and responses by Neil
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?
asked on April 14, 2014 
Math
Write a rule for the nth term of the geometric sequence. Then find a7. 1. 7, 4.2, 2.52, 1.512, ...
asked on May 23, 2012 
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
asked on August 23, 2011 
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
asked on August 30, 2012 
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
asked on May 3, 2016 
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
asked on December 28, 2013 
Algebra
Simplify the radical. Assume that all variables represent positive real numbers. cube root (120m^20 n^2 / mn^14)
asked on February 21, 2013 
Math
Write an equation of the line that passes through the points (8, 1) and (5, 9).
asked on September 17, 2012 
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
asked on May 23, 2012 
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
asked on February 9, 2011 
Math
Guess my rule Fit the rule AEFHIKLMN Do not fit the rule BCDGJOp
asked on December 13, 2016 
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
asked on October 24, 2014 
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 onehalf its value at zero frequency. ?? Hz Thanks!
asked on March 24, 2014 
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
asked on January 9, 2013 
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
asked on October 16, 2012 
Env. Sci.
Explain how an organism can be dead, yet still considered a biotic factor.
asked on October 9, 2012 
Math
Solving Inconsistent Systems and Dependent Systems 1. 3x  2y= 1 6x + 4y= 2 2. 6y=14  4x 2x= 3x  7
asked on October 4, 2012 
science
if two carbon atoms are joined by a triple bond how many other atoms can each carbon atom bond with
asked on October 1, 2012 
science
if two carbon atoms are joined by a triple bond how many other atoms can each carbon atom bond with
asked on October 1, 2012 
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)
asked on September 11, 2012 
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
asked on May 31, 2012 
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?
asked on September 5, 2011 
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
asked on August 23, 2011 
geometry
A 30lb child is siting at A(2,3) and a 50lb 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
asked on August 23, 2011 
math
how do i get the common denominator for 3 4 5 6 and 7?
asked on July 11, 2011 
SCIENCE
What are the products of a chemical reaction involving NaCl, HNO3, and AgNO3?
asked on March 13, 2011 
chemistry
What are the products of a reaction between NaCl, HNO3, and AgNO3?
asked on March 13, 2011 
geometry
I am trying to find the interior and exterior angles of a 9 sided polygon .
asked on March 12, 2010 
chemistry
2Sb + 3I2>2SbI3 Determine the limiting reactant and theoretical yield when 1.2 mol of Sb and 2.40 mol I2 are mixed.
asked on November 20, 2007 
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
asked on October 15, 2006 
math
what are the possible dimensions of a rectangular prism with a volume of 40 cubic inches
asked on September 12, 2018 
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
asked on May 6, 2018 
Math
If you decrease 300 by 5%, what is the result? A. 15 B. 150 C. 285 D. 315
asked on February 12, 2017 
Chemistry
a+bc (fast) c+d>e (slow) e>f+b (fast) How do you determine the overall equation for these reaction mechanisms?
asked on December 10, 2016 
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
asked on October 11, 2016 
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
asked on November 18, 2015 
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
asked on August 27, 2015 
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?
asked on May 10, 2015 
matrices
Given B = 0 1 0 0 0 1 1 0 0 , show that B^3 = I
asked on May 10, 2015 
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?
asked on July 11, 2014 
Math
g(n) = n^3  5n^2 ; Find g(4n)
asked on January 28, 2014 
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
asked on January 27, 2014 
math
amount of matter in an object
asked on September 29, 2013 
math
Split 597 into three parts such that these are in A.P. and the product of the two smallest parts is 796.
asked on September 28, 2013 
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?
asked on May 28, 2013 
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)
asked on February 20, 2013 
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.
asked on February 18, 2013 
Math For College Readiness
Simplify: (3w  1) / (2w^2 + w  3)  (2  w) / (w  1)  (w) / (1  w)
asked on December 18, 2012 
Math For College Readiness
Simplify: y  3 / y  2  y + 1 / 2y  5 + 4y + 7 / 2y^2  9y + 10
asked on December 17, 2012 
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,
asked on October 16, 2012 
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
asked on October 16, 2012 
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
asked on October 3, 2012 
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
asked on October 3, 2012 
Math
Solve the system by using the substitution method. y= 3/4x  4 x + 2y= 6
asked on October 2, 2012 
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)
asked on October 1, 2012 
Math
Find the function values given f(x)= 6x^2  4. f(0)
asked on September 25, 2012 
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
asked on September 18, 2012 
Math
Determine if (3, 4) is a solution to 5x= 15.
asked on September 10, 2012 
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)).
asked on June 7, 2012 
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)).
asked on June 2, 2012 
Math
Multiply the expressions. Simplify the result. d^2/ ef * 5e^5f/ 4d
asked on May 30, 2012 
Math
Find the sum of the arithmetic series. 20 (Sigma Sign) 2n + 7 x= 1 Formula: Sn= a1 (1  r^n / 1  r)
asked on May 29, 2012 
Math
20 (Sigma Sign) 2n + 7 k= 1
asked on May 29, 2012 
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
asked on May 24, 2012 
Math
Evaluate the logarithm log3 729
asked on May 24, 2012 
English
How is the story "To Build a Fire" by Jack London a good example of Naturalism?
asked on May 23, 2012 
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, ...
asked on May 23, 2012 
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?
asked on March 22, 2012 
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
asked on March 20, 2012 
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
asked on March 18, 2012 
Math
Make a picture of: a model of the earth, a stop sign, a dinner plate and a clock. Which one doesnt belong? Why?
asked on January 10, 2012 
Math
How could you describe a cylinder to someone who has never seen one?
asked on November 3, 2011 
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
asked on October 11, 2011 
math
y*x=30 I need super help please
asked on October 7, 2011 
math
n+9=64 i need help answering this PLEASE
asked on October 7, 2011 
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?
asked on October 5, 2011 
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
asked on October 5, 2011 
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
asked on October 5, 2011 
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?
asked on September 4, 2011 
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), CognitiveBehavioral Therapy (CBT), and
asked on June 28, 2011 
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
asked on June 20, 2011 
statistics
2. A researcher hypothesized that the pulse rates of longdistance athletes differ from those of other athletes. He believed that the runners’ pulses would be slower. He obtained a random sample of 10 longdistance runners. He measured their resting
asked on June 12, 2011 
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
asked on June 3, 2011 
geometry
Prove a triangle is an isosceles triangle ith P(2,3) A(5,7) and T1,4)
asked on April 9, 2011 
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?
asked on January 25, 2011 
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?
asked on October 24, 2010 
Algebra
Solve the system of equations by an algebraic method. Leave answer in exact form. 4x²  7y² = 21 x² + 2y² = 99
asked on September 24, 2010 
10th grade Academic Math
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.
asked on June 7, 2010 
10th grade Academic Math
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.
asked on June 7, 2010 
10th grade Academic Math
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.
asked on June 7, 2010 
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?
asked on May 31, 2010 
math
What is the geometrical meaning of the central extension of the algebra of diffeomorphisms of the circle?
asked on November 1, 2009 
2nd grade
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...
asked on October 21, 2009 
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(x3) at x=1 Thanks for the help.
asked on May 14, 2008 
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?
asked on February 8, 2008 
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(x4)^2=14
asked on January 17, 2008 
Chemistry
What are the names and formula masses of MgSO4,MgSO4.7H20, and (NH4)2SO4. Please help
asked on November 20, 2007 
finance
Nucore Company is thinking of purchasing a new candywrapping 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
asked on September 25, 2007 
finance
Sunshine Corporation is considering several longterm investments. Management wants to accept the two best projects, given the following data: Project A B C D E Present value of net cash inflows . . . . . . . . $24,000 $44,000 $15,000 $30,000 $50,000
asked on September 25, 2007

algebra
Thank you,
posted on December 17, 2019