Tuesday
September 2, 2014

Posts by jeff


Total # Posts: 573

math
use only the 6,+,-,x,divided,and = keys on a calculator to get the display to say 7. you can use these keys as many or as few times as you need,but you can't use any other keys. Record your way
September 1, 2014

math
10, 15, 25 what is the range ?
August 27, 2014

physics
You are at a archeological dig an discover a strange artifact. It is a utinsil tha appears to be carved out of an elephant's tusk You analyze it and discover that it has 0.625 the amount of carbon -14 you woul find in a living specimen. How many half lives has the specimen...
August 24, 2014

Physics
Charge A has a charge of +2 C. Charge B has a charge of - 3 C and is located 1 meter to the right of A. Charge C is located 1 m to the right of charge Band has a charge of -1C. If a fourth charge (Charge D) is placed 4 m to the right of Charge B, How much charge must it ...
August 23, 2014

statistics
The number of vacation days taken by employees of a company is normally distributed with a mean of 14 days and a standard deviation of 3 days. For the next employee, what is the probability that the number of days of vacation taken is less than 10 days? More than 21 days?
August 17, 2014

programing
The Human Resources Department of Apex Manufacturing Company wants a report that shows its employees the benefits of saving for retirement. Produce a report that shows 12 predicted retirement account values for each employee—the values if the employee saves 5, 10, or 15 ...
August 5, 2014

Finance
The Fridge-Air Company's preferred stock pays a dividend of $4.50 per annually. If the required rate of return on comparable quality stocks is 14 percent, calculate the value of Fridge-Air's preferred stock.
August 5, 2014

math
if a ticket for a game was 60.00. than later the price was increased by 2/5 what is the final cost of the ticket?
July 2, 2014

C# programming
how to write c# program that will calculate for the average of positive integer inputs from 0 to n. Also determine the number of input for numbers that are greater than 10, 30, 50, 70, and 90.
July 2, 2014

Math
state whether each relation y=f(x) describes a quadratic function or not y=3-x^2
June 18, 2014

Math
state whether each relation y=f(x) describes a quadratic function or not
June 18, 2014

writing
in the topic sentence exercising three days a week will provide good physical health,what is the topic statement and what is the controlling sentence?
June 9, 2014

Chem
Calculate ΔG∘ at 298 K for the following reactions. A) Ca(s)+CO2(g)+12O2(g)→CaCO3(s) B) 2KClO3(s)→2KCl(s)+3O2(g) C) CO(g)+H2O(g)→H2(g)+CO2(g)
May 14, 2014

programming
3. Create the logic for a program that accepts input values for the projected cost of a vacation and the number of months until vacation. Pass both values to a method that displays the amount you must save per month to achieve your goal.
May 13, 2014

Chemistry
Consider the following reaction at constant P. Use the information here to determine the value of ΔSsurr at 398 K. Predict whether or not this reaction will be spontaneous at this temperature. 4 NH3(g) + 3 O2(g) → 2 N2(g) + 6 H2O(g); ΔH = -1267 kJ A)ΔSsurr...
May 5, 2014

physics
Your vertical spring accelerometer has a 40 g mass hanging from it. You climb aboard the roller coaster that starts at rest and watch the accelerometer read 0.45 for 5 seconds while descending the first peak and then change to 2.8 for 2.5 seconds while going through the bottom...
April 28, 2014

math
A movie theater ticket booth opens at 10 am. There are four tellers who divide the customers evenly. The tellers have served 16 customers so far this morning. which expression represents the unknown number of customers each teller will serve? Let c represent the additional ...
April 22, 2014

Trig
A vertical tower is on a 12° slope. from a 50 m down the hill, the angle of elevation of the top of the tower is 30°. find the height of the tower
April 15, 2014

math
Sara drives 72 miles on 3.2 gallons of gas. She uses this information to calculate how many miles per gallon she can drive. Using this result, how many miles can Sara drive on 13.3 gallons of gas?
April 9, 2014

CHEMISTRY
HOW MANYMOLES OF SULFUR DIOXIDE CAN BE PRODUCED FROM 20.0G OF HYDROGEN SULFIDE?
March 27, 2014

science
A ramp 20m long slopes down 1.2m to the edge of a lake. A force of 300N is needed to pull a boat on a trailer at constant speed up the ramp when they are clear of the water. If friction is negligible, what is the combined mass of the boat and trailer. Hints: Calculate MA of ...
February 16, 2014

Statistics
The mean of a distribution of 1000 individuals' blood pressure is 85. If this number were translated into a Z score it would be equal to +1 standard deviations. True or False? I know to calculate a Z score the formula is Z= (X-sub-i minus the mean)/ standard deviation. the...
February 11, 2014

Physics
Police find skid marks 60 m long on a road showing where a car made an emergency stop. Assuming that the deceleration was -10m/s2, how fast was the car going?
February 9, 2014

Math
What is the solution to the inequality below? 12x > 6(x - 2)
January 15, 2014

Pre-Calculus
Find an equation of the line that satisfies the given conditions Through (-2,4); slope -1 How would you solve that by using the point slope form and writing it in the general equation of a line? ax +by + c =0
January 11, 2014

Pre-Calculus
Find an equation of the line that satisfies the given conditions Through (-2,4); slope -1
January 11, 2014

math
Can someone check my answers: write out each problem with repeated addition. 3*0= 0*13= 20*0= I got 0+0+0 0+0+0+0+0+0+0+0+0+0+0+0+0 0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0+0
January 8, 2014

3-D Coordinates Polar coordinates Precalculus Trig
Sorry, never mind. I figured it out.
December 18, 2013

3-D Coordinates Polar coordinates Precalculus Trig
Hi. I don't understand why you multiply by 50*pi/180. The 50 degrees is the difference in the longitude, but why isn't that divided by 360? Why the pi/180? If someone could clear that up I would appreciate it.
December 18, 2013

Reading Skills
Hello Sue, the answer is a simile. Please read the following: Each of these he set adrift like a paper boat on a shifting sea of daydreams. He did that encased in the drone and shudder of diesel pistons and hissing tires. Jamie Sabin was going home to a place unknown. With ...
December 17, 2013

Reading Skills
The answer to this question IS NOT "B". What is the answer to the following question. Inside the bus, in his summer Class-A uniform with its brass glitter and infantry-blue shoulder cordon, Jamie Sabin was going home. Fort Benning would be a fading dream; Preston, ...
December 17, 2013

Reading Skills
Inside the bus, in his summer Class-A uniform with its brass glitter and infantry-blue shoulder cordon, Jamie Sabin was going home. Fort Benning would be a fading dream; Preston, Virginia, a place unknown, his future. He was in between, fumbling with puzzle pieces, making up ...
December 17, 2013

Reading Skills
In American society, romantic love is considered the main reason for people to marry. On the other hand, in some societies, romantic love is considered a form of obsession or madness. In fact, even in many societies where "true love" is not considered a form of ...
December 16, 2013

science
2. According to your text, the groundwater aquifers of India have been severely over pumped. (Points : 1)
December 15, 2013

Math #2
Can you show me the work to get these answers also? 2.Use the function, f(x)=3x^2-16x+5/(3x-1)(x+4)^2: a. Find the domain of f(x) in interval notation b. Factor and simplify f(x) completely. c. Find the x-intercept(s), if any. d. Find the y-intercept, if any. e. Determine the ...
December 8, 2013

Math #2
Can you show me the work to get these answers also? 1.Given g(x)=x^3+5x^2+6x+30,find: a. All real/complex zeros. b. All x-intercept(s),if any.
December 8, 2013

Math
Can you show me the work to get these answers also? A.Solve each equation. Leave exact answers: 1.5^3x-2=14 2.log(x-1)-logx=log(x-3) B.If f(x)=x+2/x and g(x)=7/x-5, a. Find the composition (f o g)(x) and simplify completely. b. Find the domain of (f o g)(x).Write answer in ...
December 8, 2013

Classical Mechanics - Need Help Please
You beauty, Thanks bw. All I have left is the falling ruler if you have any advice for that one. Otherwise thanks a million!
December 8, 2013

Classical Mechanics - Need Help Please
bw, For the above question (the block of mass 3kg one) I am still getting the incorrect answer for your answer of c.) 44.99 Is it possible this is incorrect still?
December 8, 2013

Classical Mechanics - Need Help Please
A block of mass m= 3 kg is initially at rest on a horizontal surface. At time t=0, we begin pushing on it with a horizontal force that varies with time as F(t)=βt2, where β= 1.2 N/s2. We stop pushing at time t1=5 s [F(t)=0 for t>t1]. (a) First, assume the surface ...
December 8, 2013

Classical Mechanics Physics - Urgent help please
Hey Damon, Part b and c: (b) What is the force exerted by the wall on the ruler when it is at an angle θ=30∘? Express your answer as the x component Fx and the y component Fy (in Newton) Fx= Fy= (c) At what angle θ0 will the falling ruler lose contact with the ...
December 7, 2013

Math
4x-3y=5 Solve { 5y+7=3x using the method of elimination.
November 27, 2013

Math
Determine the equation of g(x) that results from translating the function f(x) = x2 + 3 upward 14 units. g(x) = (x + 17)2 g(x) = (x + 14)2 + 3 g(x) = x2 - 11 g(x) = x2 + 17
November 24, 2013

Finance
I got 68016.92
November 8, 2013

Math
It's a NUMBER? It is divisible by 3 but not by 9 or 15. It is not an even number and it is less than 90. The sum of it is 12 and it could be the Product of 27..... What NUMBER??
November 7, 2013

Science
What is a substance that cannot be separated into simpler substances by physical or mechanical methods such as filtering, boiling, or sifting?
October 25, 2013

physics
(a) What is the escape speed on a spherical asteroid whose radius is 435 km and whose gravitational acceleration at the surface is 0.632 m/s2? (b) How far (in km) from the surface will a particle go if it leaves the asteroid's surface with a radial speed of 535 m/s? (c) ...
October 4, 2013

physics
(a) What is the escape speed on a spherical asteroid whose radius is 435 km and whose gravitational acceleration at the surface is 0.632 m/s2? (b) How far (in km) from the surface will a particle go if it leaves the asteroid's surface with a radial speed of 535 m/s? (c) ...
October 4, 2013

Science
What is a substance that cannot be separated into simpler substances by physical or mechanical methods such as filtering, boiling, or sifting?
October 3, 2013

MircoEcon
Agree or disagree with this statements and explain: If the demand for a good has unitary elasticity, or elasticity is -1, it is always true that an increase in its price will lead to more revenues for sellers taken as a whole.
September 30, 2013

trigonometry
the bases of a trapezoid are 22 and 12 respectively. The angles at the extremities of one base are 65^ and 40^ respectively. Find the two legs
September 1, 2013

Math
If a car is traveling at 60 mph how long would it take to slow to 30 if slammed on the brakes?
September 1, 2013

statistics
Archie must travel to a foreign country where a deadly strain of flu has ravaged the population. Already, 34% of the population has succumbed to the flu and died. There is a vaccine, but because the flu is extremely contagious, it spreads quite rapidly, and to date only 1 out ...
August 2, 2013

bus 123
Carol Miller went to Europe and forgot to pay her $850 mortgage payment on her New Hampshire ski house. For her 55 days overdue on her payment, the bank charged her a penalty of $26. (assume 360 days). What was the rate of interest charged by the bank?
August 1, 2013

Science
For example HNO2 + H20 ----> H30+ NO2- I don't understand how the hydronium ions form. How do I figure out if a OH- or H30+ will form from the reactant side.
July 30, 2013

stats
Cheating is not allowed. HRP258
July 16, 2013

math
a 5000lb. truck traveling at 30 miles per hr. hits a herd of horses bring the truck to a dead stop what is the force of impact?
July 7, 2013

calculus
In 1970, the total enrollment in public universities and colleges in a country was 5.1 million students. By 2004, enrollment had risen to 14.3 million students. Assume enrollment can be modeled by exponential growth. (a) Estimate the total enrollments in 1980, 1990, and 2000...
May 16, 2013

calculus
In 1970, the total enrollment in public universities and colleges in a country was 5.1 million students. By 2004, enrollment had risen to 14.3 million students. Assume enrollment can be modeled by exponential growth. (a) Estimate the total enrollments in 1980, 1990, and 2000...
May 16, 2013

calculus
please help me Asap In 1970, the total enrollment in public universities and colleges in a country was 5.1 million students. By 2004, enrollment had risen to 14.3 million students. Assume enrollment can be modeled by exponential growth. (a) Estimate the total enrollments in ...
May 16, 2013

Finance
Calculate the future value of $5000 given that it will be held in the bank for 6 years and arn an annual interest rate of 7%.
May 8, 2013

math
first one answer: x^2+3x+2
May 6, 2013

geometry
What are the internal angles required to make a pentagon with 36 millimetre sides?
May 5, 2013

geometry
What are degrees of angles for pentagon with 36 sides
May 5, 2013

physical aspects
A 600 lb. oak packing crate is sitting on a cross grained, 14 ft long, oak ramp. The force of the box against the ramp is 520 lbs, and the downhill force on the box is 300 lbs. Will the box slide down the hill all by itself? Give the box a nudge, will it stop? If the box will ...
May 5, 2013

Physics
The cannonball is fired at a speed of 45 and an angle of 35 . A cannonball that was accidentally dropped from the top of the castle wall hit the moat below in 1.8 .
April 20, 2013

Chemistry
calculate the minimum number of grams of C3H8(g) that must be combusted to provide the energy necessary to convert 3.36 kg of H2O from its solid form at -10.0°C to its liquid form at 80.0°C
April 15, 2013

Chemistry
3.00 g of H2 reacts with 200.0 g of AgCl. what is the yield?
April 15, 2013

LA
so its C
April 10, 2013

LA
can you give me the right answer please
April 10, 2013

LA
What was the Supreme Court's ruling on the Dred Scott case? Dred Scott should be considered free since he had lived in many states where slavery was banned. Dred Scott could be free if he paid a fee. Dred Scott was still a slave and not a citizen. The case never reached ...
April 10, 2013

Chemistry
What mass of silver can be produced by reacting 0.300 L of 0.100 M AgNO3 with an excess of Mg?
April 9, 2013

LA
thanks
April 8, 2013

LA
What do you learn from the dialogue between Mr. Frank and Miep at the beginning of Scene 1? A;Miep wants to show Mr. Frank something in the building. B;Mr. Frank wants to live in this building to hold on to his memories. C;The war has ended, but Mr. Frank does not want to ...
April 8, 2013

chemistry
Sodium fluoride and lead nitrate are both soluble in water. If 1.13 g of NaF and 0.232 g of Pb(NO3)2 are dissolved in sufficient water to make 1.00 L of solution, will a precipitate form? How do you know if there should be a precipitate or not? What is the chemical formula for...
April 7, 2013

science need help
2 H2 + O2 = 2H2O 2 grams + 32 grams=_ _ _ _ _grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogeb that reacts. in your response be sure to: include they type of change illustrated in the balanced eqaution explain the conservation ...
April 1, 2013

science need help
2 H2 + O2 -> 2 H2O 2 grams + 32 grams -> _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of matter and ...
April 1, 2013

science
2 H2 + O2 -> 2 H2O 2 grams + 32 grams -> _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of matter and ...
March 31, 2013

science
2 H2 + O2 -> 2 H2O 2 grams + 32 grams -> _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of matter and ...
March 31, 2013

science
2 H2 + O2 -> 2 H2O 2 grams + 32 grams -> _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of matter and ...
March 31, 2013

science
2 H2 + O2 -> 2 H2O 2 grams + 32 grams -> _ _ _ _ _ grams how would the mass of water formed in the reaction compare to the mass of oxygen and hydrogen that reacts? include types of change illustrated in the balanced equation. explain the conversation of matter and ...
March 31, 2013

science
when 1 gram of water evaporated the volume of the water vapor increases but the mass remains constant. why does the water remain constant i think because the number of atoms remain constant
March 31, 2013

science
why the tilt of axis causes summer to be warmer than winter in the northern hemisphere i put because the rays of the sun strike the northern hemisphere more directly in the summer. but it could also be because northern hemisphere is closer to the sun in the summer.
March 31, 2013

Chemistry
Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after the following volumes of HNO3 have been added. a)0.0 mL b)20.0 mL c)25.0 mL d)40.0 mL e)50.0 mL f)100.0 mL
March 23, 2013

English
What is Positive Adverbs
March 22, 2013

math
Combine the like terms (6a^4b - 6a^4b) + (ab^3 + 3ab^3) = 0a^4b + 4ab^3 = 4ab^3
March 16, 2013

spanish
what does ella mean
March 11, 2013

physics
A 36 cm long copper wire carries a current of 6.0 A and weighs 0.45 N. A certain magnetic field is strong enough to balance the force of gravity on the wire. What is the strength of the magnetic field?
March 10, 2013

physics
A wire that is 70 cm long, carrying a current of 6.5 A, is at right angles to a uniform magnetic field. The magnitude of the force acting on the wire is 0.60 N. What is the strength of the magnetic field?
March 10, 2013

physics
A wire that is 0.45 m long and carrying a current of 9.5 A is at right angles to a 0.40 T magnetic field. How strong is the force that acts on the wire?
March 10, 2013

physics
The force acting on a wire that is at right angles to a(n) 0.80 T magnetic field is 2.1 N. The current in the wire is 6.7 A. How long is the wire?
March 10, 2013

physics
A wire that is 630 m long is perpendicular to a 0.31 T magnetic field. A 1.8 N force acts on the wire. What current is in the wire?
March 10, 2013

physics
A wire that is 46 cm long is parallel to a 0.54 T uniform magnetic field. The current through the wire is 4.5 A. What force acts on the wire?
March 10, 2013

math
Solve equation for Y 2x + 8y = 6 8y = 6 - 2x y = 3/4 - x/4 Since this is a straight line, we can pick any value for X. Let's say X=2 Then y(2) = 3/4 - 2/4 = 1/4 Now, decrease x by 2, so x=0 y(0) = 3/4 - 0/4 = 3/4 The difference between Y(0) and Y(2) is 3/4 - 1/4 = 2/4 = 1/...
February 26, 2013

MATH
Change 1.9 hours into a form we can use. Let's break it into two parts. We know 1 hour is easy enough, and that will change the time to 4:05 PM (Subtract 1 hour from 5:05 PM). For the 0.9 hour part, let's change this to minutes. (0.9 hours)*(60 min / 1 hr) = 54 minutes...
February 26, 2013

geometry
Keep in mind it does not have to be in ratio of 3:4:5 to be a right triangle, it has to make the equation c^2=a^2+b^2 true. Another common right triangle is 5,12,13.
February 26, 2013

geometry
No...Use c^2=a^2+b^2. Use a= 24, b= 32 and c= 42 (the longest side). Take a^2 + b^2 and see if it eqauls c^2 If it does, it is a right angle. If it does not, it is not a right triange. In this case, it does not, so it is not a right triangle.
February 26, 2013

Algebra
2X + 1 r 2/(x-3)
February 25, 2013

Algebra II
1. Multiply out z^2 + 6z + 14z^2 + 84z + 45 = 0 2. Combine like terms 15z^2 + 90z + 45 = 0 3. Use quadratic equation to get both answers for z.
February 24, 2013

chemistry
A solution is prepared by mixing 50.7 mL of 0.28 M Pb(NO3)2 with 70.8 mL of 1.0 M KCl. Calculate the concentrations of Pb2+ and Cl - at equilibrium. Ksp for PbCl2(s) is 1.6 10-5.
February 21, 2013

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