Saturday
December 20, 2014

Posts by Jordan


Total # Posts: 803

Math
Determine the range of each function a)f(x)=(x^2+3)^2,XER Answer is f(x)ER, f(x)>9 b)f(x)=1/3+x^4,XER Answer is f(x)ER, 0<f(x)<1/3 Please explain how they go those two answers
October 7, 2013

math
A recipe call for 3/4 cups of flour for a batch of cookies. Phillip makes 2 1/2 batchers. How much flour will he use
September 18, 2013

social studies
anybody got anything on number 3?
September 5, 2013

college algebra
how to solve this x^2-14+49=16
August 29, 2013

math
David id "d" years old. In d/5 years, Marco will be twice as old as david is now. What is Marco's age now in terms of d? A. 11d/5 B. 9d/5 C. 4d/5 D. 7d/10 E. 3d/10
August 13, 2013

Physics
Two resistors 10 Ω and 5 Ω are connected in parallel across a 15 V battery. What is the potential difference across the 10 Ω resistor? Answer 5 V 10 V 15 V 20 V I did the work as follows: 1/Req = 1/10 + 1/5. 1/Req = 0.3/1. Req(0.3) = 1(1). Req = 3.33 ohm. Then, ...
July 13, 2013

Physics
Which of the following is correct for the reflected ray if a light ray strikes a plane mirror at an angle of 50° from the normal? a. 40° from the surface of the mirror b. 40° from the normal c. 50° from the surface of the mirror d. 90° from the normal I ...
July 12, 2013

Science
A lorry has a mass of 5640kg and accelerates uniformly from rest to reach a velocity of 100km/h in 10s. Determine the acceleration of the lorry. Determine the force needed to accelerate the lorry
June 21, 2013

Engineering science
A lorry has a mass of 5640kg and accelerates uniformly from rest to reach a velocity of 100km/h in 10s. Determine the acceleration of the lorry. Determine the force needed to accelerate the lorry
June 21, 2013

Chemistry
What about the a? The graph below shows two conductivity curves with respect to temperature of a germanium semiconductor. In one case, there is dopant added to the sample, and in the other there is none. Using some or all of the labels below, please drag and drop the labels to...
June 1, 2013

chemistry
4.35
June 1, 2013

chemistry
pKa+log10(10^2)= 2.35+2= 4.35
May 31, 2013

Math
If a pencil costs 300% more than an eraser and the eraser costs 25 cents, what is the cost of the pencil?
May 24, 2013

math
If I am 25% taller than you, then you must be 75% shorter than me 25% shorter than me 20% shorter than me 75% of my height
May 9, 2013

math
You want to explain to your friend that your bank’s interest rate has gone down from 1.2% to 0.3%. Which sentence below has the correct meaning? A)My interest rate has decreased 25%. B)My interest rate has decreased 0.9 percentage points. C)My interest rate is 0.9% of ...
May 9, 2013

physics
The distance between two planets is 1.6 x 10^6 m. How much time would the light signal take to go from one planet to the other?
May 9, 2013

Calculus help please!
Find the Antiderivative of 3/(3x+5) with steps
May 3, 2013

Calculus
Find the Antiderivative of 3/(3x+5) with steps
May 2, 2013

poetry
What sound devices are used in the poem "How I Learned English" I also need the examples of the sound devices used.
April 17, 2013

university of phoenix
bond that has a$1000 par value and a contract interest rate of 10.1%.The bonds have a current market value of $1,120and will mature in 10 years.The firms marginal tax rate is 34%
April 16, 2013

Chemistry
What are ways in which pka values for weak acids can be experimentally determined?
March 30, 2013

Chemistry
What are some equilibrium expressions that chemists use for weak acid equilibrium?
March 30, 2013

Chemistry
What are some equilibrium expressions that chemists use for weak acid equilibrium?
March 30, 2013

Physics
The load-bearing piston in a certain hydraulic system has an area 35 times as large as the input piston. If the larger piston supports a load of 9000 N, how large a force must be applied to the input piston?
March 30, 2013

Math
if 4/3 x 3/4 =5k whats k
March 28, 2013

math
8 c
March 27, 2013

Math
If you are riding a bike and your front sprocket (the one with the pedals) has 40 teeth and the rear sprocket (the one connected to your back tire) has 20 teeth, and you are pedaling at a rate of 50 rpm, how fast are you going if your bike has 27 inch diameter wheels?
March 22, 2013

math
If two rectangles have 16 inches what are two possible areas for each rectangle
March 19, 2013

Chemistry - URGENT
I had to type it in word and it formatted fine even when i emailed it to myself. So how do you calculate the rate constant?
March 16, 2013

Chemistry - URGENT
For 1 I got m is .282 and for 2 I got n is .53
March 16, 2013

Chemistry - URGENT
I figured out 1 and 2 but i dont understand how to do the rest
March 16, 2013

Chemistry - URGENT
So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions:   Lab Temp 0.2°C   Experiment Trial Time in seconds Trial 1 Trial 2 Average Time   1 1 2 ...
March 16, 2013

Chemistry - reaction kinetics
So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions:   Lab Temp 0.2°C   Experiment Trial Time in seconds Trial 1 Trial 2 Average Time   1 1 2 ...
March 16, 2013

Chemistry
So, I go to high school in Texas and we have this AP Chem lab due online tomorrow night by midnight and I need some serious help on these questions:  Lab Temp 0.2°C  Experiment Trial Time in seconds Trial 1 Trial 2 Average Time  1 1 2 256 275 268  ...
March 16, 2013

Chemistry AP
It was determined that a 0.10 M solution of an acid was only 2.5% ionkzed. Find the Ka and pKa for the acid.
March 16, 2013

Chemistry
2A(aq)-> B(aq) +C(aq) Initial concentration of A and B is 1.00 M, with no C. Kc = 0.200 find equilibrium concentrations
March 15, 2013

physics
wonder waves in shallow yellow dA.isc are 6.0 cm long. at one point, the water oscillates up and down at a rate of 4.8 of oscillations per second. A. what is the speed of the water waves? B. what is the period Of water waves?
March 12, 2013

physics
wonder waves in shallow yellow disc are 6.0 cm long. at one point, the water oscillates up and down at a rate of 4.8 of oscillations per second
March 12, 2013

algebra
√5 ____ √45 How do you simplify this. Do you multiply the top and bottom by the square root of 45
March 7, 2013

4th grade Algebra
Evaluate each expression when n = 75 12n 36n is that multiplication?
March 7, 2013

Business Math
If Wilma borrows $5,000 from her brother (at 5% interest per year) and the loan matures in 10 years, how much will she have to pay annually to pay the loan off in 10 years? How much will she have to pay annually to pay the loan off in four years?
February 17, 2013

Maths
The ratio John's age to Ryan's age is 3:1 now . 25 years later , the ratio will become 4:3 .How old is John now ?
February 15, 2013

Maths
The ratio John's age to Ryan's age is 3:1 now . 25 years later , the ratio will become 4:3 .How old is John now ?
February 15, 2013

Math
A dining room floor has an area of 52 yards. Alice wants to cover 3/4 of the floor with carpet. How many 4 square yards of carpet does she need?
February 13, 2013

Physics
Suppose that the gravitational acceleration on a certain planet is only 3.1 m/s2. A space explorer standing on this planet throws a ball straight upward with an initial velocity of 25 m/s. (a) What is the velocity of the ball 4 seconds after it is thrown? m/s (b) How much time...
February 13, 2013

Math I need help Please help me!!!!!!
The answer is- D. About 349 feet per hour
January 30, 2013

Information Literacy
Which of the following sets of Library of Congress call numbers is in the correct order? A. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L166 1995, E88 G62 L45 B. E88 G62 L166 1995, E88 G62 L45, E88 G62 D225, E88 G2512 S57 1998 C. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L45, ...
January 12, 2013

Chemistry
b= 8.8279*10^-20 in joules
January 12, 2013

Chemistry
It still wrong answer.
January 11, 2013

Anthropology
The difference between a state and a cheifdom is?
December 9, 2012

math
you borrow $1200 from a bank that bank charges 9.5% simple annual interest. after 15 months you pay back the loan. how much interest do you pay on the loan? what is the total amount that you pay the bank.
December 6, 2012

Physics
A boy is standing on a skateboard holding two 5.0 kg bowling balls. Initially they are moving to the left at a speed of 3.0 m/s. At one point the boy throws one ball to the right at 4.0 m/s causing his speed to increase. Before he can slow down, he throws the second ball to ...
November 29, 2012

physics
A long thin rod is cut into two pieces, one being as long as the other. To the midpoint of piece A, piece B is attached perpendicularly, in order to form the inverted "T" shown in the figure. The application of a net external torque causes this object to rotate about...
October 27, 2012

math
The LCM of these three numbers is 60. The GCF is 1. If you add the numbers, the sum is 15. Select the three numbers from the following options: 2, 6, 5, 8, 4 Show your work!
October 17, 2012

Physics
A pendulum 1.70m long is released (from rest) at an angle 30 degrees. 1. Determine the speed(m/s) of the 60.0g bob at Theta = 15. 2. Determine the tension in the cord at the lowest point Theta = 0. 3. Determine the tension in the cord at Theta = 15. A formula would be ...
October 17, 2012

CHM
Calculate the percent ionization of hydrazoic acid (HN3) in solutions of each of the following concentrations A) 0.377 M B) 0.107 M C) 4.16*10^-2 M Ka= 1.9*10^-5
October 8, 2012

Calc
Whats the derivative of 2x^2*tan(X)/sec(x) ?
October 4, 2012

physics
Suppose runner A starts at the 0 degree mark on a circular track (circumference = 400m). And let runner B start at the 180 degree mark. If runner A starts running counter clockwise with acceleration 2m/s^2, and runner B runs clockwise with constant speed of 7 m/s, at what ...
October 2, 2012

math
there are 5 people.Each person has 1 hat.How many are in all.4
October 1, 2012

Algebra 1
xWrite the equation so that y is a function of x. -9x + 3y =18
September 30, 2012

Math
The formula s = the square root of 18d can be used to fnd the speed s of a car in miles per hour when the car needs d feet to come to a complete stop after slamming on the brakes. If it took a car 12 feet to come to a complete stop after slamming on the brakes, estimate the ...
September 27, 2012

CHEM HELP ASAP!
As a solid, Ag adopts a face-centered cubic unit cell. How many unit cells are present per cubic centimeter of Ag?
September 27, 2012

5th grade math
The moon is about 240.000 miles from Earth. What is this distance written as a whole number multiplied by the power of ten?
September 13, 2012

5th grade math
What missing number makes the number sentence, 28.02=20+8=?, true?
September 11, 2012

language
Circle the simple subject and underline the simple predicate. The smell of cooking is delicious to the hungry campers.
September 11, 2012

CHEM HELP ASAP!!
Two 20.0-g ice cubes at –10.0 °C are placed into 275 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts. heat capacity h2o (S)=37.7 j/mol*k heat capacity h2o (l...
September 11, 2012

CHEM HELP ASAP!
Calculate the heat energy released when 29.7 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for mercury at 1 atm: Heat capacity of Hg (l) 28.0 J/Mol*K, Melting pt 234.32 k, and enthalpy of fusion 2.29 kg/mol
September 11, 2012

DrBobb222!! Help!!
Please look at my Chemistry problems again, I reposted them with the constants and such. I am still confused!
September 11, 2012

Chemistry
DrBob222, HELP! Calculate the heat energy released when 29.7 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for mercury at 1 atm: Heat capacity of Hg (l) 28.0 J/Mol*K, Melting pt 234.32 k, and enthalpy of fusion 2.29 kg/mol
September 11, 2012

Chemistry
DrBob222,HELP! Two 20.0-g ice cubes at –10.0 °C are placed into 275 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts. heat capacity h2o (S)=37.7 j/mol*k heat ...
September 11, 2012

Chemistry
Two - 20.0 g ice cubes @ -20 degrees C are placedinto275 g of water @ 25 degrees C. Assuming no energy is transfered to or from the surroundings caculate the final temperature of the water after the ice melts.
September 10, 2012

Chemistry
Calculate the heat energy release when 29.7 g of liquid mercury @ 25.00 degrees C is converted to solid merury at its melting point.
September 10, 2012

Math
Find the unknown digit to make the sentence true 2.48>2.4__ 1>2.463 5.723<5.72__ <5.725 7.64<7.___ 5<7.68
September 10, 2012

chemistry
What volume of 2.50 x 10-4 M CV+ solution should be diluted to 10.0 mL to prepare a 7.50 x 10-5 M CV+ solution
September 3, 2012

Science
a .5kg ball is dropped from a 30m high building is on the ground for 2ms then bounces up 20m. What avg force was exerted on the ball?
August 23, 2012

Physics
A .5kg ball is dropped from a 30m high building is on the ground for 2ms then bounces up 20m. What avg force was exerted on the ball?
August 23, 2012

7th grade pre algerbra
18 necklaces
August 8, 2012

MAth!
In the list of five measurements shown below, one is blurred. Supply a fifth value that would make the median 8. 8 5 10 3 #
July 28, 2012

Math-one more
The average length of time, per week, that students at a certain university spend on homework is normally distributed with a mean of 24.3 hours and a standard deviation of 1.4 hours. Jane tells her parents she spends more time studying than 75% of the students on campus. How ...
July 28, 2012

Math
In the list of five measurements shown below, one is blurred. What must this value be, if the mean of the five measurements is 7? 8 5 10 3 #
July 28, 2012

English help
1c 2? 3b 4c 5c 6d 21a 22c 23d 24b 25c
July 25, 2012

English help
Question 1 Marks: 1 Davey has decided to research the history of fire engines in America. To get started he's written a list of research questions. Which of the following questions is the best research question for him to ask? a. Who holds the patent for the fire engine? b...
July 25, 2012

English help
1 Which of the following is NOT part of the process of synthesizing? a. finding main ideas b. finding supporting details c. determining a purpose d. comparing and contrasting ideas is it c?
July 25, 2012

English help
11a 12c 13b 14a c d e 15a c g 16b c d 17d 18c 19e 20c 21d 22a 23b 24a 25b
July 25, 2012

English help
1a 2d 3a 4c 5d 6a how about now?
July 25, 2012

English help
Are these right? 1.c 2.b 3.d 4.a 5.c 6.c 7.a 8.b 9.d 10.c 11.a 12.d 13.b 14.d 15.a 16.c 17.b 18.a 19.d 20.a 21.c 22.d 23.a 24.b 25.c
July 25, 2012

English help
Question 1 Marks: 1 A common theme that runs through all the sections of Song of Myself is Whitman's own — Choose one answer. a. belief in his power as a poet b. love of solitude c. inability to trust people d. failure to change the world Question 2 Marks: 1 Free ...
July 25, 2012

elem math core
An unknown number of slips of paper, each with the letter C written on them, are added to the bag. After this, it is known that P(A)=¼ and P(B)= ¹/6. Find P(C).
July 11, 2012

elem math core
A bag contains one each of red, blue, green, yellow and white marbles. Give the sample space for the following experiments. A) one marble is drawn at random B) one marble is drawn, but not replaced,and then a second marble is drawn.
July 11, 2012

Statistics and Probability
I had a problem similar to this that we did in my math class. Our teacher said that you take the # of outcomes over the total amount to get the ratio so for the blue beads it would be 6/9 or in other words the ratio would be 6:9. For the gold it would be 3 :9 because there are...
July 11, 2012

goverment
Choices- -legislative branch -House of Representatives -Supreme Court -executive branch
June 13, 2012

statistics
Bob scores 610 on his SAT's. If the mean score is 580 and the standard deviation is 115, what percentile is Bob's SAT score?
May 21, 2012

Chemistry
how many grams of aluminum sulfate are produced if 23.33 g Al reacts with 74.44 G CuSO4
May 21, 2012

geometry
Two triangles each have adjacent sides of length 120 feet and 180 feet. The first triangle has an angle between the two sides of 40 degrees, while the second triangle has an angle between the two sides of 60 degrees. What is the approximate difference between the areas of the ...
May 2, 2012

economics
4. Engineers for the Off Road Skateboard Company have determined that a 10% increase in all inputs will cause output to increase by 5%. Assuming that input prices remain constant, you correctly deduce that such a change will cause ________ as output increases. A) total cost to...
May 1, 2012

Physics
A copper pipe with an outer radius of 0.011 m runs from an outdoor wall faucet into the interior of a house. The temperature of the faucet is 4.4° C and the temperature of the pipe, at 3.1 m from the faucet, is 24° C. In fourteen minutes, the pipe conducts a total of ...
April 26, 2012

Math
6 3/5+1 3/5=8 1/5 +
April 23, 2012

Physical Science
A hockey puck moving at 28 m/s is caught by an 80.00 kg man who was at rest. The man and puck move together after the collision. The puck's mass is 0.16 kg. What is the final velocity?
April 12, 2012

math
Find the dimensions of a rectangle with perimeter 40 with the largest area. (hint: Find an equation for area and one for perimeter, use both to find perimeter in terms of one variable)
March 20, 2012

CALCULUS WXMAXIMA !!PLEASE!
thank you so muchh!
March 7, 2012

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