Friday
April 18, 2014

Posts by David


Total # Posts: 1,595

algebra
arrange the terms in descending order (can any one give an example) 5-4x2+x3-6x

math
Thanks

math
Add the trinomials x + y - 2 and x - y + 4

math
can you give an example

math
arrange the terms in descending order. 5 - 4x2 + x3 - 6x

L0velyLayna
I'm in 8th all so can you reword it.

Chemistry
please help i really need the help

Chemistry
!00.0 grams of Na2SO4 reacts with 150.00 grams of Ba(NO3)2to form NaNO3 and BaSO4. How many grams of barium sulfate will form?

math ( polynomial )
How did you get the answer. For I can work it out.

math ( polynomial )
Identify each polynomial below as a monomial, bnomial, or trinomial and name the degree x2 - 25 x2 - 6x + 7 2x + 3y - 4

math
Thank you guys this really helps

math
sorry meant 8ft

math
tony cut 2 ft 7 1/2 in. length from 8 in long board. what is the remaining length of the board.

Geometry
Answer= (1,3)

Geometry
(1,3)

Algebra
oops, I made a mistake. There are 435 tiles!!!!

Algebra
The floor of a dance studio is covered with 615 tiles. The owner of the studio replaced the tiles last year. The tiles cost $15 for a set of 8 and $2 for each additional tile. What is the monthly increase the owner charged each of her 34 students over a 6-month period to cover...

Algebra
There are 435 tiles, not 615. Sorry.

Vocabulary
I need help with writing sentences using my vocabularywords

Chemistry
Q1: You wish to prepare a buffer solution with pH = 11.10. What volume of 6.0 M HCl would you add to 500 mL of 0.10 M (C2H5)2NH to prepare the buffer? You may assume that the solution’s volume remains constant. Q2: What is the resulting pH when 20 mL of 0.20 M NaOH is add...

Physics
A simple pendulum in a certain planet is found to vibrate 50 times in 100s. Find its (a) period, (b) its frequency. (c) When 1.5m of its length is cut, it vibrates 50 times in 50 s. Find the original length of the pendulum. thanks in advance

Math
the length of a rectangular garden exceeds its width by 8 feet. if each side of the garden is increased by 2 feet, the area of the garden will be increased by 60 square feet. find the dimensions of the original garden

Applied maths
Evaluate in the domain of complex variables. a) [3(cos⁡〖55°〗+j sin⁡〖55°〗 )]^2 b) (5.0/15°)^3 c) (52/42°)^(1/2) d) ∜4

Applied maths
When a capacitor , charged to a voltage , is discharged through a resistor , the current will decay exponentially according to the following equation: i=E/R e^(-t/RC) If E=250 V,C=160 μF and R=2100 Ω, answer the following questions: a) What is the maximum current in...

Applied maths
2. When light passes through a transparent medium, its intensity I at a depth d can be modelled using the equation where I0 is the initial intensity, and k is a constant. If the intensity of sunlight is reduced to 54% of its original value after penetrating through a depth of...

Aplied maths
1. A steel plate initially at 21.2°C is placed in a furnace at 785°C for 58.0 minutes. While in the furnace the temperature of the plate increases at a rate of 4.18% per minute. After 58.0 minutes, the plate is removed from the furnace and placed on a concrete slab to ...

Trignometry
A car is moving at a rate of 55 mph and the diameter of its wheels is 2 feet. A) Find the number of revolutions per minute the wheels are rotating. B) Find the angular speed of the wheels in radians per minutes.

Chemistry
If I titrate a sample containing Ammonium Sulphide with a 0.05m Cadmium chloride until an end point is reached, how do I calculate the % sulphide in the sample

Physics
An ideal refrigerator-freezer operates with a COP = 8.0 in a 28°C room. What is the temperature inside the freezer?

Chem ap
What is the concentration of cations of a 2 molar CoCl3 solution?

math
8 students share 5 yds of ribbon equally, what fraction does each student get?

Math
A box with a height of 2 centimeters has a volume of 24 cubic centimeters. The length is three times longer that its width. What is the length of the box?

Math
Ms. Quon discovered that 40 students liked soccer, 20 liked basketball, 10 liked football, and 5 liked swimming. How many times as many students liked basketball as football? Soccer as football?

Chemistry
yes it isa question

Chemistry
a sample of silver chromate has a mass of 78.6 grams?

Physics
The speed of the head of a redheaded woodpecker reaches 3.4 m/s before impact with the tree. The mass of the head is 0.060 kg and the average force on the head during impact is 5.0 N. a)Find the acceleration of the head (assuming constant acceleration) (b) Find the depth of pe...

Chemistry
Calculate the molality of HCl in an aqueous 12M HCl solution that has a density of 1.20g/mL

programming logic
The Banking e-Teller system allows bank customers to perform ATM transactions from their cell or smart phones. BET will allow customers to check balances, make remote photo capture check deposits, and perform balance transfers to their checking or savings account. It is time t...

Math
approximate 1802 ft

Math
A single card is drawn from a deck. Find the probability of selecting a 10 or a diamond.

chemistry
at 20 C the vapor pressure of dry ice is 56.5 atm. if 32 g of dry ice is placed in an evacuated .25 l chamber at a constant temperature of 20 C will all the dry ice sublime

chemistry
at 20 C the vapor pressure of dry ice is 56.5 atm. if 32 g of dry ice is placed in an evacuated .25 l chamber at a constant temperature of 20 C will all the dry ice sublime

physics
an electron with a mass of 9.11 x 10^-31 kg is accelerated from rest across a set of 150 V and are separated by 0.80 cm. a) determine the kinetic energy of the electron after it crosses between the plates.( ans 2.4 * 10^-17 j) b) determine the final speed of the electrons. (an...

science
How would you find a mass of a rolling marble?

R&slotto pool
What are the possible numbers to play for todays club master lotto pool

principal management
Discuss how the path-goal theory of leadership and the expectancy theory of motivation are related

principal management
8. (TCO8) Briefly explain what is meant by objective and judgmental performance evaluation. Discuss two methods of judgmental evaluation. (Points : 10)

5th grade math
Ryan worked 1 3/4 hours one day and 2 3/4 hours the next day. Estimate the total number of hours he works on both days combined.

5th grade math
Ryan worked 1 3/4 hours one day and 2 3/4 hours the next day. Estimate the total number of hours he works on both days combined.

MATH HELP Algebra
An illustration of the associative property of addition provide an example

Please HELP with this storie problem
I need help with some of the problems I have all ready posted please help me

Please HELP with this storie problem
Dave buys 3 green peppers and 2 red peppers for $3.45. Ruth buys 4 green peppers and 3 red peppers for $ 5.00. Find the price of each variety of pepper.

MATH help PLZ provide an example
An illustration of the associative property of addition provide an example

MATH help PLZ provide an example
An illustration of the associative property of addition provide an example

Math help give example
A third degree polynomial of one variable with four terms written in descending order

Math help storie problem
Dave buys 3 green peppers and 2 red peppers for $3.45. Ruth buys 4 green peppers and 3 red peppers for $ 5.00. Find the price of each variety of pepper.

Math help give an example
The equation of a line that is perpendicular to the line y=-7x+4

Math help give an example
The equation of a line that passes through (0,0)

Math help plz
To determine the number of fish in a lake , a conservationist catches 500 fish, tags them, and releases them into the lake. Later, 120 fish are caught and 25 of them are tagged. Estimate the number of fish in the lake.

How do I solve for w
W^2+48^2=50^2

Math help
Find the width of a recctangle that has a length of 48 cm a diagonal of 50 cm.

Solve for x math help
(x-4)^2=12

Math solve for x
X^2-4x-24=0

chemistry
Yes theanwser would be anwser B

Math storie problem
The perimeter of a rectangle is 82 yards. The length is two yards more than the width. Find the dimensions of the rectangle.

MATH help PLZ sole for x:
Solve for x: X-1/x = 3x/x-2

Please help me out I can't figure out how to do th
Graph this equation: x=-3 PLZ show the steps of how you got it.

Math story problem
Melissa and Emily leave by car from the same location traveling in opposite directions. Melissa leaves at 4:00 traveling at 55mph. Emily leaves at 5:00 traveling at 60 mph. At what time will they be at 325 miles apart?

I don't know the quadreatic formula for this
X^2 x+2=82, x^2+2x=82

Math HELP
Write the equation of the line (in slop/intercept form) that has a slop of 7 and goes through the point (6,4).

Math
The perimeter of a rectangle is 82 yards. The length is two yards more than the width. Find the dimensions of the rectangle.

NEED Help math
Graph this equation : X=-3 on a graph PLZ and show how you did it please

Algebra help PLZ NOW
Graph the following equation : 2x-3y=-6

Math help algebra HELP plz
Solve A collection of dimes and quarters is worth $7.65. There are 45 coins in all . How many of each are there?

NEED help ON MATH PLZ
Graph the solution set on a number line : 3x+4>-8

Math Help now !!!! Plz
Solve using the quadratic formula X^2-4x=21

MATH Help NOW!!!! Plz
Solve 3x^2 -49=0

algebra 2
262144

Math help plz
Solve 3x^2-49=0

Math help NOW!!!!! Plz
Solve by completing the square : 2x^2= 9x+5

Algebra
Thanks steve

Algebra
Solve by completing the square: x^2+3x-28=0

Chemistry
If the half-life of uranium-235 is 7.04 (times) 10 (to the eight power) 8 y and 12.5 g of uranium-235 remain after 2.82 (times) 10 (to the ninth power) y, how much of the radioactive isotope was in the original sample?

Chemistry
If the half-life of uranium-235 is 7.04 (times) 10 (to the eight power) 8 y and 12.5 g of uranium-235 remain after 2.82 (times) 10 (to the ninth power) y, how much of the radioactive isotope was in the original sample?

Chemistry
Carbon-14 has a half-life of 5730 y. How much of a 144 g sample of a carbon-14 will remain after 1.719 (times) 10 4y?

Chemistry
Carbon-14 has a half-life of 5730 y. How much of a 144 g sample of a carbon-14 will remain after 1.719 (times) 10 4y?

Chemistry
Dr. Bob, I don't need ur criticism now!! I need your help to resolve these problems

Math 10-3
the work i got from my math teacher says Determine the surface area of each right rectangular prism to the nearest square unit. Any Help with that?....

math
In 2 minutes, a conveyor belt moves 300 pounds of recyclable aluminum from the delivery truck to a storage area. A smaller belt moves the same quantity of cans the same distance in 6 minutes. If both belts are used, find how long it takes to move the cans to the storage area.

math
Three times the reciprocal of a number equals 9 times the reciprocal of 6. Find the number.

lenguage arts
examples of similes

lenguage arts
similes

ACCOUNTING
Mills Company uses standard costing for direct materials and direct labor. Management would like to use standard costing for variable and fixed overhead. The following monthly cost functions were developed for manufacturing overhead items: Overhead Item Cost Function Indirect ...

math
Please, help me! 5/(x^2 - 4) + 2/(x^2 - 4x - 3) - 3/(x^2 - x - 6)

math
Please help me solve it

math
denaminator* (LCD)

math
Yes,I need to simplify it and find least common denamotator.

math
5/x^2-4+2/x^2-4x+4-3/x^2-x-6

Help ASAP calculus
Which is the 7th term in the sequence of the squares of all odd numbers starting from 1? 144 169 196 200 225

Urgent help calculus
If the area in square units of the region under the curve of the function f(x)=5, on the interval from x=a to x=8 is 20 square units what is the value of a? 4 5 6 7 8

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