Thursday
December 8, 2016

# Posts by DJ

Total # Posts: 268

MATH PROBLEM
COULD I GET HELP SOLVING THIS PROBLEM USING THE DISTRIBUTIVE PROPERTY 5(W-5)= 10 W =
January 21, 2012

Math Question
could some help me with this problem Solve and steps -0.5x < -15
January 21, 2012

math question
solve using additin and multiplication principle 6+8x<22
January 21, 2012

Math question
Please help me to solve by substitution method. 7x+8y =44 x=41-5y
January 20, 2012

Calculus
(y/(x+9y))= (x^2)-7 at the point (1, -6/55) Use implicit differentiation to find the slope of the tangent line to the curve
October 28, 2011

Calculus
Use implicit differentiation to find the slope of the tangent line to the curve 2(x^2) + 2xy + 2(y^3)= -18
October 28, 2011

Calculus
f(x)= 6ln(2x+7ln(x)) I need to find the first derivative.
October 28, 2011

Chemistry
24.5 mL of concentrated HCl is diluted to make 455 mL of .256 M solution. What is the molarity of the concentrated HCl?
October 25, 2011

Calculus
(A) Given that P = {X0, X1, X2.......Xn} is an arbitrary partition of [a,b], find the lower and upper sum for f(x)=x+3. (B) Use your answers to part (a) to evaluate the integral of f(x) from a to b.
October 16, 2011

Calculus
A right circular cone is inscribed in a sphere of radius r. Find the dimensions of the cone that maximize the volume of the cone.
October 16, 2011

Calculus
Show that of all rectangles with diagonal length c, the square has the largest area.
October 16, 2011

physics
ohh.. now i've got it thank you
October 8, 2011

physics
You are given a vector in the plane that has a magnitude of 86.0 units and a component of -30.0 units. What are the two possibilities for its component?
October 8, 2011

Calculus
show lim x->3 (sqrt(x)) = (sqrt(c)) hint: 0< |sqrt(x)-sqrt(c)|= (|x-c|)/(sqrt(x)+sqrt(c))<(1/(sqrt(c))*|x-c|
October 4, 2011

math
the number of my hunderds plus the number of my thousandsin 3. the number of my tens is 7 times the number of my hundreds. the number of my ones is 3 times the number of my thousands. allmy digits are differnt. what number am i ?
September 28, 2011

BUSN
$1,000,000 and$800,000 respectively
September 6, 2011

geometry
the surface area of a prism is 120 sqaure cm and the area of each base is 32 square cm find the lateral area of the prism.
June 21, 2011

Math
How many grams of saline are needed to make 300 ml of 0.9%(w/v) saline?
June 8, 2011

Algebra 2
Solve the equation 6(3x + 1) = 8. Round the answer to four decimal places.
June 4, 2011

statistics
A vending machine dispenses coffee into a sixteen ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.03 ounces. You can allow the cup to overfill 10% of the time. What amount (in ounces) should you set as the mean ...
May 25, 2011

Maybe you meant "compete"? To compete means to try to win or do better than others. Based on your example (which are plants), when they get crowded, the amount of resources intended for them has decreased to a very small amount. This amount cannot sustain their needs...
May 24, 2011

Physics 101
I figured it out already, thanks. I was just having trouble with converting dB to W/m^2. Anyway, here's my answer. Feel free to correct it. I - Intensity P - Power E - Energy t - time A - Area I = P/A ; I = E/t / A ; E = IAt Io = 1x10^-12 W/m^2 (treshold of hearing) ...
May 19, 2011

Physics 101
A 90-dB sound is absorbed by an eardrum 0.75 cm in diameter for 2 hours. How much energy in joules does the eardrum absorb at that time?
May 19, 2011

education
what are strategies that a concerned parent can us to help improve his or her child's reading and writing skills
May 12, 2011

Physics
explain the concept of electric potential difference in terms of work done in transferring the charge
April 13, 2011

Chemistry I
If the theoretical yield of a reaction is 0.173g and the actual yield is 0.165g , what is the percent yield?
April 9, 2011

Statistics
A computer manufacturer is about to unveil a new, faster personal computer. The new machine clearly is faster, but initial tests indicate there is more variation in the processing time. The processing time depends on the particular program being run, the amount of input data, ...
March 25, 2011

Physics
A patient has a far point of 34.6 cm and a near point of 26.0 cm. What power (in diopters) should be prescribed to give the patient normal vision for: (a) contact lenses? 1) D (b) glasses which are worn 0.9 cm away from the patient's eyes? 2) D
February 14, 2011

management
Given the following amount of work in seconds required at each station: _____________________ A 38 J 32 X 22 B 34 K 30 Y 18 C 35 L 34 Z 20 a. What is the possibility daily output of this “process” if 8 hours of processing time is available each day?
January 30, 2011

you find out
January 10, 2011

thank you
January 10, 2011

criminal justice
what are 2 major influencing factors and how dose federal sentencing guidelines have an effect on these influences
November 30, 2010

chemistry
what is the molecular mass of a solute if a solution containing 150 g of that solute and 1.0 kg of water has a boiling point of 102.0 degree c? (Kb= 0.512 degree C/m)
November 28, 2010

Math
there are a lot of them but i chose 1, 4, 8,10
November 15, 2010

physics
A long jumper jumps with the initial velocity of 12.0 m/s at an angle of 20 degrees. what is the displacement of x?
November 5, 2010

Pearson
0.0195
November 4, 2010

math
The carpenter wants to make a dresser based on the dollhouse furniture. The scale is 5\2in : 1ft. The height of the dollhouse is 10in. What is the height of the carpenter's dresser.
November 3, 2010

math
A building 35ft tall casts a shadow 105ft long .Patty casts a shadow 16.5 ft long. how tall is Patty?
November 3, 2010

math
thank you !!!
November 3, 2010

math
A fence post 3ft tall casts a shadow 16ft long . At the same time ,the barn casts a shadow 96ft long. how tall is the barn?
November 3, 2010

calculus
Find the formula for the described function and state its domain. An open rectangular box with a volume of 8 cubic meters has a square base. Express the surface area of the box as a function of S(x) of the length x of a side of the base.
October 27, 2010

algebra
what is the average height of a softball that is pitched to a batter from 45 feet away?
October 19, 2010

Why is a short curcuit called a short curcuit?
October 18, 2010

Math
The answer according to the calculator is 15.What I think the answer is 45.
October 18, 2010

Chemistry
If 920 mL of 0.0402 M aqueous LiOH reacts stoichiometrically according to the balanced equation, what mass (g) of gaseous CO2 is required? 2 LiOH(aq) + CO2(g) → Li2CO3(aq)
September 28, 2010

chemistry
How many {\rm NO}_{2} molecules would form as products if the reaction had a percent yield of 75\%?
September 20, 2010

math
t over 30
September 1, 2010

geometry
How much foil is required to cover a rectangular box that is 4in. by 8in. by 5in.? use 3.14 as an aproximation for pi. where appropriate.
July 17, 2010

geometry
in triangle abc angle b is 3 times angle a and angle c is 8degrees less than 6 times angle a?
July 6, 2010

Geometry
A regular hexagon is made from equilateral triangle by cutting along the dotted lines and removing the three smaller triangles. if triangle has a perimeter of 18, what is the perimeter of hexagon?
June 10, 2010

english
underline complete subject and complete pedicate to my sentences. The boys and girls studied different kinds of measures.
May 26, 2010

Geometry
Lines l and m have an intersection at point O and any reflection in l followed by a reflection in m results in a rotation about point O of 136 degrees. What is the acute angle between l and m? Thank you!!
May 15, 2010

Chemistry
1.61 hours
April 18, 2010

math
how to work out the answer to 0.08 divided by 0.7, it dividing decimals
April 16, 2010

Physics
Two Q = +6.72 mC charges are placed at opposite corners of a square d = 1.5 m on each side, and -Q = -6.72 mC charges are placed at the remaining corners, as shown in the figure. Q___________-Q | | | | | | | | -Q__________Q
April 8, 2010

what is the LCM of 8,and 19
March 25, 2010

physics
n a physics lab experiment, a spring clamped to the table shoots a 21 g ball horizontally. When the spring is compressed 20 cm , the ball travels horizontally 5.2 m and lands on the floor 1.5 m below the point at which it left the spring.
March 23, 2010

A person whose eyes are H = 1.62 m above the floor stands L =2.24m in front of a vertical plane mirror whose bottom edge is 43 cm above the floor. What is the horizontal distance x to the base of the wall supporting the mirror of the nearest point on the floor that can be seen...
March 8, 2010

physics
A piano tuner hears one beat every 2.8 s when trying to adjust two strings, one of which is sounding 440 Hz, so that they sound the same tone. How far off in frequency is the other string?
February 10, 2010

accounting
what is the quality of the disclosures for guarantees and commitments for nortel networks corporation? and could these disclosures be improved?
January 29, 2010

Physics - Momentum
A ball of mass m makes a head-on elastic collision with a second ball (at rest) and rebounds with a speed equal to one-third its original speed. What is the mass of the second ball?
December 10, 2009

Physics - Momentum
A child in a boat throws a 5.60 kg package out horizontally with a speed of 10.0 m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 22.0 kg and that of the boat is 55.0 kg.
December 9, 2009

MATH
Joe bought 2 dozen eggs at the store. On the way he dropped the eggs and broke 3/4 of them. How many eggs broke?
December 8, 2009

MATH
Carmen spent 4 hours at the Y on Saturday. Two thirds of that time she spent in the gym. How many hours did she spend in the gym?
December 8, 2009

home economics
what are ten careers in home economics
December 4, 2009

Physics Work and Energy
A 55 kg trampoline artist jumps vertically upward from the top of a platform with a speed of 5.5 m/s. (Ignore small changes in gravitational potential energy.) (a) How fast is he going as he lands on the trampoline, 3.0 m below? (b) If the trampoline behaves like a spring of ...
November 23, 2009

Physics - Work and Energy
Jane, looking for Tarzan, is running at top speed (3.6 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward? Does the length of the rope matter?
November 16, 2009

accounting
Question 2.) Hawkeye Electric Company engaged in the following transactions during July. July 2 – Purchased inventory for cash, $800 July 5 – Purchased store supplies on credit terms of net eom,$600. July 8 – Purchased inventory of \$3,000, plus freight charges ...
November 11, 2009

phyics-universal gravity
Calculate the force of gravity on a spacecraft 6400 km (1 earth radii) above the Earth's surface if its mass is 1600 kg.
November 3, 2009

Pre- Caluculus
Find the time at which the depth of the water in the tank is eual to half its initial depth. D(t)=sqrt(100-2t) the tank is empty when t=50 min
October 21, 2009

social studies
What is the province of Charlottetown Canada?
October 14, 2009

physics
A window washer pulls herself upward using the bucket-pulley apparatus. The mass of the person plus the bucket is 69 kg.How hard must she pull downward to raise herself slowly at constant speed?If she increases this force by 11 percent, what will her acceleration be? There is ...
October 13, 2009

Physics
okay well i am confused about the way you can figure out the acceleration if the tension is increased by 11%
October 13, 2009

Physics
no since there is only one pulley then there is only one rope and if there is only one pulley and one rope there is only one tension
October 13, 2009

Physics
to get T would you just do 69(9.8)
October 13, 2009

physics
A box is given a push so that it slides across the floor. How far will it go, given that the coefficient of kinetic friction is 0.15 and the push imparts an initial speed of 3.9 m/s?
October 13, 2009

physics
A box weighing 69 N rests on a table. A rope tied to the box runs vertically upward over a pulley and a weight is hung from the other end. Determine the force that the table exerts on the box if the weight hanging on the other side of the pulley weighs one of the following: a)...
October 8, 2009

Physics - HELP please
A 24.0 kg box (m1) rests on a table.(b) A 13.0 kg box (m2) is placed on top of the 24.0 kg box, as shown in Fig. 4-35. Determine the normal force that the table exerts on the 24.0 kg box. Determine the normal force that the 24.0 kg box exerts on the 13.0 kg box.
October 8, 2009

Physics - HELP please
A 24.0 kg box (m1) rests on a table.(b) A 13.0 kg box (m2) is placed on top of the 24.0 kg box, as shown in Fig. 4-35. Determine the normal force that the table exerts on the 24.0 kg box. Determine the normal force that the 24.0 kg box exerts on the 13.0 kg box.
October 8, 2009

physics
what if there are no passengers? for max force i got 330 and for the min force i got 165
October 8, 2009

physics
An elevator (mass 4125 kg) is to be designed so that the maximum acceleration is 0.0400g. What is the maximum force the motor should exert on the supporting cable? What is the minimum force the motor should exert on the supporting cable?
October 8, 2009

physics - forces
A person pushes a 16.0 kg lawn mower at constant speed with a force of 70.0 N directed along the handle, which is at an angle of è = 45.0° to the horizontal. Calculate the force the person must exert on the lawn mower to accelerate it from rest to 1.2 m/s in 2.0 ...
October 8, 2009

physics
A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. The plane is traveling horizontally with a speed of 280 km/h (77.8 m/s). (b) Suppose, instead, that the plane releases the supplies a horizontal distance of 425 m in advance of ...
September 27, 2009

physics
A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. The plane is traveling horizontally with a speed of 280 km/h (77.8 m/s). (b) Suppose, instead, that the plane releases the supplies a horizontal distance of 425 m in advance of ...
September 26, 2009

physics
An airplane is heading due south at a speed of 515 km/h. A wind begins blowing from the southwest at a speed of 100 km/h (average). (Hint: First draw a diagram.) (a) What is the velocity (magnitude and direction) of the plane relative to the ground? magnitude/direction (east ...
September 26, 2009

physics
A hunter aims directly at a target (on the same level) 120 m away. (a) If the bullet leaves the gun at a speed of 290 m/s, by how much will it miss the target? (b) At what angle should the gun be aimed so the target will be hit?
September 26, 2009

physics
A car is driven 105 km west and then 30 km southwest. What is the displacement of the car from the point of origin (magnitude and direction)?
September 21, 2009

chemistry
what is the molarity of the solution which contains 5.0g of NaOH(formar weight=40g/mole)dissolved in water to make 200 ml of soluitons?
September 4, 2009

physics
positive
September 3, 2009

social studies 7th grade
what was the name of the school
August 27, 2009

social studies 7th grade
School from old times that would hit kids stick if they talked back or out of turn if they had messy work they would hit them
August 27, 2009

math?
thats why the answer not 3^2^280 I am not understanding the answer you don't multiply 3*2=6^80
August 16, 2009

math?
In the second problem why do I put a 1 before 2^80?
August 16, 2009

math?
Simplify each of the following, if possible. Write your answers in exponential form, a^b 3^4*3^7*3^6 2^80+3*2^80
August 16, 2009

people
Many years ago, a cruise liner sank in the middle of the Pacific Ocean. The survivors luckily landed on a remote desert island. There was enough food for the 220 people to last three weeks. Six days later a rescue ship appeared, unluckily this ship also sank, leaving an ...
July 27, 2009

english
Which of the following is the best opening sentence for a business letter that you want to sound fairly informal? A. I am in receipt of your order of February 10. B. This letter is to make you cognizant of our receipt of your order. C. Your order of February 10 arrived in our ...
February 28, 2009

statistics
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, and 10. a. Compute the mean for this sample. Show your work!! b. Compute the range for this sample. Show your work!! c. Compute the variance for this sample. Show your work!! d. Compute the ...
February 14, 2009

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