Friday
April 18, 2014

Posts by tim


Total # Posts: 905

Communication
For the following, state the value of the discriminant and then describe the nature of the sloution. -3x^2-8x-19=0

English
I need to check my work on diagramming this question. How many players are on a team? I think it should be as follows: How (adverb) many (adjective) players (direct object) are (past tense verb) on (proposition) a (definite article) team (subject of proposition)? Does this see...

College algebra
Solve. V^2-6v-16=0

Algebra
How do i simplify 3n^2+3n/6n^2+9 by removing factors of 1

algebra
10 cm^3 of a normal specimen of human blood contains 1.2 g of hemoglobin. How many grams does 17 cm^3 of the same blood contain?

Math
A firecracker is launched straight up, and its height is a function of time, h(t)= -14^2 + 112t, where h is the height in feet and t is the time in seconds with t=0 corresponding to the instant it launches. What is the height 5 seconds after launch? What is the domain of this ...

chem
What pressure (atm) is exerted by a column of ethanol 86.0 cm high. The density of ethanol is 0.789 g/cm3 and 9.8 m/s2 as your gravitational constant.

PHY
A traveling wave is produced on a rope. The wave travels until it hits a wall and it is reflected. If the speed of the wave is 1.8 m/s and it takes 3.3 s to get back to the starting point, how long (m) is the rope.

chem
The average distance between planet X and Earth is about 1.5 x 10^8 miles. How long (minutes would it take pictures transmitted from a space vehicle on Planet X's surface to reach Earth?

chem
At 36.4°C a sample of ammonia gas exerts a pressure of 6.8 atm. What is the pressure when the volume of the gas is reduced to one-fourth of the original value at the same temperature

math
is the pair of lines parallel x+2y=7 and 2x+4y=3

physics
A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. What is the mechanical advantage of the lever? What is the ideal mechanical advantage of the lever? What is th...

physics
3. A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. What is the mechanical advantage of the lever? What is the ideal mechanical advantage of the lever? What is...

Math
How do i graph the function y^2=x*(x-4)^2. I have no idea where to begin.

human resource management
1. Critically evaluate the job analysis that Mary conducted for the position of assistant manager. Has she used appropriate methods? What are the strengths and weaknesses of her efforts? 2. What kind of factors about Today's Fashion and its operations should Mary have exam...

math
fractions equivalent to 18/24

math
Wats 12yds 2ft + 5yds 2ft

physics
in terms of ph,explain what would if you happen if you if you mixed vinegar with a solution of ammonia what type of products would form

math
if all nos in the equation y/y+101 = 11in base 2, solve for y

Compound math
P*(1+i)* Exponent which is time invested $8000x(1+.o62)30 $8000 x ((1 + .062)^30) = $48,621.1794 U.S. dollars

physics
What mass (in grams) of steam at 100°C must be mixed with 341 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 57.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and the latent ...

physics
The average rate at which energy is conducted outward through the ground surface in a certain region is 51.6 mW/m2, and the average thermal conductivity of the near-surface rocks is 3.31 W/m·K. Assuming a surface temperature of 11.7°C, find the temperature (in Celsi...

math
thanks! i really appreciate this :)

math
simplify: 1. a^2b^-3 2. (5/3)^-3 3. (a^2b^0c)^0 4. x^-2y^3 5. 3x^-2 6. n^2/n^-3 please help!!

Tech401
How the internet policies of some countries may affect a company's ability to expand globally?

mathematics
area is length x width so what times what equals 25? 5

chemistry
what is the concentration, in % m/m of a solution prepared from 50.0g sodium chloride and 150.0g of water

Math
How would I solve this...I don't get it. Two solutions of an equation are (6,5) and (8,5). What could the equation be?

phyiscs
Two persons watch the same object move john says that it accelerate straight downward, but Samantha claims that it falls Along curved path.describe the conditions under which each person would be reporting correctly what they see. Thanks and please please please answer this la...

physics urgent
yes mr.pursley

physics urgent
an airplane is flying horizontally over ocean at the speed of 200 meters/seconds and at the altiude of 2000 meters.the pilot drops a flare. A. how many second after release does the flare hit the water? b.At what distance from point p,directly under point of release does the f...

chemistry
when 52 moles of benzene combine with oxgen, how many moles of carbon dioxide are produced? what else is produced in addtion to the carbon dioxide

math
Sa

4th grade math
Name the top view, front view, side view of a cone

algebra (quadratic formula0
2

statistics
an average of 0.56 defects per 500 yards. Using the Poisson formula, find the probability that the number of defects in a given 500-yard piece of this fabric will be more than 3

early childhood ed
a childs observation of a parent writing a grocery list, his recognition of the coca cola logo, and his leafing through mailbox advertising literature exemplify. answers 1. cultural imprints 2. autonomous language 3. literacy events 4. mastery of decontexualized language my an...

geometry
The perimeter of a kite is 24 I'm tring to find the the sides the kite 4cm less than 3 times the length of another

Algebra
Find the polynomial function P of the lowest possible degree, having real coefficients, with the given zeros. 3+2i, -2 and 1

Liberal Arts Math
what is k(p)= (p+3)(p-7)

Chemistry
What is the molarity of CuCl2 solution that completely reacts with 10.0g of zinc , if the volume of the solution is 360mls? Zn(s) + CuCl2(aq) ¨ ZnCl2(aq) + Cu(s) A. 0.42 B. 0.00021 C. 0.21 D. none of these

statistics
Five percent of all items sold by a mail-order company are returned by customers for a refund. Find the probability that of two items sold during a given hour by this company both will be returned for a refund

statistics
Five percent of all items sold by a mail-order company are returned by customers for a refund. Find the probability that of two items sold during a given hour by this company both will be returned for a refund

statistics
an average of 0.56 defects per 500 yards. Using the Poisson formula, find the probability that the number of defects in a given 500-yard piece of this fabric will be more than 3

statistics
Five percent of all items sold by a mail-order company are returned by customers for a refund. Find the probability that of two items sold during a given hour by this company both will be returned for a refund

math
The altitude of a triangle is increasing at a rate of 3 centimeters/minute while the area of the triangle is increasing at a rate of 7 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 22 centimeters and the area is 66 square cen...

social studies
how did the spanish differ from the portugese in searching for a route to asia

THE AGE OF DISCOVERY TO THE AMERICAN EXPERIMENT
its ur ass

math
how much force is need to split a 20" x 20" green hedge log?

english
Write one paragraph of at least 200-words explaining what the student could have done differently to avoid the plagiarism concerns raised by the faculty member. How could the use of Plagiarism Checker have helped the student?

psychology
what is the design, purpose and the limits of an I.Q test?

Physics
A car drove a total 5km. Accelerated 10seconds then had a constant velocity. Entire trip was 45 seconds. Was was the initial acceleration and final velocity?

Physics
A car drove a total 5km. Accelerated 10seconds then had a constant velocity. Entire trip was 45 seconds. Was was the initial acceleration and final velocity?

Algebra
A model train is made by connecting cars with possible lengths of 2 inches and 5 inches. what is the number of inches in the greatest impossible whole-number length of such a train?

chemistry
how much lithium hydroxide will be needed to remove 75.0 grams of carbon dioxide?

algebra
Sam has $50 in the bank. He deposits $5 each week and does not withdraw any money. How much will he have in his account in w weeks?

Chemistry
Mass of flask = 81.39g Mass of flask and water = 104.26g Mass of flask ,water,and solute =129.53 Mass of solute= 25.27g Boiling point of water =98.7C Boiling point of solution =109.5C Calculate the molecular weight of the solute using the data. M=Kb*r solute/delta Tb*kg solven...

algebra
y+x=-9

algebra
slope x=-6

algebra
6+9x<42

algebra
solve -10<=3x-5<=-4

economics PLEASE HELP
According to the permanent income hypothesis, households will tend to react to a temporary tax cut by

geometry
Triangle ABC is an isosceles triangle, where angle B is the vertex angle. If BC = 10x-4 , AC= 2x+18 , and AB= 6x+32, find the value of x.

calc
construct an isoceles triangle with an area of 100. what is the length of the base of the triangle which has the smallest perimeter? Prepping for a test, explanations please

physics
A convex mirror with a radius of curvature of 10 cm (C=10 cm) produces a virtual image 1/3 the size of the real object. What is the object's distance?

Chemistry
A 15.0% (by mass) NaCl solution is available.. Determine what mass of solution should be used to obtain a. 2.50 mole of NaCl b. 25.0 g/mol of NaCl

math
A square room has perimeter of 32 feet. How. Many many square floor tiles with sides 1 foot long are needed to cover floor

Physics
An amusement ride consists of a large horizontal circular platform turning at 12 rpm. People attempt to sit on this platform without slipping toward the outer edge. The coefficient of static friction is 0.15. Determine the distance from the center of the platform that a 150-po...

us history
The Mayflower compact is an example of which concept?

algebra
solve using the multiplication principle.

Math
My teacher gave us a puzzle. I have worked on it for 2 hours with both my parents and they can not figure it out. 0 o 0 o 0 o 0 o 0 In the above there are 5 squares. Top left, top right, bottom left and bottom right, and the last one formed by the o's diagaonally. Arrange ...

algebra word problems
You have a total of $175 in $5 and $20 bills. The number of $5 bills you have is 3 more than 4 times the number of $20 bills. How many of each type of bill do you have?

college chemistry
10.0 mL of 0.15M of sulfuric acid is titrated with 0.05M of sodium hydroxide. how many mL of sodium hydroxide solution are required to reach the equivalence point?

college chemistry
10.0 mL of 0.15M of sulfuric acid is titrated with 0.05M of sodium hydroxide. how many mL of sodium hydroxide solution are required to reach the equivalence point?

chemistry
10.0 mL of 0.15M of sulfuric acid is titrated with 0.05M of sodium hydroxide. how many mL of sodium hydroxide solution are required to reach the equivalence point?

chemistry
10.0 mL of 0.15M of sulfuric acid is titrated with 0.05M of sodium hydroxide. how many mL of sodium hydroxide solution are required to reach the equivalence point?

physics please help
A 8.6 kg board is wedged into a corner and held by a spring at a 50.0° angle, as the drawing shows. The spring has a spring constant of 186 N/m and is parallel to the floor. Find the amount by which the spring is stretched from its unstrained length.

Physics
A ski gondola is connected to the top of a hill by a steel cable of length 620 m and diameter 1.5 cm. As the gondola comes to the end of its run, it bumps into the terminal and sends a wave pulse along the cable. It is observed that it took 14 s for the pulse to travel the len...

Physics
A mass of 1.66 kg stretches a vertical spring 0.312 m. If the spring is stretched an additional 0.136 m and released, how long does it take to reach the (new) equilibrium position again?

Science
How many atoms of aluminum can be produced by the decomposition of 47.1 g of Al2O3? (Hint: Write and balance the equation first.) The products are oxygen gas and aluminum metal (Al) A) 1.11 X 10^24 Al atoms B) None of these C) 1.39 X 10^23 Al atoms D) 5.56 X 10^23 Al atoms E) ...

physics
A 0.01-kg baseball traveling in a horizontal direction with a speed of 12 m/s hits a bat and is popped straight up with a speed of 15 m/s. (a) What is the change in momentum (magnitude and direction) of the baseball? (b) If the bat was in contact with the ball for 26 ms, what ...

physics
An object of mass 4.3 kg is projected into the air at a 45° angle. It hits the ground 3.8 s later. What is its change in momentum while it is in the air? Ignore air resistance.

physics
A 0.105 kg baseball is thrown upward with an initial speed of 12.0 m/s. (a) What is the force on the ball when it reaches half of its maximum height? (b) What is the force on the ball when it reaches its peak?

physics
its not 9.8 or 9.81, ive already tried that

physics
A 2.22 kg book is dropped from a height of +3.2 m. What is its acceleration? can you help?

Calculus
Your problem doesn't state the original population, so you need to rephrase your homework question to give all the information. You can use a program like Winplot to plot this function, and pick off the relevant data.

calculus
Lim= x-Infinite x+0/(x2+1)=? please show work

Physics
never mind, found the mistake I was making.

Physics
Using the definition of the scalar product, find the angles between the following pairs of vectors. A = - 4 i + 2 j + 2 k and B = - 3 j - 3 k I understand to do [(A).(B)]/|A|*|B| = cos theta; but I'm getting 0 for |A| and don't know how to access it from there.

calculus
A particle moves along the curve y=square sqrt 1+x^3. As it reaches the point (2,3), the y-coordinate is increasing ata a rate of 4cm/s. How fast is the x-coordinate of the point changing at that instant?

physics
73.5 miles south

science
Name some ways the wind and rain change the Earth's top layer(soil).tell why?

9th grade
Use the distributive property to simplify: 25(2x + 1/5).

Check a chemistry answer
So I think I have done this problem right, I was just wondering if anyone would check over it for me. What mass (in grams) of P2O5 contains 1.20 x 1023 atoms of phosphorus? 1.20E23 atoms of P x (1 mol/ 6.022E23 atoms) x (5 mol O/ 2 mol P) x (1 mol P2O5/ 5 mol O) x (79.995g/ 1 ...

science
can you list the things that causes weathering?Please.

Algebra
What is the domain of the function f(x) = square root of (12x-24) I don't get this concept and I have a ton of these problems-can you please explain how to get it Thank you

buisness and tecnoligy
How can lean manufacturing and near-sourcing help a company gain a competitive edge and prepare for the future

social studies
New York city is located in the northeastern part of the united states.It has an area of 47,377 square miles and a total inland water area of 1,731 square miles.New York city is one of the 62 counties of New York state and is consist of many road and railways.The capital of Ne...

social studies
I think New york is located more to the south of the map. Its capital is Albany and it sits at the mouth of the Hudson River.

social studies
by helping me write the paragraph

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