# Posts by bob

Total # Posts: 3,229

**MATH**

A is the midpoint of BC. BA=2x+5 and BC=5x-3. solve for x and find the length of BC

*January 16, 2011*

**math**

Gloves down

*January 15, 2011*

**honors chemistry**

no, that is what i meant to type, that's just the question on my homework

*January 13, 2011*

**honors chemistry**

Which gas has solubility in water (at STP) of 3.39 L at 10.0°C?

*January 13, 2011*

**9th grade algebra**

The sum of two numbers is 90.their difference is 18.find the numbers.

*January 11, 2011*

**science**

if earth is one astronomical unit from the sun and has a period of 1 year, approximately how far is planet X form the sun if it has a period of 26 yearS

*January 11, 2011*

**Iron and Sulphur reaction**

iron+sulfur(or sulphur)=FeS

*January 10, 2011*

**math**

Dents and Dings Auto Body buys paint with a list price of $29,000. If the supplier extends trade discounts of 30/35/20, what is the trade discount amount?

*January 9, 2011*

**Chemistry**

CO2 (g)

*January 9, 2011*

**chemistry**

In one mole of the compound nitrogen diox- ide, what fraction of the total number of ions is the nitrogen ion?

*January 9, 2011*

**Math**

write a formula that gives you the number of regions formed when x points are placed on a circle and all possible chords are drawn. ex. 2pts has 2 regions, 3pts has 4 regions, 5pts has 17 regions

*January 7, 2011*

**math**

??????

*January 5, 2011*

**Physics**

A 10 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 86 N parallel to the incline, which makes an angle of 30 ° with the horizontal. Assuming the coefficient of kinetic friction is 0.4 and the crate is pulled a distance of 7.5 ...

*January 5, 2011*

**trig**

what is the value of the discriminant x^2-9

*January 5, 2011*

**Physics 12th Grade**

Two girls with masses of 50.0 kg and 70.0 kg are at rest on frictionless in-line skates. the larger girl pushes the smaller girl so that the latter rolls away at a speed of 10.0 m/s. What is the effect of the action on the larger girl? What is the impulse that each girl exerts...

*January 5, 2011*

**chemistry**

A solution of ethanol (C2H5OH) in water is prepared by dissolving 87.4 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?

*January 3, 2011*

**Geometry**

Find the surface area of a right octagonal pyramid with height 2.5 yards, and its base has apothem length 1.5 yards.

*December 30, 2010*

**Physics**

990 N

*December 29, 2010*

**GENERAL ART**

HOW DO YOU DRAW 3 D BOXES

*December 21, 2010*

**7th Pre-Algebra Word Problem**

Thanks

*December 20, 2010*

**7th Pre-Algebra Word Problem**

Approximately one-seventh of the people in the United States are left-handed. The population of the United States is about 300 million. Write and solve an equation to estimate howmany people in the United States are left handed.

*December 20, 2010*

**Physics**

Two brothers are jogging, Josh and Drake. Josh has 1/2 the KE of Drake. Also, he is twice the mass of Drake. Plus, Josh had to increase his speed by 1.35 meters/second to achieve the same kinetic energy of Drake. What is the initial velocity?

*December 18, 2010*

**Math**

prove that two triangles are congruent if they have 2 equal adjacent angles and the side inbetween them is also the same.

*December 17, 2010*

**math**

find three rational numbers between the negtive square root of 26 and the negtive square root of 15 and explain how you got the answer

*December 17, 2010*

**Math**

prove that two triangles are congruent if they have 2 equal adjacent angles and the side inbetween them is also the same.

*December 16, 2010*

**high school**

1400n

*December 16, 2010*

**math**

Find the range of possible measures if each set of expressions represents measures of the sides of a triangle:x 2x+10, x+8

*December 16, 2010*

**Language arts**

Figurative language

*December 15, 2010*

**geometry**

Write and solve an inequality to find the calues of x for which the area of the rectangle is greater than the are of the triangle

*December 15, 2010*

**11th grade**

20xsquared+40 x+15=0

*December 13, 2010*

**algebra**

Thanks

*December 13, 2010*

**algebra**

10-d=19 What is d? I think it is -9.

*December 13, 2010*

**Physics**

6000

*December 11, 2010*

**math**

how do you solove I=$440 P=??? R=7% T=4 years

*December 9, 2010*

**7th grade**

i need help with another I=$440,P=??,R=5%,T=4 years what is p

*December 9, 2010*

**7th grade**

thank you

*December 9, 2010*

**7th grade**

I=$440 P??? R=7% T=4years this is simple interest

*December 9, 2010*

**7th grade**

i need help with simple interest math homework.NOW!

*December 9, 2010*

**History**

dont go down really don't go i mean it

*December 9, 2010*

**Finance**

The extent to which inventory financing may be used depends on

*December 9, 2010*

**finance**

At age 5, how much would you have to save per month to have $1 million in your account at age 65, if your investment rate was 10% per year? Assume no taxes and compounding on a monthly basis.

*December 9, 2010*

**trig**

solving radical equations... help! 5+¡în+1= n+4

*December 8, 2010*

**science 6thgrade**

What?

*December 7, 2010*

**Math**

12 Quarters 7 Dimes 3 Nickels

*December 7, 2010*

**Math**

12 quarters 7 dimes 3 nickels

*December 7, 2010*

**Math question**

pi*r^2 3.14*20cm.^2 =1256.63 take that and divide by four and you get 314.16

*December 7, 2010*

**physics**

I have a capacitance of 5.75e-10 What is it in Farads?

*December 7, 2010*

**pre algebra 6th grade**

250=x-.08x 250=(1-.08)x 250/(1-.08)=x 271.73=x

*December 7, 2010*

**algebra**

x=4 y=2 perimeter= (2*4)+(2*2) = 8+4 =12

*December 7, 2010*

**Physics**

I need help solving for q. Here is the formula. F=(k*q*2q)/r^2

*December 7, 2010*

**Geometry**

h=(2A)/B =(2*6.75)/3 =4.5 m

*December 7, 2010*

**bio 102**

assuming the standard values for the atmospheric partial pressure of N2, O2, AND CO2 at sea level, what is the approximate total partial pressure of the remainig atmospheric gases?

*December 7, 2010*

**Chemistry**

0.500 moles of NOCl is placed in a 1.00L vessel at 700K,and after the system comes to equilibrium,the concentration of the NOCl is .440M. Calculate the value of Kc for the reaction @NOCl(g)->2NO(g)+Cl2(g)?

*December 6, 2010*

**math**

what is the ascending order of 8+7x^2-12x^3-4x^3y

*December 6, 2010*

**100000000 grade**

1000000000000000000000000000000000000000000000000000000000000000000000000000000 ways

*December 6, 2010*

**chemistry**

What is the formula for the compound formed when potassium reacts with nitrogen?

*December 6, 2010*

**science**

A 75-kg person on skis is going down a hill sloped at 30.0°. The coefficient of kinetic friction between the skis and the snow is 0.15. How fast is the skier going 10.0 s after starting from rest?

*December 5, 2010*

**algebra**

A*B=A*B Solve for B

*December 5, 2010*

**physics**

A 65 kg person runs with a horizontal velocity of 3.5 m/s and jumps onto an 0.9 kg skateboard which is initially at rest. Assuming negligible friction, what will be the final velocity of the skateboard and the person?

*December 3, 2010*

**physics**

An 85.0 kg fisherman decides to jump from his boat onto the dock. If the velocity of the fisherman is 4.30 m/s to the west and the boat is 185 kg, what is the velocity of the boat after the fisherman jumps out?

*December 3, 2010*

**physics**

A billiard ball traveling at 8.0 m/s has an elastic collision with a second billiard ball of equal mass that is at rest. After the collision, the first ball is at rest. What is the velocity of the second ball after the collision?

*December 3, 2010*

**physics**

a chunk of clay in the shape of Bugs Bunny has a mass of 0.75 and an initial velocity of 5.0 m/s to the right. a second chunk of clay is in the shape of Elmer Fudd has a mass of 0.25 kg and an initial velocity of 3.0 m/s to the left. what is the composite velocity ater the ...

*December 3, 2010*

**Math- HELP**

12/17 duh!

*December 2, 2010*

**chemistry**

Imagine that one carbon in buckminster- fullerene (C60) is replaced by a silicon atom,yielding SiC59. This molecule can then orient in 60 different ways. What is the entropy of one mole of SiC59 at T = 0 K? 1. 4.53 × 10−20 J/K 2. 27.3 kJ/K 3. 34.0 J/K 4. 5.65 &...

*November 30, 2010*

**Biomechanics**

If an average net force of 20N at 45* is applied to a 0.35 kg water balloon for 0.12s. how far away should the catcher stand? Assume release height and cathc height are the same and air resistance is not a factor.

*November 29, 2010*

**Med lab tech**

unsaturated Solution

*November 27, 2010*

**chemistry**

Thank you!!

*November 26, 2010*

**chemistry**

I have found a balanced redox equation for removal of silver sulfide using sodium hydrogen carbonate in aluminium to say: 2Al + 3Ag2S + 6H2O --> 6Ag + 2Al2(OH)3 + 3H2S What happens to the Na and C component of the sodium hydrogen carbonate? And why is it not included on LHS...

*November 26, 2010*

**JAVA SCRIPT**

What is the purpose of the modulus operator? Provide an example of when it can be used and the value that would be returned.

*November 26, 2010*

**ethics**

ok thank u so much!! :)

*November 22, 2010*

**ethics**

so what is a example?

*November 22, 2010*

**ethics**

Does your organization address ethical issues in a formal and systematic way? If so, is it a cookie-cutter, one-size-fits-all approach or has the organization customized an ethical culture to match its unique needs? Please provide examples. i don't have a job so how can do...

*November 22, 2010*

**English**

Skeptics argued that the boss's UNORTHODOX management style would... im not sure how to! I know that unorthodox means disregarding or defying traditions or standards

*November 21, 2010*

**English**

Ske[tics argued that the noss's UNORTHODOX management style would...

*November 21, 2010*

**English**

With the election so near, the mayor became RETICENT about..... what could i write to finish the sentence?

*November 21, 2010*

**English**

1. to suppress with threat or force 2. to declare invalid

*November 21, 2010*

**English**

If the king fails to QUASH the rebel forces, they will... what could i write to finish the sentence?

*November 21, 2010*

**English**

incorrigible?

*November 21, 2010*

**English**

Thought to be _______, the criminal was sentenced to life without parole. 1.blasphemous 2.heretic 3.incorrigible

*November 21, 2010*

**Math**

Are the following fractions equivalent? justify your answer 18/24 9/12 15/20 6/9

*November 21, 2010*

**physics**

a 60 kilogram student sitting on a hardwood floor accelerates at 1.3 meters per second squared when pulled by a 240 newton horizontal force. what is the coefficient of friction between the student and the floor?

*November 21, 2010*

**COLLEGE**

yes under the cupboard

*November 21, 2010*

**12th Grade English**

wow poetry in motion

*November 21, 2010*

**Chemistry**

1e-7

*November 20, 2010*

**calculus**

Coroners estimate time of death using the rule of thumb that a body cools about 2 degrees F during the first hour after death and about 1 degree F for each additional hour. Assuming an air temperature of 78 degrees F and a living body temperature of 98.6 degrees F, the ...

*November 18, 2010*

**C programming**

Help would be grately apreciated on this problem thank you! Backgound The employees can be any one of the two types: 1) Full-Time Salaried (FTS) and 2) Part-Time Hourly (PTH). Currently, there are totally 1050 FTS employees and 274 PTH employees in a company. The company plans...

*November 18, 2010*

**Computers C**

Backgound The employees can be any one of the two types: 1) Full-Time Salaried (FTS) and 2) Part-Time Hourly (PTH). Currently, there are totally 1050 FTS employees and 274 PTH employees in a company. The company plans to add up to 50 new employees FTS employees are paid in a ...

*November 18, 2010*

**calculus**

f(x,y)=x^2+2y^2 use the gradient vector Þf(5, 1) to find the tangent line to the level curve f(x, y) = 27 at the point (5, 1). answer choices: 1. 10x + 4y = 27 2. 2x + 4y = 27 3. 5x + 2y = 27 4. 10x − 4y = 27 5. 5x − 2y = 27

*November 17, 2010*

**calculus**

Use differentials to estimate the amount of tin in a closed tin can with diameter 6 cm and height 14 cm if the tin is 0.046 cm thick.

*November 17, 2010*

**arithmetic**

dude why do you put su hard question on here and nobody can do it

*November 17, 2010*

**geometry**

draw an acute scalene triangle ABC in the center of your paper with sides approximately 8cm 10cm and 16cm

*November 17, 2010*

**Math**

5 mins.

*November 16, 2010*

**4th grade math**

31 X 19 in expanded algorithm

*November 16, 2010*

**chem**

let's say that an average egg has a mass of 48 g. What mass would a mole of eggs have?

*November 16, 2010*

**chemistry**

Surface tension explains which of the follow- ing phenomena? I) A piece of aluminum foil floating on a lake II) A bowling ball sinking more slowly through molasses than through water III) Separating ethanol from water by distillation IV) Water beading on a windshield during ...

*November 14, 2010*

**math; distributive property;perimeter of a triangl**

4+4+3h+2

*November 14, 2010*

**Physics**

Toward the support point

*November 13, 2010*

**Physics**

you use the mg-(2.3E2*cos21)for fnormal...bobpursley you really should check your work before...

*November 13, 2010*

**economics**

drop in output

*November 11, 2010*