Friday

February 12, 2016
Total # Posts: 234

**Chemistry**

What is 431804 and 10235.0 rounded to four significant figures?
*March 3, 2013*

**Math**

It is 72
*February 15, 2013*

**Statistics**

Find the probability that for a random sample of 4 states the sample mean x is between 475 and 525
*February 12, 2013*

**algebra**

A pharmacist has 40% and 60% iodine solutions on hand. How many liters of each iodine solution will be required to produce 4 liters of a 50% iodine. 1. iodine1 = 2, iodine2=2 2. iodine1 = 21, iodine2 = 21 3. iodine1 = 41, iodine2 = 41 4. iodine1 = 41, iodine2 = 21
*January 21, 2013*

**algebra **

A pharmacist has 40% and 60% iodine solutions on hand. How many liters of each iodine solution will be required to produce 4 liters of a 50% iodine.
*January 21, 2013*

**algebra **

graph the following linear equations and determine the correct classification: L1:y=-x+5 and L2:y=-2x+1
*January 21, 2013*

**algebra**

The difference between two numbers is 18. If the sum of three times the smaller number and half the larger number is 2, find the smaller number.
*January 21, 2013*

**physical science**

Under a pressure of 200 kPa, a confined gas has a volume of 2,500 cubic meters. The pressure acting on the gas is increased to 500 kPa. What is the new volume of the gas if the temperature remains the same?
*January 7, 2013*

**science**

How much volume would a 4x4x4 cm cube occupy
*October 25, 2012*

**Math**

Max creates a lavender dye by mixing 3 parts of red dye. Will a mixture of 14 parts of blue dye with 23 parts of red dye create the same shade of lavender?
*October 25, 2012*

**english2**

Bee balm, coneflowers, and black-eyed Susans, brightly colored flowers with darker bulbous centers, contrast beautifully when planted together. is it correct
*October 22, 2012*

**physiscs**

A model rocket is launched straight upward with an initial speed of 53.0 m/s. It acceler- ates with a constant upward acceleration of 3.21 m/s2 until its engines stop at an altitude of 230 m. What is the maximum height reached by the rocket? The acceleration of gravity is 9.81...
*September 29, 2012*

**math**

rewrite the division as multiplication h/1/k
*September 17, 2012*

**hEALTH**

lol Ms. Sue didn't reply so Aya freaked out
*August 1, 2012*

**health**

lol^
*August 1, 2012*

**Maths Investments**

A woman has a total of $9,000 to invest. She invests part of the money in an account that pays 8% per year and the rest in an account that pays 11% per year. If the interest earned in the first year is $840, how much did she invest in each account?
*June 26, 2012*

**Algebra 2 **

A data set has the following point: (1,8)(2,7)(3,5) The slope of the linear regression line is -1.5 Find the y-intercept of the linear regression.
*May 22, 2012*

**math **

you need 5 foot long board into pieces that are 3/4 of a foot long. How many pieces can we cut? what length of the board will be left?
*May 17, 2012*

**physics**

What is the angular momentum of a 0.200- ball rotating on the end of a thin string in a circle of radius 1.45 at an angular speed of 13.0 ?
*May 6, 2012*

**Maths**

STOP CHEATING EMAD!!!
*May 3, 2012*

**College Chemistry**

12
*March 26, 2012*

**Scottsdale c c **

A baseball has a velocity of 44.0 m/s, directed horizontally, as it is released by a pitcher. The ball’s velocity 0.0100 s before it is released is 42.0 m/s, directed 3.00 degrees above the horizontal. Estimate the ball’s instantaneous acceleration just before it is ...
*February 27, 2012*

**scottsdale CC**

At 0.100 s intervals, the x coordinates of a particle are 0, 1.01 cm, 2.05 cm, and 3.12 cm. Estimate the instantaneous velocity and acceleration at t = 0.
*February 21, 2012*

**scottsdale CC**

Let s ct 3 , where c 1.0 m/s 3 . Compute the average speed over the time intervals t1 1.0 10 1 s, t2 1.0 10 2 s, and t3 1.0 10 3 s, with all time intervals starting at the time t 1.0000 s. What is the instantaneous speed at t 1.0000 s
*February 20, 2012*

**scottsdale CC**

During a 5.00 s interval, a particle’s coordinates change from x =10.0 m, y =5.00 m to x =30.0 m, y = 5.00 m. Assuming the particle’s velocity is constant, what will its coordinates be at the end of the next 5.00 s interval?
*February 20, 2012*

**scottsdale CC**

During a 5.00 s interval, a particle’s coordinates change from x =10.0 m, y =5.00 m to x =30.0 m, y = 5.00 m. Assuming the particle’s velocity is constant, what will its coordinates be at the end of the next 5.00 s interval?
*February 20, 2012*

**scottsdale CC**

A car travels around a curve at a constant speed of 80.0 km/h. What is the car’s instantaneous velocity at an instant when it is headed west
*February 20, 2012*

**math**

Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next foot)?
*February 7, 2012*

**mechanics**

An object (point mass) is projected up an inclined plane from the bottom with an initial speed of 5.0 m/s. The plane is 0.75 m high and the coefficient of kinetic friction between the object and the plane is 0.25. For what angle of inclination would the mass just come to rest ...
*February 6, 2012*

**physical science**

C. 100kg, 166N Mass remains constant but weight would be changed because of the gravity. The equation for force is F=ma F=100*1.66 F=166N
*December 2, 2011*

**arrays an expanded algorithm**

I need an example to help my son like 23x17
*December 1, 2011*

**chemistry**

What volume of H2 (g) (at 750. mm Hg and 25 C) is produced from 50.0 mL of 0.214 M H2SO4 and 0.300 g of Al?
*November 29, 2011*

**Math**

I don't get your answer and I need the answer for tomorrow. pleaseeeeeeeee
*October 9, 2011*

**Math**

5 years,21days,4hours,32min,17sec - 2 years,93days,7hours,47min,24sec -------------------------------------
*October 9, 2011*

**Math please help me**

thank you very much for your help
*October 9, 2011*

**Math please help me**

I don't get it. Please could you help me??????????
*October 9, 2011*

**Math please help me**

5 years,21days,4hours,32min,17sec - 2 years,93days,7hours,47min,24sec _______________________________________
*October 9, 2011*

**Physics**

A student places her 442 g physics book on a frictionless table. She pushes the book against a spring, compressing the spring by 4.44 cm, then releases the book. What is the book's speed as it slides away? The spring constant is 1102 N/m.
*September 29, 2011*

**geometry**

20
*September 26, 2011*

**physics**

0.012m/s2
*September 25, 2011*

**Algebra2**

Can someone EXPLAIN to me how to solve for x. Please don't just give me an answer because I won't learn anything from that. sq root of (x+6) = x
*August 14, 2011*

**math**

Show that f(-x) = -f(x)
*July 4, 2011*

**math**

does the function f(q)=(q(1-q))^1/2 satisfy the hypothesis of the mean value theorem at the interval [-1,5]
*June 17, 2011*

**Math**

What are the steps to getting the tan of 345degree, without the use of a calculator?
*June 3, 2011*

**MGT 330**

According to Fiedler, the extent to which the work of subordinates is clear so that they know what to do and how to do it is known as
*May 1, 2011*

**MGT 330**

According to a recent research study, approximately what percentage of organizations which use "self-managed work teams" base the pay of work team members, at least in part, on the team's performance level
*May 1, 2011*

**MGT 330**

A worker in an automobile assembly line who chooses this type of work because of the job security it entails is said to be
*May 1, 2011*

**math**

If a pro basketball player has a vertical leap of about 35 inches, what is his hang time? Use the hang-time function V = 48T²
*April 24, 2011*

**math**

My first math question was written incorrectly. Find the vertex, the line of symmetry, and the maximum or minimum value of f(x). Graph the function. F(x) = 1/5 (x + 9)² +3
*April 24, 2011*

**math**

Find the vertex, the line of symmetry, and the maximum or minimum value of f(x). Graph the function. F(x) = 1/8 (x + 9)² +3
*April 24, 2011*

**Equivalent art**

What is the the 3 equivalent fractions of 10/24
*March 30, 2011*

**Advanced Algebra**

Sam and David are among 5 students who have a chance to win a free airline ticket to San Diego. 2 students from the group will be selected at random to win a ticket. What is the possibility that the 2 students selected will be Sam and David?
*March 28, 2011*

**chemistry**

A reaction mixture is in a 5.4 L flask at 25 oC initially contains only 7.64 grams of acetic acid. (CH3COOH). Set up your I.C.E. table and use it to answer the following questions. HINT: You will need to look up the Ka for this equilibrium reaction. CH3COOH(aq) ¡ê ...
*March 1, 2011*

**math**

It is $385
*February 24, 2011*

**Advanced Algebra**

Can you please explain to me how I can solve these problems? (3^ square root of3) ^square root of 3 (x^ square root of 2) ^square root of 7 5^(2)(square root of 3) • 5^(4)(square root of 3) x^(3)(pi) / x^(pi)
*January 30, 2011*

**math**

Find the x-intercept 3x-5y=14y+9x I think y=0 but 3x=9x does not make sense to me. Please help me. Thank you.
*January 26, 2011*

**4th grade**

how can you show without multiplying that 4/9 is greater then 0.4
*January 20, 2011*

**Chemistry**

912 mm Hg to standard atmosphere
*January 19, 2011*

**chemestry**

given 43 moles of KCl how much HNO3 is needed to complet the reaction
*December 8, 2010*

**chemistry**

Explain jhow you would make 400 milliliters of an 18% solution from dry glucose and distilled water.
*December 7, 2010*

**8th grade science**

Peggy is runnig around the school track at a constant speed. The track has two straight stretches on the sides and two curved stretches at either end. Where on the track does Peggy experience balanced and unbalanced forces? Explain your answer.
*November 11, 2010*

**Science**

Peggy is runnig around the school track at a constant speed. The track has two straight stretches on the sides and two curved stretches at either end. Where on the track does Peggy experience balanced and unbalanced forces? Explain your answer.
*November 11, 2010*

**8th grade science**

Peggy is runnig around the school track at a constant speed. The track has two straight stretches on the sides and two curved stretches at either end. Where on the track does Peggy experience balanced and unbalanced forces? Explain your answer.
*November 11, 2010*

**8th grade**

two children are fighting over a toy pull on it from opposite sides .the result is stand off.explain this term of the net force
*November 7, 2010*

**6th grade fractions**

x.dgbksdfngksfmgkonwrkd
*November 6, 2010*

**physics**

Hi Chris
*November 2, 2010*

**physics**

a body is thrown downward with an initial speed of 20.0 m/s on earth. what is the acceleration of the object
*November 2, 2010*

**math**

How do you find the rule of the sequence if the 2nd term is 40057.07 and the 5th term is 19192.53
*October 25, 2010*

**MAth**

Make a tally chart for the numbers of students in the third-,fourth-,and fifth-grade classes:26,25,27,27,26,28,27.
*October 12, 2010*

**Business Law**

What are the elements of a contract under common law? Explain what gaps in a contract can be filled by Article 2 of the UCC? What is the difference between a shipment and a destination contract in Article 2 of the UCC? Jason shipped a truckload of peaches from his orchard to ...
*September 27, 2010*

**Business Law**

What are the elements of a contract under common law? Explain what gaps in a contract can be filled by Article 2 of the UCC? What is the difference between a shipment and a destination contract in Article 2 of the UCC? Jason shipped a truckload of peaches from his orchard to ...
*September 27, 2010*

**Math**

what is the like term method ?
*August 30, 2010*

**mgt330**

Intrinsically Motivated
*August 29, 2010*

**chemistry**

If we suppose that Kw = 1.0x10^-14 at 25C, would it be larger or smaller at 100C? What is the value of K for the reaction 8H + 8OH = 8H2O at 25C? Would this value be smaller, or larger, at 100C?
*July 6, 2010*

**chemistry**

Why is it that biochemists often remember the pKa of weak acids, rather than Ka?
*July 6, 2010*

**11th grade science**

Earth is 1.5 x 10ü km from the sun and Pluto averages 5.9 x 10 km from the sun during its rather strange orbit. How many years does it take Pluto to revolve around the sun?
*May 10, 2010*

**Grammar**

God created the heavens and the earth. What are the verbs in this phrase
*May 7, 2010*

**Earth Science**

Select all of the answers that apply. A map _____.
*April 7, 2010*

**5th grade**

partial quotients to divide 9 306
*April 5, 2010*

**Algebra 1**

What is the advantage of buying a magnetic bulletin bored
*March 9, 2010*

**9th grade**

To find a sales tax of 6% on a purchase of $90.00 using the proportion method you would write the following: 6/100 = ST/$90 The calculations in this problem would give you the following: (ST)= $540.00
*March 2, 2010*

**Computer**

START If 'psuedocode' = hard Stop ENDIF
*February 13, 2010*

**alg math 116**

9x +3y=-51,-5x +y=39 solve using substitution method
*February 1, 2010*

**maath 116**

3. The linear equation represents an estimate of the average cost of gas for year x starting in 1997. The year 1997 would be represented by x = 1, for example, as it is the first year in the study. Similarly, 2005 would be year 9, or x = 9. a) What year would be represented by...
*January 20, 2010*

**math 116 appendix d**

y=-1/2x-4 Complete the table for this equation. x y (x,y) -1 -2 -4 2 8
*January 17, 2010*

**math 116 appendix d**

b) Suppose you want to cover the backyard with decorative rock and plant some trees as the first phase of the project. You need 30 tons of rock to cover the area. If each ton cost $60 and each tree is $84, what is the maximum number of trees you can buy with a budget for rock ...
*January 17, 2010*

**Physics**

A satillite is orbiting the earth at a distance of 1.00X10^3 km above the surface of the earth. What is it's speed?
*November 15, 2009*

**Physics**

(a)Compute the value of G at a point in space that is 7.0X10^6 m from the center of the earth. What will be the value of G at a point with a radius twice that in (a)?
*November 15, 2009*

**Physics**

At what speed must a satellite of a mass M be launched horizontally at the surface of the earth if it's orbit is to be a circle just grazing the highest mountains?( assume no air resistance). How much time would elapse between successive passes of this imaginary satillite?
*November 15, 2009*

**physics**

A car weighing 9800 N travels at 30 m/s. What braking force (to the nearest whole number) brings it to rest in 100 m???? THNX BOBPURSLeY
*November 9, 2009*

**Physics**

A freight elevator has a mass of 240 kg. Find the tension in the cables (to the nearest whole number) when it ascends with an acceleration of 4 m/s2.
*November 9, 2009*

**physics**

A 18 kg object and a 6 kg object are hanging over a frictionless pulley. What is the acceleration of the system to the nearest tenth?
*November 9, 2009*

**geometry**

What's another way to write 8 3/4?
*November 8, 2009*

**Math**

The systolic blood pressures of the patients at a hospital are normally distributed with a mean of 136 mm Hg and a standard deviation of 13.4 mm Hg. Find the two blood pressures having these properties: the mean is midway between them and 90% of all blood pressures are between...
*October 11, 2009*

**Math**

If the odds against an event A are 15 to 1, what is the probability associated with event A occurring?
*October 11, 2009*

**physics**

A person travels by car from one city to another with different constant speeds between pair of cities. She drives for 38.6 min at 87.2 km/h, 10.3 min at 107.9 km/h, and 45.6 min at 45.7 km/h, and spends 17.9 min eating lunch and buying gas. Find the distance between the ...
*October 4, 2009*

**Pre-Algebra**

1 the whirl series
*September 15, 2009*

**Physics**

6.0 X 10^3 kg
*September 9, 2009*