Friday

May 27, 2016
Total # Posts: 411

**physics**

In preparing to shoot an arrow, an archer pulls a bowstring back 0.49 m by exerting a force that increases uniformly from 0 to 277 N. What is the equivalent spring constant of the bow?
*March 18, 2016*

**algebra**

we have to have three equations. as this is a system of equations and inequalities problem. I have this so far: x=# of 1's y=# of 5's z=# 20's and I have the following equations. 1x+5y+20z=237 x+y+z=34 and I need another equation. but I am having trouble doing it. ...
*February 13, 2016*

**algebra**

A cashier has a total of 34 bills, made up of ones, fives, and twenties. The number of fives is one less than the number of twenties. The total value of the money is $237. How many of each denomination of bills are there? (Hint: Let x = the number of ones, y = the number of ...
*February 13, 2016*

**Math**

A health inspector wants to check compliance with a new city ordinance on meat storage. Since he can only inspect 10 of the 33 stores, he chooses to do a stratified random sample that consists of all 3 of the large chain stores, 4 of the 10 smaller chain stores, and 3 of the ...
*February 12, 2016*

**math**

if a leaky faucet drips eight ounces of water per minute how many gallons per day is that
*January 16, 2016*

**algebra 1**

The Fun Guys game rental store charges an annual fee of $20 plus $6.50 per game rented. The Game Bank charges an annual fee of $50 plus $3.50 per game. For how many game rentals will the cost be the same at both stores? What is that cost?
*January 15, 2016*

**Physics **

Using the following equations as a guide (some may be used, some may not-choose wisely) y1 OR x1= initial position x2 or Y2 =final position V1 or Vi= Initial velocity V2 or Vf- Final velocity a= Acceleration T- time Equation 1.) x2=x1 +vt Equation 2.) v2= v1+at Equation 3.) ...
*January 6, 2016*

**geometry**

still confused
*November 20, 2015*

**geometry**

x^2+2xy-15y^2 is this factorable?
*November 20, 2015*

**geometry**

thanks
*November 19, 2015*

**geometry**

how to factor it
*November 19, 2015*

**geometry**

9x^2-25 ? so lost.
*November 19, 2015*

**geometry**

16n^2-9 ?
*November 19, 2015*

**geometry**

also how do you factor 16n^2-9 ?
*November 19, 2015*

**geometry**

how do you factor x^2-100 ?
*November 19, 2015*

**Physics**

An explorer is stranded in the desert. A rescue service has located him using GPS, but can reach him only by plane. A supply package is kicked out the door of the plane while while it is flying at a speed of 61.7 m/s at an altitude of 35 m. Does the package fall straight down?
*October 11, 2015*

**Algebra**

Add or Subtract 1.) 3 7/12 + (-2 4/5)
*October 6, 2015*

**I need help answering this question **

On Aug 14th, One of our Partner's ( Compuville ) cash book showed a debit balance of $4,000.00. His bank statement showed a balance of $4,270.00. On comparison the following were found: * check issued amounting to $2,500.00 has not been cashed * The bank rejected checks ...
*October 6, 2015*

**Physics**

A boat travels across a wide river. if the boat can travel at a speed of 25 mph and its pilot heads in a direction of 30 degrees, while the current's velocity is 5.1 mph at a heading of 270 degrees, what will the final velocity of the boat be?
*September 21, 2015*

**Algebra**

Thanks.
*August 31, 2015*

**Algebra**

Cars Dropped Cars Picked Off Up Monday 8 4 Tuesday 11 6 Wednesday 9 12 Thursday 14 9 Friday 7 6
*August 31, 2015*

**Algebra**

on Monday morning, a mechanic has no cars in her shop. the table at right shows the number of cars dropped off and picked up each day. Find the total number of cars left in her shop on Friday.
*August 31, 2015*

**chemistry**

39.3 grams of c6h6 are allowed to react with 108.3 grams of o2. How much co2 will be produced by this reaction?
*May 25, 2015*

**geometry**

Remove the radical from the denominator below. Do not simplify the answer. -2 sqrt15 / (6- sqrt13)
*April 21, 2015*

**Algebra 1**

Identify the initial amount a and the decay factor b in each exponential function. 1.) y= 0.1* 0.9^x
*April 8, 2015*

**Physical Science**

Calculate: In the following equation, 417.96 g of Bi (bismuth) reacts completely with 200 g of F (fluorine.) How many grams of BiF (little three below F) are formed? 2 Bi + 3 F (little 2 under F) ---> 2 BiF (little three below F)
*March 25, 2015*

**Physical Science**

I have no idea how to do this, and I'm not sure what the formula is. Here's my question: In space, there is almost no air, so there is virtually no friction. If an astronaut throws a ball in space with an initial velocity of 3.0 meters per second to the west, what ...
*March 24, 2015*

**Algebra 1**

Simplify each expression. 1.) (b^ 1/6)^3 b^1/6 2.) (2x^-3)^2 (0.2x)^2 3.) (3^7)^2 (3^-4)^3
*March 23, 2015*

**Algebra 1**

Thank you! but i do have a question. would it be raised to the -12 power? in #2
*March 23, 2015*

**Algebra 1**

Simplify. Write each answer in scientific notation. 1.) (3 * 10^5)^2 2.) (3.5 * 10^ -4) ^3
*March 23, 2015*

**Algebra 1**

Solve each system using substitution. tell whether the system has one solution, infinitely many solutions, or no Solution. 1.) y=2x -1 2x +2y= 22
*March 9, 2015*

**Algebra 1**

what is the solution of the following system of equations? 1.) 5x + 7y =3 2x = -3y +1
*February 26, 2015*

**Algebra 1**

solve each system using elimination. 1.) 6x - 3y =15 7x + 14y =10 Tell whether the system has one solution, infinitely many solutions, or no solution. 1.) 9x +8y =15 9x +8y =30 2.) 5x - 3y =10 10x + 6y = 20
*February 25, 2015*

**Algebra 1**

Thanks!
*February 25, 2015*

**Algebra 1**

Solve each system using elimination. 1.) 5x - y=0 3x + y=24 2.) 3x + 3y =27 x - 3y =-11 3.) 6x +4y =42 -3x + 3y =-6
*February 25, 2015*

**Algebra 1**

Thanks again! :)
*February 24, 2015*

**Algebra 1 **

Tell whether the system has one solution, infinitely many solutions, or no solution. 1.) y= 1/2x +3 2y -x =6 2.) x= -7y + 34 x+ 7y =32
*February 24, 2015*

**Algebra 1**

Thanks!
*February 24, 2015*

**Algebra 1**

solve each system by substitution. check your answers 4y +3 = 3y +x and 2x +4y =18
*February 24, 2015*

**chemistry **

While in Europe, if you drive 125km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 26.0mi/gal ? Assume that 1euro=1.26dollars.
*February 13, 2015*

**chemistry **

In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 38.0mi/gal , how many liters of gasoline would you need to buy to complete a 142-km trip in Europe? Use the following conversions: 1km=0.6214mi and 1gal=3.78L.
*February 13, 2015*

**Algebra 1**

students measured the diameters and circumferences of the tops of a variety of cylinders. Below are the data that they collected. estimate the diameter of a cylinder with circumference 22cm. Cylinder Tops Diameter(cm) 3,3,5,6,8,8,9.5, 10, 10, 12 Circumference(cm) 9.3,9.5, 16, ...
*February 11, 2015*

**Physical Science**

yes I have. it doesn't show up the scientific term
*February 3, 2015*

**Physical Science**

Identify these functions galvanometer step-up transformer electric motor generator electromagnet step-down transformer commutator
*February 3, 2015*

**physics **

a child is twirling a 0.0120 kg ball on a string in a horizontal circle whose radius is 0.100m. The ball travels once around the circle in 0.500s. Determine the centripetal force acting on the ball
*December 17, 2014*

**Algebra 1**

Which ordered pai is a solution of y= -6x -7? A.(0.5,-4) B.(2,-19) C.(-2,-5) D. (3,11)
*December 16, 2014*

**Algebra**

Which property is illustrated by 45 + 19 = 19 + 45? A. Commutative property of addition B. Identity property of Addition C. Associative property of addition D. zero property of addition
*December 16, 2014*

**Algebra 1**

What is the value of the expression (-7) (3)- (5)(-3)?
*December 16, 2014*

**Algebra 1**

Thanks!
*December 16, 2014*

**Algebra 1**

It doesn't say how many.
*December 16, 2014*

**Algebra 1**

jack is taking his family to the fair. he plans to take $5 for each admission ticket plus $35 for food. Write an equation that models the amount of money jack takes to the fair.
*December 16, 2014*

**Algebra 1**

simplify (x^2 +6) - (3x^2 - 2x -5)
*December 16, 2014*

**Physical Science**

Thanks guys.
*December 10, 2014*

**Physical Science**

Fill in the blanks using the correct term from the list below. Active Combustion free heating systems passive heat pump thermal energy stroke 1. A house with large windows on its south side and few windows on its other sides probably uses a(n) Blank solar heating system. 2....
*December 10, 2014*

**Pysical Science**

Nvm it's matter
*December 10, 2014*

**Pysical Science**

The transfer of thermal energy by convention and conduction both require what? Unscramble atterm
*December 10, 2014*

**physics**

if a 175 g stationary hockey puck is struck with a force of 405 N east through a displacement of 245 mm east while in contact with a stick, determine the velocity of the puck as it leaves the stick.
*December 10, 2014*

**square feet math**

If the lenght is 14 ft. and the area is 70sq. ft.what is the width?
*December 8, 2014*

**Math**

At a swim meet, a parent is videotaping his son from a seat in the stands that is 20 meters past the starting line and 8 meters away from his son's lane. Let x represent the distance the son has swum. a. Write x as a function of (theta). b. At what angle does the parent ...
*December 7, 2014*

**Math **

Let x,y, and z be nonzero real numbers. Find all possible values of x/|x|+y/|y|+z/|z|+xyz/|xyx|.
*December 4, 2014*

**Chemistry**

Please also, help me set up this problem. Acetylene, C2H2, can be converted to ethane, C2H6, by a process known as hydrogenation. The reaction is C2H2(g)+2H2(g)⇌C2H6(g). Given the following data at standard conditions (all pressures equal to 1 atm and the common ...
*November 16, 2014*

**Chemistry**

Help me set up this problem. I have been looking at a few examples of similar problems and I keep getting the wrong answers. I'm getting really confused. Q: The standard free energy change ΔG∘ and the equilibrium constant K for a reaction can be related by the ...
*November 16, 2014*

**Physical science**

Think Critically. The mechanical advantage of a machine is less than one. Compare the distances over which the input and output forces are applied.
*October 29, 2014*

**Chemisty**

Need Boys #'s
*October 27, 2014*

**Algebra**

I got it after I post it. Thanks again.
*October 27, 2014*

**Algebra**

A 30-pack of blank CDs costs $9.50. A 50-pack of blank CDs costs $13. How can you tell which is the better buy?
*October 27, 2014*

**Physical Science**

why is the kinetic energy of the lumber higher on the truck during the delivery than when it drops from the carpenter's shoulder?
*October 22, 2014*

**Physical Science**

Thanks!
*October 22, 2014*

**Physical Science**

Explain the role friction plays in the conservation of energy.
*October 22, 2014*

**algebra**

A beauty salon buys bottles of styling gel for $4.50 per bottle and marks up the price by 40%. For what price does the salon sell each bottle?
*October 21, 2014*

**math**

the bag decreased one third, so its weight decreases the same, so: 3/4pound - 3/4 pound*1/3 =3/4pound - 1/4 pound =2/4 pound =1/2 pound
*October 21, 2014*

**Math**

4/25 = 16/100 = 16%
*October 21, 2014*

**Principles of Chemistry**

A certain amount of chlorine gas was placed inside a cylinder with a movable piston at one end. The initial volume was 3.00 L and the initial pressure of chlorine was 1.30atm . The piston was pushed down to change the volume to 1.00 L. Calculate the final pressure of the gas ...
*October 6, 2014*

**Solve. W rite each answer in simplest form.**

6/12 = 1/2
*September 16, 2014*

**Solve. W rite each answer in simplest form.**

Erin buys a bag of peanuts that weighs 3/4 of a pound. Later that week, the bag is 2/3 full. How much does the bag of peanuts weigh now? Show your work
*September 16, 2014*

**SIXTH GRADE MATH**

Sam's credit card balance is less than -$36. Does Sam owe more or less than $36? The answer he owe more than $36.
*September 2, 2014*

**sixth grade math problem**

Bertrand collects movie posters. The number of movie posters in his collection changes each month as he buys and sells posters. The table show how many posters he brought or sold in the given months. January sold 20, February bought 12, March bought 22, April sold 28. 1. Which...
*September 2, 2014*

**Absolute value**

can someone please help me with these questions?
*September 2, 2014*

**Absolute value**

Bertrand collects movie posters. The number of movie posters in his collection changes each month as he buys and sells posters. The table show how many posters he brought or sold in the given months. January sold 20, February bought 12, March bought 22, April sold 28. 1. Which...
*September 2, 2014*

**civics**

Which of the following describes a way geographic features influenced how north american countries were settled ? A. populations were greatest in inland areas where climates were more moderate. B.people settled along the borders between countries to make trade easier. C.people...
*June 4, 2014*

**math**

The test Keyshawn's class took finished at 10:30 A.M. The first part of the test took 30 minutes. There was a 15 minute break. The second part of the test also took 30 minutes. At what time did the test start?
*May 19, 2014*

**3rd grade math**

The test Keyshawn's class took finished at 10:00 A.M. The first part of the test took 30 minutes. There was a 15 minute break. The second part of the test also took 30 minutes. At what time did the test start
*May 19, 2014*

**3rd grade math**

Will arrived at his mother's office at 3 P.M. It took him 30 minutes to walk from his home to the mall. He was in the mall for 45 minutes. It then took him 15 minutes to walk to his mother's office. At what time did Will leave home?
*May 19, 2014*

**Math 2**

Deez nutzzz
*May 2, 2014*

**3rd grade math**

Explain how you know 6/6 and 1 are equivalent?
*April 8, 2014*

**probability **

a teacher on her way to work passes through 3 stoplights each morning. the distances between the stop lights are great and the lights operate independently of each other. if the probability of the red lights are .4,.8 and .6 for each light, what is the probability to the ...
*February 25, 2014*

**language arts**

Thank you it is!!
*February 19, 2014*

**language arts**

which of the sentences below is punctuated correctly? A.I opened the door and my cat ran outside. B.I opened the door, and my cat ran outside. C.I opened the door, my cat ran outside. I think its B
*February 19, 2014*

**science**

How often would a restriction enzyme such as Not I, which has 8 nucleotides in its recognition sites 5’-GCGGCCGC-3’, cleave DNA on average? Would it cleave a species DNA more or less often if the DNA from that species were 70% A-T rich?
*February 2, 2014*

**Physics Help**

Find components of vector -2r
*February 1, 2014*

**science**

How might the formation of Pangaea have led to mass extinctions at the end of the Permian period, about 250 million years ago?
*January 21, 2014*

**Please i needd an answer asap!!!**

Nevermind i got it. Thank you so much:)
*January 8, 2014*

**Please i needd an answer asap!!!**

A, right?
*January 8, 2014*

**Please i needd an answer asap!!!**

Ok thank you, so for number two its D? because i looked up the meaning of the word simulation and none of it matched with the the answers nor was it close
*January 8, 2014*

**Please i needd an answer asap!!!**

@Ms.Sue
*January 8, 2014*

**Please i needd an answer asap!!!**

I need a little help Ms. Sue. But for the first one i think its A For the second one C Third C
*January 8, 2014*

**Please i needd an answer asap!!!**

I give medals and 'best answer' :) I need help asap! Which of the following is one way to assess whether or not a learning game is effective? a. Being able to win the game b. doing a quiz before and after the game to see what you have learned c. Making it difficult to ...
*January 8, 2014*

**language art 8**

Please help me, i really need to get this. the only question/essay im stuck on. Answer the following questions about the essay "Escaping." Give an example of one internal and one external conflict from the selection (5 points). I need your help!
*December 9, 2013*

**physics**

A barefoot ﬁeld-goal kicker imparts a speed of 44 m/s to a football initially at rest. If the football has a mass of 0.49 kg and the time of contact with the ball is 0.028 s, what is the magnitude of the force exerted by the ball on the kicker’s foot?
*December 6, 2013*

**A/P Calculus**

A Cyclist is riding on a path whose elevation is modeled by the function f(x) = 0.08(16x-x^2) where x and f(x) are measured in miles. Find the rate of change of elecation when x=4. Would this be 0.64? dx/dt would be 1.28 - 0.16x and then plug in four?
*November 9, 2013*