# Posts by LIndsey

Total # Posts: 423

math
the bulletin board in Shain's classroom is 3 1/4 feet by 4 1/2 feet. what is the area of the bulletin board? is this right? 24 1/2 ?

Math
Thank you Ms. Sue!!!

Math
Danielle spend 2/5 of her paycheck on bills. Her water bill was 1/6 of what she spent on bills. What part of her paycheck went to her water bill? Is this right? 1/6 x 2/5 = 2/30 = 1/15? Thanks.

math
simply the following (-6*4x^2*y^3/27xy^4)^1/3

math
how many pounds of tea worth \$1.54 a pound should be mixed with tea worth \$1.70 a pound to make 40 pounds of blended tea to sell at \$1.60 a pound?

Government
What are 10 ways to increase voter turnout in the United States? If possible, rovide justification for each one because some of the turnouts are unclear...

Algebra
Your test scores in one class are 81 and 87. What possible scores can you earn on your next test to have a test average between 84 and 89, inclusive?

math
write all the possible odd 5-digit numbers using the digits 1,4,7,8 and 0, with the 1 in the ten thousands places.

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?

Math
My mom would always write the numbers on our fingers and we would count almost everything we saw. My brother is 6 and in first grade, he can count to 100, so I think it worked really well. Hopefully this was helpful! hope she learns to count!

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. ...

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 ...

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 ...

math
if a leaky faucet drips eight ounces of water per minute how many gallons per day is that

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?

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.) ...

geometry
still confused

geometry
x^2+2xy-15y^2 is this factorable?

geometry
thanks

geometry
how to factor it

geometry
9x^2-25 ? so lost.

geometry
16n^2-9 ?

geometry
also how do you factor 16n^2-9 ?

geometry
how do you factor x^2-100 ?

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?

Algebra
Add or Subtract 1.) 3 7/12 + (-2 4/5)

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 ...

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?

Algebra
Thanks.

Algebra
Cars Dropped Cars Picked Off Up Monday 8 4 Tuesday 11 6 Wednesday 9 12 Thursday 14 9 Friday 7 6

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.

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?

geometry
Remove the radical from the denominator below. Do not simplify the answer. -2 sqrt15 / (6- sqrt13)

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

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)

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 ...

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

Algebra 1
Thank you! but i do have a question. would it be raised to the -12 power? in #2

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

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

Algebra 1
what is the solution of the following system of equations? 1.) 5x + 7y =3 2x = -3y +1

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

Algebra 1
Thanks!

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

Algebra 1
Thanks again! :)

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

Algebra 1
Thanks!

Algebra 1
solve each system by substitution. check your answers 4y +3 = 3y +x and 2x +4y =18

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.

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.

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, ...

Physical Science
yes I have. it doesn't show up the scientific term

Physical Science
Identify these functions galvanometer step-up transformer electric motor generator electromagnet step-down transformer commutator

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

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)

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

Algebra 1
What is the value of the expression (-7) (3)- (5)(-3)?

Algebra 1
Thanks!

Algebra 1
It doesn't say how many.

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.

Algebra 1
simplify (x^2 +6) - (3x^2 - 2x -5)

Physical Science
Thanks guys.

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....

Pysical Science
Nvm it's matter

Pysical Science
The transfer of thermal energy by convention and conduction both require what? Unscramble atterm

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.

square feet math
If the lenght is 14 ft. and the area is 70sq. ft.what is the width?

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 ...

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

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 ...

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 ...

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.

Chemisty
Need Boys #'s

Algebra
I got it after I post it. Thanks again.

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?

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?

Physical Science
Thanks!

Physical Science
Explain the role friction plays in the conservation of energy.

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?

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

Math
4/25 = 16/100 = 16%

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 ...

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

Sam's credit card balance is less than -\$36. Does Sam owe more or less than \$36? The answer he owe more than \$36.

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...

Absolute value

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...

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...

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?

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

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?

Math 2
Deez nutzzz

Explain how you know 6/6 and 1 are equivalent?

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 ...

language arts
Thank you it is!!

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

Science
I just had the same question, and the 1st one is .05 cm, and the second is .0005 cm.

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?

Physics Help
Find components of vector -2r

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