Sunday

December 4, 2016
Total # Posts: 717

**Science**

does the air in our atmosphere contains elements that we breathe with every breath

*August 24, 2015*

**math**

-2 + y = 11 solve for y would y be 13?

*August 24, 2015*

**Math**

There are 12 pieces of fruit in a bowl.7 are apples 2 are peaches.What is the probability that a randomly selected piece of fruit will not be an apple or a peach?Justify your answer.

*August 19, 2015*

**precalc**

A projectile is launched from a platform 20 feet high with an initial velocity of 48 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t^2 + 48t + 20 feet. (a) How many seconds after launch does the projectile attain maximum ...

*July 12, 2015*

**Algebra**

A ball is thrown from the top of a building. It's height (y) in feet at any given time (x) in seconds is y=-16x^2+240. What is the maximum height of the ball?

*June 22, 2015*

**Social Studies**

Describe the caste system and it’s the different levels.

*May 15, 2015*

**Social Studies**

South Asia’s flood plains have attracted a great deal of people because of their _______________. rich soil?

*May 15, 2015*

**Social Studies**

Describe the causes and effects of pollution on the Ganges River. What role does population play on this pollution?

*May 15, 2015*

**science**

is a squirrel a animal species

*May 15, 2015*

**Math**

A printing company makes plastic banners 15 ft long by 6 feet wide. How many square meters is the banner? Use 1 foot=0.305meters

*April 27, 2015*

**math**

I think its D, but i also think its A.

*April 9, 2015*

**math**

I got B by using a proportion.

*April 9, 2015*

**math**

It would be C right???

*April 9, 2015*

**math**

Elisa surveyed people in her neighborhood about whether they would like to have a swimming pool in their community park. Of those who responded, 65% were in favor of having a swimming pool. Based on these results, which statement could be true? A. Elisa surveyed 10 people, 6 ...

*April 9, 2015*

**health**

I know this is late but it is the Integumentary System

*March 31, 2015*

**math**

thank you. and the answer is 471....

*March 26, 2015*

**math**

The radius is 5 inches. sorry I just realized I forgot that....

*March 26, 2015*

**math**

what is the volume of a cylinder with a radius of inches and a height of 6 inches ?

*March 26, 2015*

**Math**

Thank you.

*March 26, 2015*

**Math**

A box of Cereal X contains 36 ounces and costs $ 4.99. A box of Cereal Z contains 30 ounces and costs $ 4.50. Which cereal is the better buy ?

*March 26, 2015*

**math**

okay I got it now. thank you.

*March 25, 2015*

**math**

so you say to put 7 in for x ?

*March 25, 2015*

**math**

the expression gives the area of a rectangle (x-4)(2x-3) what is the value of the equation when x=7 ?

*March 25, 2015*

**MATH**

Debs discount store is giving a 30% discount on everything in the store. what would you pay for the jacket regularly priced at $59?

*March 25, 2015*

**Math**

Trevor went to an amusement park where ride tickets cost $2.50 each. He plans to spend $15.00 on refreshments while at the park. He has a total of $65.00. Write an equation to find the number of ride tickets he can buy.

*March 25, 2015*

**math**

aaron made a scalw drawing of his bedroom he used the scale 1/4 inch = 1 foot the length of his bedroom in the drawing is 5 inches what is the actual length of his room ?

*March 23, 2015*

**language arts**

2. An example of literal description in the poem is (1 point)the sun brightening valleys. an audience being moved by a speech. the words of the president being relevant for a long time. shadows falling over the land.

*March 19, 2015*

**Science**

Thanks Haylee, I got a 100% You are awesome! :3

*March 19, 2015*

**Psychology **

Martina heard the noise, but could not understand what was being said. Perhaps it was simply the humming of the machines that she heard? She was uncertain whether she should move toward or away from the sound. Martina is having difficulty with? A. Sensation B. Perception C. ...

*March 7, 2015*

**Social Studies**

Utopia

*February 26, 2015*

**Algebra 2**

Solve the equation : 8^2x-1 = 16^x+1 i know you have to log both sides log8^2x-1 = log16^x+1 and then you use the exponential rule 2x-1 log8 = x+1 log16 but then i don't know what to do...

*February 22, 2015*

**Algebra 2**

sorry its x^3-3x....

*February 22, 2015*

** Math**

In the formula d = rt, the time t varies inversely with the rate r. A student running at 5 miles per hour runs one lap around the school campus in 8 minutes. If a second student takes 10 minutes to run one lap around the school, how fast is she running?

*February 19, 2015*

**math**

im pretty sure the answer is 21 because i have had this same question forever and today i finnaly figured it out

*February 19, 2015*

**gifted math**

24 pencils in a box each student in the class gets 6. There are no pencils left over. How many students are in the class? write an equation to represent the situation.

*January 26, 2015*

**ART Check**

1. B 2. D

*January 22, 2015*

**Physics**

mrubber stopper = 0.07Kg mmetal washers = 0.196Kg radius = 1.0m total time = 12 seconds # of revolutions = 10 revolutions With this data, calculate the centripetal Force (Fc) (to 2 decimals) of the rubber stopper in its "orbit".

*January 20, 2015*

**Physics**

mass rubber stopper = 0.07Kg mass metal washers = 0.196Kg radius= 1.0m total time = 12 seconds # of revolutions = 10 revolutions With this data, calculate the Period (T) of the rubber stopper in its "orbit".

*January 20, 2015*

**Physics**

A 500 kg car experiences a frictional force of 3080 N while turning, if the car is traveling around a turn of radius 17 m what is the velocity of the car?

*January 20, 2015*

**Physics**

A motorcycle has a mass of 250kg. It goes around a 13.7 m radius turn at 96.5 km/hr. What is the centripetal force? a. 2.95x10^3 N b. 4.31x10^4N c. 1.31x10^4 N d. 719N

*January 20, 2015*

**Physics**

A child swings from a rope of length L. If she starts her swing with the rope horizontal what is her acceleration at the bottom of the swing? a. 2gL^2 b. g/2 c. g d. 2g/l e. 2g

*January 20, 2015*

**Physics**

Abby is swinging a ball on a string in a circle with a constant tension. Which of the following quantities is constant? a. acceleration b. speed c. none of the others d. velocity e. force

*January 20, 2015*

**Physics**

A point on a wheel rotating at 5revs/s is located 0.20m away from the axis. What is the centripetal acceleration? a. 198m/s^2 b. .05m/s^2 c. 48m/s^2 d. 1.35m/s^2

*January 20, 2015*

**Physics**

A 500 kg car experiences a frictional force of 3208 N while turning, if the car is traveling around a turn of radius 16 m what is the velocity of the car?

*January 15, 2015*

**Physics**

A car driving at 99m/s can stop in 83 m. What is the smallest radius the car can safely travel at the original velocity?

*January 15, 2015*

**Physics**

A car driving at 93m/s can stop in 75 m. What is the smallest radius the car can safely travel at the original velocity?

*January 15, 2015*

**Physics**

A penny is placed on a disk that is rotating at 2 revolutions per second. The coefficient of friction between the penny and the disk is 0.4. What is the maximum radius at which the penny will stay on the disk? a. 2.5cm b. 100cm c. 1cm d. 10cm e. 25cm

*January 15, 2015*

**Physics**

A 200kg car is traveling at 50m/s on a level, circular track with radius 100m. What is the traction force required to keep the car on the track? a. 25000N b. 50,000N c. 10000N d. 2500N e. 5000N

*January 15, 2015*

**Chemistry **

How many moles of carbon are needed to react with 5.6 moles of hematite (Fe2O3)?

*January 8, 2015*

**Chemistry **

If 3.79x1024 formula units (molecules) of hematite react with excess carbon, what mass of iron will be produced?

*January 7, 2015*

**Physics**

A 0.0420-kg hollow racquetball with an initial speed of 18.3 m/s collides with a backboard. It rebounds with a speed of 7.4 m/s. Calculate the total impulse on the ball.

*December 21, 2014*

**Physics**

Two objects, one of mass 3kg moving at 2m/s, the other of mass 5kg and speed of 2m/s move towards each other and collide in a head on collision. If the collision is perfectly inelastic, find the speed of the objects after the collision.

*December 21, 2014*

**math**

A is wrong too.

*December 10, 2014*

**physical science**

A.) 0 because it's not in motion B.) 91.875 J C.)1,201.725 J D.) 205,700,000 J

*November 6, 2014*

**sixth grade math**

81 servings

*November 4, 2014*

**physics**

A projectile is fired at 12.5 m/s at an angle of 53.1 with the horizontal from a point 75m above the ground. A) How long does it take to reach the ground? B)What max height does it reach? C) What horizontal distance does it travel before striking the ground? D) With what ...

*November 2, 2014*

**Math**

Samantha made 9800 mL of fruit punch for a party, and she served the fruit punch divided equally in 5 pitchers. Her guests drank 2 pitchers of fruit punch. How many liters of fruit punch did Samantha have left over?

*October 19, 2014*

**chemistry**

Propane (C3H8) which is used as fuel in BBQ tanks often contains some butane(C4H10). A sample of a fuel mixture known to contain both propane and butane occupies a certain volume at a total pressure of 30 mmHg. The sample is then burned completely to produce CO2 and H2O. The ...

*October 17, 2014*

**chemistry**

A co-op student designed an experiment to collect hydrogen gas by reacting iron with a hydrochloric acid (HCl) solution. The student’s co-op supervisor suggested that aluminum can also be included to generate hydrogen gas: Fe + 2 HCl → 2 FeCl2 + H2 2 Al + 6 HCl &#...

*October 17, 2014*

**physics**

Vx= Vsinϕ Vy= Vcosϕ

*September 30, 2014*

**Pre-Calc**

1.) Describe how the graphs of f(x) = |2x| and g(x) = -|2x| are related. a.) All of these. b.) The graph of g(x) is a reflection of the graph of f(x) over the y-axis. c.) Non of these. d.) The graph of g(x) is a reflection of the graph of f(x) over the x and y axes. e.) The ...

*September 26, 2014*

**chemistry**

Oops I left a part of the question out: 2. Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes, leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 215 ng of ...

*September 23, 2014*

**chemistry**

Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes, leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 215 ng of mercury / mL, what is the total mass in ...

*September 23, 2014*

**chemistry**

if you need 50.0 grams of lead2 chloride how much magnesium chloride would you need?

*July 9, 2014*

**physics**

Determine the final velocity of a medicine ball that is dropped from a height of 7.00 meters. (assume air resistance is negligible) I don't understand how to solve this with only change in x. I imagine I am supposed to assume initial velocity is 0 m/s, but, even if that is...

*June 5, 2014*

**english**

The italicized word is "extremely." Would that be intensive?

*May 16, 2014*

**geometry**

The james family just put in a pool. It is 5 feet deep and has an 8 foot radius. They only want to fill the pool 5/6 of the way. What will be the volume of the pool once filled? I'm so confused...please help.

*May 13, 2014*

**Science**

chromosomes split apart from both "parents" then that set from the mother attaches to the set that the father gives off. (the chromosomes carry DNA)

*April 18, 2014*

**English**

Rose, Ms. Sue, and the one above Rose are correct! I have done this assessment before and it was B,C,B! Hope this helps make sure you know you got the right answers :)

*April 15, 2014*

**English**

C C B Is 100% correct! 🎉

*April 7, 2014*

**Math**

do the equations y=2x+3 and x=1-2y have common solution, no common solution or infinitely many common solutions?

*March 4, 2014*

**5th grade math**

In the multiplication problem at the right different letters stand for different digits, and ABC and DBC each represent a three digit number. What number does DBC represent? Two answer possible; give one

*March 1, 2014*

**trig**

a sailor on a boat 580 metres from the base of a vertical cliff sights the top of a lighthouse with an angel of elevation of 31 degrees

*February 26, 2014*

**social studies (CHECK ANSWERS)**

1. A 2. C 3. A 4. D 5. B 6. C

*January 29, 2014*

**physics**

K(Ho)^2+(m)(Vo^2)=K(Hf)^2+m(Vo^2)

*December 5, 2013*

**Math Questions (AGAIN)**

I'm really confused with this!

*November 20, 2013*

**Math Questions (AGAIN)**

Hi! Someone was helping me earlier with these but their explanation was hard to understand. Can someone ELSE help me? Thanka! :) 1.) There is a 10% chance it will rain on Saturday and a 30% chance it will rain on Sunday. What percent chance is there that it will rain on both ...

*November 20, 2013*

**Math**

Hi! I have 4 math questions! (: 1.) There is a 10% chance it will rain on Saturday and a 30% chance it will rain on Sunday. What percent chance is there that it will rain on both Saturday and Sunday? 2.)In a shipment of alarm clocks, the probability that one alarm clock is ...

*November 20, 2013*

**12**

If cot £ = -9/2 with £ in Quadrant II, find sin £

*September 17, 2013*

**Math**

A team has won 50% of the 60 games it played, find the number of games the team must win in succession to increase its winning percentage to 60%?

*May 15, 2013*

**Ms.Sue**

Thank you sooooooo much for your help.You're awesome!

*April 25, 2013*

**Ms.Sue**

The options are 3G-30 3G+30 30g+3 30g-3

*April 25, 2013*

**Ms.Sue**

It doesn't give me that as an option.I have another question. Write an situation that can be represented by 6n+4. Is this right? Brooke has n number of coins that are worth $6 each.If she also has 4 dollar bills in her purse,how much does she have in total?

*April 25, 2013*

**Ms.Sue**

I think it is 3G+30. I can't figure out the situation problem.I'm good at subtraction situations but I keep drawing a blank on the addition.

*April 25, 2013*

**Ms.Sue**

Can you please help me?I think the first question I posted the answer is 3G+30

*April 25, 2013*

**Math **

Write a situation that can be represented by 6n+4.

*April 25, 2013*

**Math**

Ben conserves water in his home.He conserves 3 gallons each time he turns off the faucet when brushing his teeth.He conserves 30 gallons by running the dishwasher once a day instead of twice a day. What expression represents the total number of gallons,g,Ben saves each day? 3g...

*April 25, 2013*

**Ms Sue**

Thank you so much!

*April 24, 2013*

**Ms Sue**

Thank you.I didn't know * was multiplication.So, would I explain she is not correct because?I don't know how to answer the why part.I knew they would be different I just don't understand why.

*April 24, 2013*

**Ms Sue**

I'm just making sure that you knew I meant the x was multiplication.I don't understand why the a is not represented with a number.I was thinking that I would have to find what a equals.Thank you for helping me.

*April 24, 2013*

**Ms Sue**

I don't understand.Can you please explain it to me?

*April 24, 2013*

**Math**

Greta says that the expression (2xa)+5 is the same as 2x(a+5). Is she correct?Why or why not?

*April 24, 2013*

**math**

The profit (in millions of dollars) from the sale of x million units of Blue Glue is given by p= .7x-25.5. The cost is given by c= .9x +25.5 (a) Find the revenue equation. (b) What is the revenue from selling 10 million units? (c)What is the break-even point?

*April 9, 2013*

**Math**

The profit (in millions of dollars) from the sale of x million units of Blue Glue is given by p= .7x-25.5. The cost is given by c= .9x +25.5 (a) Find the revenue equation. (b) What is the revenue from selling 10 million units? (c)What is the break-even point?

*April 9, 2013*

**Rbowh**

Thank you so much!

*April 9, 2013*

**Rbowh**

On the second problem r+11=19 r+11-_=19-_ r=_ Would it be R+11=30=19-11 R=8

*April 9, 2013*

**To rbowh**

I don't understand how w-8+8=26+8.wouldn't the first blank be 0?

*April 9, 2013*

**To rbowh**

Was 34 right?

*April 9, 2013*

**Math**

34?

*April 9, 2013*