Wednesday

August 5, 2015

August 5, 2015

Total # Posts: 4,390

**chem**

waht is the kinetic energy in joules of 780-lb motorcycle moving at 54 mph?
*July 19, 2013*

**math**

Would it be 2,655
*July 19, 2013*

**math**

How would you show the work for this. Bills locker is 30 inches tall, 10 inches wide, and 14 inches deep. If his books take up 1,545 in. of space, how much space does he have left to hang his coat and bookbag? Thank you
*July 19, 2013*

**math**

thank you
*July 18, 2013*

**math **

Ted wants to make an input- output table with numbers of meters as input values and numbers of centimeters as output values. What rule should Ted use for his table?
*July 18, 2013*

**math**

Thank you so much
*July 18, 2013*

**math**

32/5 =6 2/5 ?
*July 18, 2013*

**math **

ED is wrapping 8 identicap presents. He needs 3/5m of ribbon to wrap each present. He needs an additional 1/5m of ribbon to make a bow. How much ribbon does he need to wrap and make bows for all 8 presents?
*July 18, 2013*

**math**

adding fractions
*July 16, 2013*

**math**

sorry lost, first time ever doing this. can you explain
*July 16, 2013*

**math **

part a: Lucy makes pottery to sell. One week , she uses 6 3/4kg of clay next week 2 2/3 clay. HOW much does she use during 2 weeks ? part b : The clay is in blocks that weigh 12 kg. How much clay does lucy have left after using clay for 2 weeks ?
*July 16, 2013*

**math **

In the number 13,407.036 there are two 3s. Explain how the values of the 3s are related. Thanks
*July 16, 2013*

**math**

Thanks
*July 16, 2013*

**math**

thank you. Iget it know
*July 16, 2013*

**math**

Ann bought 2/3 lb of carrots 3/4lb of celery and 7/8lb of onions. How many lbs of vegetables did she buy?
*July 16, 2013*

**algebra 2**

Which is the standard form of a circle with equation x^2 + 4x + y^2 - 6y = 3? A. (x+2)^2+(y+9)^2=16 B. (x-2)^2+(y-9)^2=3 C. (x+2)^2+(y-3)^=16 D. (x+2)^2+(y-3)^2=3
*July 14, 2013*

**Bio**

1. Some people get repeated fungal infections because they cannot destroy these dangerous microbes after their white blood cells phagocytize them. This most likely means that these people have __________ that do not work properly. A. ribosomes B. lysosomes C. mitochondria D. ...
*July 13, 2013*

**algebra 2**

Suppose y varies jointly with x and z, and x = 4 when y = 8 and z = -2.What is the value of x when y = 12 and z = 3? A. -4 B. 4 C. 15 D. 9
*July 11, 2013*

**math ,geometry**

kennedy
*July 11, 2013*

**math**

Thank you , now i get it.
*July 9, 2013*

**math**

Thank you for the answer. How do you multiply 360 by 3/8 ? We never were taught this
*July 9, 2013*

**math**

There are 360 people at a museum opening. Half of the people are museum supporters, 3/8 are artists, and the rest are museum employees. How many people are artists ?
*July 9, 2013*

**math**

Thank you
*July 9, 2013*

**math**

What is the standard form of the number 2x1 + 4x1/10 + 9x 1/1,000.
*July 9, 2013*

**Physics**

A 1650 kg car rolling on a horizontal surface has a speed of 20 km/hr when it strikes a horizontal coiled spring and is brought to rest in a distance of 3.5 m. What is the spring constant (in N/m) of the spring? (Ignore nonconservative forces such as friction.)
*July 8, 2013*

**Physics**

What is the minimum work in joules needed to push a 1840 kg car 14.0 m up a 12.5 degree incline? (Ignore friction.)
*July 8, 2013*

**math**

6000 and 1.875 ?
*July 8, 2013*

**math**

a room is 25ft long, 20 ft wide, and12ft tall. What is the volume of the room ? Second question a carpet is 2.5m long and 0.75m wide. What is the area of the carpet in square meters ?
*July 8, 2013*

**math**

Igot it now. Thank you so much
*July 8, 2013*

**math**

Thank you , but could you explain the factorization of 45? Idont get it
*July 8, 2013*

**math**

WHAT IS THE PRIME FACTORIZATION OF 45? and what is the sum of the only two prime numbers that differ by one ? Thank you
*July 8, 2013*

**algebra 2**

You are selling tickets for the homecoming football game. Student tickets cost $4 and general admission tickets cost $6. You sell 450 tickets and collect $2340. How many of each type of ticket did you sell? A. Not enough information B. 180 students;270 general C. 270 students;...
*July 5, 2013*

**math**

Thank you so much
*July 5, 2013*

**math**

No idea. Please help. Is 20 times 5/6 g reater than or less than 20? How do you do it? Second question What is 4/5 of 2/3?It shows a square and says find answer on the model. Any help, please
*July 5, 2013*

**math**

how do you do the following? 9/10 - ?= 17/30 and 3/10 + 4/5 = ? first time doing this . Thank you
*July 3, 2013*

**phy**

The fundamental interval of a thermometric scale is
*July 2, 2013*

**phy**

An ungraduated mercury thermometer attached to a millimeter scale reads 22.8 mm in ice and 242mm in steam at standard pressure. What will the millimeter read when the temperature is. 20oC?
*July 2, 2013*

**Chemistry**

A hard water sample contains 121 mg of CaCO3 per liter of water. Calculate the mass of Na3Po4 needed to remove all Ca^2+ ions from 2.50 L of the water sample? Please help! This question is already on here, but I don't understand the part where it says substitute expression...
*July 1, 2013*

**math**

got it. ty
*June 28, 2013*

**math**

what would be the order from greatest to least 0.181, 0.38 , 0.139, 0.319 . any help would be appreciated. TY
*June 28, 2013*

**physics**

5. A bowling ball (mass = 7.2 kg, radius = 0.13 m) and a billiard ball (mass = 0.45 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
*June 27, 2013*

**physics**

A rocket of mass 4.36 × 105 kg is in flight near earth's surface. Its thrust is directed at an angle of 58.9° above the horizontal and has a magnitude of 9.61 × 106 N. Find the (a) magnitude and (b) direction of the rocket's acceleration. Give the ...
*June 24, 2013*

**Financial Math Help? (Determine compound period)?**

Future value of a $200 deposit in an account that earns 6.25% annual interest is $272.71 after 5 years. Determine the compounding period for this investment. My work: PV=FV(1+I/n)^ (-n) 200=272.71(1+0.0625/n)^-5n log0.73=log(1+0.0625/n)-5n This is where I got stuck. No idea ...
*June 11, 2013*

**Maths**

Hi, I am just doing some maths revision in light of my maths GCSE resit, which is very soon. I am sitting the higher paper for the first time, so some of the questions towards the end of the paper are very testing of my knowledge. At the moment I am going over past papers and ...
*June 5, 2013*

**english 2**

The paragraph below needs to be made more coherent. Use repetition, synonyms, and pronouns to link the sentences. Type the improved paragraph in the space provided on the following page Many cities are easily distinguished by their skylines. In such cities--New York and Paris...
*May 30, 2013*

**Math (Circles)**

Ok thats what I thought...thanks!
*May 29, 2013*

**Math (Circles)**

True or False If two circles have 4 common tangents, then the two circles intersect.
*May 29, 2013*

**Geometric Series question? Help!?**

A bouncy ball bounces to 2/3 of its height when dropped on a hard surface. Suppose the ball is dropped from 20 m. What is the height of the ball after the 6th bounce? Answer = 1280/729 m OR 1.75 m What is the total distance travelled by the ball after 10 bounces? 98.6 m So, I ...
*May 29, 2013*

**Calculus**

At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 24 knots and ship B is sailing north at 19 knots. How fast (in knots) is the distance between the ships changing at 6 PM?
*May 24, 2013*

**chem **

At a pressure of 2 atm, hydrogen gas occupies a volume of 8 L. What pressure must the gas be under if the volume is increased to 10 L? Don't forget the units. im confused on how to set it up and plug the numbers in?
*May 23, 2013*

**probability**

a spinner has 5 sections and is spun 40 times. it lands on 2 six times. What is probability of spinning a 2?
*May 20, 2013*

**science**

where does the energy needed to heat up cold water come from?
*May 19, 2013*

**math**

An aircraft is flying in a straight line away from a person standing on the ground. The initial angle of elevation changes from 70 degrees to 30 degrees in 1 minute. What is the cruising speed of the aircraft if its altitude is 10,000 m?
*May 17, 2013*

**math**

how do you find the rate of change from x=-1 to x=0 on a graph function?
*May 17, 2013*

**math**

write each decimal as a mixed number.5.25 and 9.12 WAS never taught this. Thank you
*May 15, 2013*

**math**

write each mixed number as a decimal.3 and seven tenths. 4 and one half how??
*May 15, 2013*

**math**

1. ((9*9+5)/9 = (81+5)/9 = 86/9 2. (6*39 + 23)/39 = (234 + 23)/39 = 257/39 3. 5 3/4 4. 19/4 * 8/7 = 34/7 5. 311/15 -52/3 = (311-260)/15 =51/15 =17/5 6. 0 7. P = 70
*May 14, 2013*

**Alegebra**

A + B = 30 0.6A + 0.3B = 0.4(30) A + B = 30 6A + 3B = 120 -3A -3B = -90 6A + 3B = 120 3A = 30 3A/3 = 30/3 A = 10 10 + B = 30 10-10 + B = 30-10 B = 20 Or A = x B = 3-x , 0.4(30) 0.6x + 0.3(30-x) = 0.4(30) 0.6x + 9 -0.3x = 12 0.3x + 9 = 12 0.3x + 9-9 = 12-9 0.3x = 3 0.3x/0.3 = 3...
*May 13, 2013*

**French**

Alex will go to the library to study and Becca will go play soccer at the park for there weekend
*May 13, 2013*

**French**

i need to write a french conversation about going to places such as the cinema, library and do activities. i started off but i need help so far: A-Bonoujour Becca B- Salut Alex comment ca va? A- Ca va bien, et toi B-ca va tres bien A-Qu'est-ce que tu vas faire cet
*May 13, 2013*

** math calculus**

The demand function for a product is given by p = 10,000 [1 − (5/5 + e^−0.001x)] where p is the price per unit (in dollars) and x is the number of units sold. Find the numbers of units sold for prices of p = $1000 and p = $1500. (Round your answers to the nearest ...
*May 10, 2013*

**history**

What lessons from the past pertaining to the civil rights and women's movement from the past can we apply to the future?
*May 9, 2013*

**math 160(buss calculus)**

my homework is due in 1 hour Let x = 1 and Δx = 0.01. Find Δy. (Round your answer to five decimal places.) f(x) = x/x^2 + 5
*May 4, 2013*

**math**

80
*May 3, 2013*

**math**

a piece of land in the shape of a reguler pentagon has a perimeter of 400m.calculate one side
*May 3, 2013*

**Chemistry **

If you had a 200 ML container full of helium gas, and you transferred all of the gas into an empty 1.00 ml container, would the 1.00 ml container be full or only 1/4 full?
*May 2, 2013*

**Chemistry **

If you had a 200 ML container full of helium gas, and you transferred all of the gas into an empty 1.00 ml container, would the 1.00 ml container be full or only 1/4 full?
*May 2, 2013*

**math**

rectangular prism has a volume of 240 ft3. write two possible sets of dimensions for the prism
*April 30, 2013*

**math**

Please help me solve this question. Find the value of the annuity. a=1000 I=0.06,n=25? what is the future value of annuity? (round to the nearest cent.)
*April 29, 2013*

**physics**

a wheel radius 0.25 m is mounted on a frictionless horizontal axle. the moment of inertia of the wheel about the axis is 0.040. a light cord wrapped around the wheel supports the 0.50 kg of box. the wheel is released from the rest. what is the magnitude of acceleration of the ...
*April 28, 2013*

**Chemistry**

Why does the titration of terephthalic acid yield a mass of approximately half the molar mass?
*April 27, 2013*

**math**

I need help solving this equation please. Use the qudratic formula to find any x-intercepton the graph of the equation. Y=3x^2+9-1
*April 24, 2013*

**Math**

Adam left the airport and traveled toward the Capital. Elisa left one hour later traveling 50 mph in an effort to catch up to Adam. After traveling for 4 hours Elisa finally caught up. What was Adam's average speed?
*April 23, 2013*

**English**

Take the subject you explored in Part 1 of Submission 2 and narrow it down so that it can be covered in one paragraph. You might use one of the two techniques below. 1. Use one incident from the Answers column of your chart to illustrate an idea. Example: Writing Idea: Fads ...
*April 23, 2013*

**math**

What fraction is equivalent to 14/22
*April 22, 2013*

**Algebra1**

1. A bicycle racer covers a 75 mile training route to prepare for an upcoming race. If the racer could increase his speed by 5 mph, he would complete the same course in 3/4 of the time. Find his average rate of speed. 2. Nina drove for 6 hours at an average rate of 50 mph. ...
*April 18, 2013*

**chemistry**

Calculate the compositionof the gaseous mixture obtained when 1.25 mol f carbon dioxide is exposed to hot carbon at 800 degree celcius in a 1.25 liter vessel. The equilbrim constant kc at 800 degree celcius is 14 for the reaction CO2 + C = 2C0
*April 18, 2013*

**math**

Can you check my answer to see if i really get this word problem thing A camper leaves the campsite walking due east at a rate of 3.5 mph. Another camper leaves the campsite at the same time but travels due west. In two hours the campers will be 15 miles apart. What is the ...
*April 18, 2013*

**Math**

thank you, i have trouble "translating" a word problem to an equation, but thanks!
*April 18, 2013*

**Math**

Two towns are 420 miles apart. A car leaves the first town traveling toward the second town at 55 mph. At the same time, a second car leaves the other town and heads toward the first town at 65 mph. How long will it take for the two cars to meet?
*April 18, 2013*

**Social studies**

How did texas change their government and the way they earned their living after reconstruction?
*April 16, 2013*

**Grade 12 Calculus **

Determine the maximum and minimum of each function on the given interval. a) = 2x^3 − 9x^2 ,−2 ≤ x ≤ 4 b) = 12x − x^3 , x∈ [−3,5]
*April 15, 2013*

**Science need help ?????///**

An astronomer observes two galaxies, A and B, which have redshifts of: Galaxy A = 0.020 and Galaxy B = 0.010. Which galaxy is closest to us and what is its distance away from us? You may assume that the Hubble constant is H0 = 75 km s–1 Mpc−1 and that the speed of ...
*April 14, 2013*

**english**

Is it more closely?
*April 12, 2013*

**english**

WRITE the adverb form that correctly completes the sentence. Hawks resemble falcons (close) of all birds.
*April 12, 2013*

**Physics**

A mirror produces an image that is located 50.0 cm behind the mirror, when the object is located 5.50 cm in front of the mirror. (a) What is the focal length of the mirror? (b) Is the mirror 1 - concave or 2 - convex? (Give the number of the correct answer.)
*April 11, 2013*

**Combinations and Permutations, Steve and Ms. Sue☺**

#8. the answer is 6,840 yourwelcome.
*April 10, 2013*

**math **

There are 27 students in Mrs. Reeds class. The number of boys and number of girls are both composite numbers. There are 3 more girls than boys. How many girls and how many boys are in the class?
*April 10, 2013*

**math**

11 and 13. Thank you. We didnt learn prime and composite numbers but still have homework on it.
*April 10, 2013*

**math**

There are 24 students in Mr.Hills class. The number of boys and number of girls are both prime numbers. There are 2 more boys then girls. How many boys and how many girls are in each class?
*April 10, 2013*

**Chemisrty**

What volume of oxygen, measured at STP, can be prepared by heating 2.16g HgO?
*April 10, 2013*

**math**

What are the intersection points of y = 1/x and y = 1/x^2? Is it x = 0 and x = 1? Thank You
*April 9, 2013*

**Math Systems**

I cannot solve these last three systems. Could you show me the work for them so i understand how to do them. 1) x-y=1 2x+y=5 3x-4y=2 2) 5x+8y+6z=14 2x+5y+z=12 -3x+6y-12z=20 3) x^2+2xy-2y^2=-11 x^2+xy-2y^2=-9
*April 6, 2013*

**Accounting**

How would the journal entry look if you sold a 8% bond with a face value of $11,000 for $9,500? Bond will mature in 10 years.
*April 5, 2013*

**Math**

What is next number in series: 100 96 104 88 120 56
*April 4, 2013*

**calculus **

Use a graph of f(x) = 3 e^{-8 x^2} to estimate the x-values of any critical points and inflection points of f(x). critical points x= Inflection points x= Next, use derivatives to find the x-values of any critical points and inflection points exactly. critical points x= ...
*April 3, 2013*

**advance functions gr12**

write an equation for a rational function whose graph has all of the indicated features: -vertical asymptote with equation x=3 -horizontal asymptote with equation y=2 -hole at x=1 no x intercept thank you
*April 2, 2013*

**calculus**

Consider a window the shape of which is a rectangle of height h surmounted by a triangle having a height T that is 1.1 times the width w of the rectangle If the cross-sectional area is A, determine the dimensions of the window which minimize the perimeter. h = w =
*April 1, 2013*

**Analytical Chemistry**

Current is applied to an aqueous solution of calcium sulfide. Multiple choice help please??! What is produced at the cathode? A) H2(g) B) S(s) C) O2(g) D) Ca(s) What is produced at the anode? A) O2(g) B) H2(g) C) Ca(s) D) S(s)
*March 30, 2013*