Friday

August 26, 2016
Total # Posts: 98,860

**World history.**

ok thanks.
*August 25, 2016*

**World history.**

Jerichos status as the first city with a wall indicates that a. it was the first city built in during the old stone age b. it was the first time concrete was used as a building material c. it had a government that could organize construction projects d. it was the first time a...
*August 25, 2016*

**Maths**

A group of 48 ants have food for 16 days but 12 ants died after 4 days due to rain. For how many days the remaining food will be enough
*August 25, 2016*

**Physics **

An electric motor runs at a constant rotational frequency of 3000 r/min and has the load of 75 Nm and a 5,0 Nm extra load of friction and gear. The efficiency of the motor is 78%. a) What is the input power of the motor? b) What is the work done by the motor in 24 hours and c...
*August 25, 2016*

**Health**

Which part of the health triangle includes sharing feelings with others A) physical B) social*** C) mental and emotional D) monetary My second answer would be mental and emotional
*August 25, 2016*

**MAth**

The diameter of a barrel is 56cm. It is rolled over 2944cm. How many complete revolutions is needed?
*August 25, 2016*

**maths**

what is the value of (2)^x/2+(3)^x/2=(13)^x/4
*August 24, 2016*

**S.S. Connexus**

🙄
*August 24, 2016*

**S.S. Connexus**

Any One know the answers the the Social Studies 8 A Unit 3: The Revolutionary Era test?
*August 24, 2016*

**math**

since YZ = 18 XY/YZ = 7/9 substitute 18 to YZ XY/18 = 7/9 then multiply XY = (18) (7/9) XY = 14 then solve WX/XY = 5/7 substitute 14 to XY WX/14 = 5/7 WX = (14) (5/7) WX = 10 summarize the value WX = 10, XY = 14, YZ = 18 How long is WZ? 10 + 14 + 18 = 42 WZ = 42
*August 24, 2016*

**math**

wx/xy = 5/7 and xy/yz = 7/9 if YZ = 18 how long is WZ?
*August 24, 2016*

**Math**

1/2 (90) + 1/4 (84) + 1/4 (x) = 82 LCD = 4 2 (90) + 1 (84) + 1 (x) = 4 (82) 180 + 84 + x = 328 x = 328 - 180 - 84 x = 64
*August 24, 2016*

**Math**

The score for half of the students in a class on a certain test was 90. The score for another fourth of the students was 84. if the average (arithmetic mean) score for all of the students was 82, what was the average score for the remaining students?
*August 24, 2016*

**Math**

average = ( a + b ) / 2 substitute the value of b = 11a ( a + b ) / 2 ( a + 11a ) / 2 = 12a / 2 = 6a
*August 24, 2016*

**Math**

If b= 11a, what is the average (arithmetic mean) of b and a in terms of a?
*August 24, 2016*

**Maths**

elaborate the given use equation tool
*August 24, 2016*

**Math**

Twenty-five people are asked to donate money to a local charity.Exactly fifteen (15) give at least P100 each. If x is the average (arithmetic mean) amount donate, what is the lowest possible value of x?
*August 24, 2016*

**Math**

A chemical compound becomes 1.375 degrees hotter when one gram of calcium is added to it. how much calcium must you add to raise the temperature of the compound by 75.625 degrees/
*August 24, 2016*

**Math**

If the average of x and y is 10, then the average of x + 7 and y + 17 is ?
*August 24, 2016*

**Math**

s – 246 = 100 What is s?
*August 24, 2016*

**Science**

A racecar driver steps on the gas, and his car travels 16 meters in 2 seconds, starting from rest. What is the average velocity in m/s and km/h?
*August 24, 2016*

**Math**

The difference between 191.60 and 191.63 is 0.03 so I would say that three is worth about 0.03
*August 24, 2016*

**math**

24 and 96
*August 24, 2016*

**math**

A box contain 120 oranges 20 percent of them are not suitable for sale hiw many oranges are unsuitable for sale. How many orange could be sold
*August 24, 2016*

**MAth**

The diameter of a barrel is 56cm. It is rolled over 2944cm. How many complete revolutions is needed?
*August 24, 2016*

**physics**

A block of wood is 8.00cm long, 20.0cm high, and 0.10m wide. its mass is 1.00kg. what is its density in g/cm3?
*August 24, 2016*

**pre-algabra**

im trying to figure this out can you help me. the question is you download 12 new songs to your MP3 player. Then you 5 old songs. and then it says i have to write the amount as an integer. can you please help me.
*August 23, 2016*

**Algebra 1**

To which subsets of real numbers does the number –22 belong? Choose all subsets that apply. whole numbers** rational numbers integers** irrational numbers natural numbers Maximum choice is 2
*August 23, 2016*

**waketech**

How many cords of wood could you fit in a room that is 88 yards long, 88 yards wide, and 33 yards high? Use the fact that 1 cordequals=128 ftcubed3 and 1 ydcubed3equals=27 ftcubed3.
*August 23, 2016*

**Language**

Mary was awarded first prize in the contest
*August 23, 2016*

**home project**

I my room is 15 by 15 square feet, how many tiles would i need
*August 23, 2016*

**mechanics**

A projectile is launched from the origin with a speed of 2 ms−1 at the angle of 60∘ from the horizontal. Assume that ground to be flat and plane of trajectory to be x-y plane with x-axis along horizontal. The radial and tangential components of its velocity at its ...
*August 23, 2016*

**Math**

Determine the miles traveled in 5hours at a rate of 189 miles in 3hours
*August 23, 2016*

**Math**

The present age of a woman is 30years older than her daughter. 15years ago she was twice as old as her daughter. How old is her daughter at present. How old would the woman be 12years from now.
*August 22, 2016*

**Science**

What is the function of the nucleus in a cell? A.The nucleus controls the cell’s activity.** B.The nucleus identifies a cell as belonging to a plant. C.The nucleus determines what substances enter and leave the cell. D.The nucleus can be seen under a transmission electron...
*August 22, 2016*

**Science**

Which of the following is not part of the cell theory? A.Cells are the building blocks of life. B.All living things are made up of cells. C.All cells are created from other cells through cell division. D.The nucleus is the control center of the cell.***
*August 22, 2016*

**science**

an electron orbiting around hydrogen atom in circular orbit of radius 1armgstrom with the speed of 5*10^6 m/sec. Calculate magnetic field produced at the nucleus?
*August 22, 2016*

**Maths**

120 liter lemonade solution require 11%sugar and 9%juice solve for sugar and juice requirements
*August 22, 2016*

**Chemistry**

There are three naturally occurring isotopes of the hypothetical element hilarium 41Hi, 42Hi, and 44Hi. The percentages of these isotopes are the following: Hilarium Natural Isotopes Abundance 41Hi 18.7% 42Hi 43.6% 44Hi 37.7% You can assume that the atomic masses are exactly ...
*August 22, 2016*

**Math**

If I have 25 dollars and need to buy 25 fruits. The fruits is watermelon is 4 dollars. Peaches is 50 cents. Apples is 25 cents.what 25 fruits can I buy with 25 dollar's?
*August 21, 2016*

**maths**

the difference between two numbers is 16. if the smaller number is one-third of the larger number than what find the numbers
*August 21, 2016*

**Math**

If I have 25 dollars and need to buy 25 fruits. The fruits is watermelon is 4 dollars. Peaches is 50 cents. Apples is 25 cents.what 25 fruits can I buy with 25 dollar's?
*August 21, 2016*

**Chemistry**

How many grams of KCl should be added to 1.5kg of water to lower its freezing point to -7.5°C
*August 21, 2016*

**Math**

If I have 25 dollars and need to buy 25 fruits. The fruits is watermelon is 4 dollars. Peaches is 50 cents. Apples is 25 cents.what 25 fruits can I buy with 25 dollar's?
*August 20, 2016*

**Algebra**

What would the domain of Y=_/2x+14)/(x^2)-49 be? (2x+14 is under a square root) There's a hole but I do not know how to factor them
*August 20, 2016*

**algebra**

a ball is dropped from the top of a building that is known to be 256 feet high.the formula for finding the height of the ball at any time t is h=256-16t^2,where t is measured in seconds.how many seconds will it take for the ball to hit the ground?
*August 20, 2016*

**maths**

If the length of a rectangular room is 4 times its width,how is the room if it is 6,8 m long.Calculate the perimeter of the room.
*August 20, 2016*

**chemistry**

what is the concentration of na and co3 ions in 0.2M aqueous solution of na2co3
*August 20, 2016*

**government**

what states supported the new jersey plan
*August 19, 2016*

**calc**

Suppose the marginal cost is C′(x) = e^−0.3x , where x is measured in units of 200 items and the cost is measured in units of $10,000. Find the cost corresponding to the production interval [200, 1,000]. Round to the nearest dollar.
*August 19, 2016*

**Maths**

A bag contains marbles of three different colours red, blue , yellow. 2/5 of the marbles are red. The ratio of the number of blue marbles to the number of yellow marbles is 5:7. What fraction of the marbles in the bag is blue? There are 54 more red marbles than blue marbles. ...
*August 19, 2016*

**Math**

How do u simplify ab to the 3rd power over b to the 2nd power
*August 19, 2016*

**Language Arts, someone check please?**

So, the first one is A?
*August 18, 2016*

**High Agility Math**

Juan has twice as many brothers as sisters. His sister Maria has 5 times as many brothers than sisters. How many children are in the family?
*August 18, 2016*

**History**

Thanks
*August 18, 2016*

**History**

Explain why you believe South Carolina is a “melting pot,” a “tossed salad,” or both. Explain the difference between the melting pot and tossed salad metaphors in your answer. Be sure to reference the people and communities of South Carolina in your answer...
*August 18, 2016*

**math**

find the derivative of g (theta)=sine squared (3 theta)
*August 18, 2016*

**maths**

At the sleep over, the pizzas were in thirds. Sally and her hungry friends ate seven thirds. How much pizza did they eat?
*August 17, 2016*

**Math**

Suppose you are taking a true-false test consisting of 5 questions. In how many ways can you answer the question?
*August 16, 2016*

**Life Orientation**

I want the answer of the selected question
*August 16, 2016*

**Life Orientation**

1: inhumane farming methods
*August 16, 2016*

**perfect number**

I need two perfect numbers. For my activity,I should submit it tomorrow please help me. I need now. Please
*August 16, 2016*

**Social Studies**

the answer is B
*August 15, 2016*

**Social Studies**

the answer is D
*August 15, 2016*

**Science**

An aeroplane flying in the air dips with a speed of 360 km per hr in a vertical circle of radius is 200m the weight of the pilot sitting in it 75kg calculate the force with which the pilot presses his seat and plane is at lowest point and plane is at highest point
*August 15, 2016*

**simple harmonic motion**

a simple harmonic motion is represented by x=4sin[3t+3.14/4].find the angular frequency and amplitude and what is the velocity and acceleration at t=1 second.
*August 15, 2016*

**if the difference of two positive integer is 4,and**

if the difference of two positive integer is 4,and the difference of their square is 80,what is the sum of ? I'm
*August 13, 2016*

**Mechanical Vibration**

nice ka jid. hahahaha
*August 13, 2016*

**Maths**

The graph of a quadratic is a parabola. A parabola has a max or min at the vertex. If the coefficient of x^2 is + it has a min (holds water), Otherwise a max. so find the vertex if y = ax^2 +bx +c then to find zeros you do x = [ -b +/- sqrt(b^2-2ac) ]/2a symmetry (center of ...
*August 12, 2016*

**car rental agency**

company a- $30/day 22cents/mile company b- $28/day 26 cents/mile For a 2-day rental, at what number of mile will the two companies charge the same. Steps please
*August 12, 2016*

**Algebra 1**

THINK square root of 2 (about 1.414213562) can NOT be expressed as a ratio of two whole numbers square root of ten can NOT be expressed as ratio of two whole numbers THEREFORE square root of two * square root of ten which is square root of twenty can NOT be expressed as the ...
*August 12, 2016*

**Algebra 1**

To which subset(s) does the number –square root of twenty belong? Choose all that apply. (Irrational Numbers (Rational Numbers*** (Integers*** (Whole Numbers (Natural Numbers The maximum of choices is 2
*August 12, 2016*

**Math**

Suppose you had 10 beads and sold 6. How many are left? If you can do that, do this one the same way.
*August 12, 2016*

**Math**

Abdul had 720 beads.He sold 648 of them. How many beads does he have left?
*August 12, 2016*

**Maths**

you want to try that again as text, and not URL?
*August 12, 2016*

**maths**

after n seconds, he has climbed 3n cm. After 19 seconds he has climbed 57cm On the 20th second he's at the top.
*August 12, 2016*

**Maths**

∫√tan x sec2x dx If that is sec^2(x), then if you let u = tanx du = sec^2x dx and you have ∫√u du
*August 12, 2016*

**math**

Starting with x, 2x/5 = b 1/6 (3/5 x) = u b = u+105 Now just solve for x by substituting in the values of b and u
*August 12, 2016*

**maths**

540 * 1.10
*August 12, 2016*

**maths**

goods costing ₹540 are sold at a gain of 10% . Find the SP
*August 12, 2016*

**world history**

D
*August 11, 2016*

**Matg**

I have a case of 12x16 case of brownies how many square peices can I get in 2"
*August 11, 2016*

**ART**

Thank u
*August 11, 2016*

**physics **

a car moving with a speed of 50 km/hr can be spotted by breaks after at least 6m.If the same car is moving with a speed of 100km/hr the minimum stopping distance is? With solution
*August 11, 2016*

**physics **

a car moving with a speed of 50 km/hr can be spotted by breaks after at least 6m.If the same car is moving with a speed of 100km/hr the minimum stopping distance is?
*August 11, 2016*

**prealgebra**

(12/3.5)1.25
*August 11, 2016*

**NCC**

v = a t = 20 m/s
*August 11, 2016*

**Math**

so 1 man mows 4 greens in 160 min 1 man moves one green in 40 min You did not say how many greens to mow in an hour so I can not continue, but you should be able to figure it out now that you have the data for one man
*August 11, 2016*

**typos**

makes no sense
*August 11, 2016*

**Math**

240 people/one day so 240/4 = 60 so 60 - 24
*August 11, 2016*

**physics**

24 relative to you. 12 relative to the mirror surface and the floor etc. It is approaching the mirror surface just as fast as you are.
*August 11, 2016*

**Math**

You do whatever is inside the parentheses first.
*August 11, 2016*

**Math**

180 - 163
*August 11, 2016*

**Maths**

games played = 9+N games won = 2+N 2+N = (1/2)(9+N) 4 + 2 N = 9 + N N = 5
*August 11, 2016*

**Calculus**

Could be :)
*August 11, 2016*

**Calculus**

Find arccos (sqrt2/2). Can this be pi/4 and 7pi/4?
*August 11, 2016*

**Physics**

depends on temperature BUT I suspect that there is liquid chlorine in the bottle. If so then the pressure remains at the vapor pressure of Chlorine until it is evaporated. The N2 is all gas in there until you get down to liquid air temperature so it follows gas laws.
*August 11, 2016*

**Sum of geometric sequences**

5,15,45,135,....S10
*August 10, 2016*