# Posts by abc

Total # Posts: 201

**Social Studdies, Ms. Sue please check!**

1. Which of The following provides the definition of a nation? A. The Highest elected officials in a country B. The are ruled by an independent government C. A country with defined borders and foreign policy enforced by a military D. A people with a shared history who live in ...

**Chemistry **

Please tell me how many bonds are in cucl2.4h2o and in CuSO4.5h20 and how cu+2 forms bonds in orbitals 4s,3d with cl2,so4. also please tell me 4h2o and 5h2o attachment in orbitals.

**Chemistry **

So dE=1800-2800 dE=-1000 Is this answer correct?

**Chemistry **

If 18oo cal:of heat is added to a system while system does work equivalent to 2800 cal:by expanding against its surroundings. What is the value of deltaE for the system?

**Chemistry **

In book this line is written in the theory and answer is 2 moles /dm^3 given. But I don't know method of finding. So please tell me how I solve it.

**Chemistry **

Find active mass of 4gm of H2. Please solve it and explain it.

**Math**

Find the sum of an A.P of seventeen terms whose middle term is five .

**Math**

Find geometric mea between radical 2 and radical 8.

**Math**

My answer a6=8.

**Math**

If a1, a2 ,a3 ........an are in Ap such that a5 +a7=16,then find a6.

**Math**

If y=1+X+X^2+X^3........|x|<1 then x=.....? Please solve this problem.

**Physics **

The percentage errors in the measurement of mass and speed are 2% and 4%respectively. Then find maximum error in the measurement of K.E?

**Physics **

The maximum and minimum magnitudes of the resultant of two given vectors are 17N and 7N respectively. If two vectors are at right angles to each other, then find the magnitude of their resultant?

**Physics **

Find the angle between the vectors A=6i+8j+10k B=6i+8j-10k

**Physics **

Find the unit vector parallel to the vector : C=12i+24j-8k. A.9/7i+5/7j+1/7k B.3/7i+6/7j-2/7k. I think B is correct. Please tell me correct option and method of finding.

**Physics **

If the vectors A and B are such that |A+B|=|A-B, then find the angle between vectors A and B?

**Math **

What is the determinant of a square matrix whose entry or element is digit or number. For example (100). Please tell me method of finding the determinant of this matrix.

**Chemistry **

Find the ratio of rate diffusion of SO2,O2, CH4?

**Math**

Sorry it's chemistry, I have written math its my mistake.

**Math**

Find the ratio of rate dffusion of So2 ,O2,CH4?

**Math**

In how many ways a set can be written? Two or three. I am confused please tell me correct.

**English **

........ of the books of ali have blue colour. We can use some and none in the blank. But what do you think about 'any'in this blank. Is it correct.

**Math **

Express the ratio in its simplest form. 8 furlongs:3 miles, 32 ounces:5pounds, 14 pounds:2 stones, 1760 yards :2 miles. Please tell me how I convert the quantities in same units.

**Chemistry **

Kg/m^2 is the unit of pressure how i prove it. Please help me.

**Chemistry **

Number of Oxygen atoms in 4.4g of CO2 is A)1.2×10^13 B)6×10^22 C)6×10^23 D)12×10^23 Please tell me correct option with the solution.

**Chemistry **

Find moles of O atoms in 9.00g of Mg(NO3)2.

**Chemistry **

Find moles of atoms in 9.00g of Magnesium nitrate. And please tell me method of typing molecular formula of any compound as of water or etc.

**Math**

ALi rents a car for d days. He pays m dollars per day for each of first 7 days, and half that rate for each additional day. Find total rent, if d greater than 7?

**Math**

If 3/4 of the employees in a supermarket are not college graduates,what is the ratio of the number of college graduates to those who are not college graduates? I have solved ,please check it. Let x total employees (3/4)× not graduates So (1/4)x are graduates Ratio ...

**Math**

Michael has 1 liter of a mature containing 69%of boric acid. How much water must be added to make the mixture 50% boric acid ? Represent answer as fraction.

**Math**

Thanks Ms. Sue

**Math**

The ratio of the number of freshman to old students to juniors to seniors on a college basketball team is 4:7:6:8.what percent of the team are old students?

**Math**

Last year, the ratio of the tennis matches ta that central college young boy's team won to the number of matches they lost was 7:3.what percent of their matches did the team win ?

**Math**

Find the greatest number of four and five digits, which are perfect square. Also find least number four digits, which is perfect square. I have solved but with help of calculator. 9805 ,99856 and least is 1024.are these correct? Please tell me how can I find these without the ...

**Math**

Thank you :)

**Math**

The of the 45 numbers is 9.the average of the first 20 is 10 and the average of the last 24 is 8.find the 21st number. I have solved please check this. 9=x/45 ,so x=415. 10=x/20, x=200 and 8=x/24, x=192 So,415-(200+192)=23.answer Is this way and answer correct?

**Math**

Find the least number that is multiplied to 1176 t0 make it perfect square.

**Math**

How can I find number of inches in F feet and I inches?

**Math**

I'm confused in making data for to solve this problem. Please help me.

**Math**

ALi rents a car for d days. He pays m dollars per day for each of first 7 days,and half that rate for each additional day. Find total rate, if d greater than 7?

**Math**

If p pounds of potatoes cost $k,find the cost (in cent) of one pound of potatoes.

**Math**

How many passengers can be seated on a plane with r rows, if each row consists of d double seats and t triple seats?

**Math **

David had d dollars. After a shopping trip, he returned with c cents.how many cents did he spend?

**Math**

How many ounces are there in p pounds and q ounces?

**Math**

A car run until the gas tank is 1/8 full.the tank is then filled to capacity by putting in 14 gallons.the capacity of the gas tank of the car is........?

**Math**

I have worked again for this problem .please check this. 1-1/3-3/4 (2/3)=1/6. I think this is correct. Please check it.

**Math**

I have same opinion as you have told. I have worked on it and answer is -1/12.please tell me what sense gives answer.

**Math**

If 1/3 of the liquid contents of a can evaporates on the first day and 3/4 of the reaminder evaporates on the second day, the fractional part of the original contents remaining at the close of the second day.......?

**Math**

Sorry I have no idea. I have posted as,as it is given in mathematics manual. So, how shall i solve it. please help me.

**Math**

The number of half pound packages of tea that can be weighted out of a box that hold 21/2 lb.of tea is.........?

**Math**

This problem gives me no sense. There is nothing missing, i have written as, as it is given in manual. So, what will its solution?

**Math **

One half of the employees of ICI Co earn salaries above 18000/=annully ,one this of the reaminderr earn salaries between 15000 /= and 18000/=.what part of the staff earns below 15000/=?

**Math**

Jason won some goldfish at the state fair.during first week,1/5 of them died, and during second week, 3/8 of those still alive are the end of the first week died.what fraction of the original goldfish were still alive after two weeks?

**Math**

If John has p hours of homework and has worked for r hours, what part of his homework is yetc to be done? Solution:(p-r)/p or1-r/p am I correct?

**Math**

If a man's weekly salary is x and he saves y dollars, what part of his weekly salary does he spend?

**Math**

When 300 pupils are in a lecture hall,only 2/3 of the seats are occupied. How many seats are there?

**Math**

One day at ABC high school, 1/12 of the students were absent,and 1/5 of those present went on field trip.if the number of the students staying in school that day was 704,h0w many students are enrolled at ABC high?

**English **

The sun rose before I got up. Please tell me error in this sentence. Help me in the use of preposition how i improve it.any notes of English so i can improve for tests.

**Math**

The average noon temperature in Sydney in january is 32 degree c .the average midnight temperature in bostone in January is -12 degree c.what is the temperature difference between two cities?

**Math**

Please explain why you have subtracted 56.

**Math**

Lily was born in 100Bc and was 56 years old when she died .in what year did she die?

**Math**

Sana was born in 20 Bc and died in AD 42 (or CE).how old was she when she died?

**Math**

Highest temperature was 58degree c and lowest temperature was -88 degree c.what is the temperature deference?

**Math**

A biology class has 12 boys and 18 girls .what fraction of the class are boys? Solution. 12/30=2/5 Please tell me this correct or not.

**Math**

OK this i understand but how will I find reaped digit when i will change the fraction into recurring decimal that reaped digit is 9,8,7,6,5 in this case.

**Math**

I have worked on a) but on checking answer does not satisfied a). my answer is 2223/90000=0.0247 Please check this.

**Math**

Express the recurring decimal into fraction. a)0.02469999999... b)123.76111111... c)542.8888888... d)789.456456456...

**Math**

If one root of the equation x^2-px+20=0 is 4,while the equation x^2-qx+p has equal roots, then possible value of q is. A)3. B)4. C)5. D)6. I think 6 is correct. Please check it.

**Math**

Sarah bought bananas,apples and pears.the ratio of bananas to apples was 3 to 5 and the ratio of the apples to pears was 2 to 1.she bought 10 apples.how many pears did she buy?

**Math**

The product of three consecutive integers is 21 more than the cube of smallest integer.the smallest integer is.A.-3 B.-4 C.-5 D.-6

**Math**

(10)^20, (-20)^10, (20)^-20, (-30)^19 , (-20)^-10 , (-19)^-19 .how many positive and negative numbers from these?

**Math**

2log(4/x)=?

**Math**

What is The mean proportonal between 100 and 160

**Math**

A map is drawn to a scale of 1:3000.two points on the map are 9.5cm apart .what is the actual distance between the points?

**Math**

The price of a table was Rs 1000.it was first increased by 30%.after a week the shop owner decreased the price by 25%.what is the new price of the table.

**Math**

Find Solution set of underrootx=6x.here under root x means positive square root of x.

**Math**

The quotientire and reminder are x-2 and -2x+4 respectively when the polynomial x^3-3x^2+x+2 is divided by g(x) find g (x).

**Biology **

The body at higher temperature but having low amount of heat gives more severe pain of hotness than a body at low temperature but having high amount of heat. Give some examples.

**Math**

A salesman sold a book at 5%of the marked price instead of discounting the marked price by 5%.If he sold the book for Rs.4.20,what was the price for which he should have sold the book?

**Math**

Arid buys 2750 eggs For $100 and loses 350 of those .If he sells the remaining eggs at 70percents/dozen,what percent of his original investment is his profit?

**Math**

Aslam buys 30 cows for an average of Rs.900. He buys 12 more by bringing the average cost to Rs.875. How much did the recent purchase cost him?

**Math**

The cost price of an article which on being sold at a gain of12% yields Rs.6 more than when it is sold at a loss of 12%,is

**Math**

If 1/2 x years ago Adam was 12,and1/2 x years from now he will be 2x years old,how old will he be 3x years from now?

**Math**

Jenny, ken and Ben have total $390.jen has 5 times as much as Ben, and ken has3/4 as much as jen .how much money does ken have?

**Math**

Two automobiles travel in the same direction at 40 miles per hour and 50 miles per hour, respectively? How many hours after they are alongside of each other will they be 18 miles apart.

**Math**

Avi drove from his home to college 60 miles per hour. Returning over the same route, there was a lot of traffic, and he was only able to drive at 40 miles per hour. If the return trip took one hour longer, how many miles did he drive each way.

**Math**

At what time a train travelling at 50 miles per hour arrives at the station, if it is the 5 miles from the station at 5:00 pm.

**Physics**

2 charge of 10 microcoulomb and 40 microcoulomb respectively 12cm apart find the position of a point where electric field is zero

**Math**

Olivia is three times as old as her sister.After three years,she is two years more than twice of her sister age.Then what is Olivia present age?

**math**

a man bought 360 eggs at rs 12 per dozen. 60 eggs were broken and 30 were rotten. find his profit and loss percent . if he sells the rest of the eggs at rs 15 per dozen.

**123**

plz halp on hw quik

**math**

A long wire of some length is cut into small pieces of 216 cm, leaves a small piece of length of 89 cm. if this part were cut into equal pieces each of 18 cm, the length of the of the leftover wire would be:

**english**

what are the factors that causes diversity in language?

**FINANCE**

Six years ago the Singleton Company issued 20-year bonds with a 14% annual coupon rate at their $1,000 par value. The bonds had a 9% call premium, with 5 years of call protection. Today Singleton called the bonds. Compute the realized rate of return for an investor who ...

**Math**

The probability that it rains tomorrow is 0.14. What is the probability that it doesn't rain tomorrow?

**Science**

2 racing cars of masses m1 and m2 are moving in circles of radii r1 and r2 respectively. Their speeds are such that each makes a complete circle in same time t. The ratio of Angular speed of the first car to the second car is?

**Science**

a tank 2m high is half filled with water and then filled to the top with oil of density 0.8 g/cc . what is the pressure at the bottom of the tank? g= 10m/s2

**english**

story on talented boy

**physics**

A ball is projected horizontally from the top of a building 19.6m high.if the line joining the point of projection to the point where it hits the ground makes an angle of 45° to the horizontal what is the initial velocity of the ball

**geography**

why are weddings usually planned in summers in villages?(beacause of the earth's revolution).