# Posts by abc

Total # Posts: 144

**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).

**chemistry**

Xyz

**physics**

A tank of compressed helium for inflating balloons is advertised as containing helium at a pressure of 2374 psi, which, when allowed to expand at atmospheric pressure, will occupy a volume of 194 ft3. Assuming no temperature change takes place during the expansion, what is the...

**Mechanical Behavior of Materials**

-(P*l_AB^3)/(3*E*I)

**Mechanical Behavior of Materials**

answer is 1.393

**Mechanical Behavior of Materials**

answer is 600000

**Mechanical Behavior of Materials**

600000

**2 Math Questions**

Sorry about the long name

**Finance**

Honey well international zero coupon bonds par value $1000 mature on April 21, 2012. Calculate the yield to maturity if an investor purchased one of these bonds on April 21, 2006, at a price of $650.

**Thermodynamics**

-180 69 C 563.5 550 550 b)

**Map Rectangle**

The scale of the map is 1:1000. What are the actual dimensions of a rectangle which appears as 4cm by 3cm on the map? What is the area on the map in cm2. What is the actual area in m2.

**Map to sacle**

The 17th hole at the famous St Andrews golf course is 420m in length. how long will it appear on a plan of course of scale 1:8000?

**math**

The 17th hole at the famous St Andrews golf course is 420m in length. how long will it appear on a plan of course of scale 1:8000?

**Astronomy**

1. 10^12 2. 30

**physic**

A cylindrical conductor of length l and uniform area of cross-section A has resistance R. What is area of cross section of Another conductor of the same material of length 2l and resistance R ?

**Maths Probability**

Ans for 3, 5 and 6? Anyone?

**Maths Probability**

3. 1.5 is incorrect :(

**Astronomy**

2.089*10^28

**Probability**

Let Zi=13Xi+23Xi+1 for i=1,2,…, and let Mn=1n∑i=1nZi for n=1,2,…. What value does the sequence Mn converge to in probability? Ans: 2

**Math**

When fX(x) = {2e−2x,if x>0, 0, otherwise, we have fY(y) = {g(y),if a<y, 0, otherwise. Give a formula for g(y) and the value of a using the standard notation. g(y)= a=

**Math**

When fX(x) = {1/3, if −2<x≤1, 0, otherwise, we have fY(y) = {g(y),if a<y≤b, 0,otherwise. Give a formula for g(y) and the values of a and b using standard notation. (In your answers, you may use the symbol 'e' to denote the base of the natural ...

**Math**

P(X>0.75)= 0.2266 P(X≤−1.25)= 0.1056 Can't figure out these: E[Z]= var(Z)= P(−1≤Y≤2)= anyone?

**Math**

Let X and Y be normal random variables with means 0 and 2, respectively, and variances 1 and 9, respectively. Find the following, using the standard normal table. Express your answers to an accuracy of 4 decimal places. P(X>0.75)= P(X≤−1.25)= Let Z=(Y−3)/4...

**Probability**

Let X and Y be normal random variables with means 0 and 2, respectively, and variances 1 and 9, respectively. Find the following, using the standard normal table. Express your answers to an accuracy of 4 decimal places. P(X>0.75)= P(X≤−1.25)= Let Z=(Y−3)/4...

**probability**

anyone know the answers to this?

**Probability**

has anyone figured out the answer for (c)??

**chemistry**

use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution prepared by mixing equal volumes of 0.20 M NaHCO3 and 0.10M Na2CO3.(Ka=5.6x10^-11). how would you prepare NaHCO3-Na2CO3 buffer solution that has the pH of 10.40.

**Calculus**

¡ìdx/(x^2-1)^2

**Calculus**

¡ì(up:1 down:0) (x^3 dx)/(x^2+2x+1)

**Calculus**

y"-y'=sin x solve in undetermined coefficients

**probability**

Before leaving for work, Victor checks the weather report in order to decide whether to carry an umbrella. The forecast is “rain" with probability 20% and “no rain" with probability 80%. If the forecast is “rain", the probability of actually ...

**probability**

P(A) = 4/9 P(C) = 0 P(D) = 3/4 Anyone know the solution for the below?: P(B) P(A∩B) P(A∩D)

**probability**

P(D) = 0.75

**Physics Classical Mechanics Help ASAP**

fred for temp of 5 degrees celsius b) 55465.76 c) 24 percent

**Physics Classical Mechanics Help ASAP**

c) 24 percent

**chemistry**

Knowing that the energy associated with the formation of 1 mole of vacancies in copper (Cu) is 104 kJ, determine the vacancy density (nv/cm3) in Cu at 1085 K. Assume the pre-exponential factor is one. unanswered

**chemistry**

A p-n junction is obtained at a depth of 3 x 10-3 cm below the surface by diffusion of antimony (Sb) into p-type germanium. What is the donor concentration in the bulk germanium if the diffusion is carried out for three hours at 790 C? Express your answer in number of donor ...

**chemistry**

The Young's modulus for a material is 15.0 x 10^10 N/m2. The material is stretched to a strain of 6.0 x 10^-3. How much elastic energy will be expended? (Express your answer in J/m3)

**chemistry**

The Young's modulus for a material is 15.0 x 1010 N/m2. The material is stretched to a strain of 6.0 x 10-3. How much elastic energy will be expended? (Express your answer in J/m3)

**chemistry**

Knowing that the energy associated with the formation of 1 mole of vacancies in copper (Cu) is 104 kJ, determine the vacancy density (nv/cm3) in Cu at 1284 K. Assume the pre-exponential factor is one. unanswered

**Physics Classical Mechanics**

have you got answer of any one of your questions????? :p

**Quantum Physics**

what about others, please help rs and others..........

**Quantum Physics**

Q7 and 8 please

**indian springs**

plzzzz answer this question

**Math**

Five weeks is how many seventy-thirds of a year

**math calculus (please help me)**

The marginal cost of a product is modeled by dC/dx= 16/cube root 16x + 3 where x is the number of units. When x = 17, C = 120. (a) Find the cost function. (Round your constant term to two decimal places.) c= (b) Find the cost of producing 90 units. (Round your answer to two ...

**eonomics**

c. market forces

**math 160(buss 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 ...

**physics**

its wrong!!!! tell the correct answer

**physics**

its wrong,,,,,,, tell the correct answer

**Maths**

thanxxxx

**Quantum Physics**

@abc did you got question 8D?

**Quantum Physics**

Anonymous, did you get all solutions for Q 7 and 8 except 8(D). If yes then please share......

**physical**

An electric field with a magnitude of 3.50 kN/C is applied along the x axis. Calculate the electric flux through a rectangular plane 0.350 m wide and 0.7 m long assuming that (a) the plane is parallel to the yz plane; (b) the plane is parallel to the xy plane; (c) the plane ...

**physics**

A particle starts moving with acceleration 2 m/s2. distance travelled by it in 5th half second is..??

**Maths-Query**

abc

**lab**

How much 38%Hcl will be used to prepare N/3.05 solution in 2litre water.

**Biology**

bacteria