Kaur

This page lists questions and answers that were posted by visitors named Kaur.

Questions

The following questions were asked by visitors named Kaur.

what is the heat of reaction when 1 mole of gaseous hexane, c6h14 undergoes combustion as in following equation c6h14+19/2o2=6co2+7h2o a) -5221kj b)-38887kj c)-468.2kj d)+163.2KJ

if x+y=0 then -y is known as negative of x where x and y are rational numbers. State true or false and explain why if its true and if its false why?

If f(x)= (4cos^4x+2cos^2x+2sin^2x-x^9-1/2cos4x)^(1/9). Find f(f(2))

If you multiply 6 by an even number, the answer will end with the same digit. The number in the ten's place will be half of the number in the one's place. What are the factors and their product?

if relation r1 and r2 from set A to set B are defined as r1{(1,2),(3,4),(5,6)} and r2 ={(2,1),(4,3),(6,5)}, then n(AXB)

if relation r1 and r2 from set A to set B are defined as r1{(1,2),(3,4),(5,6)} and r2 ={(2,1),(4,3),(6,5)}, then n(AXB) Options A)35 B)91 C)53 D)55

If a variable plane in 3-D space moves in such a way that the sum of its reciprocal of intercepts on the x and y-axis exceeds, the reciprocal of its intercept on the z-axis by 2, then all such planes will pass through the point:

the roots of the equation (ab-1)x²+(a+b)x-ab=0 are always a) real b) equal c) complex d) cannot be determined

Range of 1/[root(x^2-4)]

Range of 1/[root(x^2-4)] I solved in following way.. kindly check its right or wrong First, I converted x in terms of y as follows x=root[(1+4y^2)/y^2] f^-1(y)=root[(1+4y^2)/y^2] f^-1(x)=root[(1+4x^2)/x^2 ] Where (1+4x^2)/x^2>=0 This inequality is true fo...

abcd is a parallelogram.if the line joining the mid-point of side bc to vertex a bisects angle a,then prove that bisector of angle b also bisects ad

abcd is a parallelogram.if the line joining the mid-point of side bc to vertex a bisects angle a,then prove that bisector of angle b also bisects ad Hint Consider BG as the angle bisector of B that meets AD at G. Now, you have to prove that G is the mid...

AA × AA = BOB, A^A= A × A, PP × PP = PAP. If each letter in the given equations stands for a number between 1 to 9, what is PP × AA?

If Triangle A is similar to triangle B, and triangle C is similar to Triangle A, then is Triangle C similar to triangle B ??

The interest on rs 200 for 1 year is rs 15. Plot interest for different annual periods

Construct a quadrilateral ABCD, when AB=5 cm, BC= 6 cm, DC= 5.5 cm, AC=4 cm and BD=4.5cm. Is it a concave polygon??

Please explain how it is concave Construct a quadrilateral ABCD, when AB=5 cm, BC= 6 cm, DC= 5.5 cm, AC=4 cm and BD=4.5cm.

Cube root of (39+20root2) + Cube root of (39-20root2)

Range of 4cos^6x+(1/2)

of 75 people with cell phones ,42 take pictures with their cell phone and 36 use their cell phone to take pictures and send message.how many use their cell phones to text to send messages??

If a fifth degree polynomial is divide by a third degree polynomial,what is the degree of the quotient

A kg of dalandan in fruit stand x cost 55.00. If Jessica bought 3 kilograms, how much did she spend?

. Two friends Kallis work separately they work of levelling, alternately for one Kallis and Clerk take up the work of levelling the field. If they stely they take 8 hours and 12 hours respectively to finish the muelling the ground. They decide to finish t...

Which row in the table below contains a number that is a multiple of 9 and another that is a perfect square? A - 45 80 65 39 B - 33 25 79 61 C - 8 27 44 19 D - 64 32 85 108

If D is the mid point of side of side BC of a traingle ABC, P and Q are two points lying respectively on the sides AB and BC such that DP is parallel to QA. Prove that ar(triangle CQP) = 1/2 ar(traingle ABC).

Three friends A, B and C are walking at the speed of 3,4,5 km/hr respectively. They start at same place at 1,2,3 O’clock respectively. When B reaches A, he sends him back with a msg for C. At what time will C get the msg?

A man invested 25,000 pesos in two parts; one part was invested at 5% and the other at 7%, how much was invested at 7% if the income from both is 1,410 pesos?

Let a̅ = î− ĵ, b̅ = ĵ− k̂ & c̅= k̂ − i.̂ If d̅ is a unit vector such that a vector. d vector = 0 [b̅ c̅d], then find d̅.

MNC company employed 25 men to do the official work in 32 days. After 16 days, it employed 5 more men and work was finished one day earlier. If it had not employed additional men, it would have been behind by how many days? Just want to know At the end ho...

Is there any particular method for solving trigonometric functions in greatest integer function in lim x - 0 ( for sinx and tanx)

A man paid rs 315 towards a stereotype . a sales tax of 5% was also charged on original price of stereo system. The amount paid by him as tax is ????

Hi , I need help. I am starting my work related to art and craft. Can anyone suggest me the name?

If m = 1+(1/root3)+(1/root 5)+(1/root7)+........... and n = 1+(1/root2)+(1/root 4)+(1/root6)+... Then find m+n and m-n??

If f(x)= max{-x-2,-1,x-2} Tell this function is differentiable and continuous at (1,-1)????

The number of the positive integral of 2 xbaseto1 + 3 xbaseto2 + 4 xbase3 + 5 xbase to 4 = 25 , is

A man paid Rs. 800 for 100 hours a week as a basic pay and over time is paid 50% above the basic pay. If he gets Rs. 1000 as a salary at the end of the week including the over time, then how many hours does he work in the entire week?? Answer is 700/3 hou...

The number of positive integral solutions of 2x1+3x2+4x3+5x4=25 is? Options A) 20 B) 22 C) 23 D) none of these

consider the word multiple then in how many ways letters can be arranged that the total number of words using all the letters equals?

The number of ways in which the letters of the word MULTIPLE be arranged without changing the order of the vowels is

lim x tends to 0, [1+x(1+{f(x)/kx^2})] = e^3 and f(4)=64. Find the value of k.

what is the equation of straight line passing through intersection of lines 2x+y=3 and x+2y+5=0 , if the intercepts made by the line on positive x axis and positive y axis are in ratio 3:4??

Consider the circles x^2+y^2=1 and x^2+y^2-2x-6y+6=0. Then find the equation of a common tangents to a circles ???

Very urgent for how many integer values of k do the circle x^2+y^2 =k^2 and hyperbola xy=k may not intersect each other

The volume of a hemispherical shell of outer radius 7 cm and inner radius 3.5 cm is

Identify which of following are statements : a) Krishna is black . b) How black is Krishna?

If x^4+ax^3+bx^2+cx+d=0 has four positive real roots then A) ac+16d>=0 B) ac-16d<=0 C) b^2-36d<=0 D) b^2+36d>=0 Urgent plse asap

if the difference of the semi perimeter and the sides of triangle are 60m, 13m and 10m and the area of the triangle is 1344 m^2 Find the height of the triangle corresponding to the smallest sides of triangle Very very urgent

The sum of two numbers is 100. which of following could be new sum if one of number is rounded to nearest tens 110 105 94 90 Very urgent ..plse help

If A-B perpendicular to A and |A-B|=B/2 What is an angle between A and B Question is from vector chapter Plse help

If a+(1/a)=23 Find a^(1/4) + b^(1/4) Options Root 17 Root 19 23^(1/4) None of these

If A={x:x is multiple of 10 , x < 20} B={x:x is multiple of 5, x <15} Find n(A)- n(B)??

If arc PQ,QR,AND PR ARE MINOR ARCS THEN TRIANGLE PQR IS A ----TRIANGLE ,ACUTE OR OBTUSE Urgent plse

If arc PQ,QR,AND PR ARE MINOR ARCS THEN TRIANGLE PQR IS A ----TRIANGLE ,ACUTE OR OBTUSE Urgent plse I didnt understand its solution

sum of series 497.3+495.3+493.7+.....+3.497

What is the least number that can be added to 14639 to make it a perfect square

If the mean of 45 observations is 49. If 3 is added to 10 observations and 5 is subtracted from other 10 observations. Find the new mean. Very urgent

Four rational numbers between 0.1 and 0.11111.....?? Very urgent

Each of three sets A,B,C has exactly 3 elements. A−B={1,5}; B−C={2,4}; C−A={3,7}. Find A,B and C.

Mallica has two flower beds in her garden. One has 18 rows and other has 24 rows. Both flower beds have same number of flowers. What is the least number of plants in each flowerbed? answer) : 18 = 2 × 3 × 3 and 24 = 2 × 2 × 2 × 3 So, LCM ( 18 and 24 ) = 2...

Mallica has two flower beds in her garden. One has 18 rows and other has 24 rows. Both flower beds have same number of flowers. What is the least number of plants in each flowerbed?

Is it always necessary for a quadrilateral to be inside a circle, in cyclic quadrilateral????

There are 2% defective nuts in a large bulk of nuts Write the probability distribution for getting defective nuts in a random sample of 10 nuts

integrate 1/[root(2x^2+x-3) ] dx Urgent

Solve (root10+root18)/(root8+(root(3-root5))) Urgent

Find the values of x ((root(x-3))/(x-2)>0 Urgent

why it is not polynomial (x-1)/(x+1) Urgent

Solve the inequality x^(-1/4)<-1/2 Please fast

Solve the inequality x^(-1/4)<-1/2 Urgent

Limit x tends to 1, (1+sinpix)^(cotpix) Urgent

the number of possible matrices of order 2*3 with each entry 0, 1 or 2

the number of students in a certain school is 600 and 2/3 of its boys. What is the no. Of girls in school

a task of 30 man days was done by group of men in 5 days. if total salary paid to all of them was rs. 36000 Whats the salary paid for one man Urgent

Write a quadratic polynomial each with a>0 and a<0. Draw the graph

Find the value of p, for which one root of the quadratic equation px^2 -14x + 8 = 0 is 6 times the other.

The converse of the contrapositive of the conditional p→∼q is :

Riya made 5/6l of strawberry shake. then she poured it equally into some glasses. if each glass contains 3/18 of the strawberry shake ,find the no of glasses

find the length of diagonal of a hexagonal prism if the length of each side is 2r ?

find the length of diagonal of a hexagonal prism if the length of each side is 2r ? Explain briefly

If a hexagon is placed over other hexagon and there is a little space between them then what is the length of diagonal of the resulting structure if the length of each side of hexagon is 2r ?

find the length of diagonal of a hexagonal prism if the length of each side is 2r ? Explain briefly... as I didnt get how root 3 came

If 'm' is the square of a natural number 'n' , then n is _________.

The dimensions of a rectangular plot of land are 23.5 m and 16.8 m. Find the area of the plot. If the entire plot is to be fenced, what is the length of the wire required ?

If x+y+z=7 and 1/x + 1/y + 1/z =10+xyz ,then find the value of x^2+y^2+z^2+1

Rate conversion is rupee 1= 0.016 dollars. How many dollars would you get in exchange of rupees 1600?

Draw a “more than type “ cumulative frequency curve for the following distribution and hence find median: Class Interval 100-150 150-200 200-250 250-300 300-350 350-400 Frequency 49 62 33 39 45 40

find the vector equation of line passing through the point 2,0,0 and parallel to line r=lambda k

Find domain and range of F(x)= root(x^2+4x+3)

A deck of cards with all the alphabets written on them is put in a box. What are the possible outcomes of picking up a vowel cards?????

Find increasing and decreasing function for f(x) = (x^3-4)/(x^2) Urgent

if alpha is S......of ax^2+bx+c=0 then a(alpha^2)+b(alpha)+c=0 Urgent

Three numbers are chosen at random from 1 to 15. Probability that no two numbers are not consecutive

Three numbers are chosen at random from 1 to 15. Probability that no two numbers are consecutive is Very urgent

the complete solution set of x which satisfy the inequality [4/(x-2) ]>=[3/(2x-1)]

if 5 is added to each observation of data what will be the difference in the median Fast please

Find the angle between hour-hand and minute-hand in a clock at quarter to six

sin^-1(sin18pi/7)= ?

Raju read 32 pages from a book containing 150 pages. Prachi read (2/5) part of the same book. Who read more pages and how many???

Find the maximum and minimum value of f(x)=4x^3 -18x^2+27x -7

the function f:R....R defined as f(x)=(x-2)(x-3)(x-4) is

Urgent very Solve inequality (1+(1/logx))<0

Answers

The following answers were posted by visitors named Kaur.

a) the probability that at least 1 doesnt use a computer at work Because the question asks for at least 1 that doesn't we have to do the opposite complement. P(E)=1-P(complement) Probablity of not using computer(NUC)=1 - Probability of using computer P(NU...

Options are a) 35 b)91 c) 53 d) 55

Kindly help and its very urgent

Are you sure ?? I mean is something wrong in statement

Thank u So answer will be (1/2,1/2,-1/2)

I got the x in terms of y And its y=root[(1+4y^2)/y^2] Its range should not be (- infinity ,+ infinity)

Sorry its x=root[(1+4y^2)/y^2] f^-1(y)=root[(1+4y^2)/y^2] f^-1(x)=root[(1+4x^2)/x^2 ] Where (1+4x^2)/x^2>=0 This inequality is true for any real values of x. So, its range should not be (- infinity ,+ infinity) Kindly check my solution again

I mean how to solve

Okay. I have to only write how they are similar . Only reason. Not to solve and show . Is it possible that we can show it??

Okay Can you just confirm me following points I mean we just need to assume Principal=rs100, r=7.5%pa and time 1 year Then find simple interest= rs 7.5 Then all values except time is same and then we need to plot a graph

How? Please explain

I dont understand what you have replied

Kindly reply anyone

if my teacher ask me how 20/24 came ?? How 1/6 came?? How will I explain???

If m = 1+(1/root3)+(1/root 5)+(1/root7)+........... and n = (1/root2)+(1/root 4)+(1/root6)+... Then find m+n and m-n??

The number of the positive integral of 2x + 3y+ 4z+ 5m= 25 , is.

What about differential???

Somewhere here Kindly solve

Didnt understand This sum is from permutations and combinations Plse help

I didn't understand Plse help me

So the answer is 12x+9y=5

My answer is 4x-3y-5=0

So what's the use of this line difference of the semi perimeter and the sides of triangle are 60m, 13m and 10m

But here all PQ, QR and PR are minor arcs??

239 is answer???

Can anybody guide me in giving correct answer

So power of polynomial cannot be in minus form. So its not a polynomial??? Am I right

No its not cube root Sinx - (root3)(cosx)

I dont know how to use power series

I know. I apologize... but that page is not opening thats why I posted again

I have solve till here Not getting after this Plse help

600 times the original one????

@oobleck Kindly reply

So 3360 is final answer???? Am i right or wrong?????

It should be 1/4 ÷ 1/20 ??????

Thank you ... I have done just want to sure that my answer is correct

Thanks, I got the same

Isn't it should be 300×(18/12)??????

Sorry dear. Actually nobody answer again on the same post. And secondly there is an image regarding the question but I dont know how to post it. But if you will search on google the same question, figure can be seen.

I didn't understand dear

I got n = 0 , 1 which satisfy the given equation

I mean total number of values that satisfy given equation is 2. As theta belongs to interval 0,2pi Am i right or wrong??

Can you show graphically

How come 42 number

It was wrong solution

How 3/4 came?? Kindly explain @oobleck

@mathhelper To calculate h , Do we need to subtract volume of cylinder - volume of hemisphere Or your way is right?????

Sorry dear, @ oobleck, i didn't understand 3/4 concept

@mathhelper 24025 - 23075 = ????

@ mathhelper And we got 950 .. AM I right or wrong dear??? And last one Find number of soldiers in each row?? We have to show square root of ???

Kindly help as I am not able to solve last part @mathhelper @oobleck

@oobleck Plse help

So i got p = +- q Then q = +-1/root3 , then p also same , when p = q When p = - q, then q= +- i Hence p = - + i AM I RIGHT OR WRONG @oobleck

@mathhelper I got 0.4pi m^2/sec

How to find coordinates of C is not clear to me??? Plse guide

@oobleck Answer is 7

Arjun randonly draws a highlighter from a pencil case with two yellow highlighters, three blue highlighters, one green highlighter and four pink highlighters. What the odds of Arjun drawing a yellow highlighter? THIS IS CORRECT QUESTION Please ignore firs...

Dear @oobleck I have done but i want to cross check if mine answer is correct or not. Next time, i will try to post mine answer too... Thank you so much

So i got 0.16 Am I right or wrong???

a) 6/19 b) 10/19 @oobleck am I right or wrong???

Thank you so much

After solving i got P( A ) wins = 6/11 And P(B) wins = 5/11 Am i rightor wrong

Sorry didnt get it and i got confused for both parts.

So answer is 3 days

9 integers @oobleck am i right or wrong

Sorry dear Didn't understand any step

Sorry dear Didn't understand Kindly explain in another way Please

Formula is not clear

But its very difficult to solve 1.00667^12 - 1 part

Is the equation written wrong or it cannot be solved?? Please help and answer

It means both cannot be negative????? Am i right???

I have curiosity to solve different types of sums from different sites. Sometimes I stuck so I take help of you friends. Sometimes I know solution but want to know if there is another method or not. I am really thankful to you all who everytime helped me.

Rolling two dice = 36 So , if they are rolled 20 times = 36 × 20 = 720 a) 30/720 b) 52/720 Am i right ????

@oobleck plse see is it right or wrong

@oobleck 8% p.a. compounded semi-annually is discounted rate

It should be 1.03

@oobleck . Kindly reply