CBSE math
CBSE maths CBSE Sample Guess Question Papers CBSE hindi social science results X X11 syllabus
Here you get answers of your CBSE mathematics 1X and X questions by our experienced teachers. To ask a question click here
Answer1. A Linear equation in two variables is an equation with two variables (for eg. x and y)each having exponent 1.(eg. x + 2y = 4)
Question2. When I plot x - y = 10 and 2x - 3y = - 20 on graph I get almost parallel lines but on solution I get an answer. How to get an answer on graph ? by simran X 18 Dec 2006
Answer2. For these types of equations the scale has to be adjusted to a bigger value for example 1cm. = 10 units, using this scale you will get intersecting lies.
Question3. How to solve 1/x+a+b = 1/x +1/a +1/b ? by Ajay class x 19 Dec 2006
Answer3. 1/x+a+b - 1/x = 1/b + 1/b
x - (x + a + b)/x(x + a + b) = (a + b)/ab
- (a + b)/x(x + a + b) = (a + b)/ab
- 1/x(x + a + b) = 1/ab
cross multiply and solve now
Question 4. Find p(x) and q(x) which are quadratic polynomials if LCM is x^3 - 6x^2 + 11x - 6 and HCF is x - 2. by Rishabh class x 20 Dec 2006
Answer 4. p(x) = x^2 - 5x + 6, q(x) = x^2 - 3x + 2 or q(x) = x^2 - 5x + 6, p(x) = x^2 - 3x + 2
Question 5. How many questions are expected from Instalments? by harjot singh class x 21 Dec 2006
Answer5. We get 2 questions one from S.I. and the other from C.I. which carry 2 and 3 marks.
Answer6. Here we find the coefficients of x and y have been interchanged in the two equations, in such cases we once add the
equations and once subtract them
adding the equations we get 54x + 54y = 54 which reduces to x + y = 1 ......i
subtracting the equations we get 8x - 8y = 24 which reduces to x - y = 3 ......ii
further adding i and ii we get 2x = 4 which gives x = 2 and y = - 1
Question7. I am very weak in mathematics I failed in the Dec exams. Which topics should I do to at least get passing marks? sahil class x 24.12.06
Answer7. Dear sahil don not worry, you can easily pass in CBSE board exams 2007. For details of easy topics see our page ' pre exam tips' click here
Question8. Solve for x and y, 6x + 3y = 7xy, 3x + 9y = 11xy (given x,y not equal to 0)by Meena x 25.12.06
Answer8. 6x + 3y = 7xy ......i
3x + 9y = 11xy ....ii
(i)*1 - (ii)*2 gives us 15y = 15xy which reduces to x = 1
substituting x = 1 in equation i we get y = 3/2
Detailed solution will be sent to you by E mail within 1 - 2 days
Question9. The dimensions of a rectangular box are in the ratio 2:3:4 and the difference between the cost of covering it with sheet of paper at the rate of Rs.4 and Rs. 4.50 per square m is Rs.416. Find the dimensions of the box. by Prabhat Aditya class x answered on 2.12.2007 at 9 a.m. I.S.T. (+5.5 G.M.T.)
Answer9. Let the sides be 2x, 3x and 4x in metres. S.A. = 2(lb+bh+lh) = 52x square metres
52x square(4.5 - 4)= 416
x square = 16
x = 4
length = 2*4 = 8m, breadth = 3*4 = 12m and height = 4*4 = 16m
Question10. Prove that the sum of the angles in the four segments exterior to a cyclic quadrilateral is equal to six right angles. by Amitanshu Vishal cbse maths x answered on jan 3 2007 at 8:00 p.m. I.S.T.
Answer10. Let ABCD be a cylclic quadrilateral. angles AEB, BFC,CGD and DHA are in respective segments.
of AB, BC, CD and DA. Join diagonal AC.
angle H + angle ACD = 180 ........(i) (opp. angles of a cyclic quad.)
angle E + angle ACB = 180 .........(ii)
angle F + angle BAC = 180 ........(iii)
angle G + angle CAD = 180 ........(iv)
adding (i), (ii), (iii) and (iv)
we get the answer.
Question11. From where can I get Lab Manual Maths class X by sushant class x answered on jan 4, 2007 at 6:30 pm I.S.T.
Answer 11. Click here
Question12. I also needed class x maths lab manual which I was able to download from your site. I have a maths practical and I need to prepare any 4 activities. Can you suggest me please 4 easy ones. by Abhishek class x answered on jan 5, 2007 at 8:28 a.m.
Answer12. Prepare activities 1, 9, 12 and 15
Question13. We have been asked to prepare 5 activities. Please suggest 1 more activity. by Ravikant class x answered on jan, 6 2007 at 6:00 p.m. I.S.T.
Answer13. You can prepare activity 2 (from A.P.) . For the above activities before going to examination hall try the activity by
cutting and pasting once at home.
Question14. Find the sum of all multiples of 9 between 300 and 700. by Krithika class x, answered on jan 7, 2007 at 12:12 p.m. I.S.T.
Answer 14. The A.P. formed is 306, 315, 324, .......... , 693
Here first term = a = 306, common difference = d = 9 and last term = l = 693
693 = 306 + (n - 1)9
77 = 34 + n - 1
n = 44
Sum = n/2(a + l)
= 22(306 + 693)
= 21978
Question15. I want latest CBSE maths sample papers. by Kapil Dev Negi class X answered on Jan 8, 2007
Answer15. CBSE maths sample papers are available here. click here