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CBSE Class 10 Answered

2x-y-4=0 &x+y+1=0 graphically
Asked by Shantha13ask | 12 Aug, 2018, 07:52: PM
answered-by-expert Expert Answer
begin mathsize 16px style 2 straight x space minus space straight y space minus space 4 space equals space 0 rightwards double arrow 2 straight x space minus space straight y space equals space 4 If space straight x space equals space 0 space then space straight y space equals space minus 4 space and space If space straight y space equals space 0 space then space straight x space equals space 2 Taking space points space left parenthesis 0 comma space minus 4 right parenthesis space and space left parenthesis 2 comma space 0 right parenthesis space on space the space straight x minus straight y space plane comma space draw space straight a space line space 2 straight x space minus space straight y space minus 4 space equals space 0 straight x space plus space straight y space plus space 1 space equals space 0 straight x space plus space straight y space equals space minus 1 If space straight x space equals space 0 space then space straight y space equals space minus 1 space and space If space straight y space equals space 0 space then space straight x space equals space minus 1 Taking space points space left parenthesis 0 comma space minus 1 right parenthesis space and space left parenthesis negative 1 comma space 0 right parenthesis space on space the space straight x minus straight y space plane comma space draw space straight a space line space straight x space plus space straight y space plus straight z space equals space 0. The space point space at space which space both space the space lines space intersect space is space the space solution space of space the space two space equations. end style
Answered by Yasmeen Khan | 13 Aug, 2018, 01:18: PM

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CBSE 10 - Maths
(SinA/1+CosA + 1+cosA/sinA) (sinA/1-cosA - 1-cosA/sinA)=4cosecAcotA    
Asked by prasadshruti9999 | 03 Jun, 2023, 10:05: AM
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CBSE 10 - Maths
cot2 30-2cos2 60-3/4sec2 45-4sec2 30
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CBSE 10 - Maths
find the zeroes of the quadratic polynomial and verify the relationship between the zeroes and the coffiecient 4u+8u
Asked by dimpaldihingia2 | 24 May, 2023, 06:10: PM
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CBSE 10 - Maths
if sin theta = root3/2, find the value of all t- ratios
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CBSE 10 - Maths
If α and β are tge zeros of the polynomial x^2 - 6x + k and 3α + 2β=20 , then the value of k is
Asked by ruchipandey20071978 | 21 May, 2023, 10:00: PM
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CBSE 10 - Maths
If one of the zeros of the quadratic polynomial (k - 1)x^2 + kx + 1 is -3, then the value of k
Asked by ruchipandey20071978 | 21 May, 2023, 09:57: PM
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CBSE 10 - Maths
If the sum of the zeors of the polynomial f (x)=2x^3 - 3kx^2 +4x - 5 is 6 , then the value of k is
Asked by ruchipandey20071978 | 21 May, 2023, 05:32: PM
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CBSE 10 - Maths
If two zeros of x^3 + x^2 - 5x - 5 are √5 and - √5, then its third zero is
Asked by ruchipandey20071978 | 21 May, 2023, 05:29: PM
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CBSE 10 - Maths
The value of k for which the system of equestions kx-y=2 and 6x-2y=3 has a uniqe solution is..
Asked by ruchipandey20071978 | 11 May, 2023, 06:55: AM
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CBSE 10 - Maths
a regular polygon has 20 sides. how many triangles can be drawn by using the vertices but not using the sides?
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