# Maths Revision: Answers

**Algebra**

1. X=-5,-1,5/3,3

2. -1<x<-1/2

3. Imaginary roots.

4. x≤0 or x≥4

5. a<-1/8

6. x=2,-1

7. x=0,3,8.

8. X=5/4

9. X=3, y=-9.

10. Before: A=Rs. 2800; B=Rs. 2090, After: A =Rs.2720 and B=Rs 2100.

14. (a) A’(-5,1) B’(3,-3) (b)1:3

15. A”(-2,-1) B”(1,-3) C”(2,2)

**Co-ordinate Geometry**

1. 8x-23y+39=0

2. X+2y-4=0

3. 3x-2y=12.

4. (2,3)

5. (5,4)

6. 9x-2y+1=0

7. x/6+y/10=1

8. . 5x=8y+13=0

9. (-10/9,49/27)

**Trigonometry.**

1. 90 deg, 30 deg

2. 30 degrees.

3. ½

4. 30 degrees

5. 30 degrees.

6. 87.84m

7. 34.64m, 20m.

8. 819.6 mts.

Why no answers on geometry?? Also the prove sums are not solved. Quite difficult u know

Hello Sir….

Pls help me in Trigonometry last qns…….A prove………Pls solve or give some hint so that i can follow……..Pls reply soon………its urgent…….

Thank you for your kind cooperation….

sir

I am rather confused with answer to Q3 of Trigonometry.

My answer is 3.732

pl help me