Question

17. Find the 25th term of an arithmetic progression 2, 6, 10, 14,
18. Find the sum of first 20 terms of the arithmetic progression 3, 8, 13, ....
using the formula.
OR
Find the sum of the first 30 positive integers divisible by 6.
19. Solve: 3x + y = 15
2x - y = 5
20. Solve by using quadratic formula : x2-3x+1=0.
21. Find the discriminant of the quadratic equation 2x2-6x+3=0 and hence write the
nature of roots.
OR
Prove that the quadratic equation r+ar-4=0 has distinct, real roots.
22. Find the distance between the co-ordinate of the points A(2, 3) and B(10,-3).
23. Draw a line segment of AB=8cm and divide it in the ratio 3:2 by geomtrical
construction.​

Answer 1

Step-by-step explanation:

1

a=2 b=14-10=4

tn =a1+(n-1)d

a25=2+(25-1)4

=2+96

98

Answer 2

18.↗️

19.

20.

21.

22.

hope this answers helps u