Question

Q.4. For what value of p, are 6p + 1, 13, 5p - 8 three consecutive terms of an A.P.?
Q.5. AABC is similar to ADEF. If AB = 4 cm, BC = 3.5 cm, CA = 2.5 cm and DF = 7.5, find
the perimeter of ADEF.​

Answer 1

Answer:

Step-by-step explanation:

If a b c are in AP,

b-a = c-b

$\therefore 13-(6p+1) = 5p-8 - 13\\=> 13-6p-6=5p-21\\=> 7-6p = 5p-21\\=> 28 = 11p\\=> p = \frac{28}{11}$