Question

Find the sum of these.
4,5 1 / 4,6 1/2 ................ Up to 37 words​

Answer 1

Answer:

4 + 21/4 + 13/2 + ........

here a = 4

d = 21/4 - 4 = 5/4

n = 37

Step-by-step explanation:

$sum \: = \frac{n}{2} (2a \: + (n - 1)d) \\ = \frac{37}{2} (2 \times 4 + 36 \times \frac{5}{4} ) \\ = \frac{37}{2} (8 + 45) \\ = \frac{37}{2} \times 53 \\ = \frac{1961}{2}$

Answer 2

Answer:

this is correct.............................