Math, asked by ummekulsumsadaf66, 7 months ago

what is the common difference of an A.p in which T21 - T7 =84

Answers

Answered by mbakshi37

1

Answer:

t21-t17 = 4d= 84

so d= 21

Answered by Anonymous

5

Answer:

the common difference is -84/14

T21-T7=84

a+20d-a-6d=84

14d=84

d=84/14

Previous Question

Next Question

Similar questions

Math, 3 months ago

find the product by suitable rearrangement 20 x 355 x 50 just answer needed...

English, 3 months ago

UNDERLINE THE CORRECT VERB IN EACH SENTENCE. THEN, WRITE THE SENTENCE CHANGING THE VERB FROM SINGULAR TO PLURAL OR VISE VERSA 5.Suparmarket,online stores and retailer do/does not sell this product 6.There has/have always been a reason for doing it this way...

Math, 3 months ago

Change 315gm to kilogramme...

Math, 7 months ago

Four rational numbers-7 between -9...

Math, 7 months ago

Put the following equation of a line into slope-intercept form, simplifying all fractions. 2y-x=-6...

Math, 1 year ago

find a number which is greater than 4236 by 2793...

Biology, 1 year ago

liver does not secrete any enzimes yet it help in digestion...

Math, 1 year ago

Please do.. ...........