Question

which tearm of - 25,-21,-17.......is 75​

Answer 1

Step-by-step explanation:

Answer:26

EXPLANATION;

a=-25

d=-21-(-25)

d=-21+25

d=+4

✔ Applying the formula;

⚫an=a+(n-1)d

⚫75=-25+(n-1)4

⚫75+25=(n-1)4

⚫100/4=(n-1)

⚫25=n-1

⚫25+1=n

⚫n=26

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Answer 2

Answer:

heya mate there's your answer

Given series-25,-21,-17....................

is in AP

let first term of the AP be a1=-25

second term of the AP be a2=-21

common difference of the AP be d

d=a2-a1

=-21-(-25)

=-21+25

=4

so common difference of the AP d =4

we know that,

nth term of an AP is,

an=a1+(n-1)d

75=-25+(n-1)(4)

75+25=4n-4

100=4n-4

4n=100+4

4n=104

n=104/4

n=26

so 75 is 26th term of the AP.

hope it helps you

Thank you