The first term of A. P is 5 and the last term is 45 and the sum of all term is 400. find the number of terms and the Common difference. help me plz ​

--- Number of terms

--- Common difference

Explanation:

Given

--- first term

Required

Determine the number of terms (n) and the common difference (d)

The sum of n terms of an AP is:

This gives:

Divide both sides by 25

The nth term of an AP is:

This gives:

Subtract 5 from both sides

Divide both sides by 15

the answer to the question is d. i took the test a second ago and got a 100 on it. hope this .

major league baseball

explanation:

jack roosevelt robinson broke the color barrier in major league baseball.as he was the first african american to play in the major leagues, jackie robinson became the target of racial abuse. jackie robinson is referring to the historic event, harlem riot.