01-08-2020
Mathematics

contestada

Find the 20th term from the last term of the AP:3,8,13,..., 253.

Respuesta :

MathPhys MathPhys

01-08-2020

Answer:

158

Step-by-step explanation:

The sequence is 3, 8, 13, ..., 253.

Going backwards, it's 253, 248, 243, ..., 3.

First term is 253, common difference is -5.

The nth term is:

a = 253 − 5(n − 1)

The 20th term is:

a = 253 − 5(20 − 1)

a = 158

Answer Link

Otras preguntas

If 1≤x (A) 1 (B) 9/10 (C) 10/11 (D) 17/72 (E)13/56

A rectangle has length x cm and width 2 cm lessthan its length. It has an area of 146 cm².Show that x² – 2x = 146

About how many inches are equivalent to 3 meters ? Round to the numbers needed in the table to the nearest tenth to find the approximate answer.

how do I learn spanish

i neeed helpppppppppsolve with the quadratic fotmula [tex]2 {p}^{2} + 3p + 6 = 0[/tex]

1. What do you think is the theme of the play? How has it been worked out ?

Given triangle PRS is congruent to triangle CFH, find the values of x , y and z ?

-18=15-3(6t+5) solve for answer

How do you do these two?

The perimeter of a triangular garden is 900cm and its sides are in the ratio 3 : 5 : 4. Using Heron’s formula, find the area of the triangular garden?