Mathematics: WILL MARK BRAINLIST What is the 21st term of the sequence with a1 = -7 and d = 3? A . -4 B . -11 C . -21 D . 53

WILL MARK BRAINLIST What is the 21st term of the

Ответ:

rchapman414

16.03.2022

Mathematics

$T_{21} = 53$

Step-by-step explanation:

Given

a = -7

d = 3

Required

Determine $T_{21}$

This is calculated using sum of Ap formula

T_n = a + (n - 1)d

In this case:

n =21

So, the equation becomes

$T_{21} = -7 + (21 - 1) * 3$

$T_{21} = -7 + 20 * 3$

$T_{21} = -7 + 60$

$T_{21} = 53$

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Ответ:

JazminFarris1038

23.08.2020

Mathematics

400 tiles

Step-by-step explanation:

$\sqrt{10201} = 101$

So that means that the side length of the square is 101 tiles (get it? 101 Dalmatians?) 101 * 4 = 404, which is the perimeter of the room. 404 - 4 (because we cant count the corners twice)

So our answer is 400 Tiles

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WILL MARK BRAINLIST What is the 21st term of the sequence with a1 = -7 and d = 3?
A . -4
B . -11
C . -21
D . 53

Ответ:

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