decoito616290 decoito616290

21-05-2021
Mathematics

contestada

What value of n makes this equation true?

0.7n + 0.8n = 2.1

A. n = 0.60

B. n = 1.40

C. n = 3.15

D. n = 3.60

Respuesta :

Аноним Аноним

21-05-2021

0.7n+0.8n=2.1

1.5n=2.1

n=1.4

Therefore, the answer is B.

Answer Link

Wedddwddd Wedddwddd

21-05-2021

Answer:

B). n = 1.40

Step-by-step explanation:

0.7n + 0.8n = 2.1

(0.7n + 0.8n) = 2.1

1.5n = 2.1

/1.5 /1.5

n = 1.40

hope this helped!

Answer Link

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