theresa88 theresa88

06-10-2020
Mathematics

contestada

What value of n makes the equation true?

0.7n + 0.8n = 2.1

A. n = 3.15
B. n = 0.60
C. n = 1.40
D.n = 3.60

Respuesta :

deborahvarghese1 deborahvarghese1

06-10-2020

Answer:

C. n=1.40

Step-by-step explanation:

just substitute it in or solve for the equations to get the unknown variable

Answer Link

chouniza chouniza

06-10-2020

0.7n + 0.8n = 2.1
1.5n = 2.1
=>n= 2.1/1.5= 1.4
So, the ans is C. 1.40

Answer Link

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