Which of the following is a solution to the equation − 2/5 x = 10? a. x = -4 b. x = -25 c. x = 4 d. x = 25 plz help im stuck
2 answers:
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Answer:
10⁴ seconds
Step-by-step explanation:
Given that,
A person breathes in about cubic meters of air per second.
We need to find time taken to breathe 2.5 cubic meters of air.
In 1 sec = m³ of air breathe
Let in x seconds, 2.5 m³ of air taken by the person.
Hence, in 10⁴ seconds 2.5 m³ of air is taken by the person.
The formula of an area of a circle:
r - a radius
We have r = 14m. Substitute:
If you want an approximate area, you can accept
Then: