Ms. Blevins wants to survey a random sample of students at her middle school about the amount of homework assigned each night. W
1 answer:
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Answer:
<em>n = 6 </em>
Step-by-step explanation:
2.3 × = (1 × 10³)(2.3 ×
)
(1 × 10³)(2.3 × ) = (1)(2.3) × (10³)(
) = 2.3 ×
2.3 × = 2.3 ×
⇒ 3 + n = 9 ⇒ <em>n = 6</em>
I assume you are asking how much time has passed
now, we can set up a proportion with this:
let x = time(in hours)
we cross multiply to get:
divide both sides by 50 to get:
hours
now, we can set up a proportion with this:
let x = time(in hours)
we cross multiply to get:
divide both sides by 50 to get: