Respuesta :
Answer:
Rhea's estimation is unreasonable.
Step-by-step explanation:
Identify what you know:
1) Rhea calculates that she can write 1.25 pages every 2 hours
2) Rhea is calculating how long it would take her to write 6 pages.
Using Rhea's initial calculation, we can figure out roughly, how long it would take her to finish 6 pages.
First we need to divide 6 by 1.25, to figure out how many "2 hour" periods it would take Rhea.
6/1.25 = 4.8
4.8 x 2 = 9.6
It would take Rhea roughly 9.6 hours to finish 6 pages, which is 3.6 hours more than her original estimation. Thus, her estimate is unreasonable.
Option (3) No, she incorrectly rounded 1.25 to 2 is correct if Rhea is writing a paper, and she notices that she can write 1.25 pages every 2 hours.
What is rounding off number?
Rounding is a technique to reduce a large number to a smaller, more approachable figure which is very similar to the actual. Rounding numbers can be achieved in a variety of ways.
The missing options are:
- No, she incorrectly rounded 6 to 6.5.
- Yes, she correctly rounded 1.25 to 2.
- No, she incorrectly rounded 1.25 to 2.
We have:
Rhea is writing a paper, and she notices that she can write 1.25 pages every 2 hours.
1.25 pages → 2 hours
Let's suppose, she writes x-page paper in 1 hour
x page → 1 hour
1.25/x = 2/1
x = 1.25/2
x = 0.625 pages
In 6 hours she will complete:
= 0.625×6
= 3,75 pages
She incorrectly rounded 1.25 to 2
Thus, option (3) No, she incorrectly rounded 1.25 to 2 is correct if Rhea is writing a paper, and she notices that she can write 1.25 pages every 2 hours.
Learn more about the rounding off number here:
https://brainly.com/question/13391706
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