Answer:
c
Step-by-step explanation:
Answer:
Step-by-step explanation:
b
Answer:
Step-by-step explanation:
3 and 2/5
(aka A)
If we know that 30% of the time is used after 9 minutes we can write this mathematically as:

By solving for x we can determine the total time allowed to play games and so:

The total time allowed to play games is 30 minutes. Since 9 minutes have lapsed 30-9=21 minutes left to play.
Answer
Find out the what is the percent error in the measurement, to the nearest tenth of a percent .
To prove
Formula

Where error = | Approx - Exact |
As given
Karen measures the width of a garden plot and records that it is 44.25 meters. Its actual width is 45.5 meters.
Approx value = 44.25 meters
Actual value = 45.5 meters
error = | 44.25 - 45.5 |
= |-1.25|
= 1.25
Put in the formula


Percentage error = 2.7%
Therefore the percentage error is 2.7% .