First total number of meters = 11 meters.
First number of seconds = 4 seconds.
Second total number of meters = 13 meters.
Second number of seconds = 12 seconds.
Speed in unit rate =
Plugging values in the formula.
Speed in unit rate =
=
On dividing 2 by 8 , we get 0.25.
Therefore, speed is 0.25 meter per second.
Answer:
<h3>AB ≈ 70m</h3>Step-by-step explanation:
Check the attachment for the diagram.
You can see from the diagram that it is a right angled triangle with opposite side AB and adjacent side BC. Using SOH, CAH, TOA trig identity to get the length of AB. According to TOA;
tan 35° = opposite/adjacent
tan 35° = AB/BC
tan 35° = AB/100
AB = 100tan35°
AB = 100 * 0.7002
AB = 70.02m
Hence the distance across a lake between A and B is approximately 70m
