I think it’s the last one!
Using the relation between velocity, distance and time, it is found that the commute took 48 minutes.
<h3>What is the relation between velocity, distance and time?</h3>
Velocity is distance divided by time, that is:
For Lena, we have that d = 29, v = 36, hence the time in hours is given by:
In minutes, the time is given by:
tM = 0.8056 x 60 = 48.
More can be learned about the relation between velocity, distance and time at brainly.com/question/24316569
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Answer:
The Domain is that X is between -6 and 6
The range is that y is between -8 and 4
Step-by-step explanation:
Look at the two endpoints of the function. You can see that the left-most point is at (-6, 4) and the right-most point is at (6, -8)
3x-6≤9
3x≤15
x≤5
so the answer is x≤5
Answer:
54.2 mph
Step-by-step explanation:
Since the drivers leave at the same time and travel in directions 90° from each other, their separation speed can be found using the Pythagorean theorem. Let c represent Cynthia's average speed. Then (c-10) will represent Tim's average speed. Their combined separation speed is 70 miles per hour, so we can write ...
70² = c² +(c -10)²
4900 = 2c² -20c +100 . . . . eliminate parentheses
c² -10c -2400 = 0 . . . . . . . . divide by 2; put in standard form
(c -5)² -2425 = 0 . . . . . . . . . rearrange to vertex form
c = 5 ±5√97 . . . . . . . . . . . . solve for c, simplify radical
c ≈ 54.244 ≈ 54.2 . . . . . . . use the positive solution
Cynthia's average speed was 54.2 miles per hour.
