What is the sum of the polynomials? (7x² - 4x²) + (2x² - 4x²
2 answers:
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Answer:
53.2 mph
Step-by-step explanation:
Mara's family travels 239.4 miles between the hours of 9:10 a.m. to 1:40 p.m.
1:40 p.m. is 13:40.
Thus, they traveled for
13 hours 40 minutes - 9 hours 10 minutes = 4 hours 30 minutes
that is hours.
Use formula:
where
D = distance
r = rate
t = time.
In your case,
D = 239.4 miles
t = 4.5 hours
Hence,
Answer:
Time to land on 11ft is 4.25 seconds
Step-by-step explanation:
Given
Required
Solve for t when height is 11ft
This implies that
So: substitute 11 for y in
Collect Like Terms
Express both sides as squares
Take square roots of both sides (ignore negative)
Solve for t
Hence, time to land on 11ft is 4.25 seconds