Answer:
100
Step-by-step explanation:
here we are solving for x
first plug in 100 for the ys in the equation
0.10x + 0.10(100) = 0.18(x + 100)
simplify
0.10x + 10 = 0.18x + 18
get x by itself
-8 = 0.08x
-100 = x
so the reasonable answer here would be 100
hope this helps <3
Geologic Time Scale. Rock ages, both absolute and relative, are useful because the rocks represent events in Earth's history such as the age of fossils or major geologic events like meteors and volcanic eruptions. ... The geologic time scale of Earth combines both absolute and relative time
Step-by-step explanation:
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Answer:
22 minutes after 7:00 P.M. they will be closest.
Step-by-step explanation:
A boat heading south travelling for t hours at the rate of 20 km/h, so the distance x = 20t
The another boat will reach the dock after travelling another 1-t hours at the rate of 15 km/h, so the distance =
y = 15 - 15t
D = d² = x² + y²
D = (20t)² + (15 - 15t)²
dD/dt = -2(15² )( 1-t ) +2 × 20² × t
dD/dt = 2 (15² + 20²) × t -2 ( 15 )² = 0
t =
t = 0.36 hours = 0.36 × 60 = 21.6 minutes ≈ 22 minutes
Therefore, the distance is minimized 22 minutes after 7 pm.