Answer:
Step-by-step explanation:
- The speed of the boat in the lake = x
- The speed of the current = 3 km/h
<u>Required equation:</u>
- 54 / (x + 3) + 42 / (x - 3) = 96/x
- 9x(x - 3) + 7x(x + 3) = 16(x + 3)(x - 3)
- 9x² - 27x + 7x² + 21x = 16x² - 144
- 6x = 144
- x = 144/6
- x = 24 km/h
Answer:
<h2>
(1, 41)</h2>
Step-by-step explanation:
h = 1
k = p(h) = 4·1² + 24·1 + 13 = 4 + 24 + 13 = 41
Answer:
D, or the last one.
Step-by-step explanation:
Brainliest?
Answer:
90 = 150 of 60
88 = 220 of 40
75 = 300 of 25
100 = 125 of 80
Step-by-step explanation:
