20 because if you subtract 32 from 12 you get 20 and now you would want to work on 2/4 minus 1/2 since they are the same 2/4 =1/2 simplified you get 0 which leaves your answer to just 20
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Answer:
The correct answer is C
Step-by-step explanation:
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Answer:
Step-by-step explanation:
Hello i edon know thhet answer
Answer:
(a) After t years, the height is
18t² + 3t + 10
(b) The shrubs are847 cm tall when they are sold.
Step-by-step explanation:
Given growth rate
dh/dt = 1.8t + 3
dh = (18t + 3)dt
Integrating this, we have
h = 18t² + 3t + C
When t = 0, h = 10cm
Then
10 = C
So
(a) h = 18t² + 3t + 10
(b) Because they are sold after every 9 years, then at t = 9
h = 18(9)² + 3(9) + 10
= 810 + 27 + 10
= 847 cm
