Answer:
-39 cm²/h
Step-by-step explanation:
The area of the rectangle is A = hw where h = height and w = width.
So the rate of change of area with respect to time is
dA/dt = d(hw)/dt
dA/dt = hdw/dt + wdh/dt
Given that at an instant h = 3cm, w = 8 cm and dh/dt = + 11 cm/h and dw/dt = -9 cm/h(negative since it is decreasing)
So, dA/dt = hdw/dt + wdh/dt
dA/dt = 3 cm × (+11 cm/h) + 8 cm × (-9 cm/h)
dA/dt = 33 cm²/h - 72 cm²/h
dA/dt = -39 cm²/h
Answer:
4.8 inches.
Step-by-step explanation:
From the above, the scale on the map is given:
25 miles = 2 inches
1 mile = 2/25 inches
60 miles will therefore be,
= (2/25) * 60
= 24/5
= 4.8 inches.
Answer:
Your answer is 7 children on each team
Step-by-step explanation:
The question clearly states "divided," so divide 56 by 8.
The question is asking you how many kids are on each team.
If I didn't understand the question properly, let me know. :) good luck!
