R(t) = 3t ; where t represents the time in minutes and r represents how far the paint is spreading.
A(r) = πr²
Part A:
A[r(t)] = π (3t)² = 3.14 * 9t² = 28.26t²
Part B:
r(10) = 3(10) = 30
A(r) = 3.14 * 30² = 3.14 * 900 = 2,826 square unit
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Answer:
i have the same question
Step-by-step explanation:i need help too
Step-by-step explanation:
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- Width of a rectangle ( w ) = 7t - 1.5 ft
- Length of a rectangle ( l ) = 1.5t + 8 ft
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- Perimeter of the rectangle
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3x+8.5 =2.5x + 14.5
subtract 2.5x from each side
.5x + 8.5 = 14.5
subtract 8.5 from each side
.5x =6
multiply by 2
x =12
at 12 weeks they will be the same height
Choice B
Answer:
x = 33
y = 38
z =109
Step-by-step explanation: