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3 years ago

Helpppppppppp.......

Mathematics

2 answers:

ruslelena [56]3 years ago

5 0

Answer:

36 centimeters in the poster

Step-by-step explanation:

Let us plan out our steps, and solve for each:

1. Given the information, let us create a proportionality as such:

3 = 1 ⇒ x - centimeters in the poster

x 12

2. Now let us cross multiply, and solve through simple algebra for x:

3 * 12 = x,

x = 36 centimeters in the poster

Andrew [12]3 years ago

4 0

Answer:

36cm

Step-by-step explanation:

The scale is 3 to 1, so the poster size is 3 times larger than the actual thing.

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2 years ago

A 10-pound block of ice melts at a rate of 3% per hour. Find the weight of the block of ice after 1 day.

mylen [45]

Answer:

The weight of the block of ice after 1 day is of 4.81 pounds.

Step-by-step explanation:

Equation for exponential decay:

The equation that models an amount after t hours, subject to exponential decay, is given by:

$A(t) = A(0)(1 - r)^t$

In which A(0) is the initial amount and r is the decay rate, as a decimal.

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This means that $A(0) = 10, r = 0.03$

$A(t) = A(0)(1 - r)^t$

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