We’re calculating perimeter, so we add up the length of all 4 sides, or multiply (l + w) x 2. Since the room is square, we only need the one measurement.
11.4 x 4 = 45.6 feet
Usando proporciones, se encuentra que al final de la primera hora, el congelador tenía una temperatura de -1ºC.
- Este problema se resuelve por proporciones.
- En 3 horas, la temperatura bajó 12ºC, puesto que
.
La temperatura del congelador bajó en la <u>misma cantidad de grados cada hora</u>, o sea, en la primera hora, la cantidad que bajo es:

4ºC bajo a 3ºC es:

O sea, al final de la primera hora, el congelador tenía una temperatura de -1ºC.
Un problema similar es dado en brainly.com/question/24617308
1. y=6
2. y=-12
Step-by-step explanation:
<u>1) If y varies inversely as x, and y=3 as x = -2, find y for the x value of -1.</u>
It is given that
y varies inversely as x
IT will be written as:
y∝1/x
Removing the proportionality symbol
y=k/x
Given
y=3 , x=-2
Putting the values
3=k/-2
k=3*-2 = -6
The equation will be:
y=-6/x
So,
When x=-1

<u>2) If y varies directly as x, and y=15 as x=-3, find y for the x value of 4</u>
y is directly proportional to x
y∝x
y=kx
Given
y=15, x=-3
Putting the values

Hence,
1. y=6
2. y=-12
Keywords: Proportion, Variation
Learn more about proportion at:
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The answers are overall different. But there are similarities. Both equations have an addition sign. Both also have double digit numbers being added together.