The ratio of their perimeters is still 7:20. The poster is a rectangle shape. If the length of each side of a poster is proportional to the other by a certain ratio, the sum of the lengths of all sides is also proportional by the same ratio. You can suppose the lengths of four sides of poster A are 7a, 7b, 7c, 7d, so poster B has 20a, 20b, 20c, 20d. (7a+7b+7c+7d)/(20a+20b+20c+20d)=7(a+b+c+d)/20(a+b+c+d)=7/20.

4 0

3 years ago

A tram moved downward 54 meters in 6 seconds at a constant rate. What was the change in the tram's elevation each second?

Black_prince [1.1K]

Answer:

9 m/s

Step-by-step explanation:

To calculate the change in the tram's elevation each second, you must divide the given figures which is now the given formula of $\frac{meters}{seconds}$ ;

$54$ ÷ $6 =$

$\frac{54}{6} = 9$

Therefore, the change in the tram's elevation is 9 each second.

5 0

3 years ago

Find the measure of an interior angle of a regular dodecagon(12-sided polygon). Hint: Sum = (n-2)180​

Find the measure of an interior angle of a regular dodecagon(12-sided polygon). Hint: Sum = (n-2)180