The Ring of Fire borders mayor plates tectonics that cause earthquakes and tsunami. Depending on the movements of the plates the volcano or volcanoes may become active and erupt. Bordering Japan there are 60 active volcanoes that could erupt at major movements from the tectonic plates.

Explanation:

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7 0

3 years ago

the average of two number is 55 to subtract from the greater number ratio between number become 1:2 the smaller number is

Thepotemich [5.8K]

Complete question:

The average of two number is 55. If 2 is subtracted from the greater number, the ratio between the numbers become 1:2 . The smaller number is

Answer:

The smaller number is 36

Explanation:

let the smaller number = x

let the greater number = y

$\frac{x + y}{2} = 55\\\\$

x + y = 110

y = 110 - x --------- equation (i)

$\frac{x}{y-2} = \frac{1}{2}\\\\ y-2 = 2x\\\\y = 2x + 2 ------equation(ii)$

Substitute y in equation (ii)

110 - x = 2x + 2

110 - 2 = 2x + x

108 = 3x

x = 108 / 3

x = 36

Therefore, the smaller number is 36

6 0

3 years ago