Anyone know this ??

Mathematics

1 answer:

Nady [450]3 years ago

6 0

Answer: The first one does not belong, neither does the third.

Step-by-step explanation:

The second one belongs as 30+5=35. You can divide 35 by 5 to get A=7. This is a valid answer. The third is the same as the first. The fourth acts for 30+25=5. 55/5=11.A=11. This is also a valid answer. So, the first one does not belong and neither does the third.

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Answer:

Step-by-step explanation:

Magnitude $M$ of an earthquake is defined as $M=log\text{ }\frac{I}{S}$ . Here $I$ is the Intensity of the earthquake and $S$ is the intensity of standard earthquake.

We have an earthquake that is 10 times more intense than a standard earthquake. Let us denote the intensity of the earthquake as $I$ .

10 times more intense than standard earthquake ⇒ $I=10S$

Magnitude of the earthquake = $M\text{ = }log\text{ }\dfrac{I}{S}\text{ = }log\text{ }\dfrac{10S}{S}\text{ = }log\text{ }10\text{ = }log_{10}\text{ }10\text{ = }1$