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Umnica [9.8K]
2 years ago
14

Earthquakes are measured by the Richter scale and demonstrated by the formula R = log(A) where A measures the amplitude of the e

arthquake wave and A, is the amplitude of the smallest detectable wave (or standard wave). An earthquake is measured with a wave amplitude 1800 times as great as a standard wave. What is the magnitude of this earthquake using the Richter scale? Round to the nearest tenth.​
Mathematics
1 answer:
Airida [17]2 years ago
3 0

Answer:

3.22

Step-by-step explanation:

log(18×100)

log18+log100

1.22+2

3.22

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Answer: 72

Step-by-step explanation:

From the question, we are informed that a disc jockey can play 7 records and that there are 9 records to select from for a particular segment of a radio show.

The number of ways that the program for the segment be arranged will be:

= 9! / 7!

= (9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1) / (7 × 6 × 5 × 4 × 3 × 2 × 1)

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3 years ago
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german
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What are the x- and y-intercepts for the graph of −5x − 4y = −20? Plz explain your answer.
yarga [219]

Answer:

-20

Step-by-step explanation:

5

x

−

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Tap for more steps...

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(

−

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,

0

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y-intercept(s):

(

0

,

5

)

List the intersections.

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(

−

4

,

0

)

y-intercept(s):

(

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5

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