1 year ago

You invest $1000

Mathematics

1 answer:

Shkiper50 [21]1 year ago

6 0

i dont speak English 3456

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On April 11, 2012, two earthquakes were measured off the northwest coast of Sumatra. The first had a magnitude of 8.6. The secon

Hoochie [10]

Answer:

Option D. 2.51 is correct.

Step-by-step explanation:

Magnitude of first earthquake = 8.6

Let intensity of first earthquake be x

$Magnitude = \log(\frac{x}{S}),\text{ where S is seismographic factor}\\\\\implies 8.6=\log(\frac{x}{S}).......(1)$

Magnitude of second earthquake = 8.2

Let intensity of second earthquake be y

$Magnitude = \log(\frac{y}{S}),\text{ where S is seismographic factor}\\\\\implies 8.2=\log(\frac{y}{S}).......(2)$

Now, to find the factor by which intensity of first earthquake is greater than intensity of second : we divide equation (1) by equation (2)

$\implies\log(\frac{x}{y})=8.6 - 8.2\\\\\implies \log(\frac{x}{y})=0.4\\\\\implies\frac{x}{y}=10^{0.4}\\\\\implies\frac{x}{y}=2.51$

Hence the required factor is 2.51

Therefore, Option D. 2.51 is correct.

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3 years ago

Torrie could buy 8 jars of Jiffy peanut butter for $27.12 or 7 jars of Peter Pan peanut butter for $26.53. What is the differenc

VLD [36.1K]

Answer:

(D)

Step-by-step explanation:

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3 years ago

students in sixth grade class were asked which team was their favorite. the results are shown in the table. find the ratio of st

Serjik [45]

I don't know because I'm not in six grade

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3 years ago

The measure of arc BCD is

makkiz [27]

Answer:

m∠BCD = 140°

Step-by-step explanation:

ABCD is cyclic quadrilateral. A property of cyclic quadrilateral states that the opposite angles of it sum up to 180°. Here:

m∠A + m∠C =180° and m∠B + m∠D = 180°

So, m∠A + m∠C =180°

m∠A = 40° (given in the question)

40° + m∠C = 180°

m∠C = 180° - 40° = 140°

∴m∠C = m∠BCD = 140°

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2 years ago

Kinda confused on what the sum would be?!? HELP NOWW PLEASE

valentinak56 [21]

That is b. aka 2
thanks

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3 years ago