4 years ago

8x10^30/2x10^12 in scientific notation?

Mathematics

1 answer:

4vir4ik [10]4 years ago

5 0

Answer:

4*10^18

Step-by-step explanation:

Easier to think of it as the factors out front (8 / 2) = 4

and subtract the exponents 30 - 12 = 18

= 4*10 ^18

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Answer:

Step-by-step explanation:

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3 years ago

What is the sound level for a noise that has an intensity of 9.9 × 10-5 watts/m2?

lisabon 2012 [21]

we can use

sound level formula

$\beta=10log(\frac{I}{I_0} )dB$

where

$\beta$ is the sound level for a noise

I is intensity given

I0 is reference intensity

we know that reference intensity as

$I_0=1*10^{-12}W/m^2$

we are given

$I=9.9*10^{-5}W/m^2$

now, we can plug these values

and we get

$\beta=10log(\frac{9.9*10^{-5}W/m^2}{1*10^{-12}W/m^2} )dB$

now, we can simplify it

$\beta=10log(9.9*10^{-5+12} )dB$

$\beta=79.95635dB$ ................Answer

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4 years ago

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3 years ago

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3 years ago

Use the Pythagorean Theorem to find the distance, to the nearest tenth, between F(9,5) and G(-2, 2).

d1i1m1o1n [39]

Answer:

Step-by-step explanation:

d = √((9 -(-2))² + (5 - 2)²)

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3 years ago

Read 2 more answers