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Rufina [12.5K]
3 years ago
13

Hey what is 30 % of 3.5 million?

Mathematics
2 answers:
USPshnik [31]3 years ago
6 0

Answer:

  1.05 million

Step-by-step explanation:

"of" means "times" in this context, so you multiply the two numbers together:

  30% × 3.5 million = 0.30 × 3.5 million = 1.05 million

arsen [322]3 years ago
4 0

Answer:

1,050,000

Step-by-step explanation:

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Alex Ar [27]

The intensity of sound which the decibel level of the sound measures 156 is 3.981 × 10³ W/m²

Decibel level, dB = 10log₁₀(I/I₀) where dB = decibel level = 156, I = intensity at 156 dB and I₀ = 10⁻¹² W/m².

Since we require I, making I subject of the formula, we have

dB/10 = log₁₀(I/I₀)

\frac{I}{I_{0} } = 10^{\frac{dB}{10} } \\I = I_{0} 10^{\frac{dB}{10} }

Substituting the values of the variables into the equation, we have

I = I_{0} 10^{\frac{dB}{10} }\\I = 10^{-12} 10^{\frac{156}{10} }\\I = 10^{-12} 10^{15.6}\\I = 10^{15.6-12} \\I = 10^{3.6} W/m^{2}

I = 3981.072W/m²

I = 3.981 × 10³ W/m²

So, the intensity of sound which the decibel level of the sound measures 156 is 3.981 × 10³ W/m²

Learn more about intensity of sound here:

brainly.com/question/4431819

3 0
3 years ago
What is a real life word problem for the equation y=2x
lara [203]

Answer:

You want to buy some golden apples. Each golden apple cost $2. How much much does golden apples pass cost?

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7 0
2 years ago
Choose the correct simplification of the expression (a^4/b^2)^3
Oksanka [162]
The answer is B: <span> a^12/b^6

Proof:

Simplify the following:
(a^4/b^2)^3

Multiply each exponent in a^4/b^2 by 3:
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3×4 = 12:
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Multiply exponents. (b^2)^3 = b^(2×3):
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f(2)=3*2+1=7 (2,7)
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3 years ago
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