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3 years ago

2x +(3y+8z)=(2x+3y) is an example of which property?

Mathematics

2 answers:

slava [35]3 years ago

8 0

Real numbers is the property

irga5000 [103]3 years ago

7 0

I think it's Real numbers

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-10+|6+-17| - - 14 show how you got the answer

mel-nik [20]

Answer:

Step-by-step explanation:

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1 year ago

Using your knowledge of exponential and logarithmic functions and properties, what is the intensity of a fire alarm that has a s

Ierofanga [76]

Option B:

$I=1.0\times\ 10^{0} \ \text {watts}/ \text m^2}$

Solution:

Given sound level = 120 decibel

To find the intensity of a fire alarm:

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

where $I_0=1\times10^{-12}\ \text {watts}/ \text m^2}$

Step 1: First divide the decibel level by 10.

120 ÷ 10 = 12

Step 2: Use that value in the exponent of the ratio with base 10.

$10^{12}$

Step 3: Use that power of twelve to find the intensity in Watts per square meter.

$$10^{12}=\left(\frac{I}{I_0} \right)$

$$10^{12}=\left(\frac{I}{1\times10^{-12}\ \text {watts}/ \text m^2} \right)$

Now, do the cross multiplication,

$I=10^{12}\times1\times\ 10^{-12} \ \text {watts}/ \text m^2}$

$I=1\times\ 10^{12-12} \ \text {watts}/ \text m^2}$

$I=1\times\ 10^{0} \ \text {watts}/ \text m^2}$

$I=1.0\times\ 10^{0} \ \text {watts}/ \text m^2}$

Option B is the correct answer.

Hence $I=1.0\times\ 10^{0} \ \text {watts}/ \text m^2}$ .

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3 years ago

- 6 = z + 3 solve each equation for the unknown variable

Nataly [62]

Solution: Z= -9

Reasoning: -6 - 3 = -9

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3 years ago

−8/9 ⋅ 5/6 What is the product in simplest form? Fractions btw

klio [65]

The answer 56 it’s already put in simplest form

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3 years ago

How many pints are in 15 gallons

lesya692 [45]

There 60 pints in 15 gallon

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3 years ago

Read 2 more answers