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Karolina [17]
3 years ago
9

Select the correct answers from the drop down menu. The formula ? =10log(I/Ia) is used to find the sound level, ?, in decibels (

dB), of a sound with an intensity of I, In the formula, I0 represents the smallest sound intensity that can be heard by the human ear (approximately 10-12 watts/meter^2). The sound level on a busy street is 70 dB. What is the sound intensity on the street?
The sound intensity on the busy street is __ watts/meter^2.
a. 10^-5
b.10^-10
c.10^-1

Mathematics
2 answers:
galben [10]3 years ago
8 0

Answer: 10^-5

Step-by-step explanation: Correct on plato

user100 [1]3 years ago
8 0

Answer:

10^-5

Step-by-step explanation:

it is correct on plato

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What is the area of this figure? Round to the tenth if necessary.
Julli [10]

Answer:

<h3>b) 850.1 centimeters.</h3>

Step-by-step explanation:

To find the area of this figure, we must first find the areas of the shapes that compose this figure.

This figure is made up of a rectangle and a semicircle.

Remember: To find the area of a semicircle, multiply the radius by itself twice, then multiply the product pi, lastly divide the product by 2.

a=\pi r^2/2

<u>3.14 will be used for pi!</u>

To find the area of a rectangle, multiply the length by the width. The product is the area of the rectangle.

a=lw

Now, let's solve.

The diameter of the semicircle is 32 centimeters.

To find the radius of a semicircle, divide the diameter by 2.

32/2=16

The radius of the semicircle is 16 centimeters.

Now that we have the radius, we can find the area of the semicircle.

\pi 16^2/2=401.92

The area of the semicircle is 401.92 centimeters.

Furthermore, we find the area of the rectangle.

14*32=448.

The area of the circle is 448 centimeters.

Next, we add the areas of both shapes to find the area of this figure.

401.92+448

=849.92

The final step is to round 849.92 to the nearest tenth.

Even though 849.92 to rounded to the nearest tenth is 849.9, there is no answer choice for this. The closest one to this answer is choice 'b.'

I, therefore, believe the area of this figure is 850.1 centimeters.

3 0
3 years ago
If kelley has 273626256 steps and denna has 227963762 how much steps do they get in all
kkurt [141]

Answer:

501590018 steps

Step-by-step explanation:

To find this high numbered problem all you have to do is add the steps in total. You would add 273626256 and 227963762 to get 501590018

5 0
3 years ago
Read 2 more answers
What is the fraction of 10-6
gladu [14]

Answer:

1 4/6

Step-by-step explanation:

8 0
3 years ago
If the sales tax is 7% on all purchases, how much should you set aside for $300. Show your work.
trasher [3.6K]

Answer:

$21

Step-by-step explanation:

7% = .07

$300 multiplied by .07 = $21

3 0
3 years ago
A fruit company delivers its fruit in two types of boxes: large and small. A delivery of 3 large boxes and 8 small boxes has a t
Verdich [7]

Answer:

The Large Box Weighs 18 kg, and the small box weighs 6.5 kg

Step-by-step explanation:

Let a= the weight in kg of a large box

Let b= the weight in kg of a small box

Multiply both sides of (1)  by 4 and subtract (2) from (1)

1. 20a+8b=412

2. -3a-8b= -106

17a=306

a=18

and

5*8+2b=103

90+2b=103

2b=13

b=6.5

7 0
3 years ago
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