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Solnce55 [7]
3 years ago
9

noise in a quiet room is 500 times for as intense as the threshold of sound. what is the decibel measurement for the quiet room?

Mathematics
1 answer:
mestny [16]3 years ago
5 0
For this case, the first thing you should do is observe the graph.
 We have that the x-axis represents the intensity of the sound.
 The y-axis represents the measure in decibels.
 We have then:
 For x = 500 the value of y is y = 28
 Answer:
 
The decibel measurement for the quiet room is:
 
28 decibels
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Solve the equation. Round the answer to the nearest tenth.<br> 5*6^3n=20
solniwko [45]

Step-by-step explanation:

5×6'3n=20

30'3n=20

3n=20-30

3n/3= -10/3

n= -3

7 0
3 years ago
If x equals -3. find the matching value for y. 2x-3y=6
tiny-mole [99]

-4

Step-by-step explanation:

2(-3)-3y=6

-6-3y=6

-3y=12

y=-4

if I helped you, please vote brainliest

7 0
3 years ago
Here is a rectangle which has a width of x cm. x cm
miskamm [114]

Answer:

278.25 cm2

Step-by-step explanation:

If the width of the rectangle is x (cm), as the length is 8cm longer, so that the length of the rectangle is: x + 8 (cm).

In the attached image, we can see the length of each side. Total length of the sides are 90 cm.

=> (x + x + 8) + x + 8 + (x+8) + (x + x + 8) + x + 8 + (x +8) = 90

=> 8x + 48 = 90

=> 8x = 90 - 48 = 42

=> x =42/8 = 5.25 (cm)

=> The width of the rectangle is 5.25cm

=> The length of the rectangle is: 5.25 + 8 = 13.25 cm

=> The area of one rectangle is: Length x Width = 5.25 x 13.25 = 69.5625 cm2

As the 8-sided shape is made from 4 rectangles, so that:

Area of 8 sided shape = 4 x Area of the rectangle = 4 x 69.5625 = 278.25 cm2

6 0
3 years ago
If i know the area of a square, how do i find the side length?
Talja [164]

Answer:

Um im no expert but

Step-by-step explanation:

length is a type of measurement, that tells how long something is or how wide it is. hoped this helped^^

6 0
3 years ago
I need help bbbbbbbb​
Sav [38]
Answer: 180cm


Explanation:

The area of a triangle is 1/2(b)(h).
The height of the triangles is 12cm and the base is 6cm.

1/2(6)(12) = 36cm
Multiply by 4 = 144


For square: 6 • 6 = 36cm


144cm + 36cm = 180cm
8 0
3 years ago
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