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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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the taco truck sells tacos for $3 and burritos for $4. the number of items sold on a tuesday is 125 with a total income of $430.
butalik [34]

Answer:

Step-by-step explanation:

Hi, to answer this question we have to write a system of equations:

3 T + 4 B =425

T + B = 125

Where T is the number of tacos sold, and B is the number of burritos sold.

Multiplying the second equation by 3, and subtracting it to the first equation:

3 T + 4 B =425

3T + 3B = 375

___________

B =50

Replacing B in any equation:

T + B = 125

T +50 =125

T =125-50

T = 75

Feel free to ask for more if needed or if you did not understand something.

5 0
2 years ago
Find the standard form of the equation of the parabola with a focus at (0, 8) and a directrix at y = -8.
Gala2k [10]
Vertex is directly in middle of directix and focus

distance from 8 to -8 is 16
16/2=8
so 8 below focus (since 8>-8) is the point (0,0
vertex is (0,0)
nice

it opens up because focus is above directix
also it goes up down so
4p(y-k)=(x-h)^2
(h,k) is veretx
we got that (h,k) is (0,0)
and p is distance from vertex to focus which is 8
so
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5 0
3 years ago
1. What is the solution to the system of equations?
inysia [295]
<span> Use the substitution method to justify that the given system of equations has no solution.</span>
4 0
3 years ago
Read 2 more answers
Help please less than 19 minutes to turn in
vagabundo [1.1K]
Angle K = angle M

(4x-1)=(2x+27)

4x-2x=27+1

2x=28

x=14

K=4x-1 then 4(14)-1
55 degrees
M=2x+27 then 2(14) +27
55 degrees
K+M+L =180
55+55+L=180
110+L=180
L=70 degrees
Therefore K=55 degrees M=55 degrees L=70 degrees
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3 years ago
Mandy made a graph to show the relationship between the number of Fun-Fair prizes purchased and the total cost of the prizes.Whi
raketka [301]

Answer:

\boxed{C}

5 0
2 years ago
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