If you can find your way through all the smoke of the definition,
you find that an increase of 10 times the intensity is an increase
of 10 dB.
Next, if you can find your way over, under, around, and through
all the speeds and distances of the vehicles, you'll find that you
don't need them. Right in the middle of the pile, it says "intensity
10 times that of ...". That right there tells you that the sound of
the truck is 10 dB louder than the sound of the car.
So the car is 70 dB (asked for, and then given), and the truck is 80 dB.
Answer:
y - y1 = m(x - x1)
y - -3 = 3(x - 1)
y + 3 = 3x - 3
y = 3x - 3 - 3
y = 3x - 6
y = 3x - 6
Step-by-step explanation:
Thie equation is in slope-intercept form (y = mx + b)
The y-intercept is -6 .... ((0, -6) is one point on the line.
It is given that (1, -3) is also on the line. So to graph, plot those
2 points and connect them with a line.
Answer: 
hrs
<u>Step-by-step explanation:</u>
1st painter: 
2nd painter: 
1st + 2nd = Together
+ = 
+ 
= 
4x + x = 8
5x = 8
x = 
=
Answer:
-6/5
Step-by-step explanation:
3/2x - 5/4y = 15
-5/4y = -3/2x + 15
multiply each side by (-4/5)
(-4/5)(-5/4y) = (-4/5)(-3/2x + 15)
y = -6/5x - 12
rate of change: -6/5
Answer:
500
Step-by-step explanation:
If 1% is 2.5 then 100% is 250. Since 250 is half of a number, you went then multiply by 2 to double that number which is 500.
