It will take 0.556 seconds for an echo to reach one's ears
<h3>Calculating the time to hear an echo</h3>
From the question, we are to determine how long it would take an echo to reach one's ears
From the formula,
NOTE: To hear an echo, the sound will travel to and fro, hence, it will cover twice the distance
From the given information,
Distance = 92.0 m
NOTE: Speed of sound in air at 0 °C ≅ 331 m/s
Putting the parameters into the formula, we get
Time = 0.556 secs
Hence, it will take 0.556 seconds for an echo to reach one's ears.
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The equation is -1/3x+2=y
the y intercept is (0,2)
x intercept is (6,0)
Answer:
Step-by-step explanation:
Don't be fooled by this. We can make this look like the equations you have been factoring up to now. Let
x^3 = y Square both sides of the equation
(x^3)^2 = y^2
x^6 = y^2
Now substitute these results into the given equation.
y^2 + 6y + 5 = 0
This factors
(y + 5)(y + 1) = 0
So either y + 5 = 0
or y + 1 = 0
y+5 = 0
x^3 + 5 =0
x = cuberoot(-5)
x^3 + 1 = 0
x^3 = - 1
cube root (x^3) = cube root (-1)
x = - 1
Essentially the graph shows that there are only 2 roots (-1,0) (-1.71,0) just as our solution suggests.
Answer:
#4: ≤
Step-by-step explanation: