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3 years ago

Which of the following is the equation of a line that passes through the point (1,4) and is parallel to the x-axis?

1 answer:

8 0

A because , well Y=4 and the points y coordinate is 4. And when a line is Y= a certain number, its a horizontal line parallel to x axis

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If you are 600 m from a batter when you see him hit a ball, how long will you wait to hear the sound of the bat hitting the ball

Molodets [167]

Answer:

The speed of sound at 20°C is 343.42 m/s.

You have to wait 1.75 seconds to hear the sound of the bat hitting the ball

Step-by-step explanation:

Speed of Sound

The speed of sound is not constant with temperature. Generally speaking, the greater the temperature, the greater the speed of sound.

The approximate speed of sound in dry air at temperatures T near 0°C is calculated from:

$\displaystyle v_{\mathrm {s} }=(331.3+0.606\cdot T )~~~\mathrm {m/s}$

The air is at T=20°C, thus the speed of sound is:

$\displaystyle v_{\mathrm {s} }=(331.3+0.606\cdot 20 )~~~\mathrm {m/s}$

$v_{\mathrm {s} }=343.42\ m/s$

The speed of sound at 20°C is 343.42 m/s.

To calculate the time to hear the sound after the batter hits the ball, we use the formula of constant speed motion:

$\displaystyle v=\frac{d}{t}$

Where d is the distance and t is the time. Solving for t:

$\displaystyle t=\frac{d}{v}$

Substituting the values v=343.42 m/s and d=600 m:

$\displaystyle t=\frac{600}{343.42}$

t = 1.75 s

You have to wait 1.75 seconds to hear the sound of the bat hitting the ball

6 0

3 years ago

Which expression is equivalent to (3-2^2) +5?

Arturiano [62]

The 3rd one is the right one!!!!!!!!!!!!!!!!!!

8 0

3 years ago

HELP PLEASE!!!

amm1812

$2300\cdot\frac{6}{100}=23*6=138$ ears of non edible corn

6 0

3 years ago

Logan made a treasure map he treasure is 25 cm away from his location if each 1 cm on the scale drawing equals 5 m then how far

Doss [256]

Logan is 125 meters away from the treasure.

Also, this question seems like an elementary school question, not a high school question, so why does it say that you are in high school?

8 0

3 years ago

Simplify x + x + y x y?

saw5 [17]

Answer: $2x+y^2$

Step-by-step explanation:

$x\:+\:x\:+\:y\:\cdot \:y$

$x+x+yy$

$2x+yy$

$2x+y^2$

8 0

3 years ago

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