3 years ago

The midpoint between -7 and 8 is 1/2 t or f

Mathematics

1 answer:

hammer [34]3 years ago

6 0

Answer:

True

Step-by-step explanation:

The midpoint is the average of the values:

(-7 +8)/2 = 1/2

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The veloctiy of sound in air is given by the equation v=20 times the square root of 273+t where v is the velocity in meters per

Nikitich [7]

So we just need to plug in our values and solve
$v = 20 \sqrt{273 + t}$
we are given v is 369 so we have
$369 = 20 \sqrt{273 + x}$
now we solve for x.
divide both sides by 20
square both sides
subtract 273 from both sides
$369 = 20 \sqrt{273 + x} \\ 18.45 = \sqrt{273 + x} \\ 340.40 = 273 + x \\ x = 67.4$
so a temp of about 67 degrees C

5 0

3 years ago

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zheka24 [161]

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