3 years ago

Can someone tell me the answers

Mathematics

1 answer:

LiRa [457]3 years ago

4 0

Question 4- is 32.25
question 5- is 12.4
question 6 -is 14/17
question 7 - is 10.7

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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

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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

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