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natulia [17]
3 years ago
5

Solve for a. -1/4a - 4 = 7/4a -3 A=

Mathematics
1 answer:
irakobra [83]3 years ago
3 0

Answer:

a = -1/2

Step-by-step explanation:

- 1/4a - 4 = 7/4a - 3

- 1/4a - 7/4a = - 3 + 4

- 8/4a = 1

- a = 1 / 8/4

- a = 1 * 4/8

- a = 4/8

- a = 1/2

a = - 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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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
Ben bought a Rolex for $150,000 with a 100%<br> markup, how much will it cost?
FromTheMoon [43]

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Step-by-step explanation

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