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12345 [234]
3 years ago
15

Literal Equations: -5c + d = 2c, for c

Mathematics
1 answer:
Vikentia [17]3 years ago
8 0
-5c + d = 2c         Subtract d from both sides
      -5c = 2c - d    Subtract 2c from both sides
      -7c = -d          Divide both sides by -7
         c = \frac{-d}{-7}   Cancel out the \frac{-1}{-1}
         c = \frac{d}{7}
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Step-by-step explanation:

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(6x2 + x - 3)(2x2 +1)
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3 years ago
A pyrotechnician plans for two fireworks to explode together at the same height in the air. They travel at speeds shown below. F
ICE Princess25 [194]

Answer:

both fireworks will explode 4.5 seconds after  Firework B launches

Step-by-step explanation:

Given;

speed of firework A, V_A= 360 ft/s

speed of firework B, V_B = 340 ft/s

If the two fireworks explodes at the same height, then the height attained by the two fireworks are equal.

let the distance traveled by each firework before explosion = d

Distance = speed x time

Distance A = Distance B

speed A x time = speed B x time

let the time both fireworks explodes after Firework B launches = t

(V_A) t = (V_B ) t

360t = 340t

if firework B is launched 0.25 s before Firework A, for the time of the two fireworks to be equal since we are considering time (t) after 0.25 seconds, we will have;

360(t-0.25) = 340t

360t  - 90 = 340t

360 t - 340 t = 90

20 t = 90

t = 90/20

t = 4.5 seconds

Therefore, both fireworks will explode 4.5 seconds after  Firework B launches

7 0
3 years ago
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