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Mkey [24]
3 years ago
7

Which equation has no solutions? 0 32 +2= 4x + 2 0 32 +2= 20 0 32 +2=42 0 32 +2=2

Mathematics
1 answer:
Natasha2012 [34]3 years ago
6 0

Answer:

the second one

Step-by-step explanation:

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Two trains leave stations 360 miles apart at the same time and travel toward each other. One train travels at 70 miles per hour
cricket20 [7]
S=d/t     ⇒d=s*t
s=speed
d=distance
t=time

The first train :
d=x

x=70 miles/h*t                             ⇒   x=70t  (1)

The second train
d=360 miles - x

360 miles - x=80 miles/h*t          ⇒360-x=80t   ⇒ x=360-80t   (2)

therefore, with the equations (1) and (2) we have a systeme of equations:

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we can solve this system of equations by equalization method.

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3 years ago
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The term in the expansion:
T ( k+1) = n C k * A^(n-k) * B^k.
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A = x, B = - 3 y
T 8 = 11 C 7 * x^(11-7) * ( - 3 y )^7 =
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Answer: The 8th term in expansion is
 
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