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Rudik [331]
3 years ago
12

Evaluate the exponential expression. 3•42

Mathematics
1 answer:
LuckyWell [14K]3 years ago
8 0

Answer:

48

Step-by-step explanation:

Trust me

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3(x+9)-4x=11x-13x+23
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Answer:

\huge\boxed{x=-4}

Step-by-step explanation:

3(x+9)-4x=11x-13x+23\\\\(3)(x)+(3)(9)-4x=(11x-13x)+23\\\\3x+27-4x=-2x+23\\\\(3x-4x)+27=-2x+23\\\\-x+27=-2x+23\qquad|\text{subtrsact 27 from both sides}\\\\-x=-2x-4\qquad|\text{add}\ 2x\ \text{to both sides}\\\\x=-4

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a loaded truck is traveling 20 mph faster than a freight train. In the time it takes the train to travel 160 miles, the truck tr
almond37 [142]
Speed of trucks= x speed of trains =x-30 A loaded
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Step-by-step explanation:

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