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patriot [66]
2 years ago
15

5. Simplify: (3x²y²1³ EC A. 3x5y5 B. 9x5y5 C. 9x6y6 D. 27x6y6

Mathematics
1 answer:
Mnenie [13.5K]2 years ago
8 0

Answer:

D. 27x^3y^3

Step-by-step explanation:

The exponent at the end that is above and outside the parenthesis of the whole thing, needs to be passed out to each piece inside the parenthesis. See image. 3^3 is 27 and a power to a power, you multiply the exponents. See image.

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Ostrovityanka [42]
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3 years ago
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I need help on number 5
makkiz [27]

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3 years ago
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An airplane flying with the wind can cover a certain distance in 2 hours. The return trip against the wind takes 2.5 hours. Find
Anna [14]

Answer:

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Step-by-step explanation:

Given that :

Distance = 600 miles

Let speed of airplane = a ; speed of wind = b

Net speed ; with wind = a + b

Net speed against wind = a - b

Time taken with wind = 2 hours

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Recall :

Speed = distance / time ; distance = speed * time

(a + b) * 2 = (a - b) * 2.5

2a + 2b = 600

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b = 30

a = 300 - 30

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Wind speed = 30 mph

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4 0
2 years ago
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