Which expression completes the following equation? 3 × 31 = A. 31 × 3 B. 31 - 3 C. 31 ÷ 3 D. 31 + 3

1 answer:

5 0

Hello! The answer has to do with multiplication and 3 * 31 is 93. Adding, subtracting, and dividing will not give you the same answer. 3 * 31 = 31 * 3 demonstrates the communtative property and A is the only one that makes sense. The answer is A: 31 * 3.

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A football stadium contain 80% of its full capacity of spectators for a grand final match. At the end of the game, spectators le

nekit [7.7K]

Answer:

A. 30000

B. 12000

Step-by-step explanation:

Find out how much spectators leave in 1 minute.

1 second = 5

1 minute = 5 x 60 = 300 (60 seconds)

20 minutes = 300 x 20 = 6000

Since there were only 80% of the full capacity of spectators and after minutes it became 60%...

80% - 60% = 20%

20% = 6000

1% = 6000 ÷ 20 = 300

100% = 300 x 100 = 30000

1 minute = 300 spectators leaving

1 hour = 300 x 60 = 18000 (60 minutes)

30000 - 18000 = 12000

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3 years ago

5+(x-5)=x justify each step

max2010maxim [7]

5+(x-5)=x

Simplify the left side by combining like terms:

5 + x - 5 = x

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X = All real numbers.

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3 years ago