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Ymorist [56]
3 years ago
10

9+8=17 what number sentence shows the commutative property of addition

Mathematics
1 answer:
WINSTONCH [101]3 years ago
3 0
The number sentence 9+8=18.
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5 biscuits cost 40p altogether how much do 3 biscuits cost
STALIN [3.7K]
If 5 biscuits cost 40p

1 biscuit would cost (40p divided by 5) 8p

8p multiplied by 3 (to get 3 biscuits) would cost 24p

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A new LED light bulb uses 10 watts of power. Since energy = power × time , then the energy used for this light bulb can be found
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Answer:

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Step-by-step explanation:

We know the energy per bulb is 10 Wh per hour, so the total energy used by 3 bulbs in 5 hours is ...

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5 0
3 years ago
What is wrong with the following proof that for every integer n, there is an integer k such that n < k < n + 2? Suppose n
expeople1 [14]

Answer:

c)The proof writer mentally assumed the conclusion. He wrote "suppose n is an arbitrary integer", but was really thinking "suppose n is an arbitrary integer, and suppose that for this n, there exists an integer k that satisfies n < k < n+2." Under those assumptions, it follows indeed that k must be n + 1, which justifies the word "therefore": but of course assuming the conclusion destroyed the validity of the proof.

Step-by-step explanation:

when we claim something as a hypothesis we can only conclude with therefore at the end of the proof. so assuming the conclusion nulify the proof from the beginning

4 0
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Thirty eight years ago George was 14. how old is he now
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This should help
https://math.tutorvista.com/geometry/surface-area-of-a-trapezoidal-prism.html?view=simple
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