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icang [17]
3 years ago
6

A certain alloy contains 5.25% copper. How much copper is there I a piece weighing 200 pounds?

Mathematics
2 answers:
Aliun [14]3 years ago
8 0
10.5 lb
You can look at the question as 5.25% of 200 pounds. The "of" means to multiply so you would multiply 5.25% by 200. 5.25% can be written as 0.0525(dividing by 100, since percent is of 100).

0.0525*200=10.5 lb
kykrilka [37]3 years ago
4 0
Find 5.25% of 200
remember
1% of 100=1
therefor
1% of 200=2
just remove the decimal and double it (for this special case of finding percent of 200)

5.25% of 200=5.25 times 2=10.5
answer is 10.5 pounds of copper
(the legit way is 0.0525 times 200=10.5 pound)


10.5lb is answer
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The probability that suits of cards are spades, hearts, and spades is 39/850 or 0.046.

According to the give question.

Three cards are drawn from a standard deck of cards without replacement.

Since,

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Now,

The probabbility of getting first card as a spade card = 13/52 = 1/4

The probability of getting second card as heart card

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The probability of getting third card as a spade card

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Hence, the probability that suits of cards are spades, hearts, and spades is 39/850 or 0.046.

Find out more information about probability here:

brainly.com/question/11234923

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