Carlos needs to memorize words on a vocabulary list for French class. He has memorized 30 of the words, which is three-fifths of the list. How many words are on the list?
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a neat trick for this problem is that you can easily multiply 3 by a number to make it 30. (3x10=30). using the same number, multiply it by the denominator. 5x10=50. the answer is 50 (3/5 x 10/10 = 30/50 without changing the original ratio)
in japan, farmers have created watermelons in the shape of rectangular prisms. find the volume of a prism-shaped watermelon in cubic inches if its length is 10 inches, its width is 2/3 foot, and its height is 9 inches
Volume of rectangular prism = length * width * height V = 10 inches * 8 inches * 9 inches V = 720 in³
Michael drives 143 km from town A to town B in 2 hours 36 minutes. He then drives from town B to town C at the same speed and it takes 21 minutes. (a) Work out Michael’s average speed from town A to town B.urgent plzzzzzzzzzzzz
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To town b. Urban dictionary is a good way to add
A person playing a game of chance has a 0.25 probability of winning. If the person plays the game 20 times and wins half of that number of times, what is the difference between the theoretical probability and the experimental probability of that person winning ?
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The theoretical probability is what is expected to happen which is 0.25 or 25%. The experimental probability is the actual or observed during the play. Since the person won half of 20 games, the experimental probability is 10/20 or 50%.
The difference between the theoretical and experimental probability is then
50%-25%=25% or 0.25
We note that the experimental probability is higher than the theoretical. However, as more games are played, the fraction of games won becomes closer and closer to the theoretical probability.
Tomas bought a book that cost $18. it was on sale for 84% of its original price. how much did tomas pay
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Answer: 15.12
Step-by-step explanation:
84% of 18
=84/ 100 × 18
=84× 18 / 100
=1512/100
=15.12
The original price is $15.12
You said so yourself, Tomas paid $18. The original price of the book was about $21.43.
the gathering of information about public opinion by questioning a representative sample of the population is