4)
y
40
16
4
24
36
5) 4 5/12
9) <
The <em><u>correct answer</u></em> is:
They had no placeholding zero.
Explanation:
Our numbering system is one of few known to have a numeral for zero. Mayans did; however, theirs never traveled the world. Babylonians were thought to have a mark for nothing, but it was more for punctuation than numerals. Neither the Romans nor the Egyptians had a number for 0 either.
Zero is key to our system of numbering, as it helps us hold place as well as representing nothing. Without it, it is easier to represent problems in words.
Answer:
w < 9
Step-by-step explanation:
w + 9 < 18
To solve this inequality, we MUST get the w by itself
Subtraction Property of Equality w + 9 - 9 < 18 - 9
Answer w < 9
Using the percentile concept, it is found that the maximum age of the youngest 25% of the passengers is of 30.
<h3>What is the percentile concept?</h3>
When a measure is in the xth percentile of a data-set, it is greater than x% of the measures and lesser than (100 - x)%.
Researching the problem on the internet, it is found that the distribution of the ages is described by a box and whisker plot, which states that:
- The 25th percentile is of 30.
- The 75th percentile is of 60.
Hence, the maximum age of the youngest 25% of the passengers is of 30.
More can be learned about the percentile concept at brainly.com/question/24495213
The answer is 3/52.
There are 12 face cards in a standard deck, so the probability of the first card is 12/52 = 3/13.
After replacement, there are 13 diamonds in the deck that still contains 52 cards; 13/52 = 1/4.
Together the probability is 3/13(1/4) = 3/52.