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Sauron [17]
3 years ago
10

The sum of all the 2 digit numbers is .. plz give explanation too​

Mathematics
1 answer:
saw5 [17]3 years ago
3 0

Answer:

4905

Step-by-step explanation:

Sn= \frac{(a_1+a_n)}{2}*n\\\\Sn = \frac{10+99}{2}*90 = 4905

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If f(x)=4-11 what is the value of f(5)
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f(5) = 9

Do this by substitution:

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f(5) = 9

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What is the interquartile range of the data set below? Growth in feet of oak trees: 68,80,73,90,120,94,76,112,101,94,72 (1) 22  
sdas [7]
<span>68,80,73,90,120,94,76,112,101,94,72 --->
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HElp me there are two that have not been answered
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Answer: the answer is 34

Step-by-step explanation:

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5 0
3 years ago
I need a bit of help here.
kotykmax [81]

Answer:

Beginning in the 6th century BC with the Pythagoreans, the Ancient Greeks began a systematic study of mathematics as a subject in its own right with Greek mathematics. Around 300 BC, Euclid introduced the axiomatic method still used in mathematics today, consisting of definition, axiom, theorem, and proof.

Step-by-step explanation:

The first recorded zero appeared in Mesopotamia around 3 B.C. The Mayans invented it independently circa 4 A.D. It was later devised in India in the mid-fifth century, spread to Cambodia near the end of the seventh century, and into China and the Islamic countries at the end of the eighth.

3 0
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