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Zepler [3.9K]
3 years ago
15

What is the sum of the first 10 terms of the sequence defined by an=2n-3

Mathematics
2 answers:
nevsk [136]3 years ago
7 0

Answer: The sum of the first ten terms of the sequence is 80

makvit [3.9K]3 years ago
5 0
a_n = 2n - 3

\text {When n = 10,}

a_{10} = 2(10) - 3

a_{10} = 17 \text { Answer (B)}

------------------------------------------
Answer: The 10th term is 17.
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The angles of one triangle are in ratio x : 2x : 5x and the angles of another triangle are in the ratio x : 2x : 3x . The two tr
goldenfox [79]
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8 0
3 years ago
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How can you use a right angle to determine the classification of another angle
zimovet [89]
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7 0
4 years ago
Can a triangle have side measurements of 1, 4 and 5? Why or why not
Vladimir79 [104]

Answer:

A triangle cannot have side measurements of 1, 4 and 5.

As the sum of two sides i.e. '1+4' of a triangle is not greater than the measure of the third side i.e. '5'.

Step-by-step explanation:

The Triangle Inequality Theorem states that the sum of any two sides of a triangle must be greater than the measure of the third side.

For example, a triangle ΔABC must follow the three conditions which are as follows:

  • A + B > C
  • B + C > A
  • A + C > B

For example, a triangle ΔABC with side lengths:

A = 1

B = 4

C = 5

  • A + B > C    →   1 + 4 > 5      (FALSE)
  • B + C > A    →   4 + 5 > 1      (TRUE)
  • A + C > B    →    1 + 5 > 4     (TRUE)

As the condition i.e. A + B > C    →   1 + 4 > 5  is not satisfied, as 1 + 4 > 5 is False.

Therefore, a triangle cannot have side measurements of 1, 4 and 5.

7 0
3 years ago
What is 65% of 300!???
anastassius [24]
300 x 0.65 = 195.

65% of 300 is 195. 
7 0
4 years ago
Read 2 more answers
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