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vlabodo [156]
2 years ago
6

5. Which side lengths could not form a triangle?

Mathematics
2 answers:
romanna [79]2 years ago
6 0

Answer:

A, B, C, D

Step-by-step explanation:

A is equal to 54, B is equal to 23, C is equal to 72, and D is equal to 84.

brilliants [131]2 years ago
5 0
Answer: A

Explanation: To find out if three numbers are a triangle, you would add up the two lower numbers and see if its higher then the biggest number.

13 + 13 = 26.
26 is NOT bigger than 28, meaning it cannot form a triangle.
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3 years ago
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What is the sum of the first 4 terms of the arithmetic sequence in which the 8th term is 10 and the 14th term is 29.5?
Sholpan [36]

Answer:

Sum of the first 4 terms is

14.50

Explanation:

In an arithmetic sequence, whose first term is

a

and difference between a term and its preceding term is

d

,

the

n

t

h

term is

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+

(

n

−

1

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d

and sum of first

n

terms is

n

2

(

2

a

+

(

n

−

1

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d

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Hence

6

t

h

term will be

a

+

5

d

=

8

and

10

t

h

term will be

a

+

9

d

=

13

Subtracting first from second,

4

d

=

5

or

d

=

1.25

and

a

=

8

−

5

⋅

1.25

=

8

−

6.25

=

1.75

Hence sum of first four terms is

4

2

⋅

(

2

⋅

1.75

+

3

⋅

1.25

)

=

2

⋅

(

3.5

+

3.75

)

=

2

⋅

7.25

=

14.50

8 0
2 years ago
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no

Step-by-step explanation:

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612500

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