Find the arithmetic means for the given sequence:

4, __, __, __, __, 19​

a= 4. b=19. n=4. d= b-a/n+1= (19-4)/(4+1)= 15/5=3. Hence, d=3.

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7  10  13   16

Step-by-step explanation:

a1 = 4

a6 = 19

n = 6

d = ?

a6  = a1 + (n - 1)d        

19 = 4 + (6 - 1)*d

19 - 4 = 5*d

15 = 5d

d = 15/5

d = 3

So the sequence is

4,7,10,13,16,19

Image result for Is 90° an acute angle, right angle, obtuse angle, or straight angle

A acute angle is less than 90 degrees,a right angles is 90 degrees,a obtuse angle is 90-180 degrees and a reflex is more than 180 degrees.

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