17.6 = 17 6/10 = 17 6÷2/10÷2 = 17 3/5
It is: 2*10-3 = 17
X2 + 10X - 13 = 17 add 13 to each side X2 + 10X = 30 halve the linear coefficient ( 10 ), square it and add it to both sides X2 + 10X + 25 = 30 + 25 factor on the left and gather terms on the right (X + 5)2 = 55 (X + 5)2 - 55 = 0 ---------------------------vertex form, (- 5, - 55 ), is the vertex -------------------------------------------[-------------------------------]
t(n) = 3(n-1) + 1, for n = 1, 2, 3, etc
13 10 17 15 21 13 - 10 = -3 10 - 17 = +7 17 - 15 = -2 15 - 21 = +6 The negative numbers alternate with the positive numbers The negative numbers are augmented by +1 each step The positive numbers are diminished by -1 each sterp So the next step from 21 is a negative and should be -2 increased by +1 to -1 giving a new value of 20 Then the next step is a positive and should be +6 decreased by -1 to +5 giving 25 13 - 10 = -3 10 - 17 = +7 17 - 15 = -2 15 - 21 = +6 21 - 20 = -1 20 - 25 = +5
2 9 5 13 10 19 17
Pattern: +7,-4,+8,-3,+9,-2... Pattern continuation: +10,-1,+11,*0,+12,+1 17+10=27
27
2 9 5 13 10 19 17 27 26 37 37
To find the pattern, simply look for the difference in the first two numbers, then the following pair of numbers, etc. 2 9 5 13 10 19 17 2 + 7 = 9 9 - 4 = 5 5 + 8 = 13 13 - 3 = 10 10 + 9 = 19 19 - 2 = 17 The pattern is +7, -4, +8, -3, +9, -2...
One.
10/17/2 is ambiguous. (10/17)/2 = 10/34 = 0.2941 (approx) while 10/(17/2) = 20/17 = 1.1765 (approx)
27 BUT, as far as I can tell, it does not complete the sequence which can continue further.
27. But that continues the sequence, it does not complete it.
what is the mean of -10, -5, 2, 6, 17
17.6 = 17 6/10 = 17 6÷2/10÷2 = 17 3/5
(32/5) / (51/10) = (17/5) / (51/10) = 17/5 * 10/51 = 17/1 * 2/51 = 1/1 * 2/3 = 2/3