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Dmitry_Shevchenko [17]
3 years ago
13

Write the first 5 terms of the arithmetic sequence whose first term is 8 and whose common difference is -6.

Mathematics
1 answer:
n200080 [17]3 years ago
6 0
The formula for arithmetic sequence is given by:
an=a+(n-1)d
where:
an=nth term
a=first term
n=number of terms
thus our first term will be:
a1=8
a2=8+(2-1)(-6)=2
a3=8+(3-1)(-6)=-4
a4=8+(4-1)(-6)=-10
a5=8+(5-1)(-6)=-16
a5=-16
thus the sequence will be:
8,2,-4,-10,-16...
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Sav [38]
D.) The mean will increase

The mean is all the numbers added together than divided by the amount of numbers there, so if you do this: 4 + 6 = 10 + 16 = 26 + 15 = 41/5 = 8.2

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6 0
3 years ago
For number 8 how do you factor the common factor out of the expression
kari74 [83]
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3 years ago
Find the sum of a finite arithmetic sequence from n=1 to n=18, using the expression 4n-10
Zarrin [17]
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We sum each term separately and add the sums.

\sum_1^{18}4k=4\sum_1^{18}k=4[18(1+18)/2]=4*9*19=684
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Therefore the required sum is 684-180=504
8 0
3 years ago
Read 2 more answers
How many terms are in the polynomial abcd + e-n2?<br>two<br>three<br>five<br>six​
ELEN [110]

Answer: There are 3 terms

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3 0
3 years ago
If z is inversely proportional to r, and z= 32 when r=1.5, find r when z=8.
lions [1.4K]
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Divide by 8
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8 0
3 years ago
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