I think the answer is the third one
A1 = first term
a1 = 15
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d = common difference
d = (second term) - (first term)
d = a2 - a1
d = 9-12
d = -3
The negative common difference indicates that the terms are decreasing
Each time we subtract 3, or add -3, to get the next term.
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nth term of arithmetic sequence
an = a1 + d(n-1)
an = 15 + (-3)(n-1)
an = 15- 3n + 3
an = 18 - 3n
Answer is choice D
Total amount spend by Joel is $9
<u>Given that;</u>
Entering fees = $4
Each game play cost = $1.25
Number of game Joel play = 4
<u>Find:</u>
Total amount spend by Joel
<u>Computation:</u>
Assume;
Total amount spend by Joel = T
number of game play by Joel = N
So,
T = 4 + 1.25N
Total amount spend by Joel = 4 + 1.25N
Total amount spend by Joel = 4 + 1.25(4)
Total amount spend by Joel = 4 + 5
Total amount spend by Joel = $9
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W = width
l = length = 9
Perimeter = 2*w+2*l
Normally you would face the whole perimeter but "t<span>he side of the kennel against your house does not need a fence.</span>" So you actually fence 2*w+1*l
2w+l=25
2w+9=25
2w=16
w=8
The dimensions of the kennel are:
w=8 ft
l=9ft
Answer:
im pretty sure it's d
Step-by-step explanation:
because i put that and i got a good grade
