The answer is choice C
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You start off with the first term being a1 = 3
Then you add on 3 to get to 6 as the second term
The next thing to do is add on -3, which is the same as subtracting 3, to get back to 3 once more.
This pattern continues on forever. To ensure you add on either +3 or -3 to the previous term, we add on the general term 3*(-1)^n
Overall, the nth term is found by a(n) = a(n-1) + 3*(-1)^n, which is what choice C shows. I'm assuming your teacher meant to write 3(-1)^n instead of 3(-1)n
Answer:
Area= L*W= 13*7 = 91ft^2
Step-by-step explanation:
L= 6+W
Perimeter of the rectangle=2(L+W)=40
2(6+W+W)=40
2(6+2W)=40
12+4W=40
4W=40-12
4W=28
W=28/4
W=7ft
L=6+7=13ft
Area=L*W=13*7=91ft^2
Answer:
2.33944954128
Step-by-step explanation:
Answer:
The temperature changed by 45°F
.
Step-by-step explanation:
-5°F to 0°F = 5°F and 0°F to 40°F = 40°F
5° + 40° = 45°F
Answer:
20/9
Step-by-step explanation:
Find the GCD (or HCF) of numerator and denominator
GCD of 80 and 36 is 4
Divide both the numerator and denominator by the GCD
80 ÷ 4
36 ÷ 4
Reduced fraction: 20/9
