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LUCKY_DIMON [66]
4 years ago
12

Complete the recursive formula of the arithmetic sequence 20,26,32,38

Mathematics
1 answer:
givi [52]3 years ago
5 0

A recursive formula for a sequence expresses the n-th term as a function of the previous one(s).

In this case, you can see that every term is 6 more than the previous one.

So, the recursive formula is "the n-th term is 6 more than the n-1-th term".

In formula, it's written

a_n=a_{n-1}+6

Since the recursion could go back indefinitely, we usually set a starting point, so that the sequence is fully determined:

\begin{cases}a_0=20\\a_n=a_{n-1}+6\end{cases}

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Super easy, simply add the amount of rides in Options 1 and 2. Option 1 offers 8 coasters and 5 other rides. 8+5=13.

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Option 2 suggests 9 coasters and 3 rides. 9+3=12. This is doable.

The answer is B. Option 2 Only

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4 0
3 years ago
A flagpole broke in a storm. It was originally 81 feet tall. 28 feet are still sticking straight out of the ground, where it sna
Nina [5.8K]
Hidden right triangle
28 feet tall (1 leg)
the piece that fell over is the hypotonuse
last leg is what we need to find

81-28=53


a²+b²=c²
a and b are legs and c is the hypotonuse

given
on leg is 28 and the hypotonuse is 53
th othe leg is b
28²+b²=53²
784+b²=2809
minus 784 from both sides
b²=2025
sqrt both sides
b=45

answer is 45ft
4 0
3 years ago
Read 2 more answers
If n = 8, evaluate 26 - 3 (n + 8) ÷ 4
sasho [114]

Answer:

14

Step-by-step explanation:

PLUG 8 in for n.  Use the order of operations to evaluate.  26-3(8+8)/4=

becomes: 26-3(16)/4=; multiply 3 x 16 = 48, use order of operations to divide 48/4=12. Then problem becomes: 26-12 = 14.

7 0
3 years ago
A store down the street is selling a used video game for 25% off the retail price. The game regularly sells for $89.00. What is
Dafna1 [17]
89.00 times .75 (new cost of item is 75% of original) =

66.75

therefor you answer is 

D) $66.75
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What’s the actual question
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