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swat32
3 years ago
15

A geometric sequence is defined by the explicit formula an = 3(-5)n-1. What is the recursive formula for the nth term of this se

quence?
Mathematics
1 answer:
bazaltina [42]3 years ago
5 0
The first term(a1) is 3
The second term (a2) is obtained by multiplying 3*(-5)
The third term A3 by multiplying 3 * -5 -5 = a2 times -5
Than you go on and one with that
But your answer is
A1=3;an+1=an(-5)
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Expand and combine like terms.<br> (3c^4-5c^6)^2
lora16 [44]

Answer:

9c^{8} -30c^{10} + 25c^{12}

Step-by-step explanation:

We can use formula (a-b)² = a² -2ab + b².

In our example a = 3c^4 and b = 5c^6

(3c^{4} - 5c^{6})^{2} = [3c^{4} ]^{2} - 2*3c^{4} *5c^{6} + [5c^{6}]^{2}=\\=9c^{8} -30c^{10} + 25c^{12}

4 0
3 years ago
A road sign gives drivers information about traffic on busy highways. One sign shows 15 miles in 20 minutes. What is this speed
SIZIF [17.4K]

Answer: Speed in miles per hour is 45 mph.

Step-by-step explanation:

Since we have given that

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We need to calculate the speed in miles per hour ,

As we know the formula for " Speed " i.e.

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Now, we will put the value of distance and time in the above formula:

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Hence, Speed in miles per hour is 45 mph.

8 0
3 years ago
Read 2 more answers
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Answer:

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B) -2,-7

C) 25,36

D) These numbers are square roots of 1,2,3,4,....

Hope this will help:)

5 0
3 years ago
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Simplify<br><br> Will mark brainliest, please show work if possible
Reil [10]
The answer for this question is 8/1

5 0
3 years ago
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