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GuDViN [60]
3 years ago
13

How do I write a recursive formula for this sequence? 2, 6, 18, 54, 162, ... I already know the common difference is x3.

Mathematics
1 answer:
dmitriy555 [2]3 years ago
4 0
For the sequence 2, 6, 18, 54, ..., the explicit formula is: an = a1 ! rn"1 = 2 ! 3n"1 , and the recursive formula is: a1 = 2, an+1 = an ! 3 . In each case, successively replacing n by 1, 2, 3, ... will yield the terms of the sequence. See the examples below.
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5a + 18 < −27 pre algibra
Grace [21]

Answer:

X < -9

Step-by-step explanation:

5a +18 < -27

5a < -27 -18

5a < - 45

5a/5 < - 45/5

a < - 9

Answred by Gauthmath

5 0
2 years ago
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Which table represents a linear function?
mart [117]
Well, a linear function is proportional, a straight line (on a graph). And the numbers must not have the same answer. For instance, if the X input is 5, and the Y output is 7. And then another X input is 5, and the Y output is 8, that's non-linear.

So, the Answer would be the third graph. This is because the X values are steadily increasing, and so are the Y values. 

For the X and Y values, for each time X increases by 1, Y increases by -8. This is, linear because both sides are constantly and evenly increasing.

6 0
3 years ago
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Geri ran in a marathon race. It took her 3 hours and 28 minutes to run 26 miles. How many minutes did it take her to run 1 mile
nadya68 [22]

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Divide her total time by total miles run:

208 minutes / 26 miles = 8 minutes per mile.

5 0
3 years ago
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SOLVE APPLICATION USING ALGEBRA. TYPE THE EQUATION OR INEQUALITY AND PLEASE SHOW WORK. a) A rectangle with perimeter 18 cm has l
alekssr [168]

Answer:

w=2\\l=7

Step-by-step explanation:

l+l+w+w=18\\\\2w+3=l\\\\2w+3+2w+3+w+w=18\\6w+6=18\\6w=12\\w=2\\\\2w+3=l\\2*2+3=l\\4+3=l\\l=7

4 0
3 years ago
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Which of the following represents the graph of f(x) = 2(x + 3)?
Yuliya22 [10]
We have that

the correct expression is
y=2<span>^</span>(x+3)

using a graph tool
see the attached figure

the answer is the option C

3 0
3 years ago
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