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swat32
3 years ago
9

Find the first six terms of the sequence. a1=-7, an=2*an-1

Mathematics
1 answer:
AlladinOne [14]3 years ago
3 0
The first term of the sequence is a_{1} = -7 . 

The sequences is recursive, every next term of the sequence is obtained by multiplying the previous term by 2.

So, we can find the next 6 terms as shown below:

a_{2} = 2*a_{1}=2(-7)=-14 
a_{3} = 2(-14)=-28 
a_{4} = 2(-28)=-56 
a_{5} = 2(-56)=-112 
a_{6} = 2(-112)=-224 
a_{7} = 2(-224)=-448 
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Answer:

C) 7

Step-by-step explanation:

3^x−2=2187

Step 1: Add 2 to both sides.

3^x−2+2=2187+2

3^x=2189

Step 2: Solve Exponent.

3^x=2189

log(3x)=log(2189)        <<Take log of both sides

x*(log(3))=log(2189)

x= log(2189)/log(3)

x=7.000832

4 0
3 years ago
A Ship travels at a steady Speed.
SpyIntel [72]

Answer:

speed=24km/h or 6.67m/s

Step-by-step explanation:

Given data:

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distance covered = d = 1032 km

to find:

speed of the ship = v =?

solution:

as we know that speed is defined as the distance covered by an object in unit time.Formula

speed = distance covered /time taken

speed = 1032km/43hours

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4 0
4 years ago
John has 333 colored ribbons described below.
nikdorinn [45]

Answer:

B

Step-by-step explanation:

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3 years ago
I need help completing this problem ASAP
Evgen [1.6K]

Answer:

8 sqrt(5)

Step-by-step explanation:

sqrt(45) + sqrt(125)

Rewriting

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