2 years ago

NO LINKS PLEASE- OR I SWEAR-

Mathematics

1 answer:

lesantik [10]2 years ago

5 0

Answer:

Step-by-step explanation:

To find the mean;

add up the data

(50+60+60+70) =240

Then divide by the number of data points

240/4 = 60

The mean is 60

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

AlladinOne [14]

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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3 years ago

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Rzqust [24]

Answer:

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Step-by-step explanation:

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Use the formula $(a+b)(a-b)=a^2-b^2$ .

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\boxed{(4+3i)(4-3i)=25}$

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Anuta_ua [19.1K]

Answer:

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Step-by-step explanation:

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What's the equation for the line that passes through the given point and is parallel to the graph of the given line (3,-1);y=2x-

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