3 years ago

Type the expression that results from the following series of steps:

Mathematics

1 answer:

Dahasolnce [82]3 years ago

4 0

Answer:3x+6

Step-by-step explanation:

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What is the product of (-6.8)^2

zlopas [31]

-6.8^2

You can do this with a calculator or pen and paper.

With a calculator;

-6.8 squared = 46.24 (Notice that the answer is positive!)

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lara31 [8.8K]

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Answer:

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Step-by-step explanation:

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3 years ago

Calculate s5 for the sequence defined by

pantera1 [17]

ANSWER

$S_5= 42.5$

EXPLANATION

The general term of the arithmetic sequence is

$a_n=1+\frac{5}{2}n$

For the first term,we substitute $n=1$ to get,

$a_1=1+\frac{5}{2}\times 1$

$a_1=1+2.5=3.5$

Similarly

$a_5=1+\frac{5}{2}\times 5$

$a_5=13.5$

The sum of the first n-terms is given by the formula,

$S_n=\frac{n}{2}(a_1+l)$

where l is the last term.
In this case

$l=a_5=13.5$

We substitute these values to get,

$S_5= \frac{5}{2} (3.5 + 13.5)$

$S_5= \frac{5}{2} (17)$
$S_5=42.5$

We could have also used the formula,

$S_n=\frac{n}{2}(2a_1+(n-1)d)$

$S_5=\frac{5}{2}(2(3.5)+(5-1)2.5)$

$S_5=42.5$

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What is another word for output in geometry

Paul [167]

Answer:

range

Step-by-step explanation:

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