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2 years ago

Find the 3rd term in the expansion of (a+b)^8 in simplest form.

Mathematics

1 answer:

Art [367]2 years ago

4 0

Answer:

The fifth term is the middle term of nine, with coefficient given by all the ways of choosing 4 items out of 8 , namely the ways of choosing 4 a 's out of 8 binomial factors.

Step-by-step explanation:

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How many significant figures will be in the answer when you multiply 3.4 x 4.56?

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There are 2 before the decimal point because 3×4=12 and 12 has two digits.
There are 3 after the decimal point because we add together the number of digits after the decimal point in the operands, which is 1 plus 2=3. In all then there are 2+3=5 significant figures.

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3 years ago

Evaluate. Express the answer in scientific notation and decimal notation. 4x1010 5x1014

Allisa [31]

Answer:

1. $40000000000$
2. $500000000000000$
(In case you were asking me to multiply, 20 × 10^24)

Step-by-step explanation:

Given the following questions:
$4\times10^{10}$
$5\times10^{14}$

In order to find the answers, we take note on how the exponents are positive. We also need to remember how integers always have invisible decimal points.

Question one:

$4\times10^{10}$
$4\times10^{10} =4.0.0.0.0.0.0.0.0.0.0.$
$4.0.0.0.0.0.0.0.0.0.0.=40000000000$
$40000000000$

Question two:

$5\times10^{14}$
$5\times10^{14}=5.0.0.0.0.0.0.0.0.0.0.0.0.0.0.$
$5.0.0.0.0.0.0.0.0.0.0.0.0.0.0.=500000000000000$
$500000000000000$

In case you were asking me to multiply:

$40000000000\times500000000000000=20000000000000000000000000$
$20000000000000000000000000=20\times10^{24}$
$20\times10^{24}$

Hope this helps.

5 0

2 years ago