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3 years ago

(4.7 x 10^5) + (2.8 x 10^3)

Mathematics

2 answers:

madreJ [45]3 years ago

6 0

Answer:

472800

= 4.728 × 10⁵

Step-by-step explanation:

(4.7 × 10⁵) + (2.8 × 10³)

4.7 × 10⁵ + 2.8 × 10³

(4.7 × 10²+ 2.8) × 10³

(4.7 × 100 + 2.8) × 1000

(470 + 2.8) × 1000

472.8 × 1000

= 472800

= 4.728 × 10⁵

EleoNora [17]3 years ago

3 0

Answer:

472800 or 4.728x10^5

Step-by-step explanation:

first you would slove (4.7x10^5) and (2.8x 10^3). Which would be 470000 and 2800. Then add the two together to get 472800. And if they want you to put it back into scientific notation then it would be 4.728x10^5

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Find out the number of combinations and the number of permutations for 8 objects taken 6 at a time. Express your answer in exact

umka2103 [35]

Solution:

The permutation formula is expressed as

$\begin{gathered} P^n_r=\frac{n!}{(n-r)!} \\ \end{gathered}$

The combination formula is expressed as

$\begin{gathered} C^n_r=\frac{n!}{(n-r)!r!} \\ \\ \end{gathered}$

where

$\begin{gathered} n\Rightarrow total\text{ number of objects} \\ r\Rightarrow number\text{ of object selected} \end{gathered}$

Given that 6 objects are taken at a time from 8, this implies that

$\begin{gathered} n=8 \\ r=6 \end{gathered}$

Thus,

Number of permuations:

$\begin{gathered} P^8_6=\frac{8!}{(8-6)!} \\ =\frac{8!}{2!}=\frac{8\times7\times6\times5\times4\times3\times2!}{2!} \\ 2!\text{ cancel out, thus we have} \\ \begin{equation*} 8\times7\times6\times5\times4\times3 \end{equation*} \\ \Rightarrow P_6^8=20160 \end{gathered}$

Number of combinations:

$\begin{gathered} C^8_6=\frac{8!}{(8-6)!6!} \\ =\frac{8!}{2!\times6!}=\frac{8\times7\times6!}{6!\times2\times1} \\ 6!\text{ cancel out, thus we have} \\ \frac{8\times7}{2} \\ \Rightarrow C_6^8=28 \end{gathered}$

Hence, there are 28 combinations and 20160 permutations.

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What is a trinomial?

Kay [80]

Answer:

In elementary algebra, a trinomial is a polynomial consisting of three terms or monomials.

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The value of <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B%20-%2025%7D%20" id="TexFormula1" title=" \sqrt{ - 25} " alt=" \

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The answer is 900,000?

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The mass of earth is 5.9 x 10^24. The mass of Pluto is 13,000,000,000,000,000,000,000 kg. Compared to Pluto, how much greater is

nadya68 [22]

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