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3 years ago

What is scientific notation and why is it important

2 answers:

7 0

Scientific notation is shorthand for writing really big or really small numbers. Without it we could not do certain calculations because there would be just too many digits and it would be tedious.

For example:
writing out the numbers in standard form..
1,440,000,000 ÷ 0.0000012 = ???
= 1,200,000,000,000,000

Scientific notation...
144×10^7 ÷ 12×10^-7 = 12×10^14

Komok [63]3 years ago

5 0

Scientific notation, is a way of writing numbers that accommodates values that's too large or too small to be conveniently written or comprehended in standard decimal notation. ... Scientific notation is important to modern society because it provides to people working with these numbers.

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To Cool Auto pays commission based on the profit they

ss7ja [257]

Answer:

The answer is below

Step-by-step explanation:

Let x represent the profit made from sales and c(x) the commission based on sells. If the profit is less then $1000,they 21%, hence:

if x < 1000, c(x) = 0.21x

If the profit is less between $1000 and $1200,they 22.5%, hence:

if 1000 < x < 1200, c(x) = 0.225x

If the profit is greater than $1200,they 23.5%, hence:

if x > 1200, c(x) = 0.235x

Therefore the commission represented as a piecewise function is:

$c(x)=\left \{ {{0.21x\ \ x$

8 0

3 years ago

For which equation would x = 5 be a solution?

tresset_1 [31]

Answer:

The second option.

3x + 6 = 21.

Step-by-step explanation:

3x + 6 = 21.

If x = 5, plug it in.

3 · 5 + 6 = 21

15 + 6 = 21

Hope this helps,

Davinia.

7 0

3 years ago

Answer fast, please. I need help on it!

Rasek [7]

Answer:

Missing temp: -5

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Reduce the following fraction: -36x^4y^4z^5/-12x^6y^3z

Evgesh-ka [11]

$\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\
a^{-{ n}} \implies \cfrac{1}{a^{ n}}
\qquad \qquad
\cfrac{1}{a^{ n}}\implies a^{-{ n}}
\qquad \qquad 
a^{{{ n}}}\implies \cfrac{1}{a^{-{{ n}}}}\\\\
-------------------------------\\\\$

$\bf \cfrac{-36x^4y^4z^5}{-12x^6y^3z}\quad 
\begin{cases}
36=2\cdot 2\cdot 3\cdot 3\\
12=2\cdot 2\cdot 3
\end{cases}\implies \cfrac{-36}{-12}\cdot \cfrac{x^4y^4z^5}{x^6y^3z^1}
\\\\\\
\cfrac{\underline{-2\cdot 2\cdot 3}\cdot 3}{\underline{-2\cdot 2\cdot 3}}\cdot \cfrac{x^4y^4z^5x^{-6}y^{-3}z^{-1}}{1}\implies \cfrac{3}{1}\cdot 
\cfrac{x^4x^{-6}y^4y^{-3}z^5z^{-1}}{1}$

$\bf \cfrac{3}{1}\cdot \cfrac{x^{4-6}y^{4-3}z^{5-1}}{1}\implies 
\cfrac{3}{1}\cdot\cfrac{x^{-2}y^{1}z^4}{1}\implies 
\cfrac{3x^{-2}yz^4}{1}\implies \cfrac{3yz^4}{x^2}$

6 0

3 years ago

What is the value of 5x 3 when x = 4?

GrogVix [38]

4=5x-3
7=5x 
7/5=x 
1.4=x

3 0

3 years ago