Answer:
Step-by-step explanation:
3x³ + x - 4 - (4x² + 2x - 5) = 3x³ + x - 4 - 4x² - 2x + 5
Now combine like terms
= 3x³ - 4x² + <u>x - 2x</u> <u>- 4 + 5</u>
= 3x³ - 4x² -x + 1
2/5 = (2x2)/(5x2) = 4/10 = 0.4
3.75, 3.9, 4.256, 4.258, 4.5
So how do you find out? It is really easy.
First you look the the number, we all know 3 is less then 4 so the 3s go first
Then you look the tenths, the choices are 3.75 and 3.9. The tenth 9 and 7, and we all know 7 is less then 9, so 3.75 is the first one, then 3.9.
Now let's look at the 4s. The choices are 4.5, 4.258, and 4.256. The tenths are 5, 2, and 2. 2 is less then 5 so they go before 4.5.
Then we look at the hundredth, the choices are 4.256 and 4.258. Since they have same hundreds, we look at the thousands. They are 6 and 8. 6 is less then 8 so 4.256 go before 4.258.
