Critique the reasoning of others. oriana said that the difference between 9.298 and 3.01 was 8.997.
was she correct? if not, what error did she make?

Oriana was not correct, because she didn't line up the decimal points of the numbers and

Step-by-step explanation:

By definition, the "Difference" is the result of a subtraction.

In order to subtract the decimal numbers and , Oriana needed to apply these steps:

1. Write one number under the other. The decimal points must be lined up:

2. Since the decimal numbers must have the same number of decimal places, she needed to add zeros to the right side:

3. Subtract the numbers and put the decimal point in the result:

 Oriana was not correct, because she didn't line up the decimal points. Her procedure was:

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!