Answer:
| -3 | = 3
Step-by-step explanation:
minus is removed
Answer:
3
4
5
9
2
Step-by-step explanation:
Answer: B. quadrilateral
Step-by-step explanation:
A quadrilateral is used to describe polygons with four sides. Polygons are two dimensional shapes that are closed. and have sides that are straight.
Parallelograms, rectangles, rhombuses, trapezoids are all four sided polygons as they are closed and have straight sides and so fall under the umbrella term for shapes with four sides, Quadrilateral.
Answer: +24 (last option)
Step-by-step explanation:
The level of reference is the sea level, then you can say that the sea level is at 0 feet.
The measures below the sea level are negative and the measures above the sea level are positive.
Therefore, if the elevation of a town is 24 feet above sea level, then the asnwer is: +24
The mistake that Danielle made is from the final equation of the polynomial. She did not write the degree of polynomial correctly. It should be 6x⁶ +2x²+ 2x - 8.
<h3>What is polynomial?</h3>
A polynomial is defined as a mathematical expression that has a minimum of two terms containing variables or numbers. A polynomial can have more than one term.
To determine the sum of x³ + 5x²-7 and 5x³ - 3x² + 2x - 1
Danielle's Work :
(x³ + 5x² - 7) + (5x³ - 3x² + 2x - 1)
x³ + 5x³ + 5x² - 3x² + 2x - 7 - 1
6x⁶ +2x⁴ + 2x - 8
She did not write the degree of polynomial correctly
Correct Work :
(x³ + 5x² - 7) + (5x³ - 3x² + 2x - 1)
we have to open the brackets above
x³ + 5x² - 7 + 5x³ - 3x² + 2x - 1
x³ + 5x³ + 5x² - 3x² + 2x - 7 - 1
6x⁶ +2x²+ 2x - 8
Note that Danielle made the error in this step: 6x⁶ +2x⁴ + 2x - 8
The solution for the above is -2x² and not 2x⁴ as she wrote in her final equation.
Hence, the correct polynomial would be 6x⁶ +2x²+ 2x - 8
Learn more about polynomial here:
brainly.com/question/11536910
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