Hi,
Let assume a the width and b the length of the rectangular area.
Ali's solution is incorrect.
Ali had to add both the terms and should get 10y answer, and not multiply both terms and get answer 9y^2 which is wrong.
Step-by-step explanation:
Ali simplifies the expression 9y+y to 9y2. We need to identify if Ali's solution is correct or incorrect.
Ali's solution is incorrect.
Reason:
We are given the expression: 9y+y
When we add two like terms ( terms having the same variable and exponent), we add the coefficients of both like terms.
In our case 9y+y = 10y
Whereas Ali has done multiplication of both terms and not addition.
In multiplication we add the exponents of the same variables i.e 9y+y = 9y^2
So, Ali had to add both the terms and should get 10y answer, and not multiply both terms and get answer 9y^2 which is wrong.
Keywords: Solving expressions
Learn more about Solving expressions at:
#learnwithBrainly
Answer:
1) up
2) correct
3) left
4) down
Step-by-step explanation:
do you not have a graphing calculator, it really helps you with these.
Answer:
The polynomial <u>has a degree of 3</u> because the leading term is -8x³.
Step-by-step explanation:
<h2>Definitions:</h2>
- A <u>term</u> is the product of a number and one or more variables raised to an exponent.
- The <u>degree of a term</u> pertains to the exponent of a variable in a term.
- The <u>degree of a polynomial</u> is the highest exponent in a polynomial. Regardless of the value or sign of its coefficient, what matters is the the <u>exponent</u> of the variable.
- The term that has the greatest exponent in a polynomial is referred to as the <u>leading term</u>; the coefficient in a leading term is known as the <u>leading coefficient</u>.
<h2>Explanation:</h2>
Given the following polynomial: 3⁴- 8x³+ 6x²- 3x:
If we rearrange this in descending degree, it will be easier to understand why the given polynomial has a degree of 3:
3⁴- 8x³+ 6x²- 3x ⇒ - 8x³+ 6x²- 3x + 3⁴
"3⁴" is not a term. It is referred to as a constant. 3⁴ = 3 × 3 × 3 × 3 = 81.
We can substute 3⁴ = 81 into the polynomial:
- 8x³+ 6x²- 3x + 81
As we can see, the term with the highest degree is -8x³. Therefore, the polynomial <u>has a degree of 3</u>.
7 to the power of 3 is the same as 7x7x7. To start off 7x7 = 49. Then 7x49 = 343. I hope this helped :)