What is the correct reason for statement 3?Prove: (2y) ∙ 4 + y = 9y

Statements Reasons
1. (2y) ∙ 4 + y 1. Given
2. 4 ∙ (2y) + y 2. Commutative Property
3. (4 ∙ 2) ∙ y + y 3.
4. 8y + y 4. Commutative Property
5. 9y 5. Addition

Multiplication

Distributive Property

Addition

Associative Property

.

1 points

Question 3

Answers

Answer 1

Answer: The answer would be Associative Property.

Hope this helps you =)

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If (x + 2 ) is a factor of x3 − 6x2 + kx + 10, k =

Answers

If a binomial x-a is a factor of a polynomial p(x), then p(a)=0.

x+2 is a factor of p(x)=x³-6x²+kx+10, so p(-2)=0.

$p(-2)=0 \n(-2)^3 - 6 * (-2)^2 + k * (-2) + 10=0 \n-8-6 * 4-2k+10=0 \n-8-24-2k+10=0 \n-2k-22=0 \n-2k=22 \nk=(22)/(-2) \n\boxed{k=-11}$

Answer:

-11

Step-by-step explanation:

Find value of x and y

2.) 4x+13y=40
4x+3y=-40

Answers

$\left\{\begin{array}{ccc}4x+13y=40\n4x+3y=-40&/\cdot(-1)\end{array}\right\n+\left\{\begin{array}{ccc}4x+13y=40\n-4x-3y=40\end{array}\right\n-----------\n.\ \ \ \ \ \ 10y=80\ \ \ \ /:10\n.\ \ \ \ \ \ y=8\n\n4x+3\cdot8=-40\n4x+24=-40\n4x=-40-24\n4x=-64\ \ \ \ /:4\nx=-16\n\nSolution:x=-16\ and\ y=8.$

4x + 13y = 40
4x + 3y = -40
using elimination method
10y = 80
y = 8
substitute y in eq1
4x + 13(8) = 40
4x + 104 = 40
4x = 40 - 104
4x = - 64
x = -16

6x − 9 x − 5 value x

Answers

Let's simplify step-by-step.6x−9x−5=6x+−9x+−5Combine Like Terms:=6x+−9x+−5=(6x+−9x)+(−5)=−3x+−5Answer:=−3x−5

Would you classify 240 as a perfect square, perfect cube, both, or neither?

Answers

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Answers

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