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3 years ago

Which expression is NOT equivalent to the other three?

Mathematics

1 answer:

Olin [163]3 years ago

6 0

Answer:

9(n - 9) = 9n - 81

Step-by-step explanation:

Equivalent expressions are expressions which are equal . To determine if expressions are equivalent, simplify to lowest terms through combining like terms.

-9 - 7n + 16n = -9 + 9n

9(n - 9) = 9n - 81

n - 9 + 8n = -9 + 9n

9n - 9 = -9 + 9n

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Given that

kumpel [21]

Answer:

-8

Step-by-step explanation:

Pluck in the values:

P = 3 + (-11)

P = 3 - 11 = -8

7 0

3 years ago

The roots of 2x^{2} + 3x = 4 are α and β. Find the simplest quadratic equation which has roots <img src="https://tex.z-dn.net/?f

elena-s [515]

$2x^2+3x=4\implies2x^2+3x-4=0\implies x=\dfrac{-3\pm\sqrt{41}}4$

Let $\alpha$ be the root with the positive square root and $\beta$ the root with the negative square root. Then

$\dfrac1\alpha=\dfrac4{-3+\sqrt{41}}\quad\text{and}\quad\dfrac1\beta=\dfrac4{-3-\sqrt{41}}$

The simplest quadratic with these roots can be written as

$\left(x-\dfrac1\alpha\right)\left(x-\dfrac1\beta\right)=x^2-\left(\dfrac1\alpha+\dfrac1\beta\right)x+\dfrac1{\alpha\beta}=x^2-\dfrac34x-\dfrac12$

4 0

3 years ago

How to simplify this so it equal to c

alukav5142 [94]

Combine terms using exponent rules:
$a^m *a^n = a^{m+n} \\ \\ \frac{a^m}{a^n} = a^{m-n}$

First rewrite everything so that you have 2^m terms and x^m terms

$\frac{2^4 x^4 x^{3/2}}{2^{5/2} x^{5/2}} \\ \\ = 2^{4 - (5/2)} * x^{4 + (3/2)-(5/2)} \\ \\ =2^{(3/2)} x^{(6/2)} \\ \\ = 2 \sqrt{2} x^3$

3 0

4 years ago

Please help with this<br>

tankabanditka [31]

Answer:

x=3

Step-by-step explanation:

y= -2

4x-3y=18

4x-3(-2)=18

4x-(-6)=18

4x+6=18

4x+6-6=18-6

4x=12

$\frac{4x}{4} = \frac{12}{4}$

x=3

If its helpful ❤❤❤

THANK YOU

6 0

3 years ago

Are all triangles prisms or pyramids

Umnica [9.8K]

Answer:

No not all of them.

Step-by-step explanation:

Triangles can be 2d meaning like a flat triangle.

8 0

3 years ago