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4 years ago

What is the solution to the equation 1/2 x+3=2/3x+1?

Mathematics

2 answers:

PSYCHO15rus [73]4 years ago

6 0

The answer is x=12 after I did the math that is my answer

Marta_Voda [28]4 years ago

3 0

Answer:

x=12 is correct

Step-by-step explanation:

i just did it on my test

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Solve the following system of equations. Show all work and solutions.

Alekssandra [29.7K]

Answer: (0, 1), (-1, -3)

Given two equation's:

y = 2x² + 6x + 1
y = −4x² + 1

Solve them simultaneously:

$\sf 2x^2 + 6x + 1 = -4x^2 + 1$

$\sf 2x^2 + 4x^2 = 1 - 1$

$\sf 6x^2 + 6x = 0$

$\sf 6x(x + 1) = 0$

$\sf 6x = 0, \ x + 1 = 0$

$\sf x = 0, \ x = -1$

(a) When x = 0, y = −4(0)² + 1 = 1

(b) When x = -1, y = -4(-1)² + 1 = -3

Solution: (x, y) → (0, 1), (-1, -3)

3 0

2 years ago

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What is the equation of the line that passes through the point (7,-3)

il63 [147K]

Answer:

x = 7

Step-by-step explanation:

A line with an undefined slope is a vertical line so it has to be in the form x = ?

Since it passes through x = 7 when y = -3, then the equation is x = 7

6 0

3 years ago

Find the derivative. y = 5/ (2root4(x^3))

DedPeter [7]

$\bf y=\cfrac{5}{2\sqrt[4]{x^3}}\implies y=\cfrac{5}{2}\cdot x^{-\frac{3}{4}}\\\\
-----------------------------\\\\
\cfrac{dy}{dx}=\cfrac{5}{2}\left( -\cfrac{3}{4}x^{-\frac{3}{4}-1} \right)\implies 
\cfrac{dy}{dx}=\cfrac{5}{2}\left( -\cfrac{3}{4}x^{-\frac{7}{4}} \right)
\\\\\\
 
\cfrac{dy}{dx}=-\cfrac{15}{8}\cdot x^{-\frac{7}{4}} 
\implies 
\cfrac{dy}{dx}=-\cfrac{15}{8}\cdot \cfrac{1}{x^{\frac{7}{4}} }
\\\\\\
$

$\bf
\cfrac{dy}{dx}=-\cfrac{15}{8x^{\frac{7}{4}}}\implies 
\cfrac{dy}{dx}=-\cfrac{15}{8\sqrt[4]{x^7}}\\\\\\ \cfrac{dy}{dx}=-\cfrac{15}{8x\sqrt[4]{x^3}}
$

3 0

3 years ago

25 points! :) Pretty simple question, just not sure how to do it.

Softa [21]

ANSWER

-3 -2, 0, .5, 1, 100 for domain

0, 1.8, 10, 19, 77, 100 For Range

Step-by-step explanation:

Domain is all the x values from least to greatest, and range is all the y vlues from least to greatet

3 0

3 years ago

Factorize fully the following a) 2x + 10

yan [13]

2x + 2 * 5

answer: 2(x+5)

5 0

4 years ago

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