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3 years ago

If 2x +4=b, then 6x + 12=

Mathematics

2 answers:

schepotkina [342]3 years ago

7 0

Answer:

Step-by-step explanation:

2x + 4 = b

3(2x+4) = 3b

6x + 12 = 3b

forsale [732]3 years ago

6 0

Answer:

Step-by-step explanation:

(2x+4)*3=b*3

6x+12=3b

That is what i learned from school, hopes this helps

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Fin the values of x and y, help me

astraxan [27]

Answer:

x = 25 , y = 19

Step-by-step explanation:

Since the triangle has 3 congruent sides then it is equilateral

The 3 angles are also congruent, with each angle = 60° , then

2x + 10 = 60 ( subtract 10 from both sides )

2x = 50 ( divide both sides by 2 )

x = 25

and

3y + 3 = 60 ( subtract 3 from both sides )

3y = 57 ( divide both sides by 3 )

y = 19

3 0

3 years ago

Consider the differential equation 2y'' + ty' − 2y = 14, y(0) = y'(0) = 0. In some instances, the Laplace transform can be used

andreyandreev [35.5K]

Answer:

Whoaaaa a picture would explain more than jus words

Step-by-step explanation:

8 0

3 years ago

Which of the following is a mathematical statement showing that one ratio is equal to another ratio?

yulyashka [42]

A proportion is a statement that two ratios are equal

5 0

3 years ago

40 points, please help with all of them

Kitty [74]

Answer:

$\large\boxed{Q1.\ \text{2 times greater}}\\\\\boxed{Q2.\ J. 3}\\\\\boxed{Q3.\ B. -\dfrac{4}{5}}$

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

Q1.

We have the equation of a line <em>p </em>in the standard form

$4x-3y=7$

Convert to the slope-intercept form:

$4x-3y=7$ <em>subtract 3x from both sides</em>

$-3y=-4x+7$ <em>divide both sides by (-3)</em>

$y=\dfrac{4}{3}x-\dfrac{7}{3}$

The slope $m_1=\dfrac{4}{3}$

From the table we have the points (4, 3) and (7, 5). Calculate the slope of line <em>q</em>:

$m_2=\dfrac{5-3}{7-4}=\dfrac{2}{3}$

Divide the slope of <em>p</em> by the slope of <em>q</em>:

$\dfrac{4}{3}:\dfrac{2}{3}=\dfrac{4}{3}\cdot\dfrac{3}{2}=2$

Q2.

Parallel line have the same slope. Therefore, if we have the equation of the line in the slope-intercept form, then we have the slope:

$y=3x+2\to m=3$

Q3.

Parallel line have the same slope.

Calculate the slope from given points (-11, 5) and (-6, 1):

$y=\dfrac{1-5}{-6-(-11)}=\dfrac{-4}{-6+11}=\dfrac{-4}{5}=-\dfrac{4}{5}$

6 0

3 years ago

GIVING BRAINIEST IF CORRECT!!<br><br> Factor x^4 - 16 completely

ioda

Answer:

$(x^2 + 4)(x + 2)(x - 2)$

Step-by-step explanation:

Hello!

We can use the difference of square method.

<h2>Difference Of Squares (DOS)</h2>

The formula for the DOS is $(a + b)(a - b) = a^2 - b^2$

It is a simple way to factor polynomials.

The criteria:

Has to begin and end with a perfect square
The operation has to be subtraction

<h3>Factor:</h3>

$x^4 - 16$

Begins with a perfect square (x² * x²) and ends with a perfect square (4 * 4)

$(x^2 + 4)(x^2 - 4)$

Warning! Watch out, there may be another DOS!

$x^2 - 4$ is another DOS

$(x^2 + 4)(x + 2)(x - 2)$

The x² + 4 is not a DOS because the operation is addition.

The final factored form is $(x^2 + 4)(x + 2)(x - 2)$

8 0

2 years ago