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3 years ago

24 = 2х2 +6x +Ч Please answer??

Mathematics

1 answer:

marysya [2.9K]3 years ago

3 0

Answer:2 2/3

Step-by-step explanation:

Multiply the 2x2 to get 4. Then add the two fours together to get 8. You must get the x value alone on one side so subtract the 8 from both sides of the equal sign. You will then have 16=6x. Now divide by 6 to single out the x which gives you 16/6 or 2 2/3

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What is the equation in slope-intercept form of the line that passes through the points (−26, −11) and (39, 34)?

Scrat [10]

The equation in slope-intercept form of the line passing through the given points is: C. $y = \frac{9}{13}x + 7$

<u>Given the following points:</u>

Points on the x-axis = (-26, 39)

Points on the y-axis = (-11, 34)

To find the equation in slope-intercept form of the line passing through the given points:

Mathematically, the equation of slope is calculated by using this:

$Slope. \;m = \frac{Change \; in \; y \;axis}{Change \; in \; x \;axis} \\\\Slope. \;m = \frac{y_2 - y_1}{x_2 - x_1}$

Substituting the given points, we have:

$Slope. \;m = \frac{34 - [-11]}{39 - (-26)}\\\\Slope. \;m = \frac{34\; + \;11}{39 \;+ \; 26}\\\\Slope. \;m = \frac{45}{65}\\\\Slope. \;m = \frac{9}{13}$

The standard form of an equation of line is given by the formula;

$y = mx + b$

Where:

x and y are the points.

m is the slope.

b is the intercept.

We would find the intercept:

$-11 = \frac{9}{13}(-26) + b\\\\ -11 = -18 + b\\\\b = -11 + 18$

Intercept, b = 7

The equation in slope-intercept form of the line is:

$y = \frac{9}{13}x + 7$

3 0

3 years ago

Could someone explain this to me?

Ilya [14]

This is a simple differentiation problem. Let's start by taking the derivative of both sides (with respect to x):
$5y^4\frac{dy}{dx}+6y^2x+6x^2y\frac{dy}{dx}+20x^3 = 0$

Simplify:
$\frac{dy}{dx} (5y^4+6x^2y) + 6y^2x+20x^3 = 0$

Solve for dy/dx:
$\frac{dy}{dx} = \frac{-6y^2x-20x^3}{5y^4+6x^2y}$

Now, plug in the given points:
$\frac{dy}{dx} = \frac{-6(2)^2(-1)-20(-1)^3}{5(2)^4+6(-1)^2(2)} = \frac{24+20}{80+12}$

Further simplification gives:
$\frac{dy}{dx}|_{(2,-1)} =\frac{44}{92} = \frac{11}{23}$

So, your answer is 11/23 or B.

7 0

4 years ago

Jessie says to round 763 400 to the nearest ten thousand he will round to 770 000 is he right ?

skad [1K]

No because it's closer to 760,000

4 0

3 years ago

Read 2 more answers

Solve for the value of N

Nataly_w [17]

Answer:n=9

Step-by-step explanation: