All categories

2 years ago

Simplify: (-3x^3+2x^2+4x)-(8x^4-5x^3+6x^2-2x

Mathematics

1 answer:

sergejj [24]2 years ago

3 0

Answer:

−8^4+2^3−4^2+6

Step-by-step explanation:

Distribute the - to 8x^4-5x^3+6x^2-2x:

-8x^4+5x^3-6x^2+2x

Now simplify:

-3x^3+2x^2+4x-8x^4+5x^3-6x^2+2x= −8^4+2^3−4^2+6

Hope this helps!

You might be interested in

Given g(x)=-4(x+4)^2 - 8 what transformations were done compared to the parent function f(x)=x^2 ?

guajiro [1.7K]

A reflection over the x-axis,horizontal shift of 4 in the left direction and a downward shift of 8

3 0

3 years ago

Been trying to get this one answered for months, will make the first one to answer a brainliest :D Please explain how you did it

Nikitich [7]

Answer:

$\frac{2}{7}$

Step-by-step explanation:

In order to find the slope of a line you must find where the points intersect, use the formula for slope, substitute values, and simplify if needed.

In this case we were already given the points for slope:

$P1=(-4,-4) = (x1,y1)$

$P2=(-2,3)=(x2,y2)$

Slope formula:

$slope = \frac{y2-y1}{x2-x1}$

Now substitute:

$\frac{-2--4}{3--4}$

Solve using KCC: (Keep, Change, Change)

$-2+4=2$

$3+4=7$

= $\frac{2}{7}$

Because the slope isn't a negative you do not need to simplify the answer.

Hope this helps.

8 0

3 years ago

zlopas [31]

Answer:

Step-by-step explanation:

ΔABC & ΔADE are similar triangles

$\frac{AD}{AB}=\frac{DE}{BC}\\\\\frac{12}{4}=\frac{12}{x}\\$

Cross multiply,

12*x = 12*4

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

x = 1 * 4

x = 4

8 0

3 years ago

AAAAAAA HELP ME PLZZZZ

Galina-37 [17]

Answer:

12 i believe

Step-by-step explanation:

volume; LxWxH

3x2x2

3x2=6

6x2=12

sorry if this is wrong lol but this is what i believe it is

6 0

2 years ago

An electric company charges a certain rate per kilowatt-hour (kWh) of electricity used and an administrative fee of $3.50. The c

Triss [41]

Answer:

Variable $r$ represents the slope of the equation.

Step-by-step explanation:

Given that the administrative fees that company charge is $3.50.

Also, the Zhao has a bill of $63.25.

The equation used by Zhao is

$63.25=r(800)+3.50$

We can compare the equation of a line in the slope-intercept form.

$y=mx+c$

We can see the y-intercept is $3.50 that is a fixed cost. And the company charged $63.25 that is the dependent variable.

Also, variable $r$ that is the rate per kilowatt-hour (kWh) represents the slope of the equation.

4 0

3 years ago