All categories

4 years ago

-x(x2 - 4) how to solve it

Mathematics

1 answer:

ololo11 [35]4 years ago

5 0

apply the distributive law

-xx * 2 - (-x) * 4

apply minus-plus rules 

2xx + 4x

apply exponent rule

-2x² + 4x

i hope this helps :)

You might be interested in

Are the graphs of 4x-6y=-24 and y=2/3x+4 parallel perpendicular or neither?

ANTONII [103]

Answer:

neither

Step-by-step explanation:

4x - 6y = -24 y = 2/3x + 4

-6y = -4x - 24

-6/-6y = -4/-6x -24/-6 y =2/3x + 4

y = 2/3x +4

Same line

5 0

3 years ago

How long will it take you and 4 friends to paint the fence?

Ivahew [28]

Answer:

Check pdf

Step-by-step explanation:

Download pdf

6 0

3 years ago

Please help i don't know what I'm doing!!! :( multiply and simplify cot x( sin x - sec x)

fgiga [73]

Answer:

cos(x) -csc(x)

Step-by-step explanation:

It is helpful to know the relations between the trig functions:

$\cot{x}=\dfrac{\cos{x}}{\sin{x}}\\\\\sec{x}=\dfrac{1}{\cos{x}}\\\\\csc{x}=\dfrac{1}{\sin{x}}$

Then the given expression can be simplified as follows:

$\cot{x}(\sin{x}-\sec{x})=\dfrac{\cos{x}}{\sin{x}}\left(\sin{x}-\dfrac{1}{\cos{x}}\right)=\cos{x}-\dfrac{1}{\sin{x}}\\\\=\boxed{\cos{x}-\csc{x}}$

6 0

3 years ago

Charlotte is running at a rate of 9 km/h what is charlottes speed in m/s

Harrizon [31]

Answer: The conversion factor between km and m is 1 km = 1000 m, and between hr and seconds, it is 1 hr = 3600 s. Let's first convert 9 km/hr to m/hr.

9 km/hr x (1000 m / 1 km) = 9000 m/hr

Then use the 2nd conversion factor to convert hr to seconds.

9000 m/hr x (1 hr / 3600 s) = 9000 / 3600 m/s = 5/2 m/s

Step-by-step explanation:

3 0

3 years ago

5. Find the volume, of a cone with a radius of 3 yards and a height of 11 yards.

Zigmanuir [339]

ANSWER: Solve for volume

V≈79.26m³

4 0

2 years ago