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3 years ago

What does cubed mean

Mathematics

1 answer:

allochka39001 [22]3 years ago

3 0

Answer:

A cube number is a number multiplied by itself 3 times.

Step-by-step explanation:

A cubed number looks like this: $x^{3}$

The x is whatever number is being cubed.

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Y = f(x) = -1^x<br> find f(x) when x=3

Anna [14]

Hello :
<span>f(x) = (-1)^x
if x=3
f(3) = (-1)^3 = -1</span>

4 0

3 years ago

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Find the equation of the line passing through the point (–1, –2) and perpendicular to the line y = –1∕2x + 5. Question options:

tankabanditka [31]

Answer:

<h3>The answer is option C</h3>

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

From the question

y = - 1/2x + 5

Comparing with the general equation above

Slope / m = -1/2

Since the lines are perpendicular to each other the slope of the other line is the negative inverse of the original line

That's

Slope of the perpendicular line = 2

Equation of the line using point (–1, –2) and slope 2 is

y + 2 = 2( x + 1)

y + 2 = 2x + 2

y = 2x + 2 - 2

We have the final answer as

Hope this helps you

4 0

3 years ago

The length of a rectangle is 7 more than the width the area is 744 square centimeters find length and width of rectangle

andrezito [222]

Answer:

$l=31\ cm\\\\w=24\ cm$

Step-by-step explanation:

The formula that is used to calculate the area of a rectangle is:

$A=lw$

Where "l" is the lenght and "w" is the width.

You know that the area of that rectangle is:

$A=744\ cm^2$

And, according to the exercise, its lenght is 7 more than its width; then:

$l=w+7$

Then, you can make the corresponding substitution into the formula $A=lw$ :

$744=(w+7)w$

Simplify:

$744=w^2+7w\\\\w^2+7w-744=0$

Factor the equation. Find two numbers whose sum is 7 and whose product is -744. These are 31 and -24.

Then, you get:

$(w-24)(w+31)=0\\\\w_1=24\\\\w_2=-31$

The width of the rectangle is the positive value:

$w=24\ cm$

Then, the lenght is:

$l=24+7\\\\l=31\ cm$

8 0

3 years ago

Piłeczka pingpongowa wazy p gramów piłeczka do tenisa t gramów a piłka do siatkówki s dekagramow

Lemur [1.5K]

It is B i know for sure!

3 0

3 years ago

Determine whether each point appears on the line with the given slope and y−intercept. Select Yes or No for each point.

-Dominant- [34]

Could you put a graph plz??

6 0

3 years ago

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