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FromTheMoon [43]

3 years ago

5

How to simplify -64^(1/3)

2 answers:

Nadusha1986 [10]3 years ago

6 0

$-64^{\frac{1}{3}}=\sqrt[3]{-64}= \sqrt[3]{(-4)^3} =-4$

fredd [130]3 years ago

6 0

You need to find a number that you can multiply by itself 3 times and wind up with -64 .

Like [ N x N x N = -64 ] .

Try some small numbers:

1 x 1 x 1 = 1
2 x 2 x 2 = 8
3 x 3 x 3 = 27
4 x 4 x 4 = 64 . . . There it is ... almost ! The right number, but the wrong sign.

Now try (-4).

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A rectangular swimming pool is twice as long as it is wide. A small concrete sidewalk surrounds the pool and is a constant 2 fee

Naddika [18.5K]

Answer:

The dimensions of the pool are:

Width: 8.944 feet

Length: 17.888 feet

Step-by-step explanation:

From Geometry, the area of a rectangle ( $A$ ), measured in square feet, is determined by the following equations:

$A = w\cdot l$ (1)

Where:

$w$ - Width, measured in feet.

$l$ - Length, measured in feet.

If we know that $w = x$ , $l = 2\cdot x$ and $A = 160\,ft^{2}$ , then we get the following second order polynomial:

$2\cdot x^{2}-160 = 0$ (1)

And we solve the expression for $x$ :

$2\cdot x^{2} = 160$

$x^{2} = 80$

$x = \sqrt{80}\,ft$

$x \approx 8.944\,ft$

Then, the dimensions of the pool are, respectively:

$w \approx 8.944\,ft$ and $l \approx 17.888\,ft$

5 0

2 years ago

PLEASE HELPPP!! A box contains only black and white chips There are 8 black chips and 6 white chips How many white chips must be

Law Incorporation [45]

Lets take away 2 white chips...

8 black and 4 white...total of 12 chips
P(black) = 8/12 = 2/3

remove 2 white chips <==

3 0

3 years ago

F(x)= x squared -3x + 2 divided by 3x squared + 9 x -12

VashaNatasha [74]

Answer:

=(x-2)/3(x+4)

Step-by-step explanation:

F(x)=x²-3x+2/3x²+9x-12

Using mid term break formula

=x²-2x-x+2/3(x²+3x-4)

=x(x-2)-1(x-2)/3(x²+4x-x-4)

=(x-2)(x-1)/3{x(x+4)-1(x+4)}

=(x-2)(x-1)/3(x-1)(x+4)

Cancelling (x-1)

We get

=(x-2)/3(x+4)

Hope it helps :)

6 0

3 years ago

Length = 2 feet, width = 15 inches, height = 8 inches<br><br><br><br> V= _____________

I am Lyosha [343]

Volume = length * width ( aka base ) * height

2 feet = 24 inches.

24*15*8=2880 inches.

6 0

2 years ago

Read 2 more answers

Graph points (- 4, - 1)(4, 3) . Write the equation of the line that passes through the points in slope-intercept form

Reika [66]

Answer:

y = 0.5x + 1

Step-by-step explanation:

4 up, 8 right

rise over run

slope = 4/8 or 1/2

y-int = 1

6 0

3 years ago