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3 years ago

A circular rug has a radius of 4.5 feet.What is the circumstance of the rug ? use 3.14

Mathematics

1 answer:

devlian [24]3 years ago

3 0

circumference = 2*pi * r

=2* 3.14 * 4.5

=3.14 * 9

= 28.26 ft

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What is the solution of 2x^2+8=x^2-16

AfilCa [17]

Answer:

x = -12

Step-by-step explanation:

2x^2 + 8 = x^2 - 16

2x + 2x + 8 = x + x - 16

4x + 8 = 2x - 16

-2x -2x

2x + 8 = -16

-8 -8

2x = -24

---- ------

2 2

x = -12

8 0

3 years ago

Solve 3x2 = −12x − 15. x = −4 ± 2i x = −4 ± i x = −2 ± 2i x = −2 ± i

diamong [38]

ANSWER

$x = - 2 \pm i$

EXPLANATION

We use the method of completing the squares.

The equation is
$3 {x}^{2} = - 12x - 15$

We rewrite the above equation to obtain;

$3 {x}^{2} + 12x = - 15$

We divide through by 3 to obtain;

${x}^{2} + 4x = - 5$

We add half the coefficient of
$x$

to both sides of the equation to get,

${x}^{2} + 4x + {2}^{2} = - 5 + {2}^{2}$

The right hand side is now a perfect square.

${(x + 2)}^{2} = - 1$

We now take square root of both sides to get;

$x + 2 = \pm \sqrt{ - 1}$

We add -2 to both sides,

$x = - 2 \pm \sqrt{ - 1}$

We simplify to obtain,

$x = - 2 \pm i$

3 0

3 years ago

Simplify the equation 32^3/5

scoundrel [369]

Ok so to simplify 32^3/5, you will need to know the steps, so I'll tell u the step by step solution. ;D

So Step 1: You have to Raise 32 to the 3rd power:

1.1 32 = 2⁵
(32)³ = (2⁵)³ = 2¹⁵

the equation has ended on step 1, so now is:

 2¹⁵
------
 5

Now step 2:
Simplify it

(you can't simplify this equation but these is the steps you gotta do on other equations so I'm just giving an example.)

 2¹⁵
------
 5

So basically your final result is:

 2¹⁵
------
 5

=====End=====

Hope you understand it :D

-Skylor/Crystal

6 0

3 years ago

Funcions f(x) and g(x) are defined below.

DochEvi [55]

The answer is A Becuase you only tell the x axis and there is only 2 points on the x axis

3 0

3 years ago

Read 2 more answers

a globe has a diameter of 12 inches. it fits inside a cube-shaped box that has a side length of 12 inches. What is the volume, r

baherus [9]

Answer:

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