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3 years ago

I’m circle v, r=14ft

Mathematics

1 answer:

Savatey [412]3 years ago

6 0

A = pi(r)^2
a= pi (14)^2
a=196pi

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Quadratic equations and complex numbers PLEASE HELPPPP ASAP

kondor19780726 [428]

we are given

$27x^3-1=0$

we can also write it as

$(3x)^3-(1)^3=0$

now, we can use factor formula

$a^3-b^3=(a-b)(a^2+ab+b^2)$

we can use above formula

we get

$(3x)^3-(1)^3=(3x-1)((3x)^2+3x\times 1+(1)^2)$

now, we can simplify it

$27x^3-1=(3x-1)(9x^2+3x+1)$

now, we can set it to 0

$27x^3-1=(3x-1)(9x^2+3x+1)=0$

and then we can solve for x

$(3x-1)(9x^2+3x+1)=0$

$3x-1=0$

$x=\frac{1}{3}$

$9x^2+3x+1=0$

now, we can use quadratic formula

$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

now, we can plug values

and we get

$x=\frac{-3\pm \sqrt{3^2-4\cdot \:9\cdot \:1}}{2\cdot \:9}$

$x=-\frac{1}{6}+i\frac{\sqrt{3}}{6},\:x=-\frac{1}{6}-i\frac{\sqrt{3}}{6}$

So, we will get solution as

$x=\frac{1}{3},\:x=-\frac{1}{6}+i\frac{\sqrt{3}}{6},\:x=-\frac{1}{6}-i\frac{\sqrt{3}}{6}$ ...............Answer

5 0

3 years ago

What is -5(3-2g) equal

klio [65]

Answer:

Simplified the expression

− 15 + 10 g

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Combine like terms:<br> y + 6 + 2(y + 8)

aliya0001 [1]

Answer:

3y +22

Step-by-step explanation:

y + 6 + 2(y + 8)

Distribute the 2

y+6+2y+16

Combine like terms

3y +22

4 0

3 years ago

F(x)=x^2+4x-3 g(x)=x^2-5 find 4[f(x)-g(x)]

lawyer [7]

First f(x)-g(x) = x²+4x-3 -x²+5
= 4x+2
so 4[f(x)-g(x)] = 4[4x+2] = 16x+8

3 0

2 years ago

Which of the following is the graph of x < 1?

Arturiano [62]

A.

B, C, E and F are automatically ruled out. The number under a square root sign can never be negative.

D is incorrect because 0 is included. When x = 0, the square root of 0 is 0. And of course 0 is less than one.

So A is correct. Any number between 0 and 1 is less than or equal to 1, and not negative (which is impossible)

7 0

3 years ago