All categories

3 years ago

The x3 was supposed to be an exponent not 3x

Mathematics

1 answer:

mote1985 [20]3 years ago

8 0

Answer:

The value of x is $2\sqrt[3]{2}$

Step-by-step explanation:

We are given $2+x^3=18$

We need to solve for x

First we subtract 2 both sides

$x^3=18-2=16$

Taking cube roots both sides to isolate x

$x=\sqrt[3]{16}$

Simplify the radical

$x=2\sqrt[3]{2}$

Thus, The value of x is $2\sqrt[3]{2}$

You might be interested in

Pls help will give Brainiest

Ronch [10]

Answer:

-5

Step-by-step explanation:

8 0

2 years ago

Eric wants to double protect his flower bed with a regular hexagonal shaped fence surrounded by a rectangular fence. How many fe

kati45 [8]

Answer:

78 feet

Step-by-step explanation:

<em>COmplete Question is in attached image.</em>

<em />

Eric will want to buy fencing that is sum of perimeter of the square border outside and hexagon inside.

Perimeter is the sum of all sides.

Perimeter of hexagon is sum of 6 sides.

Each side is 5, so

Perimeter of Hexagon = 5 + 5 + 5 + 5 +5 +5 = 30

Now,

Perimeter of Square is sum of all 4 sides measuring 12 each, so

Perimeter of Square = 12 + 12 + 12 + 12 = 48

Total amount of fencing needed = 30 + 48 = 78

4 0

3 years ago

Can someone help me solve this question please?

Snowcat [4.5K]

To find the population after a year, you can multiply 4.5x10⁸ by 1.05, as it increases by 5% per year (1.05=1+5%). To find the population after five years, you have to multiply 4.5x10⁸ by 1.05 five times.

4.5x10⁸(1.05)⁵

=574326703.125

Since you can't have a decimal amount of people, you round this number to 574326703.

Therefore, the population after five years is going to be about 574326703.

7 0

2 years ago

Help pls!! Whoever answers gets marked brainliest

Tamiku [17]

Answer:

10. x= 10 y=sqrt 200

11. x=y=450

12. x=19 y=sqrt 1083

13. x=sqrt 48 y=sqrt 12

Step-by-step explanation:

10.

x and 10 are the same

10^2+10^2=200

sqrt 200 is not a whole number so y is just sqrt 200

11.

30^2=2x^2 because x and y are the same

x^2=450

sqrt 450 is not a whole number so x and y are just sqrt 450

12.

x= 38 divided by 2=19

38^2=19^2+y^2

1444=361+y^2

y^2=1083

sqrt 1083 is not a whole number so y is just sqrt 1083

13.

x^2=(x/2)^2+36=x^2/4+36

x^2=48

sqrt 48 is not a whole number so x is just sqrt 48

y is half of x so it is sqrt 12

7 0

3 years ago

If x= 6 is the only x-intercept of the graph of a quadratic equation, which statement best describes the discriminant of the

maw [93]

Answer:

The discriminant is 0.

Step-by-step explanation:

we know that

In a quadratic equation of the form $ax^{2} +bx+c=0$

The discriminant is equal to

$D=(b^{2}-4ac)$

If D=0 -----> The equation has only one real solution

If D>0 ----> The equation has two real solutions

If D<0 ----> The equation has complex solutions

In this problem

If the equation has only one intercept (x=6)

then

The equation has only one real solution

therefore

The discriminant is 0.

8 0

3 years ago