All categories

4 years ago

If the radius is 9 what is the area

Mathematics

1 answer:

valkas [14]4 years ago

8 0

Pi* r^2= A
pi* 9^2=A
pi*81=A
254.469=A

You might be interested in

Any recurring sequence of points above and below the trend line lasting less than one year can be attributed to the cyclical com

kolezko [41]

True because I took this text before

5 0

3 years ago

Find the vertex and axis of symmetry for f(x)=2x^2-1

vfiekz [6]

<h3>Axis of symmetry is 0 and vertex is (0, -1)</h3>

Solution:

Given is:

$f(x) = 2x^2 - 1$

We have to find the vertex and axis of symmetry

The general equation is given as:

$f(x) = ax^2 + bx + c$

Comparing with given equation,

a = 2

b = 0

c = -1

The axis of symmetry is given as:

$x = \frac{-b}{2a}$

$x = \frac{0}{2(2)}\\\\x = 0$

Thus axis of symmetry is 0

The x coordinate of the vertex is the same

x coordinate of the vertex = 0

h = 0

The y coordinate of the vertex is:

k = f(h)

k = f(0)

$f(0) = 2(0) - 1\\\\f(0) = 0 - 1\\\\f(0) = -1$

Thus, y coordinate of the vertex is -1

Therefore, vertex is (0, -1)

3 0

3 years ago

The admission fee at an amusement park is $1.50 for children and $5.00 for adults. On a certain day, 344 people entered the park

marin [14]

Jk jk jk jk jk jk jk jk jk jk jk jk jk jk jk jk jk jk

7 0

3 years ago

Help that one side is 2x-2

bogdanovich [222]

Answer: x = 2/3

Step-by-step explanation:

Add all sides.

2x-2 + 2x - 2 + x + x =

6x - 4

Put " = 0 "

6x-4 = 0

Add 4 to both sides.

6x-4 = 0

+4 = +4

-------------------

6x=4

You get 6x = 4 because the 4 on the left side of the equals sign cancelled out!

NOW DIVIDE 6 FROM BOTH SIDES

6x = 4

/6 /6

-----------

x= 4/6

SIMPLIFY / REDUCE FRACTION

4/6 divided by 2 = 2/3

2/3 is the answer !

5 0

4 years ago

Please explain how to help me learn please

devlian [24]

Https://us-static.z-dn.net/files/d5b/b845384fc1268b12d8e26abf6f82a538.jpeg

5 0

4 years ago