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OverLord2011 [107]
3 years ago
9

Find the area of a circle with a radius of 3.

Mathematics
1 answer:
TiliK225 [7]3 years ago
5 0

Answer:

A =28.26

Step-by-step explanation:

Using the area formula

A = pi r^2

We use pi = 3.14 and the radius is 3

A = 3.14 * (3)^2

A = 3.14 *9

A =28.26

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Find a quadratic function that includes the set of values below.<br> (0,9). (2,15) (3,12)
nlexa [21]

Answer:

f(x) = -2x^2 + 7x + 9

Step-by-step explanation:

f(x) = ax^2 + bx + c\\f(0) = 9 => c = 9;\\f(2) = 15 = 4a + 2b + 9  2a + b  = 3\\f(3) = 9a + 3b + 9 = 12  3a + b = 1\\Subtract the second equation from the first:\\-a = 2 => a = -2; b = 7; c = 9\\f(x) = -2x^2 + 7x + 9

3 0
3 years ago
What does the x=?...
ra1l [238]

Answer:

75 ft

Step-by-step explanation:

Let 20/50 = 30/x

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#HopeItHelps

7 0
3 years ago
Read 2 more answers
SHOW WORK
mote1985 [20]
1). The answer is 86. .29n =24.94
In order to obtain this you need to divide both sides by .29

2) The answer is 25%
35/140 x 100% =25%

3) The answer is $70
So if 100% of 40 is 40 and 75% of 40 is 30 than you need to add 40 + 30 which equals 70.

Hope this helps :)
4 0
3 years ago
How to find irrational numbers between two numbers
Vaselesa [24]

Answer:

If A and B are two rational numbers such that A<B

Then X = A + (B-A)/π would be an example of an irrational number

such that A < X < B

Hope this helps

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8 0
3 years ago
If g(x) = 3x^2+2x-1. Find g(-1).​
Mandarinka [93]

Step-by-step explanation:

g(x) = 3x² + 2x - 1

g(-1) = 3(-1)² + 2(-1) - 1

= 3(1) -2 -1

= 3 - 3

= 0

5 0
3 years ago
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