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defon
3 years ago
10

A circle has a radius of 9 cm.

Mathematics
2 answers:
stira [4]3 years ago
8 0

Radius = 9cm

So,

Area of circle = πr²

= π(9)²

= π × 81 cm²

= 81π cm²

Sauron [17]3 years ago
4 0

Answer:

254.469 cm

Step-by-step explanation:

area = πr^2

π × 81 = 254.469005 rounded to 254.469 cm

in other terms, 81π cm^2

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Someone please help me . It’s due today .
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6 0
3 years ago
Use a inequality symbol to compare -3x+7 -10-2
abruzzese [7]
Hey there,

Let's remember that a (inequality symbol) is things like (<), (>), (≤),(≥), (≠).

So, I believe that (-3x+7) and (-10-2) are separate. So we will find that out :)

Let's first do (-3x+7). As simplifying this expression here, we take that "x" of for a while and just stick to (-3+7). 

    -3
+   7
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     4

Let's bring that "x" back, and the answer would be 4x for a while.

So far, 4x is the answer.
_____________________________________________________________

Now, Let's work on the other side.

We are talking about (<span>-10-2)

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So, by solving the answer to (-10-2), we got -12.

So, let's determine what is greater . . . . . 

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-12 is on the negative side, and the number 4 is positive. This would conclude that 4 is great than -12.

Your correct answer would look like . . . 

<span>(-3x+7) > (-10-2)
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I really hope this helps you alot.

~Jurgen

8 0
3 years ago
Read 2 more answers
P(x)=ax-b p(1)=5 and p(2)=4   a+b=?<br><br>HELP ME PLEASE<br><br>​
son4ous [18]

im not really sure about this since i think you can just stop at equation 1

8 0
3 years ago
4 3/2 solve in indices​
mylen [45]

Answer:

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Step-by-step explanation:

So to solve (4)^3/2 ,you have to realise that you need to remove the denominator in the exponent value which in this case is 2

In order to remove the 2,you would need a 2 in the numerator of the exponent .While understanding all this the value 4 can be equated as 2^2.

Thus your means of getting a 2 in the numerator is solved by simply replacing the 4 with 2^2

Thus what you will get is (2^2)^3/2

Now we have a property in exponent where

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Thus (2^2)^3/2 = (2)^3 =8

3 0
3 years ago
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