Circumference + perimeter =38
x = circumference of circle
find r in terms of x
2

r=x
r=

Area=

r^2
so..
A=

(

)^2
=

(

)
=

(38-x) is perimeter
then

(

)^2

+ (

)^2
then you graph it and it equals
16.716 cm the circumference of the circle
Answer:
Yes
Step-by-step explanation:
Because a meter is made up of 100 Cm.
That would be :
4x – 10 = x2 – 5x + 10 ( y = 4x - 10 is substitute for y)
PROOF: y + 5x = x²<span> + 10
</span> (4x - 10) + 5x = x² + 10
4x - 10 = x² -5x + 10
<span>
</span>0 = x2 – 9x + 20<span> (liked terms are grouped and simplified)
PROOF: </span> 4x - 10 = x² -5x + 10
4x = x² -5x + 10 + 10
0 = x² -5x -4x + 20
0 = x² - 9x + 20
Solving:
x² - 9x + 20 = 0
x² - 5x - 4x + 20 = 0
(x - 5) (x - 4) = 0
⇒ x = 4 (as question says) OR x = 5
Equivalent expressions are expressions that have the same value
The equivalent expression of
is 
The expression is given as:

Expand the equation

Distribute the equation, as follows:

In complex numbers,

So, we have:

Evaluate the product

Combine like terms

Evaluate like terms

Hence, the equivalent expression of
is 
Read more about equivalent expressions at:
brainly.com/question/2972832
Answer:
I believe it would be 5/7x=12
Step-by-step explanation:
First I took the 4 and 1 and added that give me 5 after, I did 4x plus 3 and that’s 7 so I added on the x and last I put equal 12 because if I add that all up that is 12