Please help me i dont know how to do this

Mathematics

1 answer:

Vaselesa [24]4 years ago

5 0

Answer:

I can't give you an exact answer because the graph is too blurry.

Step-by-step explanation:

however I can tell you how to answer it,

so all you need to do is take each point on the graph and add 2 to the y coordinate and add 5 to the x. you so this because it says up and to the right. hope this helps

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Step-by-step explanation:

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3 years ago

What is the circumference of a circle with an area of 25??

Semmy [17]

Answer: The circumference is: " 8.87 square units " .
_________________________________________________
Explanation:
_____________________________________
Note the following:
________________________________
Area of a circle: A = π r² = 25 units² ;

Circumference of a circle: C = π*d = 2πr
____________________________________
If we can solve for "r" ("radius", we can solve for the "Circumference, "C") ;
__________________________________
A = π r² = 25 ;

C = 2 * π *r

So: " π * r * r = 25"  ;
________________________
We know that: " π * r * r = 25" ;

Multiply EACH side of the equation by "2" ;
__________________________________
2*{ π * r * r = 25} ;
__________________________________
To get: 2 * π * r * r = 25 ;

Note: "C = 2* π * r ;

So, "(2 * π * r) * r = 25 " ;

We want to solve for "C" ; so replace the "(2 * π * r) " ; with "C" ;

C * r = 25 ;
______________________________
Divide EACH SIDE of the equation by "r" ; to isolate "C" on one side of the equation:
________________________________
(C * r) / r = 25 / r ;

to get: C = 25 / r ;
____________________________________
Now, we need to find the value for "r" (the radius);
to find "C" (the circumference).

We know that:
____________________________________
π * r² = 25 ;
____________________________________
Divide each side of the equation by "π"; to isolate "r² " on one side of the equation;
____________________________________
(π * r²) / π = 25 / π ;

To get:
___________________________________________________
r² = 25/π ; Let us use "3.14" as an approximation for "π" ;
___________________________________________________
r² = 25 / (3.14) ;

r² = 7.9617834394904459 ;

Take the "positive" square root of EACH side of the equation;
(since the radius, "r", cannot be a negative value);
_____________________________________________

+√(r²) = +√(7.9617834394904459) ;
_____________________________________________
to get:
_____________________________________________
r = 2.8216632399155016635 ;
→ Round to: " 2.82 " ;
_____________________________________________
C = 25 / r ;

C = 25 / (2.82) = 8.8652482269503546 square units .
  → Round to: "8.87" square units.
_____________________________________________
The answer is: "8.87 square units" .
_____________________________________________

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