Answer:
The circumference of Mario's circle is 75 cm
Step-by-step explanation:
<u><em>The correct question is</em></u>
Joe drew a circle whose circumference is 25 cm. Mario drew a circle whose diameter is 3 times the diameter or Joe’s circle. What is the circumference of Mario’s circle?
we know that
All circles are similar
The ratio of the circumferences of two circles, is equal to the scale factor
Let
z ----> the scale factor
x ----> circumference of Mario's circle
y-----> circumference of Joe's circle
so
we have
substitute the given values
solve for x
therefore
The circumference of Mario's circle is 75 cm
Answer:
You should also try solving it yourself to make sure I did not make any mistake.
Step-by-step explanation:
We already know the slope so, so far the equation should look like this.
Now we just need to insert the point into the equation. So point (7,9) 7 should replace the x and 9 will replace the y. It will look like this:
when you solve this equation you'll get b
So the equation is