Answer:
x^(2)-11x+24=0
Step-by-step explanation:
we know that
if the line segment KL is tangent to circle J at point K
then
KL is perpendicular to KJ
the triangle KJL is a right triangle
Applying the Pythagorean Theorem
we have
substitute the values
therefore
<u>the answer is the option B</u>
Hello!
your answer is: 2 minutes, 49 seconds, and 800 milliseconds
to get this, divide 204 by 72. that gives you the amount of minutes the heart was beating, which is 2.83 minutes
then, multiply 2.83 by 60 to get the seconds
you have 169.8 seconds.
2 minutes is equal to 120 seconds, so subtract that from 169.8
that leaves 49.8 seconds
.8 seconds is equal to 800 milliseconds
so put it all together and you have: 2 minutes, 49 seconds, and 800 milliseconds
I hope this helps, and have a nice day!
The area of a circle is A = πr^2. We let A1 And A2 the areas of the circles and r1 and r2 the radius of each, respectivley.
A1 + A2 = 80π
Substitute the formula for the area,
π(r1)^2 + π (r2)^2 = 80π
From the statement, we know that r2=2(r1).
<span>π(r1)^2 + π (2 x r1)^2 = 80π
</span>We can cancel π, we will have
5 x (r1)^2 = 80
Thus,
r1 = 4 and r2 = 8
