He needs 26 feet of fence.
The diagonal of the rectangle forms the hypotenuse of a right triangle. The two legs would be the width of the rectangle, 10, and the length, 24:
10²+24² = c²
100+576 = c²
676 = c²
c = √676 = 26
The answer is
A half life pertains to the time it takes for exactly half of a substance to disappear. So, if U235 has a half life of 700 million years, it will take 700 <span>million years for half of it to decay. That would leave .5kg or 500g.</span>
I could be very wrong, but I believe the answer is C
-4(3)=-12
-4(6)=-24
-12+(-24)=-36
