Find the length of the hypotenuse of a right triangle with legs of 9 cm and 12 cm. a) 8 cm b) 21 cm c) 15 cm d) 225 cm

C. 15 cm

Step-by-step explanation:

The equation for finding the hypotenuse is A squared + B squared = C squared.

Lets use 9 as A and 12 as B.

9 times 9 is 81. 12 times 12 is 144.

81 + 144 = 225.

The square root of 225 is 15.

The answer is C) 15 cm

  about 5.6 days

step-by-step explanation:

we can fill the given information into the decay equation and solve for the value of t at which half the sample remains.

the half-life is about 5.6 days.