77. The mass of a radioactive sample is given by M(t)=M(0) 10-4, where t is the time in years, M, is the initial mass, and k is a constant. If 400 grams of
this material decays to 40 grams in 10 years, what is the value of k?

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

The multiplicative property of equality states that for real numbers a, b, c, and d, if a = b and c = d, then ac = bd. true false

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv