Triangle abc can be taken to triangle A1 B1 C1 using rigid motions and a dilation select the equations that are true (choose 3) A1 B1=B1 C1
—— ——
AB BC

B1 C1=A1 C1
—— ——
BC AC

A1 C1=B1 C1
—— ——
BC AB

A1B1 = A1 C1
—— ——
AB AC

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

I'm confused on this could anyone me and show me what i need to do to solve it.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16