Jennifer looks around at an assembly. She notices her younger sister to her right and her older brother 9 meters ahead of her. If Jennifer's brother and sister are 15 meters apart, how
far apart are Jennifer and her younger sister?

Step-by-step explanation:

e haʻi paha wau iā

Earthquake measuring 4.5 is 10 times more powerful than earthquake measuring 3.5 on Richter scale.

Step-by-step explanation:

Earthquake refers to the violent shaking of the Earth crust in response to its extremely dynamic interior. Sometimes the rocks are loaded or stressed beyond its elastic limit, following which it rebounds thus emitting a wave(seismic), which is received by us as seismic waves.

The energy released during an earthquake is measured in Richter scales (named after Charles Richter). While 1 is the lower limit, there is no such upper limit. However, earthquakes above 7 are considered fragile for human existence. It is a logarithmic scale meaning successive numbers of the scale by a factor of 10.  

Thus, an earthquake measuring 4.5 would be around 10 times more powerful than an earthquake measuring 3.5 following logarithmic scale.