To find the energy of Earthquakes (measured in Joules) scientists use the equation: E = (2.5 x 104) x 101.5M where M is the magnitude of the earthquake. The 1989 San Francisco earthquake, which killed 90 people, had a magnitude of 7.1. Compare the energy of that earthquake with the 2003 earthquake that destroyed the ancient city of Bam, Iran, which had magnitude 6.3 and killed an estimated 50,000 people.

answer: the common difference is -0.10

1010: 3030

is it i think

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it