Scientist look at various evidence like fossils, rocks, and glaciers to determine what it is like millions of years ago. Evidence like rocks, movement of the tectonic plates and glaciers can determine the landforms and climate of an area. Evidence like fossils, combined with the current knowledge of evolution and the climate at that time allows scientists to hypothesize what it looks like millions of years ago.
Step-by-step explanation:
(a^-7)/a^10 = a^(-7-10) => B
Answer:
x = 2
Step-by-step explanation:
Direct variation is in the form
y = kx
Using the first coordinates (4,6) we can determine k
6 = k*4
Divide each side by 4
6/4 =k
3/2 = k
y = 3/2 x
We want to determine x
3 = 3/2 x
Multiply each side by 2/3
3 * 2/3 = 3/2 * 2/3 x
2 =x
I would change the 1 2/5 miles to a whole fraction which would be 7/5 miles then invert the 5/8 th to 8/5 then multiply the fractions. I.E. 7/5 x 8/5 which will give 56/25. Divide 25 into 56 and you get 2 6/25 miles or convert to a decimal and would be 2.24 miles.