Answer:
x=-45
Step-by-step explanation:
You do inverse operation. Since x/9=-5, you would have to multiply -5 by 9 to get -45 because multiplication is the inverse of division.
0.0000805
8.05×10⁻⁵ = 8.05×0.00001 = 0.0000805
102 of runner's races were 10-kilometer races.
the answer is 400-8=394.
