Solve for x.
7(x - 3) + 3(4 - x) = -10
simplify.
[7m + 3n - 9 + 2m] + [n + 3 + m + 3n - 6]
a spaceship traveled 81 billion miles. in scientific notation that is miles.

step-by-step explanation:

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

40 minutes

step-by-step explanation:

add the time and multiply by 2