When the center of earth is 3.8 × 105 kilometers from the center of the moon, the force of gravity between earth and the moon is about 20.46 × 1025 newtons. use these values, along with the mass of earth and the gravitational constant you found in part c, to estimate the mass of the moon.

Solve the equation for b: a= (1/2)(b)(h)

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?

14+2 (56-1) this is an arithmetic sequence