Step-by-step explanation:
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This problem is odd in that no information is given regarding the relationship, if any, between x and y, and (more importantly) x can't have both values -15 and 21. Please go back and ensure that you have copied down this problem precisely as it was given you.
A suit and 4 ties = 292
a suit = 200
4 ties = 292 - 200
4 ties = 92
4T = 92
4T/4 = 92/4
T = 23
Each tie costs 23 dollars
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The circumference of this circle is <span>92.167600247087 in.</span>
The gravitational force acting between two objects is calculated by,
F = G x (m1 x m2) / d²
where G is the universal gravitational constant, m1 and m2 are the masses of the objects, and d is the distance between them. The distance between the spheres is twice the measure of the radius.
Substituting,
F = (6.674 x 10^-11) x (900 kg x 900 kg) / (0.40 m)²
Thus, the gravitational force between the spheres is approximately 3.378x10^-4 N.