You have the formula.
KE= 0.5(20 kg) (10 m/s)^2
KE= 10kg * 100 = 1000 J
Well, X= 180 - 2w
and angle made by raidus to tangent is 90' , so angle w = 106-90 = 16
and X= 180- 32 = 148
w= 16 , x= 148
hope it helped
The area of the triangle with vertices
is
.
Inserting numerical values, the are of the triangle with vertices (0, 0), (6, 2), (4, 8) is

45 plus 67 gives you a number
X = mary's shells
g = 1 1/4x + 5
n = 1 1/2x+ 1
g = n
1 1/4x + 5 = 1 1/2x + 1
5/4x + 5 = 3/2x + 1...multiply by common denominator of 4, this will get rid of fractions...however, this is optional...u can work with fractions if u wish.
5x + 20 = 6x + 4
5x - 6x = 4 - 20
-x = - 16
x = 16....so Mary has 16 shells