first is 86
we know because of the sum of the interior angles of a triangle being 180, and that 5 + 6 =180
<span>The value of y when x=3 when the value of y varies directly with x^2, and y = 150 when x = 5 is 54. Since the value of y varies directly with x2, then: y = k * x^2, where k is constant. When y = 150 and x = 5, the value of constant is: 150 = k * 5^2. 150 = k * 25. k = 150/25. k = 6. Thus, when x = 3, the value of y will be: y = 6 * 3^2. y = 6 * 9. y = 54.</span>
6.283 is your answer!
FORMULA: 2(pie)(radius)
64 inch = 162.56 centimetres
2x-2>-12
2x>-10
x>-5
hope this helps!
