Use the quadratic formula above to solve for h(t) = -4.9t^2 + 8t + 1 where h is the height of the ball in meters and t is time in seconds. Round to the nearest hundredth second!

1.75 seconds

Step-by-step explanation:

Lets apply the quadratic formula-

- 8 +_ (sqrt of 64 + 19.6)

-9.8

-8 +_  9.1433

-9.8

x = 1.74931972 ( since x can only be positive in real life situations like when throwing a ball)

x = 1.75 rounded in seconds

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18