A projectile is thrown upward so that its distance above the ground after t seconds is h = -16t2 + 608t.
After How many seconds does it reach its maximum height?

by definition, an arc subtended by a central angle of some given measure has the same measure. so .

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,