Answer:
Step-by-step explanation:
hello :
h(t) = -t²+8t
the highest point is the vertex of this prabola (-b/2a ; h(t) )
a= -1 and b= 8 -b/2a = - (8)/2(-1) = 4
h(4) = -(4)²+8(4) = -16+32 = 16
first answer : 16
second answer : 4
Well part a would be 16/40
part b would be 50/50 or 20/40 or 1/2 prety much anything that represents 1/2
Answer:
value of 'u'= -54
Step-by-step explanation:

To eliminate any number , we always do opposite operation
To remove denominator 9, we multiply both sides by 9

270 = -5u
To remove -5 we divide by -5 on both sides

-54= u
So value of u= -54