9514 1404 393
Answer:
5 seconds
Step-by-step explanation:
You want the positive value of x when y = 0.
0 = -18x² +90x
0 = -18(x)(x -5) . . . . . factor
x = 0 or 5 . . . . . values that make the factors zero
The ball will return to the ground after 5 seconds.
Answer:
£52
Step-by-step explanation:
let Carly shared is equal to 5x and it is equal to £70
then x is equal to 14
so James shared = 3x i.e. £52
Answer:
r= -15
Step-by-step explanation:
when a negative subtracts a negative you just add more negatives
2r
r= -15
2x-15= -30, -30- -6= -36