Answer:
t = 1/8 ± √(1 − 4d) / 8
Step-by-step explanation:
d = -16t² + 4t
Move everything to the left side:
16t² − 4t + d = 0
Solve with quadratic formula:
t = [ -(-4) ± √((-4)² − 4(16)(d)) ] / 2(16)
t = [ 4 ± √(16 − 64d) ] / 32
t = [ 4 ± 4√(1 − 4d) ] / 32
t = [ 1 ± √(1 − 4d) ] / 8
t = 1/8 ± √(1 − 4d) / 8
Answer:
the last one
Step-by-step explanation:
because yes, thank you and bye
3.60 because you dived 9 \ 2.5
First convert the feet to inches:
3 feet= 36 in.; 4 feet=48 in.
Make an equation for each one:
Type A: h=36+15x
Type B: h=48+10x
Since the questions wants the heights to be equal, h=h so you can substitute so you have:
36+15x=48+10x
5x=12
x=2 2/5 years or 2.4 years
