Hello from MrBillDoesMath!
Answer:
-15
Discussion:
We are asked to evaulate:
abs(3) + ( -2 (3)^2) = => as abs(3) = 3
3 + (-2*9) =
3 - 18 =
-15
Thank you,
MrB
<h2>
The stone fall in air for 7 seconds and fall in water for 5 seconds.</h2>
Step-by-step explanation:
Total distance to sea bed = 127 m
Let the distance traveled in air be s.
Distance traveled in water = 127 - s
Average velocity in air = 16 m/s
Average velocity in water = 3 m/s
Distance traveled in air = Average velocity in air x Time in air
s = 16 x t₁

Distance traveled in water = Average velocity in water x Time in water
127-s = 3 x t₂

We have total time is 12 seconds
That is
t₁ + t₂ = 12

We have
s = 16 x t₁
112 = 16 x t₁
t₁ = 7 s
t₁ + t₂ = 12
7 + t₂ = 12
t₂ = 5 s
The stone fall in air for 7 seconds and fall in water for 5 seconds.
Yes.....................
hope this helps
The answer is in the picture below have a good day :)
3x-3y+0+1-1 Just tack on something onto it that doesn't change the outcome