8 divided by -2+(-4) times 8
2 answers:
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Answer:
1.079 seconds
Step-by-step explanation:
You want to find t when H(t) = 15.
15 = -16t^2 +8t +25
10/16 = t^2 -1/2t . . . . . . subtract 24, divide by -16
10/16 + 1/16 = t^2 -1/2t +(1/4)^2 . . . . . add (1/4)^2 to complete the square
11/16 = (t -1/4)^2
t -1/4 = √(11/16) . . . . . take the positive square root
t = 1/4 +(√11)/4 = (1+√11)/4 . . . . use a common denominator
You would be 15 ft above the water at t = (1+√11)/4 ≈ 1.079 seconds.
1. As you can see in the figure attached in the problem, you have the following system:
y≥5x-4 (i)
y≤5x/6 (ii)
2. When you solve the system, the values of the variables "x" and "y", are:
x=24/25
y=4/5
3. When you graph the system, you obtain the graph shown in the image attached.
y≥5x-4 (i)
y≤5x/6 (ii)
2. When you solve the system, the values of the variables "x" and "y", are:
x=24/25
y=4/5
3. When you graph the system, you obtain the graph shown in the image attached.