Original volume = 2.5 million liters.
After evaporation, the remaining volume is 2 million liters, therefore
Evaporated volume = 2.5 - 2 = 0.5 million liters.
Percent of water evaporated = 100*(0.5/2.5) = 20%
Answer: 20%
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➷ Area = length x width
Substitute in the values that you have:
114 = 9.5 x w
Divide both sides by 9.5 to get the width:
w = 12
The width is 12 ft
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Answer:
15 cm
Explanation:
The cylinder’s volume can be found by multiplying base by height. The formula for this would be base*height=volume. The base and volume are given, so plug the values in and solve for height.
base*height=volume
100*height=1500
height=15 cm
Answer:
zero
Step-by-step explanation:
The answer to that question is best found by looking at the value of the <em>discriminant</em>.
For quadratic ax^2 +bx +c = 0, the value of the discriminant is ...
d = b^2 -4ac
Here, you have a=3, b=8, c=7, so the discriminant is ...
d = 8^2 -4(3)(7) = 64 -84 = -20
When the discriminant is negative, both solutions are complex (not real).
There are zero real solutions to this equation.
Answer:
1.118 seconds
Step-by-step explanation:
h =50
h = –16t^2 + 70
substitute h=50
50 = –16t^ 2 + 70
subtract 70 from each side
50 - 70 = -16t^2
-20 = -16 t^2
divide each side by -16
-20/-16 = t^2
1.25 = t^2
take the square root of each side
sqrt(1.25) = sqrt(t)
we only take the positive because time can only be positive
1.118 =t