Solve the problem using the quadratic formula.When water runs out of a hole in a cylindrical container, the height of the water in the container can often be modeled by a quadratic function. Assume that the height of the water in a particular metal can with a small hole can be modeled by h(x) = 0.0003x2 - 0.17x + 8, where x is the time (sec) and h is the height (cm). Use the quadratic formula to estimate the earliest time when the height is 6 cm. Round your answer to the nearest second.
A. 19 sec
B. 16 sec
C. 18 sec
D. 12 sec
Answer: D
Mathematics
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For the given data value, find the standard score and the percentile.A data value 2.3 standard deviations below the mean.
A. z = -2.3; percentile = 1.07 B. z = -2.3; percentile = 98.93 C. z = -0.23; percentile = 40.13 D. z = 2.3; percentile = 98.93
Mathematics
Write the quotient in the standard form.
A. 
- 
i
B. 
+ 
i
C. 
+ 
i
D. 
- 
i
Mathematics
Sketch the graph of the function and its inverse on the same coordinate axes.f(x) = 2x + 5 
A. 
B. 
C. 
D. 
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A substance has a hydrogen ion concentration of  figure 1.png)
. Find the pH of the substance.
 figure 2.png)
Mathematics