A quadratic equation is in the form of ax²+bx+c. The time at which the height of the ball is 16 feets is 0.717 seconds and 1.221 seconds.
<h3>What is a quadratic equation?</h3>
A quadratic equation is an equation whose leading coefficient is of second degree also the equation has only one unknown while it has 3 unknown numbers. It is written in the form of ax²+bx+c.
The complete question is:
A ball is thrown from an initial height of 2 feet with an initial upward velocity of 31 ft/s. The ball's height h (in feet) after 7 seconds is given by the following, h=2+31t-16t². Find all values of t for which the ball's height is 16 feet. Round your answer(s) to the nearest hundredth.
The time at which the height of the ball is 16 feet can be found by,
h = 2 + 31t - 16t²
16 = 2 + 31t - 16t²
16 - 2 - 31t + 16t² = 0
16t² - 31t + 14 = 0

t = 0.717 , 1.221
Hence, the time at which the height of the ball is 16 feets is 0.717 seconds and 1.221 seconds.
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Inches
Centimeters
Centimeters are more accurate.
Answer: 112
Step-by-step explanation:
Since we were given m and n, we plug them into the expression and solve.
-2(-6)+4(-5)² [exponent]
-2(-6)+4(25) [multiply]
12+100 [add]
112
Now, we know that the value of the expression is 112.
Answer:
Ratio
Step-by-step explanation:
To earn at least $3,200 in revenue, the ticket prices should be $10 or $40.
<h3>What is an
Equation</h3>
An equation is an expression that shows the relationship between two or more variables and numbers.
Revenue = number of tickets sold * price per ticket = (400 - 8p)p
Revenue = 400p - 8p²
For no revenue:
400p - 64p² = 0
p = $0 or p = $50
For revenue of atleast 3200:
400p - 8p² = 3200
p = $10 or p = $40
To earn at least $3,200 in revenue, the ticket prices should be $10 or $40.
Find out more on Equation at: brainly.com/question/1214333