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Airida [17]
2 years ago
11

Please HELP me I beg you!!!!!NO LINKS!!!!!!!!and THANK YOU.

Mathematics
1 answer:
Vitek1552 [10]2 years ago
8 0

Answer:

B,C,D and F

Step-by-step explanation:

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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) afte
Vlad1618 [11]

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 = \dfrac{-(-31)\pm \sqrt{(-31)^2-4(16)(14)}}{2(16)}\\\\

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.

Learn more about Quadratic Equations:

brainly.com/question/2263981

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4 0
2 years ago
The graph below shows graph of f (x), its derivative f '(x), and its second derivative f "(x). Which of the following is the cor
Jet001 [13]

Answer:

A is f ", B is f, C is f '.

Step-by-step explanation:

Your answer is correct.  B is the original function f.  It has a local maximum at x=0, and local minimums at approximately x=-3/2 and x=3/2.

C is the first derivative.  It crosses the x-axis at each place where B is a min or max.  C itself has a local maximum at approximately x=-3/4 and a local minimum at approximately x=3/4.

Finally, A is the second derivative.  It crosses the x-axis at each place where C is a min or max.

8 0
3 years ago
Identify the variable in: 7h + 3
7nadin3 [17]
Isn’t it h?

extra words so i can actually post this reply
3 0
2 years ago
Read 2 more answers
Set of the equation <br> X+9=26
trapecia [35]

Answer:

17

Step-by-step explanation:

subtract 9 from 26 and you should get the answer

8 0
3 years ago
The cow had 2 grass and the dog ate 3 times as much as the cow. how much did the cow eat​
seropon [69]

Answer:

6

Step-by-step explanation:

2 x 3 = 6

8 0
3 years ago
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