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Sphinxa [80]
3 years ago
10

A soccer player heads a ball from a height of 6 feet with an initial vertical velocity of 20 feet per second. The height h in fe

et of the ball is given by h=-16^2+20t+6 where t is the time elapsed in seconds. How long will it take the ball to hit the ground if no other players touch it?
Mathematics
1 answer:
nlexa [21]3 years ago
3 0
WE see that at time t=0 the ball's height is 6 feet so we know the origin of our coordinates is the ground (h=0 feet)  So we need to solve this quadratic equation for the value of t that makes the equation 0.   There will be 2 solutions, one will be right and the other is usually impossible (all quadratics have two roots)
Using the quadratic formula (google it if you're unfamiliar, Brainly's math editor doesn't show things like that too nicely) I get t = 1.5s.  (the other root is -0.25)

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Jerry has a part-time job at a supermarket. The ordered pairs show the number of hours he worked for (input values) and the numb
Karo-lina-s [1.5K]

Answer:

Yes

Step-by-step explanation:

The ordered pairs are (6,72) (8,96) (5.5, 66) (9,108) (7,84).

The number of hours worked is x and the money earned is  y.

Let us divide the values of y by x

\dfrac{72}{6}=12

\dfrac{96}{8}=12

\dfrac{66}{5.5}=12

\dfrac{108}{9}=12

\dfrac{84}{7}=12

The fuction which defines the above ordered pairs is y=12x

It can be seen that the amount of money earned is 12 times the number of hours worked.

So, per hour Jerry earns 12 dollars.

Hence, the ordered pairs are relation.

8 0
3 years ago
You have 12 1/3 yards and you need 47 yards how many more yards of fabric do you need
Lady bird [3.3K]

Answer:

34 2/3

Step-by-step explanation:

You need 47 yards. You have 12 1/3

47 - 12 1/3. So we'll break it down.

47 - 12 = 35.

Now, 35 + 12 1/3 would make 47 1/3

So now 35 - 1/3=34 2/3

34 2/3 + 12 1/3 = 47

4 0
3 years ago
Two fourth-degree polynomials are multiplied together. what is the degree of the product?
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Answer:

The product of a fourth degree polynomial and a third degree polynomial is a 7th degree polynomial (just add the two degrees). Why is this the case? Remember, when you multiply variables with common bases, you add the exponents. Since the degree of a polynomial is just the largest exponent, you're really just adding the degrees when you multiply

6 0
3 years ago
Which statement is true?
pishuonlain [190]
D - their slopes are negative reciprocals of each other.
3 0
3 years ago
Read 2 more answers
Help please urgent !1!1!1!1
allochka39001 [22]
A. 108
B. 72
C. 36
D. 144

M. 63
N. 135
P. 63
R. ?
S. 50
T. ?


I apologize I couldn't see very well where r or t was :(
5 0
3 years ago
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