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ipn [44]
2 years ago
7

Question 3 And question 4 pleaseeee help!!

Mathematics
1 answer:
Verizon [17]2 years ago
4 0

Answer:

see pdf

Step-by-step explanation:

Download pdf
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A rock is thrown upward from a bridge that is 57 feet above a road. The rock reaches its maximum height above the road 0.76 seco
bekas [8.4K]

answer:

f(t) = -9.9788169(t -0.76)^2 +57

Step-by-step explanation:

On this question we see that we are given two points on a certain graph that has a maximum point at 57 feet and in 0.76 seconds after it is thrown, we know can say this point is a turning point of a graph of the rock that is thrown as we are told that the function f determines the rocks height above the road (in feet) in terms of the  number of seconds t since the rock was thrown therefore this turning point coordinate can be written as (0.76, 57) as we are told the height represents y and x is represented by time in seconds. We are further given another point on the graph where the height is now 0 feet on the road then at this point its after 3.15 seconds in which the rock is thrown in therefore this coordinate is (3.15,0).

now we know if a rock is thrown it moves in a shape of a parabola which we see this equation is quadratic. Now we will use the turning point equation for a quadratic equation to get a equation for the height which the format is f(x)= a(x-p)^2 +q  , where (p,q) is the turning point. now we substitute the turning point

f(t) = a(t-0.76)^2 + 57, now we will substitute the other point on the graph or on the function that we found which is (3.15, 0) then solve for a.

0 = a(3.15 - 0.76)^2 + 57

-57 =a(2.39)^2  

-57 = a(5.7121)

-57/5.7121 =a

-9.9788169 = a      then we substitute a to get the quadratic equation therefore f is

f(t) = -9.9788169(t-0.76)^2 +57

4 0
2 years ago
Help me please,Thanks
mylen [45]
D 66 cats

Hope this helps!
7 0
3 years ago
6x - 9 = 15 linear equations
finlep [7]

Answer:

x = 4

Step-by-step explanation:

6x - 9 = 15

6x - 9 + 9 = 15 + 9

6x = 24

6x / 6 = 24 / 6

x = 4

4 0
3 years ago
Read 2 more answers
Please answer this !!!
denis-greek [22]

Answer:

to do this we have to divide 43 by 83

0.51807228915

so the frequency is about 51.8%

8 0
3 years ago
Find the area of the figure.
SpyIntel [72]

Answer:

the length is 3

Step-by-step explanation:

length times 6 equals 2

6 divided by 2 equals 3

5 0
3 years ago
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