Answer:
See below
Step-by-step explanation:
First, I would choose three different points with some distance between. Let's do x = -5, x = 0, and x = 5. Next, I would plug those numbers into the equation, like so:
Next, I would plot the points [(-5, 45), (0, 25), (5, 5)] on an x-y graph. Finally, I would take a ruler, line it up with the three points, and draw a line through those three points, extending from one side of the graph to the other to show the equation is continuous.
Setting f(x) = 0, we have:
-x2 -7x +30 =0
The roots of this quadratic equation are:
x = 3 and -10
Since the diver is on a diving board, the -10 is somewhere behind him. We use the root x = 3 since this distance is in front of the board.
Therefore, the answer is:
x = 3; the diver hits the water 3 feet away horizontally from the board
The answer is 7.41717 x 10^4 because you move the decimal to the left 4 spaces
Answer:
speed greater than 0.08 mi/min
Step-by-step explanation:
given data
distance = 2 mi
time = 25 min
to find out
the distance you travel and your speed and time related
solution
we know that distance is
distance = speed × time ...............1
so at park at most 25 min
so we need time = 
so here
we know
so
so we can say that he need to run at speed greater than 0.08 mi/min
Answer:
72.22
Step-by-step explanation:
C = 
3.14×23=72.22
