Answer:
42
Step-by-step explanation:
For the step, let's get an answer about how long it would take for Tina to run around the base in 10 minutes.
For this, you would just need to do: 12 ÷ 2 = 6
So, 6 runs = 10 minutes
Since 70 ÷ 10 = 7 ...
All we will have to do is 7 x 6 which would equal 42.
Therefore, Tina can run 42 circles around the base in 70 minutes.
<em>-kiniwih426</em>
Given equation of the parabola y= -5x^2 -10x -13.
We need to apply formla for x-coordinate of the vertex.
x=-b/2a.
For the given equation we have a=-5 and b=-10.
Plugging values of a and b in formula of x-coordinate of the vertex.
x= -(-10)/2(-5)
x= 10/(-10) = -1.
So, we got x-coordinate of the vertex = -1.
Now, we need to plug x=-1 in given equation to find the y-coordinate of the vertex.
Plugging x=-1 in y= -5x^2 -10x -13, equation we get
y=-5(-1)^2-10(-1)-13.
y= -5(1) +10 -13.
y=-5 +10-13.
y=-18+10.
y=-8.
So, we got y-coordinate of the vertex -8.
Therefore, vertex of the parabola is (-1,-8).
Answer:
I don't see no work so I can find the answer for you
Answer:
207°
Step-by-step explanation:
