Answer:
a=21.1
Step-by-step explanation:
You can use the given (incorrect) equation and fill in the value of t to find h:
h = 12.5 +9sin(750(3.5)) = 3.68 . . . . feet
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Or, you can use the correct equation, or just your knowledge of revolutions:
h = 12.5 +9sin(750(2π·3.5)) = 12.5 . . . . feet
in 3.5 minutes at 750 revolutions per minute, the propeller makes 2625 full revolutions, so is back where it started — at 12.5 feet above the ground.
14 and -2. 14+-2=12 and 14*-2 is -28
Answer:
y-6 = (7/6)(x-2)
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Explanation:
The median DT goes from point D, which is given, to point T which we have to find. The point T is the midpoint of segment EF.
Use the midpoint formula to find the midpoint. Add up the x coordinates of E and F to get
-1+5 = 4
Then divide that by 2
4/2 = 2
The x coordinate of point T is x = 2
Repeat for the y coordinates
8+4 = 12
12/2 = 6
The y coordinate of point T is y = 6
So the point T is (x,y) = (2,6)
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We know point D is (-4,-1)
We just found point T to be (2,6)
Using the slope formula, the slope is..
m = (y2-y1)/(x2-x1)
m = (6-(-1))/(2-(-4))
m = (6+1)/(2+4)
m = 7/6
The slope is m = 7/6
Use either the coordinates of D or T. I'll use point T. So (x1,y1) = (2,6) meaning x1 = 2 and y1 = 6
We'll plug m = 7/6, x1 = 2 and y1 = 6 into the point slope equation
y-y1 = m(x-x1)
y-6 = (7/6)(x-2)
which is the final answer
1. Let
be the amount of the limonade in the container.
2.
3. To find each
, the procedure is as in step 2, that is :
4. Thus the right choice is A.