He messed up in the beginning with the 4.
It's supposed to be
(3 - -4)
(3 + 4)
and not
(3-4)
That's where he messed up.
I find it interesting how he uses Xa Ya and Xb Yb. In my school we use X1 Y1 and X2 Y2.
Answer:
c
Step-by-step explanation:
Answer: 11.6 units.
Step-by-step explanation:
1. Plot the points as you can see in the graph attached.
2. As you can see, the lenght <em>TA</em> is 3 units.
3. Apply the formula for calculate the distance between two points, to calculate the length<em> TP</em> and <em>TA.</em> The formula is:
4. Therefore, you have:
5. The perimeter is the sum of the the lenght of each side, therefore:
6. To the nearest tenth unit:
First find equation
center is (h,k) then
(x-h)^2+(y-k)^2=r^2
given
(7,0) is center
(x-7)^2+y^2=r^2
also given (2,0)
(2-7)^2+0^2=r^2
(-5)^2=r^2
25=r^2
(x-7)^2+y^2=25 is equation
take derivitive of both sides, implicit differntiaton
2(x-7)+2y dy/dx=0
2(x-7)=-2y dy/dx
(7-x)/y=dy/dx
at (2,0)
(7-2)/0
undefined
that means the line is x=something
(2,0)
the equation is x=2
The price before the tip was 8 dollars
