The answer is E because 3 x 0 - 4 x -2 = 8
3.25 (plz give me brainliest cuz I answered first)
Step-by-step explanation:
The largest possible ellipse will have a semi-minor axis of 2 feet and a semi-major axis of 4 feet. If we center the board on the origin of the cartesian coordinate plane, we can derive the location of the foci and thus, the length of string he will need:
x^2 / 16 + y^2 / 4 = 1
Vertices:
(-4 , 0) , (4 , 0)
(0 , -2) , (0 , 2)
Step 1: Rewrite equation
10-5y=3x
Step 2: To get y alone on the left side, subtract 10 on both sides
10-5y=3x
-10 -10
__________
-5y=3x-10
Step 3: divide -5 on both sides, again to get y alone
-5y=3x-10
/-5 /-5 /-5
________
y=-3/5x+2
Final equation: y=-3/5x+2
Hope this helps :)
0.25r - 0.125 + 0.5r = 0.5 + r
0.75r - 0.125 = 0.5 + r |add 0.125 to both sides
0.75r = 0.625 + r |subtract r from both sides
-0.25r = 0.625 |divide both sides by (-0.25)
r = - 2.5
