Wires go between Boston, Chicago, and Seattle. Those cities are at voltages
xB, xC, xS.
With unit resistances between cities, the three currents are in y:
y=Ax is ⎡⎣⎢yBCyCSyBS⎤⎦⎥=⎡⎣⎢101−1100−1−1⎤⎦⎥⎡ ⎣⎢xBxCxS⎤⎦⎥.
(a) Find the total currents
ATy
out of the three cities. (b) Verify that
(Ax)Ty
agrees with
xT(ATy)
six terms in both.

Find the value of the cosine for angle a

The equation of a circle is (x - 3)2 + (y - 7)2 = 25. determine the length of the radius. 4 25 12.5 5 write the standard equation of the circle with center (2, 3) and a diameter of 12. (x - 2)2 + (y - 3)2 = 36 (x + 2)2 + (y + 3)2 = 12 (x - 2)2 + (y - 3)2 = 6 (x - 3)2 + (y - 2)2 = 36 the equation of a circle is (x + 3)2 + (y + 7)2 = 25. where is (3, 4) located in relation to the circle? on the circle in the interior of the circle in the exterior of the circle at the center of the circle

Which ordered pair is a solution of the equation? y + 5 = 2(2+1) choose 1 answer ® only (5,10 ® only (-1,-5) © both (5, 10) and (-1,-5) 0 neither