All chords are diameters: the answer is false
Answer:
132 degrees
Step-by-step explanation:
x+ 3+7x-15=180
8x -12 =180
8x = 168
x=21
7(21) -15
147-15
132
Answer:
They each have 64
Step-by-step explanation:
let C = number of fish that Cecilia has --- then, O = 2C, where O = number of fish that Oscar has --- and T = O + 8 = 2C + 8, where T = number of fish that Tasha has --- then, C + O + T = C + 2C + (2C + 8) = 148 --- or, 5C + 8 = 148 --- or, 5C = 140 --- or, C = 140/5 = 28 --- and, O = 2C = 2(28) = 56 --- and, T = O + 8 = 56 + 8 = 64
<em>DC</em>₃₁ is the entry of the product <em>DC</em> in row 3, column 1, which you get by computing the dot product of the 3rd row of <em>D</em> and the 1st column of <em>C</em> :
{3, -2} • {1, 4} = 3×1 + (-2)×4 = 3 - 8 = -5
