By pythagoras
53^2 = h^2 + 45^2 where h is the height of the television.
h^2 = 53^2 - 45^2 = 784
h = sqrt 784 = 28 inches Answer
Answer:
D
Step-by-step explanation:
temp = -3(hours)
-33=-3(hours)
hours=11
4. 3a^3-20a^2+16a-24
12.a^5-5a^2+4a^3-20
<em>Answer:</em>
<em>The unknown angles are 45 and 63</em>
<em>Step-by-step explanation:</em>
<em>5x + 7x + 72 = 180 (angle sum property)</em>
<em>12x + 72 = 180</em>
<em>12x = 180 - 72</em>
<em>12x = 108</em>
<em>x = 108/12</em>
<em>x = 9 </em>
<em />
<em>Therefore, 5x = 5*9 = 45</em>
<em> 7x = 7*9 = 63</em>