Answer:
<em>x^2-2x-63 = (x-9)(x+7)</em>
Answer:
3) left
Step-by-step explanation:
Two-hundred forty thousand, five
Answer:
width = 9 cm
Step-by-step explanation:
the area of a 12cm square is 144
16w = 144
x = 9
Answer:
300tan43 - 300tan40
Step-by-step explanation:
Use tangent to find the height of the building:
tan40 = b/300
b = 300tan40
The use tangent to find the height to the top of the antenna:
tan43 = a/300
a = 300tan43
The antenna height = a - b