Consider the expressions shown below. A
B
C
-9x2 - 2x + 7 9x2 - 2x +
29x2 + 2x - 7
Complete the following statements with the letter that represents the expression.
(7x2 – 5x + 3) + (2x2 + 3x
1) is equivalent to expression
(3.12 – 48 – 4) + (-12x2 + 2x + 11) is equivalent to expression
(4.12 – 3x – 9) + (502 + 5x + 2) is equivalent to expression
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Michele wanted to measure the height of her school’s flagpole. she placed a mirror on the ground 48 feet from a flagpole, then walked backwards until she was able to see the top of the pole in the mirror. her eyes were 5 feet above the ground and she was 12 feet from the mirror. using similar triangles, find the height of the flagpole to the nearest hundredth of a foot.