Enrico wants to calculate the height of a building he makes the following maesurements. the angle of elevation from the ground to the top of the building is 64. the lengeth of the buildings shadow is 136 feetwhats the height of the building

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

A3cm×3cm\greend{3\,\text{cm} \times 3\,\text{cm}} 3cm×3cm start color greend, 3, space, c, m, times, 3, space, c, m, end color greend rectangle sits inside a circle with radius of 4cm\blued{4\,\text{cm}} 4cm start color blued, 4, space, c, m, end color blued . what is the area of the shaded region? round your final answer to the nearest hundredth.

If the segment op is dilated by a scale factor r=2, what is the length of segment op? a)10cm b)16cm c)6cm d)4cm