Simplify the following expression: 4 + sqrt4 +1+ sqrt9+7
O A. 11+5i
O B. 5-11i
O c. 11+ 13i
O D. 16+0i

Describe all the numbers that when rounded to the nearest thousand are 645,000

Two fire-lookout stations are 190 miles apart, with station a directly south of station b. both stations spot a fire. the bearing of the fire from station a is upper n 55 degrees upper e and the bearing of the fire from station b is upper s 60 degrees e. how far, to the nearest tenth of a mile, is the fire from each lookout station?

Evaluate the following expression 1/3^2