Lily swims a 100-meter race. She swims the first half in 27.8 seconds. She swims the second half in 30.12 seconds. About how long does it take Lily to swim the whole race? Choose the best estimate. 70 seconds 158 seconds
42 seconds 58 seconds

Asilkworm winds its cocoon out of one long silk fiber. to make silk thread, 3 to 10 of these silk fibers are unwound from their cocoons and combined into aa single thread with a typical length of 300 yards. choose a reasonable number of silk fibers in a thread write an equation to find the total length of the silk fibersused in 300 yards of the thread

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?

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.