PLS HELP!!! there are 72 students in a speech contest. yesterday, 1/3 of them gave their speeches. today, 5/6 of the remaining students gave their speeches. How many students still haven't given their speeches?

Find the probability that -0.3203 < = z < = -0.0287 find the probability that -0.5156 < = z < = 1.4215 find the probability that 0.1269 < = z < = 0.6772

Renee hiked for 6 3 /4 miles. after resting, renee hiked back along the same route for 5 1 /4 miles. how many more miles does renee need to hike to return to the place where she started? represent your answer as a simplified mixed number, if necessary.

How do you find percent change? ? i will give brainliest for the bestme i don’t understand