Which statements about square roots are true? Check all that apply.
A.) The square root of a positive number cannot be negative.
B.) All positive numbers have two square roots.
C.) √8 = 9 because 9(2) = 18
D.) √49 = 7 because (7) =49
E.) √25 = 5 because 5^2= 25

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling