PLEASE HELP I NEED THESE EXERCISES OR I WILL FAIL MATH! PLEASE :((( G is the center of gravity of a triangle
ABC and A ′ is the midpoint of BC and L is the center of gravity of (A, −1), (B, 2), and (C, 2).
1. Show that 4LA ′ = LA. Solve for L
2. Prove that L and G are symmetric relative to A'.

The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

Two airplanes start at the same place and travel in opposite directions, one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?