Please help. quickly if possible

The sum of 5consecutive even numbers is 100. what is the first number in this sequence?

50 points and will mark brainlest if you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking:

The ratio of the height of two similar cylinders is 4 to 3 what is the ratio of their volumes