What let the citizens know the battle of bull run started? Was it like the battle of Fort Sumter where they heard the gunshots?

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Select the lengths in centimeters that would form a right triangle

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.