Distance from lightning varies directly with the time it takes to hear thunder. when thunder is heard 10 seconds after seeing lightning, the distance is 2 miles. what is the constant of proportionality in the situation?

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Which of the following is the true for f(x) = 5cos