3. Here is a scale map of Lafayette Square, a rectangular garden north of the White House. A Lafayette Square
cale
100
200ft
a. The scale is shown in the lower right corner. Find the actual side lengths of Lafayette Square in
feet.
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Danny draws a transversal, t, on two parallel lines ab and cd, as shown below: he makes the following table to prove that the alternate interior angles are equal: which is the missing justification? (6 points) corresponding angles formed by a transversal on parallel lines are supplementary. corresponding angles formed by a transversal on parallel lines are congruent. co-interior angles formed by a transversal on parallel lines are congruent. co-exterior angles formed by a transversal on parallel lines are congruent.

Can someone answer this question? : )

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years