(FLVS Geometry) PLEASE ANSWER QUICKLY- Which step is the same in the construction of parallel lines and the construction of a perpendicular line through a point on the line?

Create only one arc that intersects the original line.
Create two arcs that intersect the original line.
Place the compass on a point off the original line. -NOT
Place the compass on a point on the original line. -NOT

Please do not guess.

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?

If a runner who runs at a constant speed of p miles per hour runs a mile in exactly p minutes what is the integer closest to the value p