Joshua used two wood beams, pc and qa, to support the roof of a model house. the beams intersect each other to form two similar triangles qrp and arc as shown in the figure below. the length of segment pr is 3.7 inches and the length of segment cr is 5.6 inches. the distance between a and c is 4.9 inches. what is the distance between the endpoints of the beams p and q?

a) 3.2 inches.
b) 3.7 inches.
c) 4.2 inches.
d) 4.4 inches.

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