Madrid is in the exact center of which country

Determine which of the two measurements in each set is lesser.10°f or 20°ca. 10-fb. 20°c

How would you find the measure of one interior angle

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks