Since both equations equal y you can do

. then do:

and then you get:
Answer:
B or C
Explanation:
The Mali Empire arose with the consolidation of several small Malinké Kingdoms in Ghana around the areas of the upper Niger River [v]. Most of what is known about the Empire of Mali's early history was collected by Arabic scholars in the 1300s and 1400s
Answer and Explanation:
Patch size appears to be the main factor that compels populations in distributed habitats. Patch size is positively related to food availability and negatively related to organic evolutionary pressures, physiological stress, and parasite charge. Habitat fragmentation and disturbance on howlers depend upon identifying different threats that may affect howlers in fragmented landscapes; specification predictions developed in fragmentation and the empirical evidence also consider during predictions. Food patch size is measured by feeding spaces, S, a patch restricted for a given animal species. Structural, spatial criteria should determine the values of S. The size of the feeding aggregate is finite by the accessibility of space or by constraining behavior. S is limited by the density of food items within the patch, and may change, depending on the relative profitability of alternative patches which is available to the animal, a result deduced from simple optimal foraging theory.
Answer: the contestants and observers thought the questioners were more knowledgeable than the contestants.
Explanation: Ross et al published a paper in the journal of personality and social psychology in 1977 titled
"Social Roles, Social Control, and Biases in Social-Perception Processes". They demonstrated that our actions and perceptions are determined by roles we have to play in interpersonal encounters; this is the biasing effect social roles have on performance.
In this instance the observers and the contestants perceived the questioners as having superior knowledge as the questioners were given latitude in how they frame the questions. Due to their social roles, the questioners were "the powerful" while the contestants and observers were "the powerless" playing out their roles and not taking into account the biasing effect.
If the roles were switched around, the outcome would still be the same with each group irrespective of their actual ability and knowledge.