Answer:
(x-9)(x-3)
Explanation:
find out what adds to -12 and also multiplies to get 27
-9 times -3 equals 27 and -9 plus +3 equals -12
<span>High mass stars are the largest, hottest and brightest while the low mass stars are the smallest, coolest and dimmest. High mass stars use their hydrogen fuel rapidly and have short lives while the low mass stars use hydrogen fuel slowly and have long lives. High mass stars pass through the Red Supergiant stage before dying in supernovae explosions while the low mass stars simply die by burning up their fuel to leave behind the white dwarfs which themselves cool and contract further to black dwarfs.
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Answer:On November 8, 1895, physicist Wilhelm Conrad Röntgen (1845-1923) becomes the first person to observe X-rays, a significant scientific advancement that would ultimately benefit a variety of fields, most of all medicine, by making the invisible visible.
Explanation:
Answer: Hydroelectric power will be the best energy source.
Explanation:
<u>Solar energy-</u> It refers to the energy that is directly derived from the sun, and are later used to convert into some kind of electrical or thermal energy. For example, solar panels.
<u>Biomass energy-</u> It is a type of energy that are directly obtained from the plants as well as organisms. This can be regenerated again and again. For example, bio-gas and food crops.
<u>Hydroelectric power-</u> It is a type of energy that is collected, from the rapid motion of water. A dam is needed to construct across a narrow river, which will store water as a reservoir. And this water, when allowed to flow then it initiates the movement of the turbines and due to this continuous motion of the turbines, electricity is generated.
Thus, the most efficient energy source for the given area is the hydroelectric energy, that fulfills the condition for setting up dams in the two rivers, which will generate a huge amount of electricity.
