Answer:
Answer of question 1 :
Explanation:
Let x be the legs of ducks
And y be the legs of cows
According to the question,
2x + 4y = 52...…..(i) ( as ducks ahs two legs and as cows has 4 legs)
As he has 21 animals in total so,
x + y = 21...…..(ii)
We have make the equation. We will solve them by eliminatory method or substitution method. Here, I'll go for substitution method.
From equation (ii)
x = 21 - y....…..(iii)
Putting the value of x in equation (i),
2x + 4y = 52
2( 21 - y ) + 4y = 52
42 - 2y + 4y = 52
2y = 52 - 42
y = 10/2
y = 5 ( He has 2 cows)
putting the value of y in equation (ii)
x + y = 21
x + 5 = 21
x = 21 -5
x = 16 ( He has 16 ducks)
Answer:
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Explanation:
Fossils on continents that are now separated by <u>oceans</u> support the theory of continental drift.
<h3>What is the theory of
continental drift?</h3>
The theory of continental drift was proposed by Alfred Wegener in 1912 and it states that continental landmasses shift position over geologic time on Earth's surface, thereby, appearing to drift together across oceans and into each other.
Thus, the theory of continental drift is supported by Fossils on continents that are now separated by <u>oceans</u>.
Also, we know that continents that are closer to the equator have warmer climates but fossils of <u>tropic plants</u> have been found on islands near the North Pole, thereby, suggesting that islands drifted from the equator.
In conclusion, coal fields in <u>Europe</u> match those that are found in North America, and this supports the theory of continental drift.
Read more on continental drift here: brainly.com/question/7350119
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Daniel's doctor told him that his stroke was caused by a blood clot in an artery in his brain which means the stroke was caused by a medical condition which is referred to as aneurysm.
<h3>What is Aneurysm?</h3>
This is referred to as a weakened artery rupturing and releasing blood content into the brain. This therefore causes a bulge in the walls of the artery and the major causes of this medical condition include the following:
When this happens, the blood forms clot and impairs the function of the central nervous system thereby resulting in the numb sensation or paralysis of certain parts of the body.
The blood formed clots which resulted in the stroke encountered by Daniel in this scenario and therefore makes it the most appropriate choice.
Read more about Aneurysm here brainly.com/question/282530
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